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Wu P, Fan J, Tai Y, He X, Zheng D, Yao Y, Sun S, Ying B, Luo Y, Hu W, Sun X, Li Y. Ag@TiO 2 nanoribbon array: a high-performance sensor for electrochemical non-enzymatic glucose detection in beverage sample. Food Chem 2024; 447:139018. [PMID: 38503067 DOI: 10.1016/j.foodchem.2024.139018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/02/2024] [Accepted: 03/10/2024] [Indexed: 03/21/2024]
Abstract
Developing an accurate, cost-effective, reliable, and stable glucose detection sensor for the food industry poses a significant yet challenging endeavor. Herein, we present a silver nanoparticle-decorated titanium dioxide nanoribbon array on titanium plate (Ag@TiO2/TP) as an efficient electrode for non-enzymatic glucose detection in alkaline environments. Electrochemical evaluations of the Ag@TiO2/TP electrode reveal a broad linear response range (0.001 mM - 4 mM), high sensitivity (19,106 and 4264 μA mM-1 cm-2), rapid response time (6 s), and a notably low detection limit (0.18 μM, S/N = 3). Moreover, its efficacy in measuring glucose in beverage samples shows its practical applicability. The impressive performance and structural benefits of the Ag@TiO2/TP electrode highlight its potential in advancing electrochemical sensors for small molecule detection.
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Affiliation(s)
- Peilin Wu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Jiwen Fan
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Yunze Tai
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Xun He
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China
| | - Dongdong Zheng
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Yongchao Yao
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Shengjun Sun
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Binwu Ying
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Yao Luo
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Wenchuang Hu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Xuping Sun
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China; College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China.
| | - Yi Li
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
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Safi A, Landis JE, Adler HG, Khadem H, Eseller KE, Markushin Y, Honarparvaran S, De Giacomo A, Melikechi N. Enhancing biomarker detection sensitivity through tag-laser induced breakdown spectroscopy with NELIBS. Talanta 2024; 271:125723. [PMID: 38295442 DOI: 10.1016/j.talanta.2024.125723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 01/12/2024] [Accepted: 01/24/2024] [Indexed: 02/02/2024]
Abstract
Nanoparticle-enhanced laser-induced breakdown spectroscopy and Tag-LIBS are two approaches that have been shown to significantly enhance LIBS sensitivity and specificity. In an effort to combine both of these approaches, we have initiated a study on the effect of the presence of Silver nanoparticle concentrations on Europium (Eu) and Ytterbium (Yb) LIBS signals. These elements are part of metal-loaded polymers conjugated to antibodies. We observe a signal enhancement of the emission lines of about 10 and 12 times for the Europium and Ytterbium lines. This study shows that Europium and Ytterbium are enhanced differently; Europium shows enhancement for both neutral and ionized species while the Ytterbium shows enhancement only for ionized species. Additionally, we found that NPs at 0.1 mg/mL and 0.05 mg/mL achieved maximum enhancement for Eu and Yb, respectively. Based on our findings, the temperature and electron density of Eu and Yb are not significantly different for NPs concentrations, but the total signal intensity is significantly higher for optimum NP concentrations for both Eu and Yb.
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Affiliation(s)
- Ali Safi
- Department of Physics and Applied Physics, Kennedy College of Sciences, University of Massachusetts Lowell, MA, 01854, USA.
| | - Joshua E Landis
- Department of Physics and Applied Physics, Kennedy College of Sciences, University of Massachusetts Lowell, MA, 01854, USA
| | - Helmar G Adler
- Department of Physics and Applied Physics, Kennedy College of Sciences, University of Massachusetts Lowell, MA, 01854, USA
| | - Hossein Khadem
- Institute for Experimental Endocrinology and Oncology "Gaetano Salvatore" (IEOS), Second Unit, National Research Council, 80131, Napoli, Italy
| | - Kemal Efe Eseller
- Department of Physics and Applied Physics, Kennedy College of Sciences, University of Massachusetts Lowell, MA, 01854, USA
| | - Yuri Markushin
- Optical Science Center for Applied Research, Delaware State University, 1200 N. Dupont Highway Dover, DE, 19901, USA
| | - Sara Honarparvaran
- Student Research Committee, Fasa University of Medical Sciences, Fasa, Iran
| | - Alessandro De Giacomo
- Department of Chemistry, University of Bari, Via Orabona 4, 70126, Bari, Italy; Department of Chemistry, Kennedy College of Sciences, University of Massachusetts Lowell, MA, 01854, USA
| | - Noureddine Melikechi
- Department of Physics and Applied Physics, Kennedy College of Sciences, University of Massachusetts Lowell, MA, 01854, USA
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Hazman Ö, Khamidov G, Yilmaz MA, Bozkurt MF, Kargioğlu M, Tukhtaev D, Erol I. Environmentally friendly silver nanoparticles synthesized from Verbascum nudatum var. extract and evaluation of its versatile biological properties and dye degradation activity. Environ Sci Pollut Res Int 2024:10.1007/s11356-024-33424-5. [PMID: 38683425 DOI: 10.1007/s11356-024-33424-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 04/18/2024] [Indexed: 05/01/2024]
Abstract
In the present study, green synthesis of silver nanoparticles (VNE-AgNPs) via Verbascum nudatum extract was carried out for the first time. The synthesized AgNPs were characterized by different spectral methods such as UV-vis, FTIR, XRD, TEM, and EDAX. According to TEM analyses, the average size range of AgNPs was 17-21 nm, and the dominant peaks in the 111°, 200°, 221°, and 311° planes in the XRD pattern indicated the Ag-NPs FCC crystal structure. FTIR data showed that VNE-AgNPs interacted with many reducing, capping, and stabilizing phytochemicals during green synthesis. VNE-AgNPs had higher antibacterial activity against S. aureus and E. coli bacterial strains with a maximum inhibition zone of 21 and 18 mm, respectively, than penicillin 5 IU, used as a positive control in the study. The cytotoxic effect of VNE-AgNPs appeared at a concentration of 50 µg/mL in L929 cells and 5 µg/mL in cancer (A549) cells. When the impact of VNE-AgNPs and C-AgNPs on inflammation was compared, it was found that VNE-AgNPs increased TNF-α levels (333.45 ± 67.20 ng/mg-protein) statistically (p < 0.05) more than TNF-α levels (256.92 ± 27.88 ng/mg-protein) in cells treated with C-AgNPs. VNE-Ag-NPs were found to have a degradation efficiency of 65% against methylene blue (MB) dye within 3 h.
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Affiliation(s)
- Ömer Hazman
- Department of Chemistry, Faculty of Science and Arts, Afyon Kocatepe University, 03200, Afyonkarahisar, Turkey
- Department of Organic Synthesis and Bioorganic Chemistry, Institute of Biochemistry, Samarkand State University, University Blvd-15, Samarkand, Uzbekistan
| | - Gofur Khamidov
- Department of Organic Synthesis and Bioorganic Chemistry, Institute of Biochemistry, Samarkand State University, University Blvd-15, Samarkand, Uzbekistan
| | - Mustafa Abdullah Yilmaz
- Science and Technology Research and Application Center, Dicle University, 21280, Diyarbakır, Turkey
- Department of Analytical Chemistry, Faculty of Pharmacy, Dicle University, 21280, Diyarbakır, Turkey
| | - Mehmet Fatih Bozkurt
- Faculty of Veterinary Medicine, Afyon Kocatepe University, 03200, Afyonkarahisar, Turkey
| | - Mustafa Kargioğlu
- Faculty of Science and Arts, Molecular Biology and Genetics, Afyon Kocatepe University, 03200, Afyonkarahisar, Turkey
| | - Davlat Tukhtaev
- Department of Organic Synthesis and Bioorganic Chemistry, Institute of Biochemistry, Samarkand State University, University Blvd-15, Samarkand, Uzbekistan
| | - Ibrahim Erol
- Department of Chemistry, Faculty of Science and Arts, Afyon Kocatepe University, 03200, Afyonkarahisar, Turkey.
- Department of Polymer Chemistry and Chemical Technology, Institute of Biochemistry, Samarkand State University, University Blvd-15, Samarkand, Uzbekistan.
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Chen C, Xie M, Yan Y, Li Y, Li Z, Zhang T, Gao Z, Deng L, Wang H. Preparation of berberine hydrochloride- Ag nanoparticle composite antibacterial dressing based on 3D printing technology. J Biomater Appl 2024; 38:808-820. [PMID: 38086527 DOI: 10.1177/08853282231222191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2024]
Abstract
In recent years, Ag nanoparticle (Ag NP)-loaded antibacterial dressings have attracted much attention in high-level medical dressings. However, the high cytotoxicity of Ag NP has always been a problem. In this paper, we examined the improvement of antibacterial activity of berberine hydrochloride (BBR) with Ag NP, the results showed that the combined use of BBR and Ag NP can effectively reduce the dosage of Ag NP while ensuring the inhibition of bacterial growth, thus an intermediate layer dressing containing combined drugs were prepared. At the same time, the top dressing of polyvinyl alcohol (PVA) solid film and the PVA bottom dressings with three kinds of leakage structures were prepared by 3D printing technology. Three kinds of PVA bottom dressings showed high quality consistency, and the greater the number of leak holes, the higher the porosity value of the dressing, while the swelling ratio value of the bottom layer dressing with three holes was the lowest. Finally, three types of BBR-Ag NP composite antibacterial dressings (3D-BBR-Ag NP) can be obtained by self-assembling of the top dressing, the intermediate layer dressing, and the bottom dressings with three kinds of leakage structures. The cumulative drug release results showed that dressing with more holes had a faster drug release rate compared to the other two ones with fewer leakage holes. Besides, five drug release kinetic models were used to investigate the cumulative BBR release profiles for three types of 3D-BBR-Ag NP. And the three types of composite dressings showed strong antibacterial activity after 6 h of cultivation with staphylococcus aureus. The study showed that the antibacterial activity of the self-assembled dressing prepared by combination of BBR with Ag NP can be improved, and the drug release rate of the hydrogel dressing can be flexibly controlled through 3D printing technology.
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Affiliation(s)
- Chen Chen
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Maomei Xie
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yueling Yan
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yongyuan Li
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhiyao Li
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Tong Zhang
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zanyan Gao
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | | | - Haixia Wang
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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Devi S, Kumari S, Sharma A, Dhiman M, Thakur M, Kumar A. Boosting the photocatalytic activity of g-C 3N 4 via loading bio-synthesized Ag 0 nanoparticles and imidazole modification for the degradation and mineralization of fluconazole. Environ Sci Pollut Res Int 2024; 31:15851-15871. [PMID: 38305976 DOI: 10.1007/s11356-024-31834-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 12/29/2023] [Indexed: 02/03/2024]
Abstract
The emergence of fluorinated organic compounds in the pharmaceutical, agrochemical, and textile industries has led to a potential increase in the environmental issues and health problems. Herein, a modified heterojunction of bio-synthesized Ag nanoparticles (Ag0 NPs) immobilized on imidazole-modified graphite carbon nitride (Im/g-C3N4) as a suitable support (Ag0/Im/g-C3N4) was hydrothermally synthesized and studied for the photocatalytic removal of the most widely used antifungal organo-fluorine compound-fluconazole (FCZ). The optical properties were thoroughly investigated in the present study, and it was observed that the proposed modification to g-C3N4 has led to the shifting of conduction and valance band edge position (for g-C3N4, -0.73 and 1.54 eV and for ICA, -1.14 and 1.28 eV), narrowing of band gap energies, i.e., 2.01 eV, and reduced charge recombination rate. The external and internal surface morphologies were scrutinized through FE-SEM and HR-TEM analyses. Functionalities and potential crystallinity were investigated using FTIR and XRD techniques. The elemental state and composition of the composite were analyzed via XPS. The obtained results substantiate the intended modifications in the ICA composite. The photocatalyst Ag0/Im/g-C3N4 (ICA) was able to degrade 95.74% of FCZ with a high degradation rate (k1) of 0.0289 min-1 within 2-h of the solar illumination experiment. The overall degradation process was observed to be governed by a pseudo-first-order kinetic model. Detailed parameters such as effects of ions, pH (optimized pH 4, highest degradation rate k1 =0.039 min-1), dissolved organic matter (DOM), and optimization of catalysts dosage were studied. The major reactive oxygen species (ROS) was identified as super-oxide radicals (O2●-). The HR-MS and COD-TOC analysis were used to evaluate the degradation and mineralization of FCZ forced by ICA catalysts. The ICA catalyst was found to be stable and reusable for up to five cycles suggesting towards its potential towards the mitigation of environmental pollutants.
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Affiliation(s)
- Sushma Devi
- Department of Chemistry, School of Basic and Applied Sciences, Maharaja Agrasen University, Atal Shiksha Kunj, Solan (HP), 174103, India
| | - Suman Kumari
- Department of Chemistry, School of Basic and Applied Sciences, Maharaja Agrasen University, Atal Shiksha Kunj, Solan (HP), 174103, India
| | - Arush Sharma
- School of Sciences, Baddi University of Emerging Sciences and Technology, (BUEST) Solan, Himachal Pradesh, 173205, India
| | - Manisha Dhiman
- Department of Chemistry, School of Basic and Applied Sciences, Maharaja Agrasen University, Atal Shiksha Kunj, Solan (HP), 174103, India
- Centre of Excellence in Nanotechnology, Maharaja Agrasen University, Atal Shiksha Kunj, Solan (HP), 174103, India
| | - Manita Thakur
- Department of Chemistry, IEC University, Baddi, Solan, Himachal Pradesh, 174103, India
| | - Ajay Kumar
- Department of Chemistry, School of Basic and Applied Sciences, Maharaja Agrasen University, Atal Shiksha Kunj, Solan (HP), 174103, India.
- Centre of Excellence in Nanotechnology, Maharaja Agrasen University, Atal Shiksha Kunj, Solan (HP), 174103, India.
