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Soltani-Shahrivar M, Afkhami A, Madrakian T. Design and optimization of a cost-effective paper-based voltammetric sensor for the determination of trinitrotoluene (TNT) utilizing cysteamine-linked Fe 3O 4 @Au nanocomposite. Talanta 2024; 274:126041. [PMID: 38581854 DOI: 10.1016/j.talanta.2024.126041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 03/27/2024] [Accepted: 04/02/2024] [Indexed: 04/08/2024]
Abstract
This paper presents the development and optimization of a cost-effective paper electrochemical sensor for the detection of TNT using Fe3O4-Au core-shell nanoparticles modified with cysteamine (Fe3O4@Au/CA). The sensor was constructed by modifying a graphite paste with the aforementioned nanoparticles, which facilitated the formation of a Meisenheimer complex between cysteamine and TNT as an electron donor and an electron acceptor, respectively. The central composite design was employed to optimize four key parameters pH, modifier percentage, contact time, and buffer type to enhance the performance of the sensor. The detection limit was found to be 0.5 nM of TNT, while the linear range of the electrode response spanned from 0.002 μM to 10 μM. The simplicity and low cost of the sensor make it highly attractive for practical applications, particularly in scenarios where rapid and on-site TNT detection is required.
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Affiliation(s)
- Morteza Soltani-Shahrivar
- Department of Analytical Chemistry, Faculty of Chemistry and Petroleum Science, Bu-Ali Sina University, Hamedan, Iran
| | - Abbas Afkhami
- Department of Analytical Chemistry, Faculty of Chemistry and Petroleum Science, Bu-Ali Sina University, Hamedan, Iran; D-8 International University, Hamedan, Iran.
| | - Tayyebeh Madrakian
- Department of Analytical Chemistry, Faculty of Chemistry and Petroleum Science, Bu-Ali Sina University, Hamedan, Iran.
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2
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Appiah-Ntiamoah R, Kim H. Leveraging Direct Pyrolysis for the Synthesis of 10 nm Monodispersed Fe 3O 4/Fe 3C NPS@Carbon to Improve SupercapacitANCE in Acidic Electrolyte. CHEMSUSCHEM 2024:e202400085. [PMID: 38511252 DOI: 10.1002/cssc.202400085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/11/2024] [Accepted: 03/20/2024] [Indexed: 03/22/2024]
Abstract
The prevailing practice advocates pre-oxidation of electrospun Fe-salt/polymer nanofibers (Fe-salt/polymer Nf) before pyrolysis as advantageous in the production of high-performance FeOx@carbon nanofibers supercapacitors (FeOx@C). However, our study systematically challenges this notion by demonstrating that pre-oxidation facilitates the formation of polydispersed and large FeOx nanoparticles (FeOx@CI-DA) through "external" Fe3+ Kirkendall diffusion from carbon, resulting in subpar electrochemical properties. To address this, direct pyrolysis of Fe-salt/polymer Nf is proposed, promoting "internal" Fe3+ Kirkendall diffusion within carbon and providing substantial physical confinement, leading to the formation of monodispersed and small FeOx nanoparticles (FeOx@CDA). In 1 M H2SO4, FeOx@CDA demonstrates ~2.60× and 1.26× faster SO4 2- diffusivity, and electron transfer kinetics, respectively, compared to FeOx@CI-DA, with a correspondingly ~1.50× greater effective surface area. Consequently, FeOx@CDA exhibits a specific capacity of 161.92 mAhg-1, ~2× higher than FeOx@CI-DA, with a rate capability ~19 % greater. Moreover, FeOx@CDA retains 94 % of its capacitance after 5000 GCD cycles, delivering an energy density of 26.68 Whkg-1 in a FeOx@CDA//FeOx@CDA device, rivaling state-of-the-art FeOx/carbon electrodes in less Fe-corrosive electrolytes. However, it is worth noting that the effectiveness of direct pyrolysis is contingent upon hydrated Fe-salt. These findings reveal a straightforward approach to enhancing the supercapacitance of FeOx@C materials.
