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Patel KD, Keskin-Erdogan Z, Sawadkar P, Nik Sharifulden NSA, Shannon MR, Patel M, Silva LB, Patel R, Chau DYS, Knowles JC, Perriman AW, Kim HW. Oxidative stress modulating nanomaterials and their biochemical roles in nanomedicine. NANOSCALE HORIZONS 2024. [PMID: 39018043 DOI: 10.1039/d4nh00171k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
Many pathological conditions are predominantly associated with oxidative stress, arising from reactive oxygen species (ROS); therefore, the modulation of redox activities has been a key strategy to restore normal tissue functions. Current approaches involve establishing a favorable cellular redox environment through the administration of therapeutic drugs and redox-active nanomaterials (RANs). In particular, RANs not only provide a stable and reliable means of therapeutic delivery but also possess the capacity to finely tune various interconnected components, including radicals, enzymes, proteins, transcription factors, and metabolites. Here, we discuss the roles that engineered RANs play in a spectrum of pathological conditions, such as cancer, neurodegenerative diseases, infections, and inflammation. We visualize the dual functions of RANs as both generator and scavenger of ROS, emphasizing their profound impact on diverse cellular functions. The focus of this review is solely on inorganic redox-active nanomaterials (inorganic RANs). Additionally, we deliberate on the challenges associated with current RANs-based approaches and propose potential research directions for their future clinical translation.
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Affiliation(s)
- Kapil D Patel
- John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia.
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
- School of Cellular and Molecular Medicine, University of Bristol, BS8 1TD, UK
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, Republic of Korea.
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, Cheonan, 31116, Republic of Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, Republic of Korea
| | - Zalike Keskin-Erdogan
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, Republic of Korea
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, NW3 2PF, London, UK
- Department of Chemical Engineering, Imperial College London, Exhibition Rd, South Kensington, SW7 2BX, London, UK
| | - Prasad Sawadkar
- Division of Surgery and Interventional Science, UCL, London, UK
- The Griffin Institute, Northwick Park Institute for Medical Research, Northwick Park and St Mark's Hospitals, London, HA1 3UJ, UK
| | - Nik Syahirah Aliaa Nik Sharifulden
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, NW3 2PF, London, UK
| | - Mark Robert Shannon
- John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia.
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
- School of Cellular and Molecular Medicine, University of Bristol, BS8 1TD, UK
| | - Madhumita Patel
- Department of Chemistry and Nanoscience, Ewha Women University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Lady Barrios Silva
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, NW3 2PF, London, UK
| | - Rajkumar Patel
- Energy & Environment Sciences and Engineering (EESE), Integrated Sciences and Engineering Division (ISED), Underwood International College, Yonsei University, 85 Songdongwahak-ro, Yeonsungu, Incheon 21938, Republic of Korea
| | - David Y S Chau
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, NW3 2PF, London, UK
| | - Jonathan C Knowles
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, Cheonan, 31116, Republic of Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, Republic of Korea
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, NW3 2PF, London, UK
| | - Adam W Perriman
- John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia.
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
- School of Cellular and Molecular Medicine, University of Bristol, BS8 1TD, UK
| | - Hae-Won Kim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, Republic of Korea.
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, Cheonan, 31116, Republic of Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, Republic of Korea
- Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan 31116, Republic of Korea
- Cell & Matter Institute, Dankook University, Cheonan 31116, Republic of Korea
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Mangood AH, Gemeay AH, Abdel-Galeil MM, Salama ES, El-Shater RE. Evaluation of synergistic approach of spinel cadmium-copper nanoferrites as magnetic catalysts for promoting wastewater decontamination: Impact of Ag ions doping. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:106876-106893. [PMID: 37145354 PMCID: PMC10611890 DOI: 10.1007/s11356-023-27170-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 04/18/2023] [Indexed: 05/06/2023]
Abstract
Metal substitution is an efficient strategy to improve the catalytic activity of ferrite-based catalysts. In this study, Cd0.5Cu0.5-xAgxFe2O4 (where 0 ≤ x ≤ 0.5) ferrites were fabricated via a simple co-precipitation method. The influence of the silver ions on the structural, magnetic, and catalytic characteristics of the spinel nanoparticles, as well as on their morphology, was examined. X-ray diffractograms revealed a crystalline cubic spinel structure with crystallite sizes in the nanoregime (7-15 nm). The saturation magnetization reduced from 29.8 to 2.80 emu as the Ag+ doping increased. Two prominent absorption bands were visible in Fourier-transform infrared spectra at 600 cm-1 and 400 cm-1, respectively, and they belonged to the tetrahedral (A) and octahedral (B) sites. The samples were then used as catalysts for the oxidative breakdown of the typical organic contaminant indigo carmine dye (IC). The catalytic process followed the first-order kinetic model, and the rate constant increased from 0.007 to 0.023 min-1 with increasing of Ag+ doping. Cd0.5Cu0.5-xAgxFe2O4 exhibited excellent catalytic performance in the pH range of 2-11, which means that they are promising efficient and stable materials for Fenton-based alkaline wastewater treatment. Finally, the pathway includes, HO•, HO2-•, and O2-• as oxidants resulted from the synergistic effects of Fe3+, Cu2+, and Ag+, with H2O2 and surface hydroxyl groups have been proposed.
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Affiliation(s)
- Ahmed H Mangood
- Chemistry Department, Faculty of Science, Menofia University, Shabien Elkom, Egypt
| | - Ali H Gemeay
- Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt.
| | | | - Eman Sh Salama
- Chemistry Department, Faculty of Science, Menofia University, Shabien Elkom, Egypt
| | - Reda E El-Shater
- Physics Department, Faculty of Science, Tanta University, Tanta, Egypt
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Gudkov SV, Li R, Serov DA, Burmistrov DE, Baimler IV, Baryshev AS, Simakin AV, Uvarov OV, Astashev ME, Nefedova NB, Smolentsev SY, Onegov AV, Sevostyanov MA, Kolmakov AG, Kaplan MA, Drozdov A, Tolordava ER, Semenova AA, Lisitsyn AB, Lednev VN. Fluoroplast Doped by Ag 2O Nanoparticles as New Repairing Non-Cytotoxic Antibacterial Coating for Meat Industry. Int J Mol Sci 2023; 24:ijms24010869. [PMID: 36614309 PMCID: PMC9821803 DOI: 10.3390/ijms24010869] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/20/2022] [Accepted: 12/28/2022] [Indexed: 01/05/2023] Open
Abstract
Foodborne infections are an important global health problem due to their high prevalence and potential for severe complications. Bacterial contamination of meat during processing at the enterprise can be a source of foodborne infections. Polymeric coatings with antibacterial properties can be applied to prevent bacterial contamination. A composite coating based on fluoroplast and Ag2O NPs can serve as such a coating. In present study, we, for the first time, created a composite coating based on fluoroplast and Ag2O NPs. Using laser ablation in water, we obtained spherical Ag2O NPs with an average size of 45 nm and a ζ-potential of -32 mV. The resulting Ag2O NPs at concentrations of 0.001-0.1% were transferred into acetone and mixed with a fluoroplast-based varnish. The developed coating made it possible to completely eliminate damage to a Teflon cutting board. The fluoroplast/Ag2O NP coating was free of defects and inhomogeneities at the nano level. The fluoroplast/Ag2O NP composite increased the production of ROS (H2O2, OH radical), 8-oxogualnine in DNA in vitro, and long-lived active forms of proteins. The effect depended on the mass fraction of the added Ag2O NPs. The 0.01-0.1% fluoroplast/NP Ag2O coating exhibited excellent bacteriostatic and bactericidal properties against both Gram-positive and Gram-negative bacteria but did not affect the viability of eukaryotic cells. The developed PTFE/NP Ag2O 0.01-0.1% coating can be used to protect cutting boards from bacterial contamination in the meat processing industry.
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Affiliation(s)
- Sergey V. Gudkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilove St. 38, 119991 Moscow, Russia
- All-Russia Research Institute of Phytopathology of the Russian Academy of Sciences, Institute St., 5, Big Vyazyomy, 143050 Moscow, Russia
- Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 603105 Nizhny Novgorod, Russia
| | - Ruibin Li
- School for Radiologic and Interdisciplinary Science, Soochow University, Suzhou 215123, China
| | - Dmitriy A. Serov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilove St. 38, 119991 Moscow, Russia
- Institute of Cell Biophysics, Russian Academy of Sciences, Federal Research Center Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, Institutskaya St., 3, 142290 Pushchino, Russia
| | - Dmitriy E. Burmistrov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilove St. 38, 119991 Moscow, Russia
| | - Ilya V. Baimler
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilove St. 38, 119991 Moscow, Russia
| | - Alexey S. Baryshev
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilove St. 38, 119991 Moscow, Russia
| | - Alexander V. Simakin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilove St. 38, 119991 Moscow, Russia
| | - Oleg V. Uvarov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilove St. 38, 119991 Moscow, Russia
| | - Maxim E. Astashev
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilove St. 38, 119991 Moscow, Russia
- Institute of Cell Biophysics, Russian Academy of Sciences, Federal Research Center Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, Institutskaya St., 3, 142290 Pushchino, Russia
| | - Natalia B. Nefedova
- Institute of Cell Biophysics, Russian Academy of Sciences, Federal Research Center Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, Institutskaya St., 3, 142290 Pushchino, Russia
- Federal State Budget Educational Institution of Higher Education Pushchino State Institute of Natural Science, Science Av. 3, 142290 Pushchino, Russia
| | | | - Andrey V. Onegov
- Mari State University, pl. Lenina, 1, 424001 Yoshkar-Ola, Russia
| | - Mikhail A. Sevostyanov
- All-Russia Research Institute of Phytopathology of the Russian Academy of Sciences, Institute St., 5, Big Vyazyomy, 143050 Moscow, Russia
- A.A. Baikov Institute of Metallurgy and Materials Science (IMET RAS) of the Russian Academy of Sciences, Leninsky Prospect, 49, 119334 Moscow, Russia
| | - Alexey G. Kolmakov
- A.A. Baikov Institute of Metallurgy and Materials Science (IMET RAS) of the Russian Academy of Sciences, Leninsky Prospect, 49, 119334 Moscow, Russia
| | - Mikhail A. Kaplan
- A.A. Baikov Institute of Metallurgy and Materials Science (IMET RAS) of the Russian Academy of Sciences, Leninsky Prospect, 49, 119334 Moscow, Russia
| | - Andrey Drozdov
- Institute for Analytical Instrumentation of the Russian Academy of Sciences, Ulitsa Ivana Chernykh, 31–33, lit. A, 198095 St. Petersburg, Russia
| | - Eteri R. Tolordava
- V. M. Gorbatov Federal Research Center for Food Systems, Russian Academy of Sciences, Talalikhina St., 26, 109316 Moscow, Russia
| | - Anastasia A. Semenova
- V. M. Gorbatov Federal Research Center for Food Systems, Russian Academy of Sciences, Talalikhina St., 26, 109316 Moscow, Russia
| | - Andrey B. Lisitsyn
- V. M. Gorbatov Federal Research Center for Food Systems, Russian Academy of Sciences, Talalikhina St., 26, 109316 Moscow, Russia
| | - Vasily N. Lednev
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilove St. 38, 119991 Moscow, Russia
- Correspondence:
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Protein cysteine S-glycosylation: oxidative hydrolysis of protein S-glycosidic bonds in aqueous alkaline environments. Amino Acids 2023; 55:61-74. [PMID: 36460841 PMCID: PMC9877059 DOI: 10.1007/s00726-022-03208-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 09/13/2022] [Indexed: 12/03/2022]
Abstract
Some glycoproteins contain carbohydrates S-linked to cysteine (Cys) residues. However, relatively few S-glycosylated proteins have been detected, due to the lack of an effective research methodology. This work outlines a general concept for the detection of S-glycosylation sites in proteins. The approach was verified by exploratory experiments on a model mixture of β-S-glucosylated polypeptides obtained by the chemical transformation of lysozyme P00698. The model underwent two processes: (1) oxidative hydrolysis of S-glycosidic bonds under alkaline conditions to expose the thiol group of Cys residues; (2) thiol S-alkylation leading to thiol S-adduct formation at the former S-glycosylation sites. Oxidative hydrolysis was conducted in aqueous urea, dimethyl sulfoxide, or trifluoroethanol, with silver nitrate as the reaction promoter, in the presence of triethylamine and/or pyridine. The concurrent formation of stable protein silver thiolates, gluconic acid, and silver nanoclusters was observed. The essential de-metalation of protein silver thiolates using dithiothreitol preceded the S-labeling of Cys residues with 4-vinyl pyridine or a fluorescent reagent. The S-labeled model was sequenced by tandem mass spectrometry to obtain data on the modifications and their distribution over the protein chains. This enabled the efficiency of both S-glycosidic bonds hydrolysis and S-glycosylation site labeling to be evaluated. Suggestions are also given for testing this novel strategy on real proteomic samples.