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Guan Y, Xu F, Sun L, Luo Y, Cheng R, Zou Y, Liao L, Cao Z. Hydrogen Peroxide Electrochemical Sensor Based on Ag/Cu Bimetallic Nanoparticles Modified on Polypyrrole. Sensors (Basel) 2023; 23:8536. [PMID: 37896629 PMCID: PMC10611109 DOI: 10.3390/s23208536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/08/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023]
Abstract
Due to the strong oxidizing properties of H2O2, excessive discharge of H2O2 will cause great harm to the environment. Moreover, H2O2 is also an energetic material used as fuel, with specific attention given to its safety. Therefore, it is of great importance to explore and prepare good sensitive materials for the detection of H2O2 with a low detection limit and high selectivity. In this work, a kind of hydrogen peroxide electrochemical sensor has been fabricated. That is, polypyrrole (PPy) has been electropolymerized on the glass carbon electrode (GCE), and then Ag and Cu nanoparticles are modified together on the surface of polypyrrole by electrodeposition. SEM analysis shows that Cu and Ag nanoparticles are uniformly deposited on the surface of PPy. Electrochemical characterization results display that the sensor has a good response to H2O2 with two linear intervals. The first linear range is 0.1-1 mM (R2 = 0.9978, S = 265.06 μA/ (mM × cm2)), and the detection limit is 0.027 μM (S/N = 3). The second linear range is 1-35 mM (R2 = 0.9969, 445.78 μA/ (mM × cm2)), corresponding to 0.063 μM of detection limit (S/N = 3). The sensor reveals good reproducibility (σ = 2.104), repeatability (σ = 2.027), anti-interference, and stability. The recoveries of the electrode are 99.84-103.00% (for 0.1-1 mM of linear range) and 98.65-104.80% (for 1-35 mM linear range). Furthermore, the costs of the hydrogen peroxide electrochemical sensor proposed in this work are reduced largely by using non-precious metals without degradation of the sensing performance of H2O2. This study provides a facile way to develop nanocomposite electrochemical sensors.
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Affiliation(s)
- Yanxun Guan
- Guangxi Key Laboratory of Information Materials & Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China; (Y.G.); (Y.L.); (R.C.); (Y.Z.); (L.L.)
- School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China
| | - Fen Xu
- Guangxi Key Laboratory of Information Materials & Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China; (Y.G.); (Y.L.); (R.C.); (Y.Z.); (L.L.)
| | - Lixian Sun
- Guangxi Key Laboratory of Information Materials & Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China; (Y.G.); (Y.L.); (R.C.); (Y.Z.); (L.L.)
| | - Yumei Luo
- Guangxi Key Laboratory of Information Materials & Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China; (Y.G.); (Y.L.); (R.C.); (Y.Z.); (L.L.)
| | - Riguang Cheng
- Guangxi Key Laboratory of Information Materials & Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China; (Y.G.); (Y.L.); (R.C.); (Y.Z.); (L.L.)
| | - Yongjin Zou
- Guangxi Key Laboratory of Information Materials & Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China; (Y.G.); (Y.L.); (R.C.); (Y.Z.); (L.L.)
| | - Lumin Liao
- Guangxi Key Laboratory of Information Materials & Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China; (Y.G.); (Y.L.); (R.C.); (Y.Z.); (L.L.)
- School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China
| | - Zhong Cao
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha University of Science & Technology, Changsha 410114, China;
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Shouket S, Khurshid S, Khan J, Batool R, Sarwar A, Aziz T, Alhomrani M, Alamri AS, Sameeh MY, Zubair Filimban F. Enhancement of shelf-life of food items via immobilized enzyme nanoparticles on varied supports. A sustainable approach towards food safety and sustainability. Food Res Int 2023; 169:112940. [PMID: 37254364 DOI: 10.1016/j.foodres.2023.112940] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 04/28/2023] [Accepted: 05/02/2023] [Indexed: 06/01/2023]
Abstract
This study was designed to extend the shelf life of fruits and vegetables through a novel technique based on utilization of microbially driven enzyme glucose oxidase and casting a fine layer of hydrogen peroxide on the food item that protected the fruit from decay. The produced nanoparticles (ZnO, Ag) were ligated with Glucose Oxidize (GOx) purified from Aspergillus niger. Post ligation studies revealed that ligated enzymes display relatively enhanced activity. Four types of sprays were prepared in order to compare their effectiveness. Glucose oxidase/silver nanoparticles (GOx/AgNPs), glucose oxidase/zinc oxide nanoparticles (GOx/ZnONPs), AgNPs and ZnONPs sprays were applied to guava fruit samples as post-harvest therapeutic agents for a period of 15 days. Fruit quality parameters such as total suspended solids (TSS), pH, weight loss, DPPH free radical capturing performance and firmness confirms that usage of the bioconjugates especially that of GOx/ZnONP was curiously active to maintain the physical appearance of fruit well along with no such deterioration in chemical composition of fruit. Consequently, enzymes ligated on the surface of nanoparticles (ZnONP) are exceptional for extension of post-harvest shelf life of fruits such as guava.
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Affiliation(s)
- Sumaira Shouket
- Department of Chemistry, Government College University Lahore, Lahore 54000, Pakistan
| | - Shazia Khurshid
- Department of Chemistry, Government College University Lahore, Lahore 54000, Pakistan.
| | - Jahangir Khan
- Department of Chemistry, Government College University Lahore, Lahore 54000, Pakistan
| | - Razia Batool
- Department of Forensic and Toxicology, Sahara medical college Narowal, Pakistan
| | - Abid Sarwar
- Food and Biotechnology Research Center, Pakistan Council of Scientific Industrial Research (PCSIR) Lahore, 54600, Pakistan
| | - Tariq Aziz
- School of Food & Biological Engineering, Jiangsu University Zhenjiang, 212013, China.
| | - Majid Alhomrani
- Department of Clinical Laboratory Sciences, The Faculty of Applied Medical Sciences, Taif University P.O.Box 11099, Taif 21944, Saudi Arabia
| | - Abdulhakeem S Alamri
- Department of Clinical Laboratory Sciences, The Faculty of Applied Medical Sciences, Taif University P.O.Box 11099, Taif 21944, Saudi Arabia
| | - Manal Y Sameeh
- Chemistry Department, Faculty of Applied Sciences, Al-Leith University College, Umm Al-Qura University, Makkah 24831, Saudi Arabia 6
| | - Faten Zubair Filimban
- Division of Plant Sciences, Department of Biology, King Abdulaziz University, Jeddah 21551, Saudi Arabia
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Arbi HM, Yadav AA, Anil Kumar Y, Moniruzzaman M, Alzahmi S, Obaidat IM. Polypyrrole-Assisted Ag Doping Strategy to Boost Co(OH) 2 Nanosheets on Ni Foam as a Novel Electrode for High-Performance Hybrid Supercapacitors. Nanomaterials (Basel) 2022; 12:nano12223982. [PMID: 36432267 PMCID: PMC9697904 DOI: 10.3390/nano12223982] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/08/2022] [Accepted: 11/08/2022] [Indexed: 05/25/2023]
Abstract
Battery-type electrode materials have attracted much attention as efficient and unique types of materials for hybrid battery supercapacitors due to their multiple redox states and excellent electrical conductivity. Designing composites with high chemical and electrochemical stabilities is beneficial for improving the energy storage capability of battery-type electrode materials. We report on an interfacial engineering strategy to improve the energy storage performance of a Co(OH)2-based battery-type material by constructing polypyrrole-assisted and Ag-doped (Ag-doped@Co(OH)2@polypyrrole) nanosheets (NSs) on a Ni foam using a hydrothermal process that provides richer electroactive sites, efficient charge transportation, and an excellent mechanical stability. Physical characterization results revealed that the subsequent decoration of Ag nanoparticles on Co(OH)2 nanoparticles offered an efficient electrical conductivity as well as a reduced interface adsorption energy of OH- in Co(OH)2 nanoparticles as compared to Co(OH)2@polypyrrole-assisted nanoparticles without Ag particles. The heterogeneous interface of the Ag-doped@Co(OH)2@polypyrrole composite exhibited a high specific capacity of 291.2 mAh g-1 at a current density of 2 A g-1, and showed a good cycling stability after 5000 cycles at 5 A g-1. The specific capacity of the doped electrode was enhanced approximately two-fold compared to that of the pure electrode. Thus, the fabricated Ag-doped@Co(OH)2@polypyrrole nanostructured electrodes can be a potential candidate for fabricating low-cost and high-performance energy storage supercapacitor devices.
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Affiliation(s)
- Hammad Mueen Arbi
- Department of Physics, United Arab Emirates University, Al Ain 15551, United Arab Emirates
| | - Anuja A. Yadav
- Department of Automotive Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, Gyeongbuk, Korea
| | - Yedluri Anil Kumar
- Department of Physics, United Arab Emirates University, Al Ain 15551, United Arab Emirates
- National Water and Energy Center, United Arab Emirates University, Al Ain 15551, United Arab Emirates
| | - Md Moniruzzaman
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam-daero, Seongnam-si 13120, Gyeonggi-do, Korea
| | - Salem Alzahmi
- National Water and Energy Center, United Arab Emirates University, Al Ain 15551, United Arab Emirates
- Department of Chemical & Petroleum Engineering, United Arab Emirates University, Al Ain 15551, United Arab Emirates
| | - Ihab M. Obaidat
- Department of Physics, United Arab Emirates University, Al Ain 15551, United Arab Emirates
- National Water and Energy Center, United Arab Emirates University, Al Ain 15551, United Arab Emirates
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Liu J, Mou Y, Huang Y, Zhao J, Peng Y, Chen M. Effects of Bonding Materials on Optical-Thermal Performances and High-Temperature Reliability of High-Power LED. Micromachines (Basel) 2022; 13:mi13060958. [PMID: 35744572 PMCID: PMC9227735 DOI: 10.3390/mi13060958] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/11/2022] [Accepted: 06/15/2022] [Indexed: 11/16/2022]
Abstract
The die-bonding layer between chips and substrate determinates the heat conduction efficiency of high-power LED. Sn-based solder, AuSn20 eutectic, and nano-Ag paste were widely applied to LED interconnection. In this paper, the optical-thermal performances and high-temperature reliability of LED with these bonding materials have systematically compared and studied. The thermal conductivity, electrical resistivity, and mechanical property of these bonding materials were characterized. The LED module packaged with nano-Ag has a minimum working temperature of 21.5 °C. The total thermal resistance of LED packaged with nano-Ag, Au80Sn20, and SAC305 is 4.82, 7.84, and 8.75 K/W, respectively, which is 4.72, 6.14, and 7.84 K/W higher after aging for 500 h. Meanwhile, the junction temperature change of these LEDs increases from 2.33, 3.76, and 4.25 °C to 4.34, 4.81, and 6.41 °C after aging, respectively. The thermal resistance of the nano-Ag, Au80Sn20 and SAC305 layer after aging is 1.5%, 65.7%, and 151.5% higher than before aging, respectively. After aging, the LED bonded with nano-Ag has the better optical performances in spectral intensity and light output power, which indicates its excellent heat dissipation can improve the light efficiency. These results demonstrate the nano-Ag bonding material could enhance the optical-thermal performances and high-temperature reliability of high-power LED.
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Affiliation(s)
- Jiaxin Liu
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (J.L.); (Y.M.)
| | - Yun Mou
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (J.L.); (Y.M.)
| | - Yueming Huang
- School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (Y.H.); (J.Z.)
| | - Jiuzhou Zhao
- School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (Y.H.); (J.Z.)
| | - Yang Peng
- School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (Y.H.); (J.Z.)
- Correspondence: (Y.P.); (M.C.)
| | - Mingxiang Chen
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (J.L.); (Y.M.)
- Correspondence: (Y.P.); (M.C.)
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10
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Gao S, Lin Y, Zhao X, Gao J, Xie S, Gong W, Yu Y, Lin J. Label-free surface enhanced Raman spectroscopy analysis of blood serum via coffee ring effect for accurate diagnosis of cancers. Spectrochim Acta A Mol Biomol Spectrosc 2022; 267:120605. [PMID: 34802933 DOI: 10.1016/j.saa.2021.120605] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 11/04/2021] [Accepted: 11/07/2021] [Indexed: 05/20/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) is considered as an ultrasensitive, non-invasive as well as rapid detection technology for cancer diagnosis. In this study, we developed a novel blood serum analysis strategy using coffee ring effect-assisted label-free SERS for different types of cancer screening. Additionally, the pretreated Ag nanoparticles (Ag NPs) were mixed with the serum from liver cancer patients (n = 40), prostate cancer patients (n = 32) and healthy volunteers (n = 30) for SERS measurement. The droplets of Ag NPs-serum mixture formed the coffee ring on the peripheral after air-drying, and thus extremely enhancing Raman signal and ensuring the stability and reliability of SERS detection. Partial least square (PLS) and support vector machine (SVM) algorithms were utilized to establish the diagnosis model for SERS spectra data classifying, yielding the high diagnostic accuracy of 98.04% for normal group and two types of cancers simultaneously distinguishing. More importantly, for the unknown testing set, an ideal diagnostic accuracy of 100% could be achieved by PLS-SVM algorithm for differentiating cancers from the normal group. The results from this exploratory work demonstrate that serum SERS detection combined with PLS-SVM diagnostic algorithm and coffee ring effect has great potential for the noninvasive and label-free detection of cancer.
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Affiliation(s)
- Siqi Gao
- Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province and the Ministry of Education, College of Physics and Optoelectronic Engineering, Shenzhen University, China; Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, Fujian, China
| | - Yamin Lin
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, Fujian, China
| | - Xin Zhao
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, Fujian, China
| | - Jiamin Gao
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, Fujian, China
| | - Shusen Xie
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, Fujian, China
| | - Wei Gong
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, Fujian, China
| | - Yun Yu
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, China.
| | - Juqiang Lin
- School of Opto-electronic and Communication Engineering, Xiamen University of Technology, Xiamen, Fujian, China; Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, Fujian, China.