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Affiliation(s)
- Richard Appiah-Ntiamoah
- Department of Energy Science and Technology, Environmental Waste Recycle Institute, Myongji University, Yongin, Gyeonggi-do, 17058, Republic of Korea, and
| | - Hern Kim
- Department of Energy Science and Technology, Environmental Waste Recycle Institute, Myongji University, Yongin, Gyeonggi-do, 17058, Republic of Korea, and
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3
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Park OK, Kim NH, Lee JH. Single-step fabrication of surface morphology tuned iron oxide anchored highly porous carbon nanotube hybrid foam for a highly stable supercapacitor electrode. J Colloid Interface Sci 2023; 641:479-491. [PMID: 36948103 DOI: 10.1016/j.jcis.2023.03.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 03/09/2023] [Accepted: 03/13/2023] [Indexed: 03/18/2023]
Abstract
The pseudocapacitive metal oxide anchored nanocarbon-based three-dimensional (3D) materials are considered attractive electrode materials for high-performance supercapacitor applications. However, the complex multistep synthesis approaches raise production costs and act as a major barrier to the practical real-world field. To overcome this limitation, in this study, an easily scalable and effective fabrication approach for the development of iron oxide (Fe3O4) anchored highly porous carbon nanotube hybrid foam (f-Fe3O4/O-CNTF) with micro/mesoporous structure was suggested to improve the durability and energy storage performance. The surface morphology-tuned f-Fe3O4/O-CNTF (f-Fe3O4/O-CNTF(M)) was fabricated through electromagnetic interaction between the anchored magnetic Fe3O4 on the CNT surface and the applied magnetic field. The obtained results clearly demonstrated that the changed surface morphology of the f-Fe3O4/O-CNTF(M) strongly affected the meso- and micropore structure, electrochemical performance, and durability. Consequently, the f-Fe3O4/O-CNTF(M) showed an almost 120% enhanced specific surface area and nearly 1.9 times increased specific capacitance compared to that of the f-Fe3O4/O-CNTF. Furthermore, the changed surface morphology successfully prevented the re-aggregation of the initial structure and significantly improved durability. As a result, f-Fe3O4/O-CNTF(M) showed outstanding cycling stability, maintaining almost 100% capacitance retention after 14,000 cycles. Consequently, the assembled symmetric supercapacitor device delivered an energy density of 20.1 Wh·kg-1 at a power density of 0.37 kW·kg-1 with good cycling stability. These results suggest that the f-Fe3O4/O-CNTF(M) can potentially be used as an electrode for supercapacitors with good durability.
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Affiliation(s)
- Ok-Kyung Park
- Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Jeonbuk 54896, Republic of Korea
| | - Nam Hoon Kim
- Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Jeonbuk 54896, Republic of Korea
| | - Joong Hee Lee
- Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Jeonbuk 54896, Republic of Korea; Carbon Composite Research Center, Department of Polymer-Nano Science and Technology, Jeonbuk National University, Jeonju, Jeonbuk 54896, Republic of Korea.
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4
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Zhou H, Ji S, Zhang Q, Jin W, Feng A, Lin C, Li Q. Wastewater treatment: A universal, scalable and recyclable catalyst with adjustable activity for diverse dyes degradation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 330:117188. [PMID: 36603262 DOI: 10.1016/j.jenvman.2022.117188] [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: 10/06/2022] [Revised: 12/22/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
The growing concern over water shortage and pollution is propelling and accelerating the development of sewage treatment technologies. Among them, the catalytic hydrogenation method is highly recommended from a sustainable perspective, because it can turn toxic pollutants into valuable raw materials. The catalyst with excellent activity and stability plays a critical role in this "trash to treasure" approach. Herein, we proposed a novel economical, scalable and recyclable candidate catalyst, i.e., the copper nanoparticles supported on zinc oxide nanowire array (Cu-ZnO NWA), for realizing efficient and stable dye wastewater treatment. The salix argyracea-shaped Cu-ZnO NWA displays very outstanding universality and controllability towards the catalytic hydrogenation reactions of diverse dyes, owing to the fact that ZnO nanowire array not only offers a platform to realize stable and homogeneous dispersion of Cu nanoparticles, but also provides a large quantity of catalytically active sites. More attractively, its synthetic method can be facilely extended to various conductive substrates through combined electrodeposition and hydrothermal technique, showing its general applicability for the surface assembly of sewage treatment facilities. Benefiting from above advantages, this proposal offers an attractive approach for large-scale and continuous decolorization of dye wastewater, and presents a broad application prospect in the textile printing industry.