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Jin B, Zhao D, Yu H, Liu W, Zhang C, Wu M. Rapid degradation of organic pollutants by Fe 3O 4@PDA/Ag catalyst in advanced oxidation process. CHEMOSPHERE 2022; 307:135791. [PMID: 35872061 DOI: 10.1016/j.chemosphere.2022.135791] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/01/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Over the past decades, the development of novel catalysts on the degradation of organic pollutants has attracted increasing attention. In this work, we synthesized silver decorated magnetic nanoparticles (Fe3O4@PDA/Ag NPs) to activate H2O2 for organic pollutants removal via advanced oxidation processes (AOPs). The catalyst was prepared through in-situ reduction of AgNO3 by the polydopamine (PDA) layer on Fe3O4 NPs. Chemiluminescence results obtained from luminol/H2O2 system revealed that the catalyst exhibited excellent catalytic effect on the decomposition of H2O2 into reactive oxygen species (ROS) and superoxide radical (O2-) was mainly responsible for the oxidative degradation. Importantly, the fast evolution frequency of oxygen gas bubbles produced in the reaction of Ag NPs and H2O2 could generate vigorous fluid convection and autonomous motion of catalyst when H2O2 concentration reached 1%. Additionally, the catalyst can suspend in solution for several minutes. Therefore, by coupling the vigorous motion with slow sedimentation velocity, the catalyst can realize rapid degradation of organic pollutants without external mixing force. The Fe3O4@PDA/Ag NPs catalysts not only showed a high removal efficiency of malachite green, but also can be applied for the degradation of other dyes, making it to be a promise candidate for environmental remediation. With the merits of excellent catalytic effect, fast degradation speed, and simplicity of operation, the prepared catalysts exhibits great potential in the practical field.
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Affiliation(s)
- Bing Jin
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Daoyuan Zhao
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Huihui Yu
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Weishuai Liu
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Chunyong Zhang
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Meisheng Wu
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China.
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Zhou K, Zhang Z, Xue J, Shang J, Ding D, Zhang W, Liu Z, Yan F, Cheng N. Hybrid Ag nanoparticles/polyoxometalate-polydopamine nano-flowers loaded chitosan/gelatin hydrogel scaffolds with synergistic photothermal/chemodynamic/Ag + anti-bacterial action for accelerated wound healing. Int J Biol Macromol 2022; 221:135-148. [PMID: 36029962 DOI: 10.1016/j.ijbiomac.2022.08.151] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 08/13/2022] [Accepted: 08/23/2022] [Indexed: 11/20/2022]
Abstract
Bacterial infections significantly slow the wound healing process, thus severely threatening human health. Furthermore, traditional antibiotics may promote the development of multidrug-resistant bacteria. Therefore, developing novel bactericides and therapeutic strategies for bacterial infections is important to enhance wound healing. Herein, a three-in-one bactericidal flower-like nanocomposite was assembled using Ag nanoparticles/phosphotungstic acid-polydopamine nano-flowers (AgNPs/POM-PDA). The nanocomposite exhibited photothermal therapy (PTT) when exposed to NIR light via photothermal conversion by PDA. The resultant photothermal effect accelerated and controlled the Ag+ released from AgNPs. The chemodynamic therapy (CDT) was obtained via POM catalytic Fenton-like reaction. The combined PTT/CDT/Ag+ treatment achieved excellent synergistic anti-bacterial activity against both gram-negative E. coli and gram-positive S. aureus. A multifunctional wound dressing was then obtained by embedding the AgNPs/POM-PDA flower-like nanocomposite into the chitosan (CS)/gelatin (GE) biocomposite hydrogel. The synergy of AgNPs/POM-PDA nanocomposites and CS/GE hydrogel remarkably accelerated wound healing in vivo due to the excellent biocompatibility, hydroabsorptivity, and breathability of the hydrogel. In this study, a multifunctional agent was developed to synergistically combat bacterial infections and accelerate wound healing.
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Affiliation(s)
- Kunpeng Zhou
- College of Pharmacy, Weifang Medical University, Weifang, Shandong 261053, PR China
| | - Zhengchao Zhang
- College of Pharmacy, Weifang Medical University, Weifang, Shandong 261053, PR China
| | - Jingwen Xue
- College of Pharmacy, Weifang Medical University, Weifang, Shandong 261053, PR China
| | - Jianmeng Shang
- College of Pharmacy, Weifang Medical University, Weifang, Shandong 261053, PR China
| | - Dejun Ding
- College of Pharmacy, Weifang Medical University, Weifang, Shandong 261053, PR China
| | - Weifen Zhang
- College of Pharmacy, Weifang Medical University, Weifang, Shandong 261053, PR China
| | - Zhijun Liu
- Department of Medical Microbiology, School of Basic Medical Sciences, Weifang Medical University, Weifang, Shangdong 261053, PR China.
| | - Fang Yan
- College of Pharmacy, Weifang Medical University, Weifang, Shandong 261053, PR China.
| | - Ni Cheng
- College of Pharmacy, Weifang Medical University, Weifang, Shandong 261053, PR China.
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Xu H, Li X, Hu W, Yu Z, Zhou H, Zhu Y, Lu L, Si C. Research Progress of Highly Efficient Noble Metal Catalysts for the Oxidation of 5-Hydroxymethylfurfural. CHEMSUSCHEM 2022; 15:e202200352. [PMID: 35575041 DOI: 10.1002/cssc.202200352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 05/11/2022] [Indexed: 06/15/2023]
Abstract
5-hydroxymethylfurfural (HMF) is considered to be one of the most pivotal multifunctional biomass platform chemicals. This Review discusses recent advances in catalytic oxidation of HMF towards high-value products. The reaction mechanism of different noble metals and the path of HMF oxidation to high-value products have been deeply investigated in the noble metal catalytic system. The reaction mechanisms of different noble metals and HMF conversion paths were compared in detail. Moreover, the factors affecting the performance of different noble metal catalysts were summarized. Finally, effective strategies were put forward to improve the catalytic performance of noble metal catalysts. The purpose is to provide a valuable reference for the academic research on the preparation of oxidation products from biomass-based HMF and the industrial application of noble metal catalysts.
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Affiliation(s)
- Haocheng Xu
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, P. R. China
- School of Agriculture, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Xiaoyun Li
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, P. R. China
- School of Agriculture, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Wenxuan Hu
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, P. R. China
- School of Agriculture, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Zhihao Yu
- Department of Chemistry and Environmental Science, School of Science, Tibet University, Lhasa, 850000, P. R. China
- Tianjin Key Laboratory of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China
| | - Huanran Zhou
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, P. R. China
- School of Agriculture, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Yameng Zhu
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, P. R. China
- School of Agriculture, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Lefu Lu
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, P. R. China
- School of Agriculture, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Chuanling Si
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin, 300457, P. R. China
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Silver Nanoparticles Selectively Treat Neurofibromatosis Type 1-Associated Malignant Peripheral Nerve Sheath Tumors in a Neurofibromin-Dependent Manner. J Pers Med 2022; 12:jpm12071080. [PMID: 35887576 PMCID: PMC9321475 DOI: 10.3390/jpm12071080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 06/27/2022] [Accepted: 06/29/2022] [Indexed: 11/16/2022] Open
Abstract
Neurofibromatosis type 1 (NF1) is among the most common neurogenic disorders, characterized by loss of function mutations in the neurofibromin gene (NF1). NF1 patients are extremely susceptible to developing neurofibromas, which can transform into deadly malignant peripheral nerve sheath tumors (MPNSTs). At the center of these tumors are NF1-null Schwann cells. Here, we found that nanomedicine shows promise in the treatment of NF1-associated MPNSTs. We assessed the cytotoxicity of silver nanoparticles (AgNPs) in NF1-null NF1-associated MPNSTs, NF1-wildtype sporadic MPNST, and normal Schwann cells. Our data show that AgNP are selectivity cytotoxic to NF1-associated MPNSTs relative to sporadic MPNST and Schwann cells. Furthermore, we found that sensitivity to AgNPs is correlated with the expression levels of functional neurofibromin. The restoration of functional neurofibromin in NF1-associated MPNSTs reduces AgNP sensitivity, and the knockdown of neurofibromin in Schwann cells increases AgNP sensitivity. This finding is unique to AgNPs, as NF1 restoration does not alter sensitivity to standard of care chemotherapy doxorubicin in NF1-associated MPNSTs. Using an in vitro model system, we then found that AgNP can selectively eradicate NF1-associated MPNSTs in co-culture with Schwann cells at doses tolerable to normal cells. AgNP represents a novel therapy for the treatment of NF1-associated MPNSTs and addresses significant unmet clinical need.