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11
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Honarmand T, Sharif AP, Salehzadeh A, Jalali A, Nikokar I. Does Conjugation of Silver Nanoparticles with Thiosemicarbazide Increase Their Antibacterial Properties? Microb Drug Resist 2022; 28:293-305. [PMID: 35005985 DOI: 10.1089/mdr.2020.0557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The opportunistic pathogen, Pseudomonas aeruginosa, uses different mechanisms as well as biofilm production to acquire antibiotic resistance. The polysaccharide synthesis locus (psl) genes play an important role in P. aeruginosa biofilm formation. Therefore, targeting the expression of psl genes can be a suitable strategy to prevent the formation of biofilms by antibiotic-resistant strains. Today, advances in nanotechnology provide a novel potential strategy to combat antibiotic-resistant bacteria. In this study, the silver nanoparticles (Ag NPs) synthesized using a chemical co-precipitation method and, after conjugation with thiosemicarbazide, their effect on the biofilm-forming ability are studied in P. aeruginosa isolates. Chemical properties of synthesized nanoparticles were determined by scanning and transmission electron microscopy, Fourier transform infrared spectroscopy, diffuse reflectance spectroscopy, ultraviolet-visible spectroscopy, X-ray diffraction, and energy dispersive X-ray spectroscopy. The results confirmed the spherical/cubic morphology, solution stability, and good dispersion of Ag@Glu-TSC NPs with an average size of 40-60 nm. In addition, minimum inhibitory concentration values of functionalized Ag NPs were at least twofold lower than the Ag NPs (alone). The quantitative PCR data analysis showed a decrease in the expression of the pslA gene in the presence of Ag@Glu-TSC NPs, up to 60%, which was associated with a reduction of biofilm formation compared to control. In conclusion, the Ag@Glu-TSC NPs can be considered a new inhibitor of biofilm production in antibiotic-resistant bacteria.
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Affiliation(s)
- Tayebeh Honarmand
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Ardalan Panahi Sharif
- Department of Medical Sciences, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Ali Salehzadeh
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Amir Jalali
- Department of Biology, Faculty of Sciences, Arak University, Arak, Iran
| | - Iraj Nikokar
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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12
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Chen JW, Yang S, Li CH, Huang YY, Chen CH, Yang CC. Mesh size control in forming an Ag/AgO nano-network structure for transparent conducting application. Nanotechnology 2022; 33:135201. [PMID: 34905734 DOI: 10.1088/1361-6528/ac4305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
The variation behaviors of the morphology, transmission, and sheet resistance of the surface Ag/AgO nano-network (NNW) structures fabricated under different illumination conditions and with different Ag deposition thicknesses and thermal annealing temperatures in forming initial Ag nanoparticles (NPs) are studied. Generally, an NNW structure with a smaller mesh size or a denser branch distribution has a lower transmission and a lower sheet resistance level. Under the fabrication condition of a broader illumination spectrum, a lower thermal annealing temperature, or a thicker Ag deposition, we can obtain an NNW structure of a smaller mesh size. The mesh size of an NNW structure is basically controlled by the seed density of Brownian tree (BT) at the beginning of light illumination. A BT seed can be formed through a stronger local localized surface plasmon resonance for accelerating Ag oxidation in a certain region. Once an Ag/AgO BT seed is formed, the surrounding Ag NPs are reorganized to form the branches of a BT. Multiple BTs are connected to form a large-area NNW structure, which can serve as a transparent conductor. Under the fabrication conditions of a broader illumination spectrum, 3 nm Ag deposition, and 100 °C thermal annealing, we can implement an NNW structure to achieve ∼1.15μm in mesh size, ∼90 Ω sq-1in sheet resistance, and 93%-77% in transmittance within the wavelength range between 370 and 700 nm.
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Affiliation(s)
- Jia-Wei Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Shaobo Yang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Chia-Hao Li
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Yang-Yi Huang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Chen-Hua Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - C C Yang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
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13
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Liu K, Dai L, Li C. A lignocellulose-based nanocomposite hydrogel with pH-sensitive and potent antibacterial activity for wound healing. Int J Biol Macromol 2021; 191:1249-54. [PMID: 34634323 DOI: 10.1016/j.ijbiomac.2021.10.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 09/28/2021] [Accepted: 10/01/2021] [Indexed: 11/22/2022]
Abstract
Hydrogel dressings with similar structural characteristics to the extracellular matrix and tunable physicochemical properties have become promising candidates for wound healing. However, the fabrication of an ideal hydrogel dressing with low-cost, good biocompatibility, excellent hemostatic capacity, potent and broad-spectrum antibacterial activity remains a huge challenge. Herein, a lignocellulose-based nanocomposite hydrogel (ATC/SA/PVA) is fabricated by simply mixing Ag nanoparticles loaded, tannic acid-decorated lignocellulose nanofibrils with sodium alginate and polyvinyl alcohol. Based on the dynamic borate ester bonds and multiple weak hydrogen bonds, the fabricated hydrogel exhibits excellent flexibility and self-healing performance. Its highly porous structure endows the gel excellent blood and tissue exudates absorption ability. Interestingly, the release behavior of Ag nanoparticles from hydrogel displays pH dependence, which can facilitate the accumulation of Ag nanoparticles at the wound site, thereby accelerating the process of wound healing. In vitro antibacterial assay demonstrates the potent antibacterial ability of hydrogel against both Gram-positive (S. aureus) and negative bacteria (E. coli). More importantly, in vivo investigations reveal that such hydrogel can effectively accelerate tissue regeneration and wound healing with no obvious adverse effects. All these results suggest that this nanocomposite hydrogel would be a promising candidate to accelerate wound healing.
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14
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Zhang S, Xu Z, Guo J, Wang H, Ma Y, Kong X, Fan H, Yu Q. Layer-by-Layer Assembly of Polystyrene/Ag for a Highly Reproducible SERS Substrate and Its Use for the Detection of Food Contaminants. Polymers (Basel) 2021; 13:3270. [PMID: 34641085 PMCID: PMC8512144 DOI: 10.3390/polym13193270] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/12/2021] [Accepted: 09/17/2021] [Indexed: 11/23/2022] Open
Abstract
Polystyrene (PS) spheres were prepared through an emulsifier-free emulsion polymerization method, in which the reaction time, ionic strength, concentrations of copolymer were studied in detail. The resulting PS microspheres and Ag nanoparticles were used to construct a surface enhanced Raman scattering (SERS) substrate by a layer-by-layer assembly method. A relatively uniform distribution of PS/Ag in the films was obtained, and the multilayer substrate presented excellent SERS reproducibility and a tunable enhancement effect. The SERS substrate was used for detecting harmful pesticides (malachite green and dimetridazole) in food samples, with a limit of detection as low as 3.5 ppb. The obtained plasmonic composite has a promising future in the field of SERS sensing.
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Affiliation(s)
- Sihan Zhang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China; (S.Z.); (Z.X.); (H.F.)
| | - Zhihua Xu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China; (S.Z.); (Z.X.); (H.F.)
| | - Jiaqi Guo
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources and Joint International Research Lab of Lignocellulosic Functional Materials, Nanjing Forestry University, Nanjing 210037, China;
| | - Haiying Wang
- School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 210037, China;
| | - Yibo Ma
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland;
| | - Xianming Kong
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China; (S.Z.); (Z.X.); (H.F.)
| | - Hongtao Fan
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China; (S.Z.); (Z.X.); (H.F.)
| | - Qian Yu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China; (S.Z.); (Z.X.); (H.F.)
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15
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Jin L, Zhang H, Li S, Lei S, Liu M, Zeng Z, Yu C, Cheng S, Xie J. Exchange of Li and AgNO 3 Enabling Stable 3D Lithium Metal Anodes with Embedded Lithophilic Nanoparticles and a Solid Electrolyte Interphase Inducer. ACS Appl Mater Interfaces 2021; 13:38425-38431. [PMID: 34346230 DOI: 10.1021/acsami.1c11733] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Three-dimensional (3D) current collectors can effectively mitigate the volumetric expansion of working lithium metal anodes (LMAs). However, the practical utilization of 3D current collectors for lithium metal batteries remains unsatisfactory because of inhomogeneous deposition of lithium ions and an unstable solid electrolyte interphase (SEI). Herein, a facile method based on the exchange reaction between Li and AgNO3 is exploited to embed Ag nanoparticles (NPs) and LiNO3 in a carbon paper (ALCP@Li). The Ag NPs act as a seed for even lithium deposition inside the carbon matrix by virtue of their excellent lithiophilicity. Simultaneously, LiNO3 plays an effective role in stabilizing LMAs by evolving a robust N-rich SEI. As a result, such 3D LMAs show a high Coulombic efficiency in half-cells (200 cycles, 99% at 1 mA cm-2, 1 mAh cm-2) and a low overpotential (60 mV). When paired with commercial thick NCM622 and LiFePO4 cathodes, the 3D LMA-based full cells exhibit stable cycling in carbonate electrolytes.
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Affiliation(s)
- Liu Jin
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Han Zhang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Siwu Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Sheng Lei
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Mengchuang Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Ziqi Zeng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Chuang Yu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Shijie Cheng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Jia Xie
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
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Wang J, Zou L, Xu J, Zhang R, Zhang H. Molecularly imprinted fluoroprobes doped with Ag nanoparticles for highly selective detection of oxytetracycline in real samples. Anal Chim Acta 2021; 1161:338326. [PMID: 33896557 DOI: 10.1016/j.aca.2021.338326] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 02/12/2021] [Accepted: 02/13/2021] [Indexed: 02/07/2023]
Abstract
A molecularly imprinted polymer (MIP), which is synthesized by a nanomolding process around a template, has emerged as a promising analytical tool for environmental quality monitoring and food safety test. In this work, a fluoroprobe with Ag-doped MIP nanolayer (16 nm thickness) is successfully prepared for the highly selective detection of oxytetracycline (OTC) in real samples (i.e. Yangtze River water, swine urine). In the MIP nanolayer, two functional monomers (i.e. 4-(2-acrylamidoethylcarbamoyl)-3-fluorophenylboronic acid, methacrylic acid) synergistically constitute the specific recognition sites. Meanwhile, the doped Ag enhances the detection sensitivity (with a detection limit of 5.38 nM) and accelerates the detection rate (within 2.5 min) even in real samples. Therefore, the present study paves the way for the preparation of MIP-based fluoroprobes, showing great prospects in environmental quality and food safety tests.
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Chen CY, Ni CC, Wu RN, Kuo SY, Li CH, Kiang YW, Yang CC. Surface plasmon coupling effects on the förster resonance energy transfer from quantum dot into rhodamine 6G. Nanotechnology 2021; 32:295202. [PMID: 33848997 DOI: 10.1088/1361-6528/abf775] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 04/13/2021] [Indexed: 06/12/2023]
Abstract
Rhodamine 6G (R6G) molecules linked CdZnSeS/ZnS green-emitting quantum dots (QDs) are self-assembled onto Ag nanoparticles (NPs) for studying the surface plasmon (SP) coupling effect on the Förster resonance energy transfer (FRET) process from QD into R6G. SP coupling can enhance the emission efficiency of QD such that FRET has to compete with QD emission for transferring energy into R6G. It is found that FRET efficiency is reduced under the SP coupling condition. Although R6G emission efficiency can also be enhanced through SP coupling when it is directly linked onto Ag NP, the enhancement decreases when R6G is linked onto QD and then the QD-R6G complex is self-assembled onto Ag NP. In particular, R6G emission efficiency can be reduced through SP coupling when the number of R6G molecules linked onto a QD is high. A rate-equation model is built for resembling the measured photoluminescence decay profiles and providing us with more detailed explanations for the observed FRET and SP coupling behaviors.
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Affiliation(s)
- Chien-Yu Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Chia-Chun Ni
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Ruei-Nan Wu
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Sheng-Yang Kuo
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Chia-Hao Li
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Yean-Woei Kiang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - C C Yang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
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18
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Ozaki K, Nishiyama F, Takahiro K. Color Changes in Ag Nanoparticle Aggregates Placed in Various Environments: Their Application to Air Monitoring. Nanomaterials (Basel) 2021; 11:701. [PMID: 33799548 DOI: 10.3390/nano11030701] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/06/2021] [Accepted: 03/09/2021] [Indexed: 01/27/2023]
Abstract
Fresh Ag nanoparticles (NPs) dispersed on a transparent SiO2 exhibit an intense optical extinction band originating in localized surface plasmon resonance (LSPR) in the visible range. The intensity of the LSPR band weakened when the Ag NPs was stored in ambient air for two weeks. The rate of the weakening and the LSPR wavelength shift, corresponding to visual chromatic changes, strongly depended on the environment in which Ag NPs were set. The origin of a chromatic change was discussed along with both compositional and morphological changes. In one case, bluish coloring followed by a prompt discoloring was observed for Ag NPs placed near the ventilation fan in our laboratory, resulted from adsorption of large amounts of S and Cl on Ag NP surfaces as well as particle coarsening. Such color changes deduce the presence of significant amounts of S and Cl in the environment. In another case, a remarkable blue-shift of the LSPR band was observed for the Ag NPs stored in the desiccator made of stainless steel, originated in the formation of CN and/or HCN compounds and surface roughening. Their color changed from maroon to reddish, suggesting that such molecules were present inside the desiccator.
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Lermusiaux L, Many V, Barois P, Ponsinet V, Ravaine S, Duguet E, Tréguer-Delapierre M, Baron A. Toward Huygens' Sources with Dodecahedral Plasmonic Clusters. Nano Lett 2021; 21:2046-2052. [PMID: 33599504 DOI: 10.1021/acs.nanolett.0c04666] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The design and chemical synthesis of plasmonic nanoresonators exhibiting a strong magnetic response in the visible is a key requirement to the realization of efficient functional and self-assembled metamaterials. However, novel applications like Huygens' metasurfaces or mu-near-zero materials require stronger magnetic responses than those currently reported. Our numerical simulations demonstrate that the specific dodecahedral morphology, whereby 12 silver satellites are located on the faces of a nanosized dielectric dodecahedron, provides sufficiently large electric and magnetic dipolar and quadrupolar responses that interfere to produce so-called generalized Huygens' sources, fulfilling the generalized Kerker condition. Using a multistep colloidal engineering approach, we synthesize highly symmetric plasmonic nanoclusters with a controlled silver satellite size and show that they exhibit a strong forward scattering that may be used in various applications such as metasurfaces or perfect absorbers.