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Affiliation(s)
- Huiqin Zhou
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China
| | - Shanshan Ji
- Department of Biological and Chemical Engineering, Jining Polytechnic, Jining, 272037, China
| | - Qinqin Zhang
- College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China.
| | - Weihong Jin
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China.
| | - Anlin Feng
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China
| | - Chaoyu Lin
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China
| | - Qingyang Li
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China.
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5
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Preparation of Reduced-Graphene-Oxide-Supported CoPt and Ag Nanoparticles for the Catalytic Reduction of 4-Nitrophenol. Catalysts 2021. [DOI: 10.3390/catal11111336] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Composite nanostructure materials are widely used in catalysis. They exhibit several characteristics, such as the unique structural advantage and the synergism among their components, which significantly enhances their catalytic performance. In this work, CoPt nanoparticles and reduced-graphene-oxide-based nanocomposite catalysts (rGO/CoPt, rGO/CoPt/Ag) were prepared by using a facile co-reduction strategy. The crystalline structure, morphology, composition, and optical characteristics of the CoPt nanoparticles, rGO/CoPt nanocomposite, and rGO/CoPt/Ag nanocomposite catalysts were investigated by a set of techniques. The ID/IG value of the rGO/CoPt/Ag nanocomposite is 1.158, higher than that of rGO/CoPt (1.042). The kinetic apparent rate constant, k, of the rGO/CoPt/Ag nanocomposite against 4-nitrophenol (4-NP) reduction is 5.306 min−1, which is higher than that of CoPt (0.495 min−1) and rGO/CoPt (1.283 min−1). The normalized rate constant, knor, of the rGO/CoPt/Ag nanocomposite is 56.76 min−1mg−1, which is higher than some other catalytic materials. The rGO/CoPt/Ag nanocomposite shows a significantly enhanced catalytic performance when compared to CoPt nanoparticles and the rGO/CoPt nanocomposite, which may confirm that the novel rGO/CoPt/Ag nanocomposite is a promising catalyst for the application of catalytic fields.
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6
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Chatterjee S, Bhattacharya SK. Size-Dependent Catalytic Activity of PVA-Stabilized Palladium Nanoparticles in p-Nitrophenol Reduction: Using a Thermoresponsive Nanoreactor. ACS OMEGA 2021; 6:20746-20757. [PMID: 34423183 PMCID: PMC8374901 DOI: 10.1021/acsomega.1c00896] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 05/31/2021] [Indexed: 06/13/2023]
Abstract
Palladium nanoparticles (Pd NPs) of various average global diameters (2.1-7.1 nm) encapsulated with hydrophilic polymer polyvinyl alcohol (PVA) have been synthesized and used as catalysts for sodium borohydride assisted reduction of p-nitrophenol to p-aminophenol. The synthesized catalysts exhibit excellent and typical size-dependent catalytic activity in the green protocol. UV-visible absorption spectroscopy, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy were employed to characterize the prepared Pd NPs. The kinetics of this reaction was easily monitored by a UV-visible absorption spectrophotometer. The mechanism of the reaction is explained by the Langmuir-Hinshelwood model. The catalytic performance increases with decreasing size of the synthesized nanoparticles. The apparent rate constants (k app × 103/s-1) of the catalytic reduction in the presence of Pd NPs of average diameters of 2.1, 3.35, 6.2, and 7.1 nm are determined as 8.57, 7.67, 6.16, and 5.04, respectively, at 298 K by using 2.91 mol % palladium nanocatalyst in each case. Moreover, the estimated activation energy of 22.2 kJ mol-1 obtained for Pd NPs with the smallest average diameter of 2.1 nm is very low as reported in the literature for the reduction. The influences of catalyst dose and concentration of p-nitrophenol on catalytic reduction are fully investigated. The catalyst with the largest diameter shows a temperature-sensitive property that might be due to the presence of a very low amount of rapped PVA used as stabilizer during the fabrication process. Thus, the synthetic protocol provides a unique fabrication process of a catalytically active thermoresponsive nanoreactor consisting of Pd NPs encapsulated into a PVA stabilizing agent.