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Desai AS, Singh A, Edis Z, Haj Bloukh S, Shah P, Pandey B, Agrawal N, Bhagat N. An In Vitro and In Vivo Study of the Efficacy and Toxicity of Plant-Extract-Derived Silver Nanoparticles. J Funct Biomater 2022; 13:jfb13020054. [PMID: 35645262 PMCID: PMC9149986 DOI: 10.3390/jfb13020054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/17/2022] [Accepted: 05/05/2022] [Indexed: 02/05/2023] Open
Abstract
Silver nanoparticles (AgNPs) display unique plasmonic and antimicrobial properties, enabling them to be helpful in various industrial and consumer products. However, previous studies showed that the commercially acquired silver nanoparticles exhibit toxicity even in small doses. Hence, it was imperative to determine suitable synthesis techniques that are the most economical and least toxic to the environment and biological entities. Silver nanoparticles were synthesized using plant extracts and their physico-chemical properties were studied. A time-dependent in vitro study using HEK-293 cells and a dose-dependent in vivo study using a Drosophila model helped us to determine the correct synthesis routes. Through biological analyses, we found that silver nanoparticles’ cytotoxicity and wound-healing capacity depended on size, shape, and colloidal stability. Interestingly, we observed that out of all the synthesized AgNPs, the ones derived from the turmeric extract displayed excellent wound-healing capacity in the in vitro study. Furthermore, the same NPs exhibited the least toxic effects in an in vivo study of ingestion of these NPs enriched food in Drosophila, which showed no climbing disability in flies, even at a very high dose (250 mg/L) for 10 days. We propose that stabilizing agents played a superior role in establishing the bio-interaction of nanoparticles. Our study reported here verified that turmeric-extract-derived AgNPs displayed biocompatibility while exhibiting the least cytotoxicity.
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Affiliation(s)
- Anjana S. Desai
- Department of Applied Science, Symbiosis Institute of Technology, Symbiosis International (Deemed University), Pune 412115, India; (A.S.D.); (B.P.)
| | - Akanksha Singh
- Department of Zoology, University of Delhi, New Delhi 110007, India;
| | - Zehra Edis
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Science, Ajman University, Ajman P.O. Box 346, United Arab Emirates
- Center of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman P.O. Box 346, United Arab Emirates;
- Correspondence: (Z.E.); (N.A.); (N.B.); Tel.: +971-5-6694-7751 (Z.E.)
| | - Samir Haj Bloukh
- Center of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman P.O. Box 346, United Arab Emirates;
- Department of Clinical Sciences, College of Pharmacy and Health Science, Ajman University, Ajman P.O. Box 346, United Arab Emirates
| | - Prasanna Shah
- Department of Physics, Acropolis Institute of Technology and Research, Indore 453771, India;
| | - Brajesh Pandey
- Department of Applied Science, Symbiosis Institute of Technology, Symbiosis International (Deemed University), Pune 412115, India; (A.S.D.); (B.P.)
| | - Namita Agrawal
- Department of Zoology, University of Delhi, New Delhi 110007, India;
- Correspondence: (Z.E.); (N.A.); (N.B.); Tel.: +971-5-6694-7751 (Z.E.)
| | - Neeru Bhagat
- Department of Applied Science, Symbiosis Institute of Technology, Symbiosis International (Deemed University), Pune 412115, India; (A.S.D.); (B.P.)
- Correspondence: (Z.E.); (N.A.); (N.B.); Tel.: +971-5-6694-7751 (Z.E.)
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10
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Ma C, Huang R, Huangfu X, Ma J, He Q. Light- and H 2O 2-Mediated Redox Transformation of Thallium in Acidic Solutions Containing Iron: Kinetics and Mechanistic Insights. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:5530-5541. [PMID: 35435677 DOI: 10.1021/acs.est.2c00034] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The redox transformation between the oxidation states of thallium (Tl(I) and Tl(III)) is the key to influencing its toxicity, reactivity, and mobility. Dissolved iron (Fe) is widely distributed in the environment and coexists at a high level with Tl in acidic mine drainages (AMDs). While ultraviolet (UV) light and H2O2 can directly (by inducing Tl(III) reduction) and indirectly (by inducing Fe(III) to form reactive intermediates) impact the redox cycles of Tl in Fe(III)-containing solutions, the kinetics and mechanism remain largely unclear. This study is the first to investigate the UV light- and H2O2-mediated Tl redox kinetics in acidic Fe(III) solutions. The results demonstrate that UV light and H2O2 could directly reduce Tl(III) to Tl(I), with the extent of reduction dependent on the presence of Fe(III) and the solution pH. At pH 3.0, Tl(I) was completely oxidized to Tl(III), which can be ascribed to the generation of hydroxyl radicals (•OH) from the Fe(III) photoreduction or Fe(III) reaction with H2O2. The kinetics of Tl(I) oxidation were strongly affected by the Fe(III) concentration, pH, light source, and water matrix. Kinetic models incorporating Tl redox kinetics with Fe redox kinetics were developed and satisfactorily interpreted Tl(III) reduction and Tl(I) oxidation under the examined conditions. These findings emphasize the roles of the UV light- and H2O2-driven Fe cycles in influencing the redox state of Tl, with implications for determining its mobility and fate in the environment.
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Affiliation(s)
- Chengxue Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Ruixing Huang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xiaoliu Huangfu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qiang He
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
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11
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Wang Q, Zhou H, Hao T, Hu K, Qin L, Ren X, Guo Z, Wang S, Hu Y. A fully integrated fast scan cyclic voltammetry electrochemical method: Improvements in reaction kinetics and signal stability for specific Ag(I) and Hg(II) analysis. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Li Y, Li J, Cao Y, Jiang P, Tang Y, Chen Z, Han K. A visual method for determination of hepatitis C virus RNAs based on a 3D nanocomposite prepared from graphene quantum dots. Anal Chim Acta 2022; 1203:339693. [DOI: 10.1016/j.aca.2022.339693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 02/22/2022] [Accepted: 03/05/2022] [Indexed: 01/17/2023]
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13
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Fu Y, Yin Z, Qin L, Huang D, Yi H, Liu X, Liu S, Zhang M, Li B, Li L, Wang W, Zhou X, Li Y, Zeng G, Lai C. Recent progress of noble metals with tailored features in catalytic oxidation for organic pollutants degradation. JOURNAL OF HAZARDOUS MATERIALS 2022; 422:126950. [PMID: 34449327 DOI: 10.1016/j.jhazmat.2021.126950] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 08/10/2021] [Accepted: 08/16/2021] [Indexed: 05/23/2023]
Abstract
With the increasing serious water pollutions, an increasing interest has given for the nanocomposites as environmental catalysts. To date, noble metals-based nanocomposites have been extensively studied by researchers in environmental catalysis. In detail, serving as key functional parts, noble metals are usually combined with other nanomaterials for rationally designing nanocomposites, which exhibit enhanced catalytic properties in pollutants removal. Noble metals in the nanocomposites possess tailored properties, thus playing different important roles in catalytic oxidation reactions for pollutants removal. To motivate the research and elaborate the progress of noble metals, this review (i) summarizes advanced characterization techniques and rising technology of theoretical calculation for evaluating noble metal, and (ii) classifies the roles according to their disparate mechanism in different catalytic oxidation reactions. Meanwhile, the enhanced mechanism and influence factors are discussed. (iii) The conclusions, facing challenges and perspectives are proposed for further development of noble metals-based nanocomposites as environmental catalysts.
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Affiliation(s)
- Yukui Fu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Zhuo Yin
- Department of Urology, Second Xiangya Hospital, Central South University, Changsha 410011, PR China
| | - Lei Qin
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Danlian Huang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Huan Yi
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Xigui Liu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Shiyu Liu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Mingming Zhang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Bisheng Li
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Ling Li
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Wenjun Wang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Xuerong Zhou
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Yixia Li
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Guangming Zeng
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China; Department of Urology, Second Xiangya Hospital, Central South University, Changsha 410011, PR China.
| | - Cui Lai
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China.
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14
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Angelini G, Gasbarri C. Green synthesis and properties of silver nanoparticles in sulfobutylether-β-cyclodextrin aqueous solution. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Ma X, Lang J, Chen P, Yang R. Silver Nanoparticles as an Effective Antimicrobial against Otitis Media Pathogens. AIChE J 2021; 67. [PMID: 35450419 DOI: 10.1002/aic.17468] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Otitis Media (OM) is the most common reason for U.S. children to receive prescribed oral antibiotics, leading to potential to cause antibiotic resistance. To minimize oral antibiotic usage, we developed polyvinylpyrrolidone-coated silver nanoparticles (AgNPs-PVP), which completely eradicated common OM pathogens, i.e., Streptococcus pneumoniae and non-typeable Haemophilus influenzae (NTHi) at 1.04μg/mL and 2.13μg/mL. The greater antimicrobial efficacy against S. pneumoniae was a result of the H2O2-producing ability of S. pneumoniae and the known synergistic interactions between H2O2 and AgNPs. To enable the sustained local delivery of AgNPs-PVP (e.g., via injection through perforated tympanic membranes), a hydrogel formulation of 18%(w/v)P407 was developed. Reverse thermal gelation of the AgNPs-PVP-P407 hydrogel could gel rapidly upon entering the warm auditory bullae and thereby sustained release of antimicrobials. This hydrogel-based local delivery system completely eradicated OM pathogens in vitro without cytotoxicity, and thus represents a promising strategy for treating bacterial OM without relying on conventional antibiotics.