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Affiliation(s)
- Laurent Lermusiaux
- Université de Bordeaux, CNRS, ICMCB, Bordeaux INP, UMR 5026, Pessac 33600, France
| | - Véronique Many
- Université de Bordeaux, CNRS, ICMCB, Bordeaux INP, UMR 5026, Pessac 33600, France
- Université de Bordeaux, CNRS, CRPP, UMR 5031, Pessac 33600, France
| | - Philippe Barois
- Université de Bordeaux, CNRS, CRPP, UMR 5031, Pessac 33600, France
| | | | - Serge Ravaine
- Université de Bordeaux, CNRS, CRPP, UMR 5031, Pessac 33600, France
| | - Etienne Duguet
- Université de Bordeaux, CNRS, ICMCB, Bordeaux INP, UMR 5026, Pessac 33600, France
| | | | - Alexandre Baron
- Université de Bordeaux, CNRS, CRPP, UMR 5031, Pessac 33600, France
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Hasan I, Shekhar C, Alharbi W, Abu Khanjer M, Khan RA, Alsalme A. A Highly Efficient Ag Nanoparticle-Immobilized Alginate-g-Polyacrylonitrile Hybrid Photocatalyst for the Degradation of Nitrophenols. Polymers (Basel) 2020; 12:E3049. [PMID: 33352658 PMCID: PMC7766039 DOI: 10.3390/polym12123049] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/13/2020] [Accepted: 12/15/2020] [Indexed: 12/15/2022] Open
Abstract
Herein, we report PAN-g-Alg@Ag-based nanocatalysts synthesis via in situ oxidative free-radical polymerization of acrylonitrile (AN) using Alg@Ag nanoparticles (Alg@Ag NPs). Various analytical techniques, including FTIR, XRD, SEM, TEM, UV-Vis, and DSC, were employed to determine bonding interactions and chemical characteristics of the nanocatalyst. The optimized response surface methodology coupled central composite design (RSM-CCD) reaction conditions were a 35-min irradiation time in a 70-mg L-1 2,4-dinitrophenol (DNP) solution at pH of 4.68. Here, DNP degradation was 99.46% at a desirability of 1.00. The pseudo-first-order rate constant (K1) values were 0.047, 0.050, 0.054, 0.056, 0.059, and 0.064 min-1 with associated half-life (t1/2) values of 14.74, 13.86, 12.84, 12.38, 11.74, 10.82, and 10.04 min that corresponded to DNP concentrations of 10, 20, 30, 40, 50, 60, and 70 mg L-1, respectively, in the presence of PAN-g-Alg@Ag (0.03 g). The results indicate that the reaction followed the pseudo-first-order kinetic model with an R2 value of 0.99. The combined absorption properties of PAN and Alg@Ag NPs on copolymerization on the surface contributed more charge density to surface plasmon resonance (SPR) in a way to degrade more and more molecules of DNP together with preventing the recombination of electron and hole pairs within the photocatalytic process.
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Affiliation(s)
- Imran Hasan
- Environmental Research Laboratory, Department of Chemistry, Chandigarh University, Gharuan, Mohali 140301, Punjab, India; (I.H.); (C.S.)
| | - Charu Shekhar
- Environmental Research Laboratory, Department of Chemistry, Chandigarh University, Gharuan, Mohali 140301, Punjab, India; (I.H.); (C.S.)
| | - Walaa Alharbi
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box-9004, Abha 62529, Saudi Arabia;
| | - Maymonah Abu Khanjer
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.A.K.); (R.A.K.)
| | - Rais Ahmad Khan
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.A.K.); (R.A.K.)
| | - Ali Alsalme
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.A.K.); (R.A.K.)
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Kuo DH, Abdullah H, Gultom NS, Hu JY. Ag-Decorated MoS x Laminar-Film Electrocatalyst Made with Simple and Scalable Magnetron Sputtering Technique for Hydrogen Evolution: A Defect Model to Explain the Enhanced Electron Transport. ACS Appl Mater Interfaces 2020; 12:35011-35021. [PMID: 32705863 DOI: 10.1021/acsami.0c09358] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The active edge site, surface defect, and noble-metal nanoparticle have been engineered to improve the electrocatalytic activity of earth-abundant and layered MoS2, but there was no single and facile process to achieve all yet. Here, basal-plane-defected Ag/MoSx lamellae with different Ag contents were deposited by one-step, single-cermet target (ceramic + metal) magnetron sputtering for the electrocatalytic hydrogen evolution reaction (HER). Ag/MoSx (10 vol %) showed a current density of 10 mA/cm2 at an overpotential of 120 mV with a Tafel slope of 42 mV/dec in a 0.5 M H2SO4 solution. The HER performance of Ag-MoSx lamellae was higher than that of the Ag-free one due to the activated basal antisite defects and the decorated Ag for enhancing electron transport. The green magnetron sputtering technique together with the target design has achieved Ag/MoSx lamellae with the film grown using the advantages of active edge-up lamella, S vacancy-type basal sites, and electron transport-enhanced Ag interconnect for enhancing hydrogen evolution.
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Affiliation(s)
- Dong-Hau Kuo
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Road, Taipei 10607, Taiwan
| | - Hairus Abdullah
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Road, Taipei 10607, Taiwan
| | - Noto Susanto Gultom
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Road, Taipei 10607, Taiwan
| | - Jia-Yu Hu
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Road, Taipei 10607, Taiwan
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22
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Manikkaraja C, Mahboob S, Al-Ghanim KA, Rajesh D, Selvaraj K, Sivakumar M, Al-Misned F, Ahmed Z, Archunan G. A novel method to detect bovine sex pheromones using l-tyrosine-capped silver nanoparticles: Special reference to nanosensor based estrus detection. J Photochem Photobiol B 2019; 203:111747. [PMID: 31884348 DOI: 10.1016/j.jphotobiol.2019.111747] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 12/10/2019] [Accepted: 12/12/2019] [Indexed: 11/16/2022]
Abstract
In the present study, a simple and a selective colorimetric method for pheromone detection to diagnose estrus in cattle was established based on the l-tyrosine functionalized silver nanoparticles (l-TyrAgNPs). The synthesized silver nanoparticles was spotted by color change (colorless to pale yellow) due to surface plasmon resonance (SPR). In order to confirm, Ag nanoparticles was characterized by field emission scanning electron microscopy (FESEM), dynamic light scattering (DLS) and zeta potential, X-ray diffraction (XRD) and UV- Vis spectrophotometer. It was found that the pre-colored Ag colloids could be turned from yellow to reddish-brown by the addition of the sex pheromones such as acetic acid or propionic acid, which may have potential application in the colorimetric sensor. The augmented optical nature of nanoparticles furnishes a suitable base to develop a colorimetric sensor for bovine sex pheromones detection. In addition, the computational analyses are critically required to validate residual interactions of bovine odorant-binding protein (OBP) with pheromones. The method was successfully applied to the detection of acetic acid or propionic acid using a biological molecule l-Tyr AgNPs. These results clearly indicate that the biosynthesis of l-Tyr AgNPs can be used as a promising colorimetric sensor for accurate time of estrus prediction in bovine.
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Affiliation(s)
- Chidhambaram Manikkaraja
- Pheromone Technology Lab, Department of Animal Science, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India
| | - Shahid Mahboob
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Khalid A Al-Ghanim
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Durairaj Rajesh
- Pheromone Technology Lab, Department of Animal Science, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India; Research Institute in Semiochemistry and Applied Ethology (IRSEA), Quartier Salignan, 84400 APT, France
| | - Kumaresan Selvaraj
- Pheromone Technology Lab, Department of Animal Science, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India
| | - Muthusamy Sivakumar
- Division of Nanoscience and Technology, Anna University-BIT Campus, Tiruchirappalli 620024, Tamil Nadu, India
| | - Fahad Al-Misned
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Zubair Ahmed
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Govindaraju Archunan
- Pheromone Technology Lab, Department of Animal Science, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India.
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Sundar S, Kim KJ, Kwon SJ. Observation of Single Nanoparticle Collisions with Green Synthesized Pt, Au, and Ag Nanoparticles Using Electrocatalytic Signal Amplification Method. Nanomaterials (Basel) 2019; 9:nano9121695. [PMID: 31783669 PMCID: PMC6956323 DOI: 10.3390/nano9121695] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/18/2019] [Accepted: 11/19/2019] [Indexed: 12/31/2022]
Abstract
This work describes the tailored design, green synthesis and characterization of noble metal (Pt, Ag and Au) nanoparticles (NPs) using Sapinduss Mukkorossi fruit extract (SMFE) and its signal NP collision signal response, based on the principle of the electrocatatlytic amplication (EA) method. Here, the SMFE can act as both the reducing and the capping agent for the fabrication of noble nanometals. The SMFE-capped NPs was available for the observation of a single NP collision signal. Two general types of current response were observed: a staircase current response for the Pt or Au NPs, and a blip/spike current response for Ag NPs. These results demonstrated that the eco-friendly synthesized SMFE-capped NPs maintained their electrocatalytic activity, therefore they can be used for the single NP experiments and place an arena for future biosensing applications.
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24
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Aygün A, Gülbağça F, Nas MS, Alma MH, Çalımlı MH, Ustaoglu B, Altunoglu YC, Baloğlu MC, Cellat K, Şen F. Biological synthesis of silver nanoparticles using Rheum ribes and evaluation of their anticarcinogenic and antimicrobial potential: A novel approach in phytonanotechnology. J Pharm Biomed Anal 2019; 179:113012. [PMID: 31791838 DOI: 10.1016/j.jpba.2019.113012] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/22/2019] [Accepted: 11/25/2019] [Indexed: 12/21/2022]
Abstract
This paper reports the anticarcinogenic and antimicrobial properties of silver nanoparticles (Ag NPs) obtained by green synthesis using the extract of Rheum ribes (R. ribes), a medicinal plant. For the synthesis of Ag NPs, the ethanolic extracts of R. ribes were used as a reducing as well as the stabilizing agent. For the characterization of Ag NPs, advanced analytical methods such as transmission electron microscopy (TEM), X-Ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and UV-vis spectrophotometry were performed. The synthesized Ag NPs obtained from R. ribes were evaluated as a cytotoxic agent against MDA-MB-231 breast carcinoma cell line. The IC50 values of the nanoparticles were ranged from 165 to 99 μg/mL against MDA-MB 231 cell line for 24 h and 48 h, respectively. The results show that the use of Ag NPs at low concentrations show the toxic effect in the cancer cells. In addition, the results of experiments on gram-positive (Staphylococcus aureus (S. aureus), Methicillin-resistant Staphylococcus aureus (MRSA) and Bacillus subtilis (B. subtilis)) and gram-negative (Escherichia coli (E. coli)) bacteria showed that the Ag NPs had high antimicrobial activity. The results suggest that Ag NPs can be developed as potential anticancer and antibacterial agents.
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Affiliation(s)
- Ayşenur Aygün
- Sen Research Group, Department of Biochemistry, University of Dumlupınar, 43000 Kütahya, Turkey
| | - Fulya Gülbağça
- Sen Research Group, Department of Biochemistry, University of Dumlupınar, 43000 Kütahya, Turkey
| | - Mehmet Salih Nas
- Department of Environmental, Faculty of Engineering, University of Igdir, 76000 Igdir, Turkey.
| | - Mehmet Hakkı Alma
- Department of Environmental, Faculty of Engineering, University of Igdir, 76000 Igdir, Turkey
| | - Mehmet Harbi Çalımlı
- Medical Services and Technical Department of Tuzluca Vocational School, Igdir University, Igdir, Turkey.
| | - Buket Ustaoglu
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, University of Kastamonu, Kastamonu, Turkey
| | - Yasemin Celik Altunoglu
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, University of Kastamonu, Kastamonu, Turkey
| | - Mehmet Cengiz Baloğlu
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, University of Kastamonu, Kastamonu, Turkey
| | - Kemal Cellat
- Sen Research Group, Department of Biochemistry, University of Dumlupınar, 43000 Kütahya, Turkey
| | - Fatih Şen
- Sen Research Group, Department of Biochemistry, University of Dumlupınar, 43000 Kütahya, Turkey.
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Thorat N, Yadav A, Yadav M, Gupta S, Varma R, Pillai S, Fernandes R, Patel M, Patel N. Ag loaded B-doped-g C 3N 4 nanosheet with efficient properties for photocatalysis. J Environ Manage 2019; 247:57-66. [PMID: 31229786 DOI: 10.1016/j.jenvman.2019.06.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/07/2019] [Accepted: 06/09/2019] [Indexed: 06/09/2023]
Abstract
Three material engineering strategies in the form of doping (Boron-doping), nanostructuring (nanosheet (NS) formation) and decorating with plasmonic nanoparticles (loading with Ag metal), were integrated to improve the photocatalytic activity of graphitic carbon nitride (gC3N4). Concentrations of B-doping and Ag-loading were optimized to maximize the catalytic performance in the final nanocomposite of Ag-loaded B-doped gC3N4 NS. Combined effect of all three strategies successfully produced over 5 times higher rate towards degradation of organic dye pollutant, when compared to unmodified bulk gC3N4. Detailed characterization results revealed that incorporation of B in gC3N4 matrix reduces the band gap to increase the visible light absorption, while specific surface area is significantly enhanced upon formation of NS. Decoration of Ag nanoparticles (NPs) on B-doped gC3N4 NS assists in fast transfer of photogenerated electrons from gC3N4 to Ag NPs owing to the interfacial electric field across the junctions and thus reduces the recombination process. Investigations on individual strategies revealed that decoration of Ag NPs to induce better charge separation, is the most effective route for enhancing the photocatalytic activity.