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Affiliation(s)
- Sujit Chatterjee
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
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7
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Zhang F, Shen L, Li J, Zhang Y, Wang G, Zhu A. Room temperature photocatalytic deposition of Au nanoparticles on SnS2 nanoplates for enhanced photocatalysis. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.01.065] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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8
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Liu R, Liu S, Ding H, Zhao D, Fu J, Zhang Y, Huo W, Li G“K. Unveiling the Role of Atomically Dispersed Active Sites over Amorphous Iron Oxide Supported Pt Catalysts for Complete Catalytic Ozonation of Toluene at Low Temperature. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rui Liu
- School of Environmental Science & Engineering, Tianjin University, Jinnan District, Tianjin, 300350, China
| | - Shejiang Liu
- School of Environmental Science & Engineering, Tianjin University, Jinnan District, Tianjin, 300350, China
| | - Hui Ding
- School of Environmental Science & Engineering, Tianjin University, Jinnan District, Tianjin, 300350, China
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Dan Zhao
- School of Environmental Science & Engineering, Tianjin University, Jinnan District, Tianjin, 300350, China
| | - Jianfeng Fu
- School of Environmental Science & Engineering, Tianjin University, Jinnan District, Tianjin, 300350, China
| | - Yuxin Zhang
- State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Wangchen Huo
- State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Gang “Kevin” Li
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Melbourne, Victoria 3010, Australia
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9
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Chandekar KV, Shkir M, Alshahrani T, Ibrahim EH, Kilany M, Ahmad Z, Manthrammel MA, AlFaify S, Kateb B, Kaushik A. One-spot fabrication and in-vivo toxicity evaluation of core-shell magnetic nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 122:111898. [PMID: 33641901 DOI: 10.1016/j.msec.2021.111898] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 12/01/2020] [Accepted: 01/17/2021] [Indexed: 12/17/2022]
Abstract
This research, for the first time, report the synthesis of core-shell magnetic nanoparticles (NPs) consisting poly acrylic acid (PAA) coated cobalt ferrite (CF) using a simple co-precipitation route. Nanocrystalline PAA@CF-NPs, particle size of 9.2 nm, exhibited saturation magnetization as 28.9 emu/g, remnant magnetization as 8.37 emu/g, and coercivity as 543 Oe. Keeping biomedical applications into consideration, PAA@CF-NPs were further analysed to evaluate antimicrobial performance against Gram positive (Staphylococcus aureus and Bacillus subtilis) and Gram negative (Pseudomonas aeruginosa and Escherichia coli) bacteria, and biocompatibility with reference to activated splenic cells. The PAA@CF-NPs were viable to the normal splenic cells (up to 1000 μg/ml) and do not affect the ability of fast dividing ability of the cells (activated splenic cells). An optimized dose of PAA@CF-NPs was intramuscularly administrated (100 μg/ml) into Albino mice to evaluate acute toxicity. The results of these studies suggest that injected PAA@CF-NPs do not affect vital organs mainly including liver and kidneys that confirmed the heptic/renal biocompatibility. The outcomes of this research project such developed nano-system for biomedical applications, mainly for magnetically guided drug delivery and image guided therapies development. However, to support the proposed claims, extended in-vivo studies are required to explore bio-distribution, chronic toxicity, and homeostatic conditions.
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Affiliation(s)
- Kamlesh V Chandekar
- Department of Physics, Rayat Shikshan Sanstha's, Karmaveer Bhaurao Patil College, Vashi, Navi Mumbai 400703, Maharashtra, India.
| | - Mohd Shkir
- Advanced Functional Materials and Optoelectronics Laboratory (AFMOL), Department of Physics, College of Science, King Khalid University, Abha 61413, Saudi Arabia.
| | - Thamraa Alshahrani
- Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia.