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Affiliation(s)
- Xiaojing Ma
- Robert F. Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Jiayan Lang
- Robert F. Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Pengyu Chen
- Robert F. Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Rong Yang
- Robert F. Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14850, USA
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16
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Apak R, Calokerinos A, Gorinstein S, Segundo MA, Hibbert DB, Gülçin İ, Demirci Çekiç S, Güçlü K, Özyürek M, Çelik SE, Magalhães LM, Arancibia-Avila P. Methods to evaluate the scavenging activity of antioxidants toward reactive oxygen and nitrogen species (IUPAC Technical Report). PURE APPL CHEM 2021. [DOI: 10.1515/pac-2020-0902] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Abstract
This project was aimed to identify the quenching chemistry of biologically important reactive oxygen and nitrogen species (ROS/RNS, including radicals), to show antioxidant action against reactive species through H‐atom and electron transfer reactions, and to evaluate the ROS/RNS scavenging activity of antioxidants with existing analytical methods while emphasizing the underlying chemical principles and advantages/disadvantages of these methods. In this report, we focused on the applications and impact of existing assays on potentiating future research and innovations to evolve better methods enabling a more comprehensive study of different aspects of antioxidants and to provide a vocabulary of terms related to antioxidants and scavengers for ROS/RNS. The main methods comprise the scavenging activity measurement of the hydroxyl radical (•OH), dioxide(•1–) (O2
•–: commonly known as the superoxide radical), dihydrogen dioxide (H2O2: commonly known as hydrogen peroxide), hydroxidochlorine (HOCl: commonly known as hypochlorous acid), dioxidooxidonitrate(1–) (ONOO−: commonly known as the peroxynitrite anion), and the peroxyl radical (ROO•). In spite of the diversity of methods, there is currently a great need to evaluate the scavenging activity of antioxidant compounds in vivo and in vitro. In addition, there are unsatisfactory methods frequently used, such as non-selective UV measurement of H2O2 scavenging, producing negative errors due to incomplete reaction of peroxide with flavonoids in the absence of transition metal ion catalysts. We also discussed the basic mechanisms of spectroscopic and electrochemical nanosensors for measuring ROS/RNS scavenging activity of antioxidants, together with leading trends and challenges and a wide range of applications. This project aids in the identification of reactive species and quantification of scavenging extents of antioxidants through various assays, makes the results comparable and more understandable, and brings a more rational basis to the evaluation of these assays and provides a critical evaluation of existing ROS/RNS scavenging assays to analytical, food chemical, and biomedical/clinical communities by emphasizing the need for developing more refined, rapid, simple, and low‐cost assays and thus opening the market for a wide range of analytical instruments, including reagent kits and sensors.
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Affiliation(s)
- Reşat Apak
- Department of Chemistry , Istanbul University-Cerrahpaşa, Faculty of Engineering , Avcılar, 34320 Istanbul , Turkey
| | - Antony Calokerinos
- Department of Chemistry , National and Kapodistrian University of Athens, School of Sciences , Panepistimiopolis, 15771 Athens , Greece
| | - Shela Gorinstein
- The Hebrew University, Hadassah Medical School, School of Pharmacy, The Institute for Drug Research , Jerusalem , Israel
| | - Marcela Alves Segundo
- Department of Chemical Sciences , LAQV, REQUIMTE, Faculty of Pharmacy, University of Porto , Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto , Portugal
| | - David Brynn Hibbert
- New South Wales University, School of Chemistry , Sydney , NSW 2052 , Australia
| | - İlhami Gülçin
- Department of Chemistry , Faculty of Science, Atatürk University , Erzurum , Turkey
| | - Sema Demirci Çekiç
- Department of Chemistry , Istanbul University-Cerrahpaşa, Faculty of Engineering , Avcılar, 34320 Istanbul , Turkey
| | - Kubilay Güçlü
- Department of Chemistry , Adnan Menderes University, Faculty of Arts and Sciences , Aydın , Turkey
| | - Mustafa Özyürek
- Department of Chemistry , Istanbul University-Cerrahpaşa, Faculty of Engineering , Avcılar, 34320 Istanbul , Turkey
| | - Saliha Esin Çelik
- Department of Chemistry , Istanbul University-Cerrahpaşa, Faculty of Engineering , Avcılar, 34320 Istanbul , Turkey
| | - Luís M. Magalhães
- Department of Chemical Sciences , LAQV, REQUIMTE, Faculty of Pharmacy, University of Porto , Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto , Portugal
| | - Patricia Arancibia-Avila
- Departamento de Ciencias Básicas , Laboratorio de Ecofisiología y Microalgas, Universidad del Bio-Bio , Chillán , Chile
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17
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Kang X, Sun T, Zhang L, Zhou C, Xu Z, Du M, Xiao S, Liu Y, Gong M, Zhang D. Synergistic Theranostics of Magnetic Resonance Imaging and Photothermal Therapy of Breast Cancer Based on the Janus Nanostructures Fe 3O 4-Au shell-PEG. Int J Nanomedicine 2021; 16:6383-6394. [PMID: 34556986 PMCID: PMC8455180 DOI: 10.2147/ijn.s322894] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 09/03/2021] [Indexed: 11/23/2022] Open
Abstract
Background Satisfactory prognosis of breast cancer (BC) is limited by difficulty in early diagnosis and insufficient treatment. The combination of molecular imaging and photothermal therapy (PTT) may provide a solution. Methods Fe3O4-Aushell nanoparticles (NPs) were prepared by thermal decomposition, seeded growth and galvanic replacement and were comprehensively characterized. After conjugated to PEG, NPs were used as MRI and PTT agents in vitro and in vivo. Results Fe3O4-Aushell NPs which had uniform Janus-like morphology were successfully synthesized. The Fe3O4 had a size of 18 ± 2.2 nm, and the Aushell had an outer diameter of 25 ± 3.3 nm and an inner diameter of 20 ± 2.9 nm. The NPs showed superparamagnetism, a saturation magnetization of 36 emu/g, and an optical absorption plateau from 700 to 808 nm. The Fe3O4-Aushell NPs were determined to possess good biocompatibility. After PEG coating, the zeta potential of NPs was changed from −23.75 ± 1.37 mV to −13.93 ± 0.55 mV, and the FTIR showed the characteristic C–O stretching vibration at 1113 cm−1. The NPs’ MR imaging implied that the T2 can be shortened by Fe3O4-Aushell NPs in a concentration-dependent manner, and the Fe3O4-Aushell NPs coated with PEG at the molar ratio of 160 (PEG: NPs) showed the highest transverse relaxivity (r2) of 216 mM−1s−1. After irradiation at 0.65 W/cm2 for 5 min, all cells incubated with the Fe3O4-Aushell-PEG160 NPs (Fe: 30 ppm, Au: 70 ppm) died. After administrated intratumorally, Fe3O4-Aushell-PEG160 notably decreased the signal intensity of tumor in T2WI images. Under the same irradiation, the temperature of tumors injected with Fe3O4-Aushell-PEG160 quickly rose to 54.6°C, and the tumors shrank rapidly and were ablated in 6 days. Conclusion Fe3O4-Aushell-PEG NPs show good r2 and PTT performance and are promising synergistic theranostic agents of MRI and PTT for BC.
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Affiliation(s)
- Xun Kang
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Tao Sun
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Liang Zhang
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Chunyu Zhou
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Zhongsheng Xu
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Mengmeng Du
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Shilin Xiao
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Yun Liu
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Mingfu Gong
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Dong Zhang
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
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18
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Xue S, Chen SL, Ling Q, Yuan Q, Gan W. Photocatalytic redox on the surface of colloidal silver nanoparticles revealed by second harmonic generation and two-photon luminescence. Phys Chem Chem Phys 2021; 23:19752-19759. [PMID: 34524302 DOI: 10.1039/d1cp02722k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The redox of silver on the surface of Ag nanoparticles (AgNPs) has received extensive attention because of its significant impact on the biological, physical and chemical properties of AgNPs and their applications. Here we demonstrate that the surface redox reaction of AgNPs in colloids may be investigated by the second harmonic generation (SHG) and two-photon luminescence (TPL) emission from the AgNPs. It was revealed that the oxidation of silver on the surface of AgNPs was accelerated upon femtosecond laser excitation, accompanied by a decrease in the SHG and TPL emissions from the AgNPs. The photon-induced reduction of oxidized silver on AgNPs and the formation of surface defects were also revealed by the changes in the SHG and TPL emissions. Size and morphology changes have not been detected by dynamic light scattering and TEM measurements. The changes in the UV-vis extinction spectra were also very weak compared with previous reports. However, the occurrence of redox reactions on the Ag surface upon femtosecond laser irradiation has been confirmed by multiple control experiments. This work demonstrates that SHG and TPL can sensitively probe the subtle structural change on the surface of AgNPs.
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Affiliation(s)
- Shan Xue
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, also School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China.,School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China.
| | - Shun-Li Chen
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Province, Shantou University, Shantou 515063, Guangdong, China
| | - Qing Ling
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, also School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China.,School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China.
| | - Qunhui Yuan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, also School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China
| | - Wei Gan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, also School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China.,School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China.
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19
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Rossbach LM, Oughton DH, Maremonti E, Eide DM, Brede DA. Impact of multigenerational exposure to AgNO 3 or NM300K Ag NPs on antioxidant defense and oxidative stress in Caenorhabditis elegans. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 216:112178. [PMID: 33812211 DOI: 10.1016/j.ecoenv.2021.112178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/17/2021] [Accepted: 03/19/2021] [Indexed: 06/12/2023]
Abstract
Adaptation of the nematode Caenorhabditis elegans towards NM300K silver nanoparticles (Ag NPs) has previously been demonstrated. In the current study, the sensitivity to a range of secondary stressors (CeO2 NP, Ce3+, Cu2+, Cd2+, and Paraquat) following the multigenerational exposure to silver nanoparticles (Ag NPs NM300K) or AgNO3 was investigated. This revealed improved tolerance to the ROS inducer Paraquat with higher fecundity after pre-exposure to Ag NP, indicating an involvement of reactive oxygen species (ROS) metabolism in the adaptive response to NM300K. The potential contribution of the antioxidant defenses related to adaptive responses was investigated across six generations of exposure using the sod-1::GFP reporter (GA508), and the Grx1-roGFP2 (GRX) biosensor strains. Results showed an increase in sod-1 expression by the F3 generation, accompanied by a reduction of GSSG/GSH ratios, from both AgNO3 and Ag NP exposures. Continuous exposure to AgNO3 and Ag NP until the F6 generation resulted in a decreased sod-1 expression, with a concomitant increase in GSSG/GSH ratios. The results thus show that despite an initial enhancement, the continuous exposure to Ag caused a severe impairment of the antioxidant defense capacity in C. elegans.