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Affiliation(s)
- Nirmala Thorat
- Department of Physics, University of Mumbai, Vidyanagari, Santacruz (E), Mumbai, 400098, India
| | - Asha Yadav
- Department of Physics, University of Mumbai, Vidyanagari, Santacruz (E), Mumbai, 400098, India.
| | - Manisha Yadav
- National Centre for Nanosciences & Nanotechnology, University of Mumbai, Vidyanagari, Santacruz (E), Mumbai, 400098, India
| | - Suraj Gupta
- School of Engineering, University of Liverpool, Liverpool, L69 3GH, UK
| | - Ranjana Varma
- Department of Chemistry, Institution of Chemical Technology, Matunga, 400 208, India
| | - Saju Pillai
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum, Kerala, India
| | - Rohan Fernandes
- Department of Physics, University of Mumbai, Vidyanagari, Santacruz (E), Mumbai, 400098, India
| | - Maulik Patel
- School of Engineering, University of Liverpool, Liverpool, L69 3GH, UK
| | - Nainesh Patel
- Department of Physics, University of Mumbai, Vidyanagari, Santacruz (E), Mumbai, 400098, India; National Centre for Nanosciences & Nanotechnology, University of Mumbai, Vidyanagari, Santacruz (E), Mumbai, 400098, India.
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26
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Kwak B, Park S, Lee HS, Kim J, Yoo B. Improved Chloride Ion Sensing Performance of Flexible Ag-NPs/AgCl Electrode Sensor Using Cu-BTC as an Effective Adsorption Layer. Front Chem 2019; 7:637. [PMID: 31616653 PMCID: PMC6768955 DOI: 10.3389/fchem.2019.00637] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 09/04/2019] [Indexed: 11/16/2022] Open
Abstract
We designed the flexible chloride ion selective sensor that directly monitors electrochemical reactions of chloride ions without using a reference electrode. A flexible polytetrafluoroethylene (PTFE) substrate was utilized to provide bendability to the fabricated sensor. As an ion selective material, Ag nanoparticles were employed on the MWCNTs loaded on the PTFE substrate. Enhanced adsorption property of the fabricated sensor toward the chloride ions was given by incorporation of hydrophilic copper benzene-1,3,5-tricarboxylate (Cu-BTC) with great flexibility and stability. Accordingly, compared to the bare sensor the sensing performance of the Cu-BTC treated Ag NPs/AgCl electrode sensor was improved by indicating the decrease in response and recovery time about 4 times. It elucidated that the Cu-BTC layer could work as an effective medium between the Ag-NPs surface and electrolyte containing chloride ions. As a result of contact angle measurement, the hydrophilicity much increased in the Cu-BTC treated sensor because the exposed surface of the sensor not treated by the Cu-BTC largely consisted of hydrophobic MWCNTs. Furthermore, the Cu-BTC layer could hold the electrolyte for effective adsorption of analytes with large specific surface area.
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Affiliation(s)
- Byungkwan Kwak
- Department of Material Science and Chemical Engineering, Hanyang University, Ansan-si, South Korea
| | - Soobin Park
- Department of Material Science and Chemical Engineering, Hanyang University, Ansan-si, South Korea
| | - Han-Seung Lee
- Department of Architectural Engineering, Hanyang University, Ansan-si, South Korea
| | - Jiwon Kim
- Materials Science and Chemical Engineering Center, Institute for Advanced Engineering, Yongin-si, South Korea
| | - Bongyoung Yoo
- Department of Material Science and Chemical Engineering, Hanyang University, Ansan-si, South Korea
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27
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Tsai CE, Yeh SM, Chen CH, Lin HN. Flexible Photocatalytic Paper with Cu 2O and Ag Nanoparticle-Decorated ZnO Nanorods for Visible Light Photodegradation of Organic Dye. Nanoscale Res Lett 2019; 14:204. [PMID: 31201574 PMCID: PMC6570720 DOI: 10.1186/s11671-019-3034-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 05/30/2019] [Indexed: 05/30/2023]
Abstract
We report on the fabrication of flexible photocatalytic paper comprised of Cu2O and Ag nanoparticle (NP)-decorated ZnO nanorods (NRs) and its application in visible light photodegradation of organic dye. ZnO NRs are first grown on a kraft paper substrate using a hydrothermal method. The NRs are subsequently decorated with Cu2O, Ag, or both NPs formed by photoreduction processes. Scanning electron microscopy and X-ray diffraction analysis confirm the crystallinity of ZnO NRs. Transmission electron microscopy analysis confirms the compositions of the two types of NPs. Four different types of photocatalytic papers with a size of 10 × 10 cm2 are prepared and used to degrade a 10-μM and 100-mL rhodamine B solution. The paper with Cu2O and Ag NP-co-decorated ZnO NRs has the best efficiency with first-order kinetic constants of 0.017 and 0.041 min-1 under the illumination of a halogen lamp and direct sunlight, respectively. The performance of the photocatalytic paper compares well with other substrate-supported ZnO nanocomposite photocatalysts. With the advantages of flexibility, light weight, nontoxicity, low cost, and ease of fabrication, the photocatalytic paper has good potential for visible light photocatalysis.
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Affiliation(s)
- Cheng-En Tsai
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013 Taiwan
| | - Shang-Ming Yeh
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013 Taiwan
| | - Chien-Hua Chen
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013 Taiwan
| | - Heh-Nan Lin
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013 Taiwan
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28
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Cai J, Huang J, Wang S, Iocozzia J, Sun Z, Sun J, Yang Y, Lai Y, Lin Z. Crafting Mussel-Inspired Metal Nanoparticle-Decorated Ultrathin Graphitic Carbon Nitride for the Degradation of Chemical Pollutants and Production of Chemical Resources. Adv Mater 2019; 31:e1806314. [PMID: 30697837 DOI: 10.1002/adma.201806314] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 01/13/2019] [Indexed: 06/09/2023]
Abstract
The development of efficient photocatalysts for the degradation of organic pollutants and production of hydrogen peroxide (H2 O2 ) is an attractive two-in-one strategy to address environmental remediation concerns and chemical resource demands. Graphitic carbon nitride (g-C3 N4 ) possesses unique electronic and optical properties. However, bulk g-C3 N4 suffers from inefficient sunlight absorption and low carrier mobility. Once exfoliated, ultrathin nanosheets of g-C3 N4 attain much intriguing photocatalytic activity. Herein, a mussel-inspired strategy is developed to yield silver-decorated ultrathin g-C3 N4 nanosheets (Ag@U-g-C3 N4 -NS). The optimum Ag@U-g-C3 N4 -NS photocatalyst exhibits enhanced electrochemical properties and excellent performance for the degradation of organic pollutants. Due to the photoformed valence band holes and selective two-electron reduction of O2 by the conduction band electrons, it also renders an efficient, economic, and green route to light-driven H2 O2 production with an initial rate of 0.75 × 10-6 m min-1 . The improved photocatalytic performance is primarily attributed to the large specific surface area of the U-g-C3 N4 -NS layer, the surface plasmon resonance effect induced by Ag nanoparticles, and the cooperative electronic capture properties between Ag and U-g-C3 N4 -NS. Consequently, this unique photocatalyst possesses the extended absorption region, which effectively suppresses the recombination of electron-hole pairs and facilitates the transfer of electrons to participate in photocatalytic reactions.
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Affiliation(s)
- Jingsheng Cai
- National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P. R. China
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Key Laboratory of Advanced Carbon Materials and Wearable Energy, Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, P. R. China
| | - Jianying Huang
- National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Shanchi Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, P. R. China
| | - James Iocozzia
- School of Materials Science and Engineering Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Zhongti Sun
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Key Laboratory of Advanced Carbon Materials and Wearable Energy, Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, P. R. China
| | - Jingyu Sun
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Key Laboratory of Advanced Carbon Materials and Wearable Energy, Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, P. R. China
| | - Yingkui Yang
- School of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan, 430074, P. R. China
| | - Yuekun Lai
- National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P. R. China
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, P. R. China
| | - Zhiqun Lin
- School of Materials Science and Engineering Georgia Institute of Technology, Atlanta, GA, 30332, USA
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Huang L, Wu C, Xie L, Yuan X, Wei X, Huang Q, Chen Y, Lu Y. Silver-Nanocellulose Composite Used as SERS Substrate for Detecting Carbendazim. Nanomaterials (Basel) 2019; 9:nano9030355. [PMID: 30836610 PMCID: PMC6474145 DOI: 10.3390/nano9030355] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 02/02/2019] [Accepted: 02/27/2019] [Indexed: 11/16/2022]
Abstract
Nanocellulose is an abundant green resource that, owing to the larger surface area, length, and diameter of the fibers, can be used as a framework for loading Ag nanoparticles and serve as substrate for surface enhancement Raman scattering (SERS). These properties would cause the hydroxyl groups on the surface to adsorb the Ag ions and reduce them to Ag seed to form a load fulcrum. This paper presents a convenient and environmentally friendly method for the fabrication of silver-nanocellulose composites (NCF-Ag). A commonly used pesticide, carbendazim (CBZ), was used as a SERS probe to evaluate the properties of NCF-Ag. The results showed that NCF-Ag possesses good homogeneity, reproducibility, and stability. Additionally, CBZ was found to have a low limit of detection (LOD), i.e., 1.0 × 10−8 M, which indicates the possibility for trace analysis. Furthermore, it presents good linearity with R2 = 0.98 at 1007 and 1270 cm−1 in the range from 10−4~10−7 M CBZ.
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Affiliation(s)
- Luqiang Huang
- College of Life Sciences, The Public Service Platform for Industrialization Development Technology of Marine Biological Medicine and Product of State Oceanic Administration, Southern Institute of Oceanography, Fujian Normal University, Fuzhou 350117, China.
| | - Changji Wu
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007, China.
| | - Lijuan Xie
- College of Life Sciences, The Public Service Platform for Industrialization Development Technology of Marine Biological Medicine and Product of State Oceanic Administration, Southern Institute of Oceanography, Fujian Normal University, Fuzhou 350117, China.
| | - Xue Yuan
- College of Life Sciences, The Public Service Platform for Industrialization Development Technology of Marine Biological Medicine and Product of State Oceanic Administration, Southern Institute of Oceanography, Fujian Normal University, Fuzhou 350117, China.
| | - Xinyu Wei
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007, China.
| | - Qun Huang
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, Fuzhou 350002, China.
| | - Youqiang Chen
- College of Life Sciences, The Public Service Platform for Industrialization Development Technology of Marine Biological Medicine and Product of State Oceanic Administration, Southern Institute of Oceanography, Fujian Normal University, Fuzhou 350117, China.
| | - Yudong Lu
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007, China.
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Hou Z, Yu Y, Wang W, Zhao X, Di Q, Chen Q, Chen W, Liu Y, Quan Z. Lithiophilic Ag Nanoparticle Layer on Cu Current Collector toward Stable Li Metal Anode. ACS Appl Mater Interfaces 2019; 11:8148-8154. [PMID: 30707016 DOI: 10.1021/acsami.9b01521] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Intractable hurdles of low Coulombic efficiency and dendritic Li formation during a repeated deposition/stripping process hinder the commercial use of Li metal anode for next-generation battery systems. Achieving uniform Li nucleation is one of the effective strategies to address these issues, and it is of practical importance to realize this on a commercial Cu current collector that is lithiophobic. Herein, we design a nanostructured Ag lithiophilic layer on a Cu foil via an electroless plating process for a Li metal current collector. The deposition of lithiophilic Ag particles that are homogeneously distributed on the Cu foil can reduce the nucleation overpotential, realizing uniform Li nucleation and subsequently flat Li plating. As a result, a stable cycle stability of up to 360 h (1 mA cm-2) and an average Columbic efficiency of 94.5% for 100 cycles (1 mA cm-2) are achieved. Furthermore, CuAg full cells with LiFePO4 as a cathode exhibit good cycle performances and low polarization voltage. This approach provides another facile way for a stable lithium metal anode.
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Affiliation(s)
- Zhen Hou
- School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. China
- Department of Chemistry , Southern University of Science and Technology (SUSTech) , Shenzhen , Guangdong 518055 , P. R. China
| | - Yikang Yu
- Department of Chemistry , Southern University of Science and Technology (SUSTech) , Shenzhen , Guangdong 518055 , P. R. China
| | - Wenhui Wang
- Department of Chemistry , Southern University of Science and Technology (SUSTech) , Shenzhen , Guangdong 518055 , P. R. China
| | - Xixia Zhao
- Department of Chemistry , Southern University of Science and Technology (SUSTech) , Shenzhen , Guangdong 518055 , P. R. China
| | - Qian Di
- Department of Chemistry , Southern University of Science and Technology (SUSTech) , Shenzhen , Guangdong 518055 , P. R. China
| | - Qianwen Chen
- School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. China
- Department of Chemistry , Southern University of Science and Technology (SUSTech) , Shenzhen , Guangdong 518055 , P. R. China
| | - Wen Chen
- School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. China
- Department of Chemistry , Southern University of Science and Technology (SUSTech) , Shenzhen , Guangdong 518055 , P. R. China
| | - Yulian Liu
- Department of Chemistry , Southern University of Science and Technology (SUSTech) , Shenzhen , Guangdong 518055 , P. R. China
| | - Zewei Quan
- Department of Chemistry , Southern University of Science and Technology (SUSTech) , Shenzhen , Guangdong 518055 , P. R. China
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Zhao P, Li HX, Li DW, Hou YJ, Mao L, Yang M, Wang Y. A SERS nano-tag-based magnetic-separation strategy for highly sensitive immunoassay in unprocessed whole blood. Talanta 2019; 198:527-33. [PMID: 30876595 DOI: 10.1016/j.talanta.2019.02.040] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 12/27/2018] [Accepted: 02/08/2019] [Indexed: 01/25/2023]
Abstract
Assay technologies capable of detecting biomarker concentrations in unprocessed whole blood samples are fundamental for applications in medical diagnostics. SERS nano-tags integrated magnetic-separation biosensor (MSB) was realized for the first time for immunoassay in whole blood. The reliability and sensitivity of this method rely, in a large extent, on the quality and properties of the SERS nano-tags. The constructed silicacoated Ag SERS nano-tags as labels were used in a rapid and specific MSB immune sensor to detect Matrix Metalloproteinases 9 (MMP-9) in unprocessed blood samples. With fast screening ability and outstanding sensitivity, we anticipate that this method would greatly promote practical application of stroke-based early-stage cancer diagnosis.