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Affiliation(s)
- Lisa M Rossbach
- Norwegian University of Life Sciences, Faculty of Environmental Sciences and Natural Resource Management, P.O. BOX 5003 NMBU, No-1432 Ås, Norway.
| | - Deborah H Oughton
- Norwegian University of Life Sciences, Faculty of Environmental Sciences and Natural Resource Management, P.O. BOX 5003 NMBU, No-1432 Ås, Norway
| | - Erica Maremonti
- Norwegian University of Life Sciences, Faculty of Environmental Sciences and Natural Resource Management, P.O. BOX 5003 NMBU, No-1432 Ås, Norway
| | - Dag M Eide
- Norwegian Institute of Public Health, Lovisenberggata 8, 0456 Oslo, Norway
| | - Dag A Brede
- Norwegian University of Life Sciences, Faculty of Environmental Sciences and Natural Resource Management, P.O. BOX 5003 NMBU, No-1432 Ås, Norway
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20
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Selective oxidation of 5-hydroxymethylfurfural to 5-hydroxymethyl-2-furancarboxylic acid using silver oxide supported on calcium carbonate. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2020.111374] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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22
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Gupta NK, Bae J, Kim KS. Bimetallic Ag–Cu-trimesate metal–organic framework for hydrogen sulfide removal. NEW J CHEM 2021. [DOI: 10.1039/d1nj04601b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Bimetallic Ag-Cu-trimesate metal-organic framework was fabricated for H2S mineralization. The MOF was partially regenerated using H2O2 solution for five cycles.
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Affiliation(s)
- Nishesh Kumar Gupta
- University of Science and Technology (UST), Daejeon, Republic of Korea
- Department of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang, Republic of Korea
| | - Jiyeol Bae
- University of Science and Technology (UST), Daejeon, Republic of Korea
- Department of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang, Republic of Korea
| | - Kwang Soo Kim
- University of Science and Technology (UST), Daejeon, Republic of Korea
- Department of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang, Republic of Korea
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23
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Hasan S, Rauf A. The development of a multifunctional 9,10-dibromooctadecanoic acid-encapsulated heterostructure (Ag@Ag 2O) as a nanocatalyst against water toxicity. NEW J CHEM 2021. [DOI: 10.1039/d1nj01013a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fatty acid derivatives capped Ag@Ag2O CSN have been easily synthesized. Comparative catalytic degradation studies against various water contaminants, MB, MO and Cr(vi) have been performed. The experimental results are in favor of CSN, compared to simple fatty acid-coated nanoparticles.
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Affiliation(s)
- Shazia Hasan
- Department of Chemistry
- Aligarh Muslim University
- Aligarh 202002
- India
| | - Abdul Rauf
- Department of Chemistry
- Aligarh Muslim University
- Aligarh 202002
- India
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24
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Liu W, Ge H, Ding X, Lu X, Zhang Y, Gu Z. Cubic nano-silver-decorated manganese dioxide micromotors: enhanced propulsion and antibacterial performance. NANOSCALE 2020; 12:19655-19664. [PMID: 32996985 DOI: 10.1039/d0nr06281b] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The increasing threat of antibiotic-resistant bacterial strains represents the current antibacterial dilemma and requires novel bactericidal treatment to circumvent this problem. In this work, an efficient strategy for killing bacteria using PEDOT/MnO2@Ag micromotors is reported based on the intense motion-induced convection and excellent sterilization ability of silver (Ag) ions. A distinctive inner surface structure with cubic Ag nanoparticle growth and dispersion in the MnO2 layer was constructed by simple cathodic co-electrodeposition. Due to the synergistic catalytic reaction of both MnO2 and Ag, the micromotors can rapidly swim in very low concentrations of hydrogen peroxide (H2O2). The antibacterial efficiency of the micromotors was evaluated with the Escherichia coli (E. coli) model. The continuous movement of micromotors, corresponding to violent mass transfer, along with the on-the-fly release of silver ions, greatly enhanced bacteria killing efficacy, with about 14% increase in bacterial death in 0.2% H2O2 solution as compared to no motors. Such proposed micromotors could be ideal candidates for combating antibiotic-resistant bacteria in the fields of biomedical and environmental applications.
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Affiliation(s)
- Wenjuan Liu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China.
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25
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Scroccarello A, Della Pelle F, Ferraro G, Fratini E, Tempera F, Dainese E, Compagnone D. Plasmonic active film integrating gold/silver nanostructures for H 2O 2 readout. Talanta 2020; 222:121682. [PMID: 33167288 DOI: 10.1016/j.talanta.2020.121682] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/13/2020] [Accepted: 09/15/2020] [Indexed: 12/16/2022]
Abstract
A nanostructured Ag/Au adhesive film for H2O2 reagentless determination is here proposed. The film has been realised onto ELISA polystyrene microplates. Microwells surface has been initially modified with a gold nanoparticles (AuNPs)/polydopamine thin-film. The pristine AuNPs-decorated film was later functionalized with catechin (Au-CT) allowing a uniform formation of a plasmonic active nanostructured silver network in presence of Ag+. Changes in localized surface plasmon resonance (LSPR) of the silver network upon addition of H2O2 has been used as analytical signal, taking advantage of the etching phenomenon. The Ag/Au nanocomposite-film is characterized by a well-defined (LSPRmax = 405 ± 5 nm), reproducible (intraplate RSD ≤ 9.8%, n = 96; inter-plate RSD ≤ 11.4%, n = 480) and stable LSPR signal. The film's analytical features have been tested for H2O2 and glucose (bio)sensing. Satisfactory analytical performances were obtained both for H2O2 (linear range 1-200 μM, R2 = 0.9992, RSD ≤ 6.3%, LOD = 0.2 μM) and glucose (linear range 2-250 μM, R2 = 0.9998, RSD ≤ 8.9%, LOD = 0.4 μM). As proof of applicability, the determination of the two analytes in soft drinks has been carried out achieving good and reproducible recoveries (84-111%; RSD ≤ 9%). The developed nanostructured film overcomes analytical drawbacks associated with the use of colloidal dispersions in plasmonic assays carried out in solution; the low cost, robustness, ease of use and possibility of coupling enzymatic reactions appears very promising for (bio)sensors based on the detection of H2O2.
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Affiliation(s)
- Annalisa Scroccarello
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100, Teramo, Italy
| | - Flavio Della Pelle
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100, Teramo, Italy.
| | - Giovanni Ferraro
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, Via Della Lastruccia 3-Sesto Fiorentino, I-50019, Florence, Italy
| | - Emiliano Fratini
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, Via Della Lastruccia 3-Sesto Fiorentino, I-50019, Florence, Italy
| | - Francesco Tempera
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100, Teramo, Italy
| | - Enrico Dainese
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100, Teramo, Italy
| | - Dario Compagnone
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100, Teramo, Italy.
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26
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da Silva RTP, Petri MV, Valencia EY, Camargo PHC, de Torresi SIC, Spira B. Visible light plasmon excitation of silver nanoparticles against antibiotic-resistant Pseudomonas aeruginosa. Photodiagnosis Photodyn Ther 2020; 31:101908. [PMID: 32634655 DOI: 10.1016/j.pdpdt.2020.101908] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 06/11/2020] [Accepted: 06/26/2020] [Indexed: 12/22/2022]
Abstract
The interaction of metallic nanoparticles with light excites a local surface plasmon resonance (LSPR). This phenomenon enables the transfer of hot electrons to substrates that release Reactive Oxygen Species (ROS). In this context, the present study aimed at enhancing the antibacterial effect of citrate-covered silver nanoparticles (AgNPs) by LSPR excitation with visible LED. AgNPs possess excellent antimicrobial properties against Pseudomonas aeruginosa, one of the most refractory organisms to antibiotic treatment. The Minimum Inhibitory Concentration (MIC) of the AgNPs was 10 μg/ml under dark conditions and 5 μg/ml under light conditions. The combination of light and AgNPs led to 100% cell death after 60 min. Flow cytometry quantification showed that bacteria treated with LSPR-stimulated AgNPs displayed 4.8 times more ROS. This significant increase in ROS possibly accounts for most of the antimicrobial effect of the AgNPs. In addition, light exposition caused a small release of silver ions (0.4%) suggesting that silver ions may play a secondary role in P. aeruginosa death. Overall, the results presented here show that LSPR stimulation of AgNPs by visible light enhances the antimicrobial activity of silver nanoparticles and can be an alternative for the treatment of topic infections caused by antibiotic-resistant bacteria such as P. aeruginosa.
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Affiliation(s)
- Rafael T P da Silva
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Brazil
| | - Marcos V Petri
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Brazil
| | - Estela Y Valencia
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Pedro H C Camargo
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Brazil
| | - Susana I C de Torresi
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Brazil
| | - Beny Spira
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, Brazil.
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27
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Electron tunneling of hierarchically structured silver nanosatellite particles for highly conductive healable nanocomposites. Nat Commun 2020; 11:2252. [PMID: 32382034 PMCID: PMC7206115 DOI: 10.1038/s41467-020-15709-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 03/23/2020] [Indexed: 01/13/2023] Open
Abstract
Healable conductive materials have received considerable attention. However, their practical applications are impeded by low electrical conductivity and irreversible degradation after breaking/healing cycles. Here we report a highly conductive completely reversible electron tunneling-assisted percolation network of silver nanosatellite particles for putty-like moldable and healable nanocomposites. The densely and uniformly distributed silver nanosatellite particles with a bimodal size distribution are generated by the radical and reactive oxygen species-mediated vigorous etching and reduction reaction of silver flakes using tetrahydrofuran peroxide in a silicone rubber matrix. The close work function match between silicone and silver enables electron tunneling between nanosatellite particles, increasing electrical conductivity by ~5 orders of magnitude (1.02×103 Scm−1) without coalescence of fillers. This results in ~100% electrical healing efficiency after 1000 breaking/healing cycles and stability under water immersion and 6-month exposure to ambient air. The highly conductive moldable nanocomposite may find applications in improvising and healing electrical parts. Self-healable conductive materials are of importance for emerging electronic technologies. Here, Suh et al. report a nanocomposite exhibiting high conductivity facilitated by electron tunneling between silver nanoparticles and its 100% recovery of conductivity after 1000 breaking and healing cycles.
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28
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Degradation of recalcitrant organics in nanofiltration concentrate from biologically pretreated landfill leachate by ultraviolet-Fenton method. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116076] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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29
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Riaz Rajoka MS, Mehwish HM, Zhang H, Ashraf M, Fang H, Zeng X, Wu Y, Khurshid M, Zhao L, He Z. Antibacterial and antioxidant activity of exopolysaccharide mediated silver nanoparticle synthesized by Lactobacillus brevis isolated from Chinese koumiss. Colloids Surf B Biointerfaces 2020; 186:110734. [DOI: 10.1016/j.colsurfb.2019.110734] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/28/2019] [Accepted: 12/14/2019] [Indexed: 12/19/2022]
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30
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Polo AMS, Lopez-Peñalver JJ, Sánchez-Polo M, Rivera-Utrilla J, López-Ramón MV, Rozalén M. Halide removal from water using silver doped magnetic-microparticles. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 253:109731. [PMID: 31665690 DOI: 10.1016/j.jenvman.2019.109731] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 10/02/2019] [Accepted: 10/16/2019] [Indexed: 06/10/2023]
Abstract
This study proposes the use of new materials based on core-shell structure magnetic microparticles with Ag0 (Ag(0)-MPs) on their surface to remove bromides and chlorides from waters intended for human consumption. Hydrogen peroxide was used as oxidizing agent, Ag(0)-MPs is thereby oxidized to Ag (I)-MPs, which, when in contact with Cl- and Br- ions, form the corresponding silver halide (AgCl and AgBr) on the surface of Ag-MPs. The concentration of Cl- and Br- ions was followed by using ion selective electrodes (ISEs). Silver microparticles were characterized by high-resolution scanning electron microscopy and X-ray photoelectron spectroscopy, while the presence of AgCl and AgBr on Ag-MPs was determined by microanalysis. We analyzed the influence of operational variables, including: hydrogen peroxide concentration in Ag-MP system, medium pH, influence of Cl- ions on Br- ion removal, and influence of tannic acid as surrogate of organic matter in the medium. Regarding the influence of pH, Br-and Cl- removal was constant within the pH range studied (3.5-7), being more effective for Br- than for Cl- ions. Accordingly, this research states that the system Ag-MPs/H2O2 can remove up to 67.01% of Br- ions and 56.92% of Cl- ions from water (pH = 7, [Ag-MPs]0 = 100 mg L-1, [H2O2]0 = 0.2 mM); it is reusable, regenerated by radiation and can be easily removed by applying a magnetically assisted chemical separation process.
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Affiliation(s)
- A M S Polo
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, Campus Fuentenueva s/n, ES18071, Granada, Spain
| | - J J Lopez-Peñalver
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, Campus Fuentenueva s/n, ES18071, Granada, Spain
| | - M Sánchez-Polo
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, Campus Fuentenueva s/n, ES18071, Granada, Spain.
| | - J Rivera-Utrilla
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, Campus Fuentenueva s/n, ES18071, Granada, Spain
| | - M V López-Ramón
- Department of Inorganic and Organic Chemistry, Faculty of Science, University of Jaén, Campus Las Lagunillas s/n, ES23071, Jaén, Spain
| | - M Rozalén
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, Campus Fuentenueva s/n, ES18071, Granada, Spain
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31
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Zhou C, Wang Q, Lv X, Wang W. Non-oscillatory micromotors “learn” to oscillate on-the-fly from oscillating Ag micromotors. Chem Commun (Camb) 2020; 56:6499-6502. [DOI: 10.1039/d0cc02266g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Oscillating Ag-containing micromotors release silver ions that diffuse and deposit on the surface of Au–Rh microrods, which then learn to oscillate individually or collectively as a wave.
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Affiliation(s)
- Chao Zhou
- School of Materials Science and Engineering
- Harbin Institute of Technology (Shenzhen)
- Shenzhen
- China
| | - Qizhang Wang
- School of Materials Science and Engineering
- Harbin Institute of Technology (Shenzhen)
- Shenzhen
- China
| | - Xianglong Lv
- School of Materials Science and Engineering
- Harbin Institute of Technology (Shenzhen)
- Shenzhen
- China
| | - Wei Wang
- School of Materials Science and Engineering
- Harbin Institute of Technology (Shenzhen)
- Shenzhen
- China
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32
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Yuan B, Sui M, Lu H, Wang J, Qin J. The combined effect of light irradiation and chloride on the physicochemical properties of silver nanoparticles. RSC Adv 2020; 10:228-235. [PMID: 35492535 PMCID: PMC9047535 DOI: 10.1039/c9ra09261g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 12/10/2019] [Indexed: 11/21/2022] Open
Abstract
The evolution of various properties of Ag NPs during light irradiation in Cl−-containing water were investigated, and the mechanism was deeply studied.
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Affiliation(s)
- Bojie Yuan
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
| | - Minghao Sui
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
| | - Hongtao Lu
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
| | - Jingyu Wang
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
| | - Jie Qin
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
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33
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Kandula V, Balakrishna C, Behera M, Nagababu U, Kumar GK, Chatterjee A. Catalytic Efficiency of Biosynthesized Silver Nanoparticles in Synthesis of Chromones and Reduction of Nitro Aromatics. ChemistrySelect 2019. [DOI: 10.1002/slct.201903001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Venu Kandula
- Department of ChemistryKoneru Laksmaiah Education Foundation Vaddeswaram, Guntur, Andhra Pradesh India 522502
- Medicinal Chemistry DepartmentGVK Biosciences Pvt. Ltd., Mallapur Hyderabad, Telangana India 500076
| | - C. Balakrishna
- Medicinal Chemistry DepartmentGVK Biosciences Pvt. Ltd., Mallapur Hyderabad, Telangana India 500076
| | - Manoranjan Behera
- Medicinal Chemistry DepartmentGVK Biosciences Pvt. Ltd., Mallapur Hyderabad, Telangana India 500076
| | - Uppu Nagababu
- Department of ChemistryKoneru Laksmaiah Education Foundation Vaddeswaram, Guntur, Andhra Pradesh India 522502
| | - G. Kiran Kumar
- Department of PhysicsRaghu Engineering College Visakhapatnam, Andhra Pradesh India - 531162
| | - Anindita Chatterjee
- Department of ChemistryKoneru Laksmaiah Education Foundation Vaddeswaram, Guntur, Andhra Pradesh India 522502
- Department of ChemistryRaghu Engineering College Visakhapatnam, Andhra Pradesh India
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34
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Dewangan L, Korram J, Karbhal I, Nagwanshi R, Jena VK, Satnami ML. A colorimetric nanoprobe based on enzyme-immobilized silver nanoparticles for the efficient detection of cholesterol. RSC Adv 2019; 9:42085-42095. [PMID: 35542852 PMCID: PMC9076569 DOI: 10.1039/c9ra08328f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 12/05/2019] [Indexed: 12/15/2022] Open
Abstract
A large number of cardiovascular diseases have recently become of serious concern throughout the world. Herein, we developed a colorimetric probe based on functionalized silver nanoparticles (AgNPs) for the efficient sensing of cholesterol, an important cardiovascular risk marker. A simple sodium borohydride reduction method was employed to synthesize the AgNPs. The cholesterol oxidase (ChOx)-immobilized AgNPs interact with free cholesterol to produce H2O2 in proportion to the concentration of cholesterol, resulting in decreased AgNP absorbance (turn-off) at 400 nm due to electron transfer between the AgNPs and H2O2. The response of the sensor can also be observed visually. The absorption intensity of the AgNPs is recovered (turn-on) upon the addition of sodium dodecyl sulfate due to the inhibition of ChOx. This on–off mechanism was effectively applied to detect cholesterol within the concentration range 10–250 nM with a low detection limit of approximately 0.014 nM. Moreover, the selectivity of the sensor toward cholesterol was analyzed in the presence of a range of interfering organic substances such as glucose, urea, and sucrose. Finally, the potential of the proposed sensor was evaluated using real samples. A functionalized silver nanoparticle (AgNP) based colorimetric probe have been developed for efficient sensing of cholesterol, most important cardio-risk-marker.![]()
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Affiliation(s)
- Lakshita Dewangan
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur C.G. India-492010
| | - Jyoti Korram
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur C.G. India-492010
| | - Indrapal Karbhal
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur C.G. India-492010
| | - Rekha Nagwanshi
- Department of Chemistry, Govt. Madhav Science P. G. College Ujjain M.P. India-456010
| | - Vinod K Jena
- Department of Chemistry, Govt. Nagarjuna P. G. College of Science Raipur C.G. India-492010
| | - Manmohan L Satnami
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur C.G. India-492010
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35
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Reactivity and Chemical Sintering of Carey Lea Silver Nanoparticles. NANOMATERIALS 2019; 9:nano9111525. [PMID: 31717758 PMCID: PMC6915523 DOI: 10.3390/nano9111525] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 10/22/2019] [Accepted: 10/24/2019] [Indexed: 11/17/2022]
Abstract
Carey Lea silver hydrosol is a rare example of very concentrated colloidal solutions produced with citrate as only protective ligands, and prospective for a wide range of applications, whose properties have been insufficiently studied up to now. Herein, the reactivity of the immobilized silver nanoparticles toward oxidation, sulfidation, and sintering upon their interaction with hydrogen peroxide, sulfide ions, and chlorocomplexes of Au(III), Pd(II), and Pt(IV) was investigated using SEM and X-ray photoelectron spectroscopy (XPS). The reactions decreased the number of carboxylic groups of the citrate-derived capping and promoted coalescence of 7 nm Ag NPs into about 40 nm ones, excluding the interaction with hydrogen peroxide. The increased nanoparticles form loose submicrometer aggregates in the case of sulfide treatment, raspberry-like micrometer porous particles in the media containing Pd(II) chloride, and densely sintered particles in the reaction with inert H2PtCl6 complexes, probably via the formation of surface Ag-Pt alloys. The exposure of Ag NPs to HAuCl4 solution produced compact Ag films along with nanocrystals of Au metal and minor Ag and AgCl. The results are promising for chemical ambient temperature sintering and rendering silver-based nanomaterials, for example, for flexible electronics, catalysis, and other applications.
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36
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Su DY, Hsu CC, Lai WH, Tsai FY. Fabrication, Mechanisms, and Properties of High-Performance Flexible Transparent Conductive Gas-Barrier Films Based on Ag Nanowires and Atomic Layer Deposition. ACS APPLIED MATERIALS & INTERFACES 2019; 11:34212-34221. [PMID: 31465192 DOI: 10.1021/acsami.9b09772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Thin films of Ag nanowires (NWs) offer many advantages as transparent electrodes for flexible electronics, but their applications are hindered by issues including poor stability/durability of Ag NWs, high processing temperatures, heterogeneity of surfaces, and lack of gas-barrier function. This study reports novel mechanisms through which a conductive Hf:ZnO (HZO) film by atomic layer deposition (ALD) can be integrated with a sprayed Ag NWs film to address the issues of Ag NWs. First, the ALD surface reactions can induce fusing of the Ag NWs into a connected network without the need for a thermal sintering process. Second, the ALD process can in situ functionalize the Ag NWs to yield defect-free (in terms of blocking gas permeation) coverage of the ALD HZO over the entire nanowire surfaces, which also enhances the ALD-induced fusing of Ag NWs. The composite HZO/Ag NWs films exhibit low sheet resistance (15 Ω sq-1), low water vapor transmission rate (WVTR) (5.1 × 10-6 g m-2 day-1), high optical transmission (92%), excellent flexibility (12.5 mm bending radius), high stability/durability (against an extensive set of degradation modes and photolithographic patterning processes), and low processing temperature (90 °C) and can be used in perovskite solar cells to obtain high power conversion efficiency (14.46%).