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Liang L, Tang H, Deng Z, Liu Y, Chen X, Wang H. Ag nanoparticles inhibit the growth of the bryophyte, Physcomitrella patens. Ecotoxicol Environ Saf 2018; 164:739-748. [PMID: 30122261 DOI: 10.1016/j.ecoenv.2018.08.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 08/03/2018] [Accepted: 08/06/2018] [Indexed: 06/08/2023]
Abstract
The wide use of Ag nanoparticles (Ag NPs) as antimicrobial agents has resulted in a massive release of Ag NPs into environment, such as water and soil. As bryophytes live ubiquitously in water and soil, their tolerance and response to Ag NPs could be employed as an indicator for the harm of Ag NPs to the environment. Herein, we report the study on the physiological and biochemical responses of bryophytes to Ag NPs with different surface coatings at the gametophyte stages: protonema and leafy gametophyte, by using Physcomitrella patens as a model system. We found that Ag NPs, including AgNPs-B (Ag NPs without surface coating), AgNPs-PVP (Ag NPs coated with poly (N-vinyl-2-pyrrolidone)) and AgNPs-Cit (Ag NPs coated with citrate), were toxic to P. patens in terms of growth and development of the gametophyte. The toxicity was closely related to the concentration and surface coating of Ag NPs, and the growth stage of P. patens. The protonema was more sensitive to Ag NPs than the leafy gametophyte. Ag NPs inhibited the growth of the protonema following the trend of AgNPs-B > AgNPs-Cit > AgNPs-PVP. Ag NPs changed the thylakoid and chlorophyll contents, but did not affect the contents of essential elements in the protonema. At the leafy gametophyte stage, Ag NPs inhibited the growth of P. patens following a different order: AgNPs-Cit > AgNPs-B ≈ AgNPs-PVP. Ag NPs decreased the chlorophyll b content and disturbed the balance of some important essential elements in the leafy gametophytes. Both the dissolved fraction of Ag NPs and Ag NPs per se contributed to the toxicity. This study for the first time reveals the effects of Ag NPs on bryophytes at different growth stages, which calls for more attention to the nanoecotoxicology of Ag NPs.
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Affiliation(s)
- Lin Liang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Huan Tang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
| | - Zhaoguo Deng
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Yuanfang Liu
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
| | - Xing Chen
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China.
| | - Haifang Wang
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China.
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33
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Kwon DK, Porte Y, Ko KY, Kim H, Myoung JM. High-Performance Flexible ZnO Nanorod UV/Gas Dual Sensors Using Ag Nanoparticle Templates. ACS Appl Mater Interfaces 2018; 10:31505-31514. [PMID: 30133251 DOI: 10.1021/acsami.8b13046] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Flexible zinc oxide (ZnO) nanorod (NR) ultraviolet (UV)/gas dual sensors using silver (Ag) nanoparticle (NP) templates were successfully fabricated on a polyimide substrate with nickel electrodes. Arrays of Ag NPs were used as a template for the growth of ZnO NRs, which could enhance the flexibility and the sensing properties of the devices through the localized surface plasmon resonance (LSPR) effect. The Ag NPs were fabricated by the rapid thermal annealing process of Ag thin films, and ZnO NRs were grown on Ag NPs to maximize the surface area and form networks with rod-to-rod contacts. Because of the LSPR effect by Ag NPs, the UV photoresponse of the ZnO NRs was amplified and the depletion region of ZnO NRs was formed quickly because of the Schottky contact with the Ag NPs. As a consequence, ZnO NR UV/gas dual sensors grown on the Ag NP template with a diameter of 28 nm exhibited the outstanding UV-sensing characteristics with a UV on-off ratio of 3628 and a rising time ( tr) and a decay time ( td) of 3.52 and 0.33 s upon UV exposure, along with excellent NO2-sensing characteristics with a stable gas on-off ratio of 288.5 and a tr and td of 38 and 62 s upon NO2 exposure. Furthermore, the sensors grown on the Ag NP template exhibited good mechanical flexibility and stable sensing properties without significant degradation even after the bending test up to 10 000 cycles at the bending radius of 5 mm.
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Ellis T, Chiappi M, García-Trenco A, Al-Ejji M, Sarkar S, Georgiou TK, Shaffer MSP, Tetley TD, Schwander S, Ryan MP, Porter AE. Multimetallic Microparticles Increase the Potency of Rifampicin against Intracellular Mycobacterium tuberculosis. ACS Nano 2018; 12:5228-5240. [PMID: 29767993 DOI: 10.1021/acsnano.7b08264] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Mycobacterium tuberculosis ( M.tb) has the extraordinary ability to adapt to the administration of antibiotics through the development of resistance mechanisms. By rapidly exporting drugs from within the cytosol, these pathogenic bacteria diminish antibiotic potency and drive the presentation of drug-tolerant tuberculosis (TB). The membrane integrity of M.tb is pivotal in retaining these drug-resistant traits. Silver (Ag) and zinc oxide (ZnO) nanoparticles (NPs) are established antimicrobial agents that effectively compromise membrane stability, giving rise to increased bacterial permeability to antibiotics. In this work, biodegradable multimetallic microparticles (MMPs), containing Ag NPs and ZnO NPs, were developed for use in pulmonary delivery of antituberculous drugs to the endosomal system of M.tb-infected macrophages. Efficient uptake of MMPs by M.tb-infected THP1 cells was demonstrated using an in vitro macrophage infection model, with direct interaction between MMPs and M.tb visualized with the use of electron FIB-SEM tomography. The release of Ag NPs and ZnO NPs within the macrophage endosomal system increased the potency of the model antibiotic rifampicin by as much as 76%, realized through an increase in membrane disorder of intracellular M.tb. MMPs were effective at independently driving membrane destruction of extracellular bacilli located at the exterior face of THP1 macrophages. This MMP system presents as an effective drug delivery vehicle that could be used for the transport of antituberculous drugs such as rifampicin to infected alveolar macrophages, while increasing drug potency. By increasing M.tb membrane permeability, such a system may prove effectual in improving treatment of drug-susceptible TB in addition to M.tb strains considered drug-resistant.
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Affiliation(s)
- Timothy Ellis
- Department of Materials and London Centre for Nanotechnology , Imperial College London , London SW7 2AZ , U.K
| | - Michele Chiappi
- National Heart & Lung Institute , Imperial College London , London SW7 2AZ , U.K
| | - Andrés García-Trenco
- Department of Chemistry and London Centre for Nanotechnology , Imperial College London , London SW7 2AZ , U.K
| | - Maryam Al-Ejji
- Department of Materials and London Centre for Nanotechnology , Imperial College London , London SW7 2AZ , U.K
| | - Srijata Sarkar
- Department of Environmental and Occupational Health , Rutgers School of Public Health , Piscataway , New Jersey 08854 , United States
| | - Theoni K Georgiou
- Department of Materials and London Centre for Nanotechnology , Imperial College London , London SW7 2AZ , U.K
| | - Milo S P Shaffer
- Department of Chemistry and London Centre for Nanotechnology , Imperial College London , London SW7 2AZ , U.K
| | - Teresa D Tetley
- National Heart & Lung Institute , Imperial College London , London SW7 2AZ , U.K
| | - Stephan Schwander
- Department of Environmental and Occupational Health , Rutgers School of Public Health , Piscataway , New Jersey 08854 , United States
- Office for Global Public Health Affairs , Rutgers School of Public Health , Piscataway , New Jersey 08854 , United States
| | - Mary P Ryan
- Department of Materials and London Centre for Nanotechnology , Imperial College London , London SW7 2AZ , U.K
| | - Alexandra E Porter
- Department of Materials and London Centre for Nanotechnology , Imperial College London , London SW7 2AZ , U.K
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35
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Abstract
We show that the growth of Ag nanoparticles (NPs) follows the areas of maximum plasmonic field in nanohole arrays (NAs). We thus obtain Ag NP rings not connected to the metallic rim of the nanoholes. The photocatalytic effect resulting from the enhanced E-field of NAs boosts the reaction and is responsible for the site selectivity. The strategy, using plasmonics to control a chemical reaction, can be expanded to organic reactions, for example, synthesis of polypyrrole. After the NA film is removed, ordered ring-shaped Ag NPs are easily obtained, inspiring a facile micropatterning method. Overall, the results reported in this work will contribute to the control of chemical reactions at the nanoscale and are promising to inspire a facile way to pursue patterned chemical reactions.
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Affiliation(s)
- Bin Ai
- State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P.R. China
- Department of Physics and Astronomy, University of Georgia , Athens, Georgia 30602, United States
| | - Zengyao Wang
- State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P.R. China
| | - Helmuth Möhwald
- Max Planck Institute of Colloids and Interfaces , D-14424 Potsdam, Germany
| | - Gang Zhang
- State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P.R. China
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Xie X, Mao C, Liu X, Zhang Y, Cui Z, Yang X, Yeung KWK, Pan H, Chu PK, Wu S. Synergistic Bacteria Killing through Photodynamic and Physical Actions of Graphene Oxide/Ag/Collagen Coating. ACS Appl Mater Interfaces 2017; 9:26417-26428. [PMID: 28715631 DOI: 10.1021/acsami.7b06702] [Citation(s) in RCA: 145] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Researchers have widely agreed that the broad spectrum antibacterial activity of silver nanoparticles (AgNPs) can be predominantly ascribed to the action of Ag+. This study marks the first report detailing the rapid and highly efficient synergistic bacteria killing of AgNPs, which is achieved by inspiring AgNPs' strong photocatalytic capability to rapidly produce radical oxygen species using 660 nm visible light together with the innate antimicrobial ability of Ag+. These AgNPs were uniformly distributed into well-defined graphene oxide (GO) nanosheets through an in situ reduction of Ag+ and subsequently wrapped with a thin layer of type I collagen. In vivo subcutaneous tests demonstrated that 20 min irradiation of 660 nm visible light could achieve a high antibacterial efficacy of 96.3% and 99.4% on the implant surface against Escherichia coli and Staphylococcus aureus, respectively. In addition, the collagen could reduce the coatings' possible cytotoxicity. The results of this work can provide a highly effective and universal GO-based bioplatform for combination with inorganic antimicrobial NPs (i.e., AgNPs) with excellent photocatalytic properties, which can be utilized for facile and rapid in situ disinfection, as well as long-term prevention of bacterial infection through the synergistic bacteria killing of both 660-nm light-inspired photodynamic action and their innate physical antimicrobial ability.
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Affiliation(s)
- Xianzhou Xie
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan 430062, China
| | - Congyang Mao
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan 430062, China
| | - Xiangmei Liu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan 430062, China
| | - Yanzhe Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan 430062, China
| | - Zhenduo Cui
- School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
| | - Xianjin Yang
- School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
| | - Kelvin W K Yeung
- Department of Orthopaedics & Traumatology, Li KaShing Faculty of Medicine, The University of Hong Kong , Pokfulam, Hong Kong 999077, China
| | - Haobo Pan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
| | - Paul K Chu
- Department of Physics & Materials Science, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong 999077, China
| | - Shuilin Wu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan 430062, China
- School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
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37
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Shanthil M, Fathima H, George Thomas K. Cost-Effective Plasmonic Platforms: Glass Capillaries Decorated with Ag@SiO 2 Nanoparticles on Inner Walls as SERS Substrates. ACS Appl Mater Interfaces 2017; 9:19470-19477. [PMID: 28248484 DOI: 10.1021/acsami.6b12478] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A cost-effective method for the fabrication of a glass capillary based plasmonic platform for the selective detection and identification of analytes of importance in health, environment, and safety is demonstrated. This was achieved by coating Ag@SiO2 nanoparticles (Ag ∼ 60 nm) having silica shell of varying thickness (∼2 and ∼25 nm) on the inside walls of glass capillaries, over 2 cm in length, with uniform coverage. It was found that the particle density on the surface plays a decisive role on the enhancement of Raman signals. Multiple hot spots, which are essentially junctions of amplified electric field, were generated when ∼30 Ag@SiO2 particles/μm2 were bound onto the walls of glass capillaries. The pores of the silica shell allow the localization of analyte molecules to the vicinity of hot spots resulting in signal enhancements of the order of 1010 (using pyrene as analyte; excitation wavelength, 632.8 nm). The applicability of Ag@SiO2 coated capillaries for the detection of a wide range of molecules has been explored, by taking representative examples of polyaromatic hydrocarbons (pyrene), amino acids (tryptophan), proteins (bovine serum albumin), and explosives (trinitrotoluene). By increasing the thickness of the silica shell of Ag@SiO2 nanoparticles, an effective filtration cum detection method has been developed for the selective identification of small molecules such as amino acids, without the interference of large proteins.
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Affiliation(s)
- M Shanthil
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM) , CET Campus, Thiruvananthapuram 695 016, India
- Photosciences and Photonics, CSIR-National Institute for Interdisciplinary Science and Technology , Thiruvananthapuram 695 019, India
| | - Hemna Fathima
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM) , CET Campus, Thiruvananthapuram 695 016, India
| | - K George Thomas
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM) , CET Campus, Thiruvananthapuram 695 016, India
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Song DH, Kim HS, Suh JS, Jun BH, Rho WY. Multi-Shaped Ag Nanoparticles in the Plasmonic Layer of Dye-Sensitized Solar Cells for Increased Power Conversion Efficiency. Nanomaterials (Basel) 2017; 7:nano7060136. [PMID: 28587217 PMCID: PMC5485783 DOI: 10.3390/nano7060136] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 05/30/2017] [Accepted: 06/02/2017] [Indexed: 11/29/2022]
Abstract
The use of dye-sensitized solar cells (DSSCs) is widespread owing to their high power conversion efficiency (PCE) and low cost of manufacturing. We prepared multi-shaped Ag nanoparticles (NPs) and introduced them into DSSCs to further enhance their PCE. The maximum absorption wavelength of the multi-shaped Ag NPs is 420 nm, including the shoulder with a full width at half maximum (FWHM) of 121 nm. This is a broad absorption wavelength compared to spherical Ag NPs, which have a maximum absorption wavelength of 400 nm without the shoulder of 61 nm FWHM. Therefore, when multi-shaped Ag NPs with a broader plasmon-enhanced absorption were coated on a mesoporous TiO2 layer on a layer-by-layer structure in DSSCs, the PCE increased from 8.44% to 10.22%, equivalent to an improvement of 21.09% compared to DSSCs without a plasmonic layer. To confirm the plasmon-enhanced effect on the composite film structure in DSSCs, the PCE of DSSCs based on the composite film structure with multi-shaped Ag NPs increased from 8.58% to 10.34%, equivalent to an improvement of 20.51% compared to DSSCs without a plasmonic layer. This concept can be applied to perovskite solar cells, hybrid solar cells, and other solar cells devices.
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Affiliation(s)
- Da Hyun Song
- Department of Chemistry, Seoul National University, Seoul 151-747, Korea.
| | - Ho-Sub Kim
- Department of Chemistry, Seoul National University, Seoul 151-747, Korea.
| | - Jung Sang Suh
- Department of Chemistry, Seoul National University, Seoul 151-747, Korea.
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Won-Yeop Rho
- Department of Chemistry, Seoul National University, Seoul 151-747, Korea.
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
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39
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Kim I, Woo K, Zhong Z, Lee E, Kang D, Jeong S, Choi YM, Jang Y, Kwon S, Moon J. Selective Light-Induced Patterning of Carbon Nanotube/Silver Nanoparticle Composite To Produce Extremely Flexible Conductive Electrodes. ACS Appl Mater Interfaces 2017; 9:6163-6170. [PMID: 28146354 DOI: 10.1021/acsami.6b14580] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Recently, highly flexible conductive features have been widely demanded for the development of various electronic applications, such as foldable displays, deformable lighting, disposable sensors, and flexible batteries. Herein, we report for the first time a selective photonic sintering-derived, highly reliable patterning approach for creating extremely flexible carbon nanotube (CNT)/silver nanoparticle (Ag NP) composite electrodes that can tolerate severe bending (20 000 cycles at a bending radius of 1 mm). The incorporation of CNTs into a Ag NP film can enhance not only the mechanical stability of electrodes but also the photonic-sintering efficiency when the composite is irradiated by intense pulsed light (IPL). Composite electrodes were patterned on various plastic substrates by a three-step process comprising coating, selective IPL irradiation, and wiping. A composite film selectively exposed to IPL could not be easily wiped from the substrate, because interfusion induced strong adhesion to the underlying polymer substrate. In contrast, a nonirradiated film adhered weakly to the substrate and was easily removed, enabling highly flexible patterned electrodes. The potential of our flexible electrode patterns was clearly demonstrated by fabricating a light-emitting diode circuit and a flexible transparent heater with unimpaired functionality under bending, rolling, and folding.
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Affiliation(s)
- Inhyuk Kim
- Department of Materials Science and Engineering, Yonsei University , Seoul 120-749, Republic of Korea
| | - Kyoohee Woo
- Advanced Manufacturing Systems Research Division, Korea Institute of Machinery and Materials , Daejeon 34103, Republic of Korea
| | - Zhaoyang Zhong
- Department of Materials Science and Engineering, Yonsei University , Seoul 120-749, Republic of Korea
- Advanced Manufacturing Systems Research Division, Korea Institute of Machinery and Materials , Daejeon 34103, Republic of Korea
| | - Eonseok Lee
- Advanced Manufacturing Systems Research Division, Korea Institute of Machinery and Materials , Daejeon 34103, Republic of Korea
| | - Dongwoo Kang
- Advanced Manufacturing Systems Research Division, Korea Institute of Machinery and Materials , Daejeon 34103, Republic of Korea
| | - Sunho Jeong
- Division of Advanced Materials, Korea Research Institute of Chemical Technology , Daejeon 305-600, Republic of Korea
| | - Young-Man Choi
- Department of Mechanical Engineering, Ajou University , Suwon-si, Gyeonggi-do 16490, Republic of Korea
| | - Yunseok Jang
- Advanced Manufacturing Systems Research Division, Korea Institute of Machinery and Materials , Daejeon 34103, Republic of Korea
| | - Sin Kwon
- Advanced Manufacturing Systems Research Division, Korea Institute of Machinery and Materials , Daejeon 34103, Republic of Korea
| | - Jooho Moon
- Department of Materials Science and Engineering, Yonsei University , Seoul 120-749, Republic of Korea
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40
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Abstract
We report the first attempt of using graphene quantum dot-Ag nanoparticles (GQD/AgNP hybrids) as oxidase mimics and antibacterial agents. Unlike previous silver- and graphene-based materials, the GQD/AgNP hybrids exhibit a high oxidase-like catalytic activity and possess favorable stability in neutral medium within the range from room temperature to 60 °C. In accordance with their prominent enzyme activities, the GQD/AgNP hybrids show excellent antibacterial properties against Gram-negative and Gram-positive bacteria as well as drug resistant bacteria, with an ultralow minimal inhibitory concentration (2-4 μg/mL) against 1 × 107 to 1 × 108 μg/mL Escherichia coli and Staphylococcus aureus. In the presence of the GQD/AgNP hybrids, the fluorescence behavior after the introduction of 2', 7'-dichlorofluorescin diacetate demonstrated a possible role of reactive oxidative species in the GQD/AgNP hybrid-mediated antibacterial therapeutic effect. Furthermore, TEM and SEM imaging identified concomitant disruption of the bacterial cell membrane and loss of barrier function during the sterilization process. Therefore, the GQD/AgNP hybrids exhibit vast potentials for serving as highly effective, broad-spectrum antibacterial agent for sterilization use without the need of additional stimulation by laser irradiation (photosensitization) or the provision of H2O2, facilitating their relative ease of use and cost-effectiveness.
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Affiliation(s)
- Shuai Chen
- College of Life and Health Sciences, Northeastern University, No. 195, Chuangxin Road, Hunnan District, Shenyang 110169, China.,Research Center for Analytical Sciences, College of Sciences, Northeastern University, No. 3-11, Wenhua Road, Heping District, Shenyang 110819, China
| | - Yue Quan
- Research Center for Analytical Sciences, College of Sciences, Northeastern University, No. 3-11, Wenhua Road, Heping District, Shenyang 110819, China
| | - Yong-Liang Yu
- Research Center for Analytical Sciences, College of Sciences, Northeastern University, No. 3-11, Wenhua Road, Heping District, Shenyang 110819, China
| | - Jian-Hua Wang
- Research Center for Analytical Sciences, College of Sciences, Northeastern University, No. 3-11, Wenhua Road, Heping District, Shenyang 110819, China
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Yang X, Li H, Zhang W, Sun M, Li L, Xu N, Wu J, Sun J. High Visible Photoelectrochemical Activity of Ag Nanoparticle-Sandwiched CdS/Ag/ZnO Nanorods. ACS Appl Mater Interfaces 2017; 9:658-667. [PMID: 27982560 DOI: 10.1021/acsami.6b12259] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report on the sensitizing of CdS-coated ZnO (CdS/ZnO) nanorods (NRs) by Ag nanoparticles (NPs) embedded between the CdS coating and the ZnO nanorod and the improved optical and photoelectrochemical properties of the Ag NP-sandwiched nanostructure CdS/Ag/ZnO NRs. The CdS/Ag/ZnO NRs were fabricated by growing Ag NPs on hydrothermally grown ZnO NRs and subsequently depositing CdS coatings followed by subsequent N2 annealing. The structure of the fabricated CdS/Ag/ZnO NRs was characterized by field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Raman backscattering, revealing that the ZnO NRs and the CdS coatings are both structured with hexagonal wurtzite and the Ag NPs contact well with ZnO and CdS. Optical properties were evaluated by measuring optical absorption and photoluminescence, showing that the Ag NPs behave well as sensitizers for optical property improvement and the CdS/Ag/ZnO NRs exhibit better photoresponse in a wide spectral region than CdS/ZnO because of plasmon-enhanced absorption due to the embedment of Ag NPs. The Ag NPs also serve as electron relays from CdS to ZnO, facilitating electron transfer from the CdS coatings to the ZnO NRs. The excellent photoresponse and efficient electron transfer make the CdS/Ag/ZnO NRs highly photoelectrochemically active. The CdS/Ag/ZnO NRs fabricated on indium-tin oxide present much better photoelectrochemical performance as photoanodes working in the visible region than CdS/ZnO NRs without Ag NPs. Under visible illumination, a maximum optical-to-chemical conversion efficiency of 3.13% is obtained for CdS/Ag/ZnO NR photoanodes against 1.35% for CdS/ZnO NR photoanodes.
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Affiliation(s)
- Xu Yang
- Department of Optical Science and Engineering, and Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Fudan University , Shanghai 200433, China
| | - Hui Li
- Department of Optical Science and Engineering, and Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Fudan University , Shanghai 200433, China
| | - Wu Zhang
- Department of Optical Science and Engineering, and Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Fudan University , Shanghai 200433, China
| | - Mingxuan Sun
- School of Materials Engineering, Shanghai University of Engineering Science , Shanghai 201620, China
| | - Lequn Li
- Department of Optical Science and Engineering, and Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Fudan University , Shanghai 200433, China
| | - Ning Xu
- Department of Optical Science and Engineering, and Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Fudan University , Shanghai 200433, China
| | - Jiada Wu
- Department of Optical Science and Engineering, and Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Fudan University , Shanghai 200433, China
| | - Jian Sun
- Department of Optical Science and Engineering, and Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Fudan University , Shanghai 200433, China
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Khan N, Bano A. Modulation of phytoremediation and plant growth by the treatment with PGPR, Ag nanoparticle and untreated municipal wastewater. Int J Phytoremediation 2016; 18:1258-69. [PMID: 27348506 DOI: 10.1080/15226514.2016.1203287] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The present attempt was made to determine the effects of untreated municipal wastewater (MW) on growth and physiology of maize and to evaluate the role of Ag nanoparticle and plant-growth-promoting rhizobacteria (PGPR) when interacting with MW used for irrigation. It was used for the isolation of PGPR. The isolates were identified and characterized based on the colony morphology, C/N source utilization pattern using miniaturized identification system (QTS 24), catalase (CAT) and oxidase tests, and 16S rRNA sequence analyses. The three PGPR isolates were Planomicrobium chinense (accession no. NR042259), Bacillus cereus (accession no. CP003187) and Pseudomonas fluorescens (accession no. GU198110). The isolates solubilized phosphate and exhibited antibacterial activities against pathogenic bacteria i.e., Staphylococcus aureus, Pseudomonas aeruginosa, Bacillus subtilis, Klebsiella pneumoniae and Escherichia coli and antifungal activities against Helminthosporium sativum and Fusarium solani. The untreated MW irrigation as well as Ag nanoparticle treatment resulted in significant accumulation of Ni in the rhizosphere soil. PGPR induced accumulation of Ni and Pb in the rhizosphere soil and maize shoot. Ag nanoparticle also caused Ni and Pb accumulation in maize shoot. Combined treatment with PGPR, Ag nanoparticle and MW resulted in decreased accumulation of Pb and Ni both in the rhizosphere soil and maize shoot. Combined treatment of Ag nanoparticle, MW and PGPR decreased Na accumulation and increased K accumulation. Ag nanoparticle increased Fe and Co accumulation but decreased Zn and Cu accumulation in MW treatment; in combined treatment, it reduced PGPR-induced accumulation of Co and Fe in the rhizosphere and Co accumulation in shoot. PGPR significantly increased root weight, shoot weight, root length, shoot length, leaf area, and proline, chlorophyll and carotenoid content of the maize plant. Ag nanoparticle also enhanced the leaf area, fresh weight, root length and antioxidant activities of maize. Treatment with Ag nanoparticle increased the gibberellic acid (GA) and abscisic acid (ABA) content of maize leaves but decreased the accumulation of GA in the presence of PGPR and MW.
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Affiliation(s)
- Naeem Khan
- a Phytohormone lab, Department of Plant Sciences, Quaid-i-Azam University , Islamabad , Pakistan
| | - Asghari Bano
- a Phytohormone lab, Department of Plant Sciences, Quaid-i-Azam University , Islamabad , Pakistan
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Şevik Eliçora S, Erdem D, Dinç AE, Altunordu Kalaycı Ö, Hazer B, Yurdakan G, Külah C. Effects of polymer-based, silver nanoparticle-coated silicone splints on the nasal mucosa of rats. Eur Arch Otorhinolaryngol 2017; 274:1535-41. [PMID: 27864671 DOI: 10.1007/s00405-016-4394-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 11/15/2016] [Indexed: 10/20/2022]
Abstract
Infection is a serious complication after nasal packing that otolaryngologists seek to avoid. The aim of this study is to investigate the use of silver (Ag) nanoparticle, which serves as antimicrobial agents, with nasal tampons. The study design is an experimental animal model and the setting is tertiary referral center. Twenty-four rats were randomized into the following four groups: (1) control group (n = 6); (2) silicone nasal splint (SNS) group (n = 6); (3) polypropylene-grafted polyethylene glycol (PP-g-PEG) amphiphilic graft copolymer-coated SNS group (n = 6); and (4) Ag nanoparticle-embedded PP-g-PEG (Ag-PP-g-PEG) amphiphilic graft copolymer-coated SNS group (n = 6). These tampons were applied to rats for 48 h, after which they were removed in a sterile manner, and the rats were sacrificed. The nasal septa of the rats were excised, and assessments of tissue changes in the nasal mucosa were compared among the groups. The removed tampons were microbiologically examined, and quantitative analyses were made. When the groups were compared microbiologically, there were no significant differences in bacterial colonization rates of coagulase-negative Staphylococcus spp. among the three groups (p = 0.519), but there was a statistically significant difference among bacterial colonization rates of Heamophilus parainfluenzae and Corynebacterium spp. (p = 0.018, p = 0.004). We found that H. parainfluenzae grew less robustly in the Ag-PP-g-PEG than the PP-g-PEG group (p = 0.017). However, we found no significant difference between the Ag-PP-g-PEG and SNS groups, or between the SNS and PP-g-PEG groups. The growth of Corynebacterium spp. did not differ significantly between the Ag-PP-g-PEG and SNS groups (p = 1.000). When Group 4 was compared with Group 2, the former showed less inflammation. Compared with other tampons, Ag-PP-g-PEG amphiphilic graft copolymer-coated silicone nasal tampons caused less microbiological colonization and inflammation. Therefore, the use of these tampons may prevent secondary infections and reduce the risk of developing complications by minimizing tissue damage.