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Affiliation(s)
- Dung-Yue Su
- Department of Materials Science and Engineering , National Taiwan University , Taipei 10617 , Taiwan
| | - Che-Chen Hsu
- Department of Materials Science and Engineering , National Taiwan University , Taipei 10617 , Taiwan
| | - Wen-Hsuan Lai
- Department of Materials Science and Engineering , National Taiwan University , Taipei 10617 , Taiwan
| | - Feng-Yu Tsai
- Department of Materials Science and Engineering , National Taiwan University , Taipei 10617 , Taiwan
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37
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Significant contribution of metastable particulate organic matter to natural formation of silver nanoparticles in soils. Nat Commun 2019; 10:3775. [PMID: 31434884 PMCID: PMC6704160 DOI: 10.1038/s41467-019-11643-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 07/10/2019] [Indexed: 01/05/2023] Open
Abstract
Particulate organic matter (POM) is distributed worldwide in high abundance. Although insoluble, it could serve as a redox mediator for microbial reductive dehalogenation and mineral transformation. Quantitative information on the role of POM in the natural occurrence of silver nanoparticles (AgNPs) is lacking, but is needed to re-evaluate the sources of AgNPs in soils, which are commonly considered to derive from anthropogenic inputs. Here we demonstrate that POM reduces silver ions to AgNPs under solar irradiation, by producing superoxide radicals from phenol-like groups. The contribution of POM to the naturally occurring AgNPs is estimated to be 11-31%. By providing fresh insight into the sources of AgNPs in soils, our study facilitates unbiased assessments of the fate and impacts of anthropogenic AgNPs. Moreover, the reducing role of POM is likely widespread within surface environments and is expected to significantly influence the biogeochemical cycling of Ag and other contaminants that are reactive towards phenol-like groups.
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38
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Alkawareek MY, Bahlool A, Abulateefeh SR, Alkilany AM. Synergistic antibacterial activity of silver nanoparticles and hydrogen peroxide. PLoS One 2019; 14:e0220575. [PMID: 31393906 PMCID: PMC6687290 DOI: 10.1371/journal.pone.0220575] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 07/18/2019] [Indexed: 12/17/2022] Open
Abstract
The increasing challenge of antibiotic resistance requires not only the discovery of new antibiotics, but also the development of new alternative approaches. Herein, the synergistic antibacterial activity of silver nanoparticles and hydrogen peroxide combination is reported. Unlike the bacteriostatic or slightly bactericidal activity achieved by using each agent alone, using these two agents in combination, even at relatively low concentrations, resulted in complete eradication of both the Gram negative Escherichia coli and the Gram positive Staphylococcus aureus in short treatment times indicating a clear synergistic effect between them. Modifying the surface chemistry of silver nanoparticles and the accompanied change in their surface charge enabled a further enhancement of such synergistic effect implying the importance of this aspect. Mechanistically, a Fenton-like reaction between silver nanoparticles and hydrogen peroxide is discussed and hypothesized to be the basis of the observed synergy. Achieving such a significant antibacterial activity at low concentrations reduces the potential toxicity of these agents and hence enables their utilization as an alternative antibacterial approach in wider range of applications.
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Affiliation(s)
| | - Ahmad Bahlool
- School of Pharmacy, The University of Jordan, Amman, Jordan
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39
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Šloufová I, Šlouf M, Vlčková B, Gajdošová V, Zedník J, Vohlídal J. Controlled Tuning of the Size of Ag-Hydrosol Nanoparticles by Nonstabilized THF and Detection of Peroxides in THF. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:9831-9840. [PMID: 31266307 DOI: 10.1021/acs.langmuir.9b01449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Surface plasmon extinction (SPE) spectra of plasmonic nanoparticles (NPs) are sensitive indicators of their composition, size, shape, interparticle interactions, and of the dielectric constant of their ambient. In this study, rapid changes in SPE spectra of Ag NPs suggesting variations in NP size and concentration were detected after addition of aged tetrahydrofuran (THF). Using time-dependent UV/vis spectroscopy combined with factor analysis, transmission electron microscopy imaging, selected-area electron diffraction, and energy-dispersive X-ray analysis, we observed that an over-limit amount of aged THF fully dissolved Ag NPs with no plasmon recovery. By contrast, an under-limit amount led to incomplete dissolution of Ag NPs and, after reaching the turnover point, to spontaneous recrystallization on residual Ag nuclei, as demonstrated by the SPE band intensity recovery to the original or even higher values. The newly formed Ag NPs were isometric, and their diameter was dependent on the added amount of THF. Furthermore, both Ag NP dissolution and recrystallization were caused by THF peroxides and their reduction products. Therefore, the dissolution of Ag NPs and the resulting hydrosol bleaching may be used as an indicator of the presence of peroxides in THF. Moreover, the reaction of aged THF with Ag NPs can be employed as a tool for tuning the size of Ag NPs in hydrosols.
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Affiliation(s)
- Ivana Šloufová
- Department of Physical and Macromolecular Chemistry, Faculty of Science , Charles University , Hlavova 2030 , 128 40 Prague 2 , Czech Republic
| | - Miroslav Šlouf
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovskeho nam. 2 , 162 06 Prague 6 , Czech Republic
| | - Blanka Vlčková
- Department of Physical and Macromolecular Chemistry, Faculty of Science , Charles University , Hlavova 2030 , 128 40 Prague 2 , Czech Republic
| | - Veronika Gajdošová
- Department of Physical and Macromolecular Chemistry, Faculty of Science , Charles University , Hlavova 2030 , 128 40 Prague 2 , Czech Republic
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovskeho nam. 2 , 162 06 Prague 6 , Czech Republic
| | - Jiří Zedník
- Department of Physical and Macromolecular Chemistry, Faculty of Science , Charles University , Hlavova 2030 , 128 40 Prague 2 , Czech Republic
| | - Jiří Vohlídal
- Department of Physical and Macromolecular Chemistry, Faculty of Science , Charles University , Hlavova 2030 , 128 40 Prague 2 , Czech Republic
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Glucose Sensor Using Redox Active Oligonucleotide-Templated Silver Nanoclusters. NANOMATERIALS 2019; 9:nano9081065. [PMID: 31344954 PMCID: PMC6722757 DOI: 10.3390/nano9081065] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 07/22/2019] [Accepted: 07/22/2019] [Indexed: 01/16/2023]
Abstract
Redox active, photoluminescent silver nanoclusters templated with oligonucleotides were developed for glucose sensing. The silver nanoclusters had a photoluminescent emission at 610 nm that reversibly changed to 530 nm upon oxidation. The reversible emission change was measured with photoluminescent spectroscopy and used to detect H2O2, which is a by-product of the reaction of glucose with glucose oxidase. The ratio of the un-oxidised emission peak (610 nm) and the oxidised analogue (530 nm) was used to measure glucose concentrations up to 20 mM, well within glucose levels found in blood. Also, the reversibility of this system enables the silver nanoclusters to be reused.
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Rong H, Garg S, Waite TD. Impact of light and Suwanee River Fulvic Acid on O 2 and H 2O 2 Mediated Oxidation of Silver Nanoparticles in Simulated Natural Waters. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:6688-6698. [PMID: 31090416 DOI: 10.1021/acs.est.8b07079] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, we investigate the impact of natural organic matter (NOM) and light on silver nanoparticle (AgNP) dissolution kinetics with particular emphasis on determining the (i) mechanism via which NOM affects the oxidative dissolution of AgNPs, (ii) the role of photogenerated organic radicals and reactive oxygen species (ROS) in oxidative dissolution of AgNPs, and (iii) the mechanism of formation of AgNPs in NOM solution under dark and irradiated conditions. We measured the oxidation of citrate stabilized AgNPs by O2 and hydrogen peroxide (H2O2) in the dark and in irradiated Suwannee River fulvic acid (SRFA) solutions at pH 8.0. Results show that the reactivity of AgNPs toward O2 and H2O2 in the dark decreased in the presence of SRFA as a result of blocking of AgNP surface sites through either steric or electrostatic effects. Irradiation promoted dissolution of AgNPs by O2 and H2O2 in the presence of low concentrations (≤20 mg·L-1) of SRFA as a result of contribution from photogenerated H2O2 formed on irradiation of SRFA as well as photofragmentation of AgNPs. Furthermore, our results show that photogenerated superoxide can induce formation of AgNPs by reducing Ag(I) ions. Based on our experimental results, we have developed a kinetic model to explain AgNP transformation by O2 and H2O2 in the dark and in irradiated SRFA solutions with this model of use in predicting the transformation and fate of AgNPs in natural waters.
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Affiliation(s)
- Hongyan Rong
- UNSW Water Research Center, School of Civil and Environmental Engineering , The University of New South Wales , Sydney , New South Wales NSW 2052 , Australia
| | - Shikha Garg
- UNSW Water Research Center, School of Civil and Environmental Engineering , The University of New South Wales , Sydney , New South Wales NSW 2052 , Australia
| | - T David Waite
- UNSW Water Research Center, School of Civil and Environmental Engineering , The University of New South Wales , Sydney , New South Wales NSW 2052 , Australia
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Liu SG, Mo S, Han L, Li N, Fan YZ, Li NB, Luo HQ. Oxidation etching induced dual-signal response of carbon dots/silver nanoparticles system for ratiometric optical sensing of H2O2 and H2O2-related bioanalysis. Anal Chim Acta 2019; 1055:81-89. [DOI: 10.1016/j.aca.2018.12.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 12/08/2018] [Indexed: 11/16/2022]
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Zhang X, Chen L, Lim KH, Gonuguntla S, Lim KW, Pranantyo D, Yong WP, Yam WJT, Low Z, Teo WJ, Nien HP, Loh QW, Soh S. The Pathway to Intelligence: Using Stimuli-Responsive Materials as Building Blocks for Constructing Smart and Functional Systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1804540. [PMID: 30624820 DOI: 10.1002/adma.201804540] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 10/09/2018] [Indexed: 05/22/2023]
Abstract
Systems that are intelligent have the ability to sense their surroundings, analyze, and respond accordingly. In nature, many biological systems are considered intelligent (e.g., humans, animals, and cells). For man-made systems, artificial intelligence is achieved by massively sophisticated electronic machines (e.g., computers and robots operated by advanced algorithms). On the other hand, freestanding materials (i.e., not tethered to a power supply) are usually passive and static. Hence, herein, the question is asked: can materials be fabricated so that they are intelligent? One promising approach is to use stimuli-responsive materials; these "smart" materials use the energy supplied by a stimulus available from the surrounding for performing a corresponding action. After decades of research, many interesting stimuli-responsive materials that can sense and perform smart functions have been developed. Classes of functions discussed include practical functions (e.g., targeting and motion), regulatory functions (e.g., self-regulation and amplification), and analytical processing functions (e.g., memory and computing). The pathway toward creating truly intelligent materials can involve incorporating a combination of these different types of functions into a single integrated system by using stimuli-responsive materials as the basic building blocks.