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Xu Z, Li M, Li X, Liu X, Ma F, Wu S, Yeung KWK, Han Y, Chu PK. Antibacterial Activity of Silver Doped Titanate Nanowires on Ti Implants. ACS Appl Mater Interfaces 2016; 8:16584-16594. [PMID: 27336202 DOI: 10.1021/acsami.6b04161] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A nanostructured film composed of one-dimensional titanate nanowires (TNWs) was employed as a carrier of Ag nanoparticles and chitosan (CS) to improve the surface antibacterial activity and biocompatibility of titanium implants. A TNWs film was produced on a Ti substrate by an alkali hydrothermal reaction and subsequently doped by Ag nanoparticles through an ultraviolet light chemical reduction. The CS nanofilm was deposited on the Ag nanoparticles through a spin-assisted layer by layer assembly method. The results disclosed that Ag nanoparticles were successfully carried by TNWs and homogeneously distributed on the entire surface. Moreover, a CS nanofilm was also successfully deposited on the Ag nanoparticles. Antibacterial tests showed that the samples modified with a higher initial concentration of AgNO3 solution exhibited better antibacterial activity, and that a CS nanofilm could further improve the antibacterial activity of the TNWs. Cell viability and ALP tests revealed that the release of Ag(+) was detrimental for the growth, proliferation, and differentiation of MC3T3, and that CS could lower the negative effects of Ag gradually as the incubation time increased.
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Affiliation(s)
- Ziqiang Xu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan, 430062, China
| | - Man Li
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan, 430062, China
| | - Xia Li
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan, 430062, China
| | - Xiangmei Liu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan, 430062, China
| | - Fei Ma
- State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University , Xi'an, Shaanxi, 710049, China
| | - Shuilin Wu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan, 430062, China
| | - K W K Yeung
- Division of Spine Surgery, Department of Orthopaedics & Traumatology, Li KaShing Faculty of Medicine, The University of Hong Kong , Hong Kong, 999077, China
| | - Yong Han
- State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University , Xi'an, Shaanxi, 710049, China
| | - Paul K Chu
- Department of Physics & Materials Science, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
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Chen N, Song ZM, Tang H, Xi WS, Cao A, Liu Y, Wang H. Toxicological Effects of Caco-2 Cells Following Short-Term and Long-Term Exposure to Ag Nanoparticles. Int J Mol Sci 2016; 17:E974. [PMID: 27338357 DOI: 10.3390/ijms17060974] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 05/13/2016] [Accepted: 06/14/2016] [Indexed: 01/08/2023] Open
Abstract
Extensive utilization increases the exposure of humans to Ag nanoparticles (NPs) via the oral pathway. To comprehensively address the action of Ag NPs to the gastrointestinal systems in real situations, i.e., the long-term low-dose exposure, we evaluated and compared the toxicity of three Ag NPs (20–30 nm with different surface coatings) to the human intestine cell Caco-2 after 1-day and 21-day exposures, using various biological assays. In both the short- and long-term exposures, the variety of surface coating predominated the toxicity of Ag NPs in a descending order of citrate-coated Ag NP (Ag-CIT), bare Ag NP (Ag-B), and poly (N-vinyl-2-pyrrolidone)-coated Ag NP (Ag-PVP). The short-term exposure induced cell growth inhibition and death. The cell viability loss appeared after cells were exposed to 0.7 μg/mL Ag-CIT, 0.9 μg/mL Ag-B or >1.0 μg/mL Ag-PVP for 24 h. The short-term and higher-dose exposure also induced reactive oxygen species (ROS) generation, mitochondrial damage, cell membrane leakage, apoptosis, and inflammation (IL-8 level). The long-term exposure only inhibited the cell proliferation. After 21-day exposure to 0.4 μg/mL Ag-CIT, the cell viability dropped to less than 50%, while cells exposed to 0.5 μg/mL Ag-PVP remained normal as the control. Generally, 0.3 μg/mL is the non-toxic dose for the long-term exposure of Caco-2 cells to Ag NPs in this study. However, cells presented inflammation after exposure to Ag NPs with the non-toxic dose in the long-term exposure.
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Jiang D, Du X, Chen D, Zhou L, Chen W, Li Y, Hao N, Qian J, Liu Q, Wang K. One-pot hydrothermal route to fabricate nitrogen doped graphene/Ag-TiO2: Efficient charge separation, and high-performance "on-off-on" switch system based photoelectrochemical biosensing. Biosens Bioelectron 2016; 83:149-55. [PMID: 27108257 DOI: 10.1016/j.bios.2016.04.042] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 03/23/2016] [Accepted: 04/14/2016] [Indexed: 11/16/2022]
Abstract
Charge separation is crucial for increasing the performances of semiconductor-based materials in many photoactive applications. In this paper, we designed novel nanocomposites consisting of TiO2 nanocrystals, Ag nanoparticles (NPs) and nitrogen doped graphene (NGR) via a facile one-pot hydrothermal route. The as-prepared ternary nanocomposites exhibited enhanced photoelectrochemical (PEC) performances owing to the introduction of Ag NPs and NGR, which increase the excitons' lifetime and improve the charge transfer. In particular, it is shown by means of the transient-state surface photocurrent responses that the photocurrent intensity of the as-fabricated composites exhibited 18.2 times higher than that of pristine TiO2. Based on the robust photocurrent signal, a new kind of "on-off-on" PEC aptasensor was established with the assistance of Pb(2+) aptamer, which integrates the advantages of low background signal and high sensitivity. Under optimal conditions, a wide linear response for Pb(2+) detection was obtained from 1pM to 5nM as well as a detection limit down to 0.3pM. With its simplicity, selectivity, and sensitivity, this proposed strategy shows great promise for Pb(2+) detection in food and environment analysis.
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Affiliation(s)
- Ding Jiang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xiaojiao Du
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Danyang Chen
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Lei Zhou
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Wei Chen
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Yaqi Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Nan Hao
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Jing Qian
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Qian Liu
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Kun Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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Browning LM, Lee KJ, Cherukuri PK, Nallathamby PD, Warren S, Jault JM, Xu XHN. Single Nanoparticle Plasmonic Spectroscopy for Study of the Efflux Function of Multidrug ABC Membrane Transporters of Single Live Cells. RSC Adv 2016; 6:36794-36802. [PMID: 27570617 DOI: 10.1039/c6ra05895g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
ATP-binding cassette (ABC) membrane transporters exist in all living organisms and play key roles in a wide range of cellular and physiological functions. The ABC transporters can selectively extrude a wide variety of structurally and functionally unrelated substrates, leading to multidrug resistance. Despite extensive study, their efflux molecular mechanisms remain elusive. In this study, we synthesized and characterized purified silver nanoparticles (Ag NPs) (97 ± 13 nm in diameter), and used them as photostable optical imaging probes to study efflux kinetics of ABC membrane transporters (BmrA) of single live cells (B. subtillis). The NPs with concentrations up to 3.7 pM were stable (non-aggregated) in a PBS buffer and biocompatible with the cells. We found a high dependence of accumulation of the intracellular NPs in single live cells (WT, Ct-BmrA-EGFP, ΔbmrA) upon the cellular expression level of BmrA and NP concentration (0.93, 1.85 and 3.7 pM), showing the highest accumulation of intracellular NPs in ΔbmrA (deletion of BmrA) and the lowest ones in Ct-BmrA-EGFP (over-expression of BmrA). Interestingly, the accumulation of intracellular NPs in ΔbmrA increases nearly proportionally with the NP concentration, while those in WT and Ct-BrmA-EGFP do not. This suggests that the NPs enter the cells via passive diffusion driven by concentration gradients and are extruded out of cells by BmrA transporters, similar to conventional pump substrates (antibiotics). This study shows that such large substrates (84-100 nm NPs) can enter into the live cells and be extruded out of the cells by BmrA, and the NPs can serve as nm-sized optical imaging probes to study the size-dependent efflux kinetics of membrane transporters in single live cells in real time.
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Affiliation(s)
- Lauren M Browning
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA 23529, USA
| | - Kerry J Lee
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA 23529, USA
| | - Pavan K Cherukuri
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA 23529, USA
| | - Prakash D Nallathamby
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA 23529, USA
| | - Seth Warren
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA 23529, USA
| | - Jean-Michel Jault
- UMR5086 CNRS/UCBLyon I, MMSB-IBCP, 7 Passage du Vercors 69367 Lyon cedex 07, France
| | - Xiao-Hong Nancy Xu
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA 23529, USA
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Jeong HY, Lee SY, Ly TH, Han GH, Kim H, Nam H, Jiong Z, Shin BG, Yun SJ, Kim J, Kim UJ, Hwang S, Lee YH. Visualizing Point Defects in Transition-Metal Dichalcogenides Using Optical Microscopy. ACS Nano 2016; 10:770-777. [PMID: 26645092 DOI: 10.1021/acsnano.5b05854] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
While transmission electron microscopy and scanning tunneling microscopy reveal atomic structures of point defect and grain boundary in monolayer transition-metal dichalcogenides (TMDs), information on point defect distribution in macroscale is still not available. Herein, we visualize the point defect distribution of monolayer TMDs using dark-field optical microscopy. This was realized by anchoring silver nanoparticles on defect sites of MoS2 under light illumination. The optical images clearly revealed that the point defect distribution varies with light power and exposure time. The number of silver nanoparticles increased initially and reached a plateau in response to light power or exposure time. The size of silver nanoparticles was a few hundred nanometers in the plateau region as observed using optical microscopy. The measured defect density in macroscale was ∼2 × 10(10) cm(-2), slightly lower than the observed value (4 × 10(11) cm(-2)) from scanning tunneling microscopy.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Un Jeong Kim
- Device Laboratory, Samsung Advanced Institute of Technology , Suwon 449-712, Korea
| | - Sungwoo Hwang
- Device Laboratory, Samsung Advanced Institute of Technology , Suwon 449-712, Korea
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Jiang H, Zhang H, Fu Y, Guo S, Hu Y, Zhang L, Liu Y, Liu H, Li C. Self-Volatilization Approach to Mesoporous Carbon Nanotube/Silver Nanoparticle Hybrids: The Role of Silver in Boosting Li Ion Storage. ACS Nano 2016; 10:1648-1654. [PMID: 26691283 DOI: 10.1021/acsnano.5b07367] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
One of the biggest challenging issues of carbon nanomaterials for Li ion batteries (LIBs) is that they show low initial Coulombic efficiency (CE), leading to a limited specific capacity. Herein, we demonstrate a simple template self-volatilization strategy for in situ synthesis of mesoporous carbon nanotube/Ag nanoparticle (NP) hybrids (Ag-MCNTs) to boost the LIBs' performance. The key concept of Ag-MCNTs for enhancing LIBs is that a small trace of Ag NPs on MCNTS can greatly restrict the formation of a thicker solid electrolyte interphase film, which has been well verified by both transmission electron microscopy results and quantum density functional theory calculations, leading to the highest initial CE in all the reported carbon nanomaterials. This uncovered property of Ag NPs from Ag-MCNTs makes them exhibit a very high reversible capacity of 1637 mAh g(-1) after 400 discharge/charge cycles at 100 mA g(-1), approximately 5 times higher than the theoretical value of a graphite anode (372 mAh g(-1)), excellent rate capability, and long cycle life.
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Affiliation(s)
| | | | | | - Shaojun Guo
- Department of Materials Science and Engineering, Department of Energy and Resources Engineering, and Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, College of Engineering, Peking University , Beijing, 100871, China
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Paladini F, Picca RA, Sportelli MC, Cioffi N, Sannino A, Pollini M. Surface chemical and biological characterization of flax fabrics modified with silver nanoparticles for biomedical applications. Mater Sci Eng C Mater Biol Appl 2015; 52:1-10. [PMID: 25953533 DOI: 10.1016/j.msec.2015.03.035] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 01/16/2015] [Accepted: 03/22/2015] [Indexed: 02/07/2023]
Abstract
Silver nanophases are increasingly used as effective antibacterial agent for biomedical applications and wound healing. This work aims to investigate the surface chemical composition and biological properties of silver nanoparticle-modified flax substrates. Silver coatings were deposited on textiles through the in situ photo-reduction of a silver solution, by means of a large-scale apparatus. The silver-coated materials were characterized through X-ray Photoelectron Spectroscopy (XPS), to assess the surface elemental composition of the coatings, and the chemical speciation of both the substrate and the antibacterial nanophases. A detailed investigation of XPS high resolution regions outlined that silver is mainly present on nanophases' surface as Ag2O. Scanning electron microscopy and energy dispersive X-ray spectroscopy were also carried out, in order to visualize the distribution of silver particles on the fibers. The materials were also characterized from a biological point of view in terms of antibacterial capability and cytotoxicity. Agar diffusion tests and bacterial enumeration tests were performed on Gram positive and Gram negative bacteria, namely Staphylococcus aureus and Escherichia coli. In vitro cytotoxicity tests were performed through the extract method on murine fibroblasts in order to verify if the presence of the silver coating affected the cellular viability and proliferation. Durability of the coating was also assessed, thus confirming the successful scaling up of the process, which will be therefore available for large-scale production.
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Affiliation(s)
- F Paladini
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce, Italy.
| | - R A Picca
- Department of Chemistry, University of Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
| | - M C Sportelli
- Department of Chemistry, University of Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
| | - N Cioffi
- Department of Chemistry, University of Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
| | - A Sannino
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce, Italy
| | - M Pollini
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce, Italy
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