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Affiliation(s)
- Xuan Zhang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Linfeng Chen
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Kang Hui Lim
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Spandhana Gonuguntla
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Kang Wen Lim
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Dicky Pranantyo
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Wai Pong Yong
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Wei Jian Tyler Yam
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Zhida Low
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Wee Joon Teo
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Hao Ping Nien
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Qiao Wen Loh
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Siowling Soh
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
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Yuan B, Sui M, Qin J, Wang J, Lu H. Effect of bicarbonate on physiochemical properties of silver nanoparticles and toxicity to Escherichia coli. J Colloid Interface Sci 2019; 539:297-305. [DOI: 10.1016/j.jcis.2018.12.057] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/28/2018] [Accepted: 12/14/2018] [Indexed: 11/29/2022]
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Enhanced colorimetric detection of norovirus using in-situ growth of Ag shell on Au NPs. Biosens Bioelectron 2019; 126:425-432. [DOI: 10.1016/j.bios.2018.10.067] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 10/21/2018] [Accepted: 10/30/2018] [Indexed: 11/20/2022]
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Chen C, Huang Y. Carbonaceous nanomaterial-initiated reductive transformation of silver ions in the aqueous environment under sunlight. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 644:315-323. [PMID: 29981979 DOI: 10.1016/j.scitotenv.2018.06.246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 05/22/2018] [Accepted: 06/20/2018] [Indexed: 06/08/2023]
Abstract
The aquatic systems are among the major sinks for discharged substances, and these substances will likely associate with each other. The present work, therefore, aims to study the transformation of metal ions to nanoparticles by discharged carbonaceous materials of emerging concern (e.g., carbon nanotubes (CNTs)) coexisting in the aqueous environment. Here we undertook a systematic study of the reduction of silver ions by CNT suspensions under sunlight irradiation. The formation rate of silver nanoparticles (AgNPs) is suppressed by an increasing amount of dissolved oxygen or strong solution acidity, as well as the presence of other cations. The photoreduction of Ag+ by CNTs involves a charge transfer process between Ag+ and the CNTs. The way in which carbonaceous nanomaterial properties influence the formation kinetics, size, and morphology of the AgNPs was examined. An enhanced sunlight-driven formation of AgNPs with highly monodispersity was observed in CNTs with nitrogen-containing functional groups due to their active electrochemical and stabilizing nature. The compiled results reveal the importance of an understanding of not only the inherent environmental behaviors of individual substances but also their interactions with concurrent substances in the environment. We demonstrated that the transformation of silver under sunlight by carbonaceous materials with different characteristics could alter the properties and potential risks of metallic species in aquatic environments.
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Affiliation(s)
- Chiaying Chen
- Department of Environmental Engineering, National Chung Hsing University, Taichung City 402, Taiwan.
| | - Yu Huang
- Department of Environmental Engineering, National Chung Hsing University, Taichung City 402, Taiwan
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Guo Z, Cui K, Zeng G, Wang J, Guo X. Silver nanomaterials in the natural environment: An overview of their biosynthesis and kinetic behavior. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 643:1325-1336. [PMID: 30189549 DOI: 10.1016/j.scitotenv.2018.06.302] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/21/2018] [Accepted: 06/24/2018] [Indexed: 06/08/2023]
Abstract
Silver nanomaterials (Ag NMs) are fabricated by many biological components in our environment. Recently, research on their biosynthesis and reactions has become a focus of attention. Due to the complexity of biological systems and samples, specific processes and mechanisms involving Ag NMs are difficult to identify and elucidate on the molecular and chemical-bond level. The microorganisms and composite components of plant extracts are of great interest in many biological syntheses. Although potential biomolecules have been shown to play essential roles in biological systems in Ag NM biosynthesis, the detailed mechanism of the electron transfer process and crucial molecules that control this reaction have only recently come into focus. The reactive behavior of the Ag NMs is of great significance for understanding their overall behavior and toxicity. Additionally, only limited knowledge is available about their kinetics. All reactions involve chemical bond formation, electron transfer, or electrostatic interactions. An overview is presented of the biosynthesis of Ag NMs based on molecular supports including a nitrate reductase/NADH oxidase-involved electron transfer reaction and their mechanisms in Ag+ reduction: quinol-mediated mechanism and superoxide-dependent mechanism, and molecular supports in plant extracts, is presented. The environmental reaction kinetics and mechanisms of the interactions of Ag NMs with substances are introduced based on the formation and classification of chemical bonds. The particle-particle reaction kinetics of Ag NMs in the environment are discussed to directly explain their stability and aggregation behavior. The toxicity of Ag NMs is also presented. In addition, future prospects are summarized. This review is the first to provide an insight into the mediating molecules and chemical bonds involved in the biosynthesis, kinetics, and mechanisms of action of Ag NMs.
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Affiliation(s)
- Zhi Guo
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, PR China.
| | - Kangping Cui
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, PR China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Jiajia Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Xingpan Guo
- Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographical Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
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Rong H, Garg S, Waite TD. Transformation of AgCl Particles under Conditions Typical of Natural Waters: Implications for Oxidant Generation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:11621-11631. [PMID: 30227709 DOI: 10.1021/acs.est.8b02902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The engineered silver nanoparticles (AgNPs) used in consumer products are ultimately released to the environment either as Ag(0), silver sulfide (Ag2S(s)), silver chloride (AgCl(s)), and/or dissolved Ag(I) complexes. Of these, AgCl(s) and Ag2S(s) exhibit semiconducting properties and hence may have significant implications to oxidant generation and subsequent redox transformations in natural waters. In this work, we investigate the transformation and photoreactivity of AgCl(s) under simulated natural water conditions with the photoreactivity probed by measuring the oxidation of formate (HCOO-), a simple compound with a well-defined oxidation pathway. Our results show that AgCl(s) undergoes rapid dissolution in the presence of chloride concentrations representative of seawater (ca. 0.5 M NaCl) forming dissolved Ag(I) complexes but is stable in fresh waters and slightly brackish waters (≤200 mM NaCl). We further show that under these lower salinity conditions in which AgCl(s) is stable, pH has a significant impact on the reactivity of semiconducting AgCl(s). The photoreactivity (measured as initial HCOO- oxidation rate) of AgCl(s) is relatively constant at pH 4.0 for periods of 24 h or more; however, it decreases rapidly under alkaline conditions. The rapid transformation (or "aging") of AgCl(s) under alkaline conditions suggests that AgCl(s), potentially transported through wastewater effluent to fresh or brackish water environments, may not have a significant impact in such environments. In comparison, in situ formed AgCl(s), potentially formed as a result of the oxidation of high concentrations (≥60 μg Ag·L-1) of Ag(0) and/or Ag2S(s), may have significant implications to oxidant generation in natural waters. Our results further show that rapid cycling of Ag between the 0 and +I redox states in sunlit surface waters as a result of the presence of AgNP oxidants (such as H2O2 and organic radicals) will further enhance the rate and extent of oxidant generation by AgCl(s).
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Affiliation(s)
- Hongyan Rong
- UNSW Water Research Center, School of Civil and Environmental Engineering , The University of New South Wales , Sydney , New South Wales 2052 , Australia
| | - Shikha Garg
- UNSW Water Research Center, School of Civil and Environmental Engineering , The University of New South Wales , Sydney , New South Wales 2052 , Australia
| | - T David Waite
- UNSW Water Research Center, School of Civil and Environmental Engineering , The University of New South Wales , Sydney , New South Wales 2052 , Australia
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Lipani L, Dupont BGR, Doungmene F, Marken F, Tyrrell RM, Guy RH, Ilie A. Non-invasive, transdermal, path-selective and specific glucose monitoring via a graphene-based platform. NATURE NANOTECHNOLOGY 2018; 13:504-511. [PMID: 29632401 DOI: 10.1038/s41565-018-0112-4] [Citation(s) in RCA: 160] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 03/06/2018] [Indexed: 05/22/2023]
Abstract
Currently, there is no available needle-free approach for diabetics to monitor glucose levels in the interstitial fluid. Here, we report a path-selective, non-invasive, transdermal glucose monitoring system based on a miniaturized pixel array platform (realized either by graphene-based thin-film technology, or screen-printing). The system samples glucose from the interstitial fluid via electroosmotic extraction through individual, privileged, follicular pathways in the skin, accessible via the pixels of the array. A proof of principle using mammalian skin ex vivo is demonstrated for specific and 'quantized' glucose extraction/detection via follicular pathways, and across the hypo- to hyper-glycaemic range in humans. Furthermore, the quantification of follicular and non-follicular glucose extraction fluxes is clearly shown. In vivo continuous monitoring of interstitial fluid-borne glucose with the pixel array was able to track blood sugar in healthy human subjects. This approach paves the way to clinically relevant glucose detection in diabetics without the need for invasive, finger-stick blood sampling.
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Affiliation(s)
- Luca Lipani
- Department of Physics, University of Bath, Bath, UK
- Department of Pharmacy & Pharmacology, University of Bath, Bath, UK
- Centre for Graphene Science, University of Bath, Bath, UK
- Centre for Nanoscience & Nanotechnology, University of Bath, Bath, UK
| | - Bertrand G R Dupont
- Department of Physics, University of Bath, Bath, UK
- Department of Pharmacy & Pharmacology, University of Bath, Bath, UK
- Centre for Graphene Science, University of Bath, Bath, UK
| | - Floriant Doungmene
- Department of Physics, University of Bath, Bath, UK
- Centre for Graphene Science, University of Bath, Bath, UK
| | - Frank Marken
- Centre for Nanoscience & Nanotechnology, University of Bath, Bath, UK
- Department of Chemistry, University of Bath, Bath, UK
| | - Rex M Tyrrell
- Department of Pharmacy & Pharmacology, University of Bath, Bath, UK
| | - Richard H Guy
- Department of Pharmacy & Pharmacology, University of Bath, Bath, UK
- Centre for Graphene Science, University of Bath, Bath, UK
- Centre for Nanoscience & Nanotechnology, University of Bath, Bath, UK
| | - Adelina Ilie
- Department of Physics, University of Bath, Bath, UK.
- Centre for Graphene Science, University of Bath, Bath, UK.
- Centre for Nanoscience & Nanotechnology, University of Bath, Bath, UK.
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