| | - Essam H Ibrahim
- Biology Department, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Research Centre for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Blood Products Quality Control and Research Department, National Organization for Research and Control of Biologicals, Cairo 12611, Egypt
| | - Mona Kilany
- Research Centre for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Department of Microbiology, National Organization for Drug Control and Research (NODCAR), Cairo 12611, Egypt
| | - Zubair Ahmad
- Research Centre for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Unit of Bee Research and Honey Production, Faculty of Science, King Khalid University, Abha 61413, Saudi Arabia; Biology Department, Faculty of Sciences and Arts, King Khalid University, Dhahran Al Janoub, Saudi Arabia
| | - M Aslam Manthrammel
- Advanced Functional Materials and Optoelectronics Laboratory (AFMOL), Department of Physics, College of Science, King Khalid University, Abha 61413, Saudi Arabia
| | - S AlFaify
- Advanced Functional Materials and Optoelectronics Laboratory (AFMOL), Department of Physics, College of Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Babak Kateb
- National Center for NanoBioElectronics, West Hollywood, CA, USA; California Neurosurgical Institute, Los Angeles, CA, USA; Brain Mapping Foundation, West Hollywood, CA, USA; Society for Brain Mapping and Therapeutics, West Hollywood, CA, USA
| | - Ajeet Kaushik
- NanoBioTech Laboratory, Department of Natural Sciences, Division of Sciences, Art and Mathematics, Florida Polytechnic University, Lakeland, FL 33805, USA.
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Becerril-Castro IB, Munoz-Munoz F, Castro-Ceseña AB, González AL, Alvarez-Puebla RA, Romo-Herrera JM. Plasmonic foam platforms for air quality monitoring. NANOSCALE 2021; 13:1738-1744. [PMID: 33428700 DOI: 10.1039/d0nr07686d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plasmonic reversible gas sensors are of paramount importance for the monitoring of indoor environments. Herein, we design and engineer a plasmonic foam, with a high surface area, confined inside a capillary glass tube for the live monitoring of carbon monoxide (CO) in closed environments using surface-enhanced resonance Raman scattering. The illumination of the sensor with light during the flow of air allows the live monitoring of the concentration of atmospheric CO through surface-enhanced resonance Raman scattering. The sensor was prepared with a detection range from 10 to 40 ppm, due to health needs. The results show a sensitive, selective, reversible and robust sensor applicable to the monitoring of CO levels but also to other gas species upon appropriate functionalization.
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Affiliation(s)
- I Brian Becerril-Castro
- Centro de Nanociencias y Nanotecnología, UNAM, Km 107 Carretera Tijuana-Ensenada, C.P. 22800, Ensenada, B.C., Mexico.
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11
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Wang N, Wang F, Pan F, Yu S, Pan D. Highly Efficient Silver Catalyst Supported by a Spherical Covalent Organic Framework for the Continuous Reduction of 4-Nitrophenol. ACS APPLIED MATERIALS & INTERFACES 2021; 13:3209-3220. [PMID: 33404207 DOI: 10.1021/acsami.0c20444] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Developing new materials and novel technologies for the highly efficient treatment of toxic organic pollutants is highly desirable. Chemical reduction based on heterogeneous substrate/noble metal catalysts and the reducing agent NaBH4 has become an effective method in recent years. Here, a spherical covalent organic framework (SCOF) was designed to provide basic sites for Ag ions, by which small Ag NPs were immobilized on the SCOF to form Ag NPs@SCOF microspheres. The prepared microspheres exhibited a high catalytic reduction ability toward 4-nitrophenol (4-NP). An optimized permeation flux of 2000 L m-2 h-1 (LMH) and a more than 99% 4-NP reduction efficiency were obtained with flow-through experiments, which are far better than the reported results (below 200 LMH). Moreover, the microspheres could maintain stable catalytic performance under a continuous flow-through process. Our work provides an efficient material and technology that can be applied to easily treat toxic organic pollutants.
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Affiliation(s)
- Ning Wang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology of Shandong Province, Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P. R. China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Fushuai Wang
- Yantai University, Yantai, Shandong 264005, P. R. China
| | - Fei Pan
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology of Shandong Province, Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Shunyang Yu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology of Shandong Province, Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Dawei Pan
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology of Shandong Province, Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P. R. China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
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12
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Lai GH, Huang TC, Huang BS, Chou YC. A novel Au/electroactive poly(amic acid) composite as an effective catalyst for p-nitrophenol reduction. RSC Adv 2021; 11:33990-33995. [PMID: 35497293 PMCID: PMC9042354 DOI: 10.1039/d1ra05347g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 09/27/2021] [Indexed: 12/17/2022] Open
Abstract
A Au/electroactive poly(amic acid) (Au/EPAA) composite was synthesized and characterized, and its catalytic ability was evaluated. EPAA was synthesized via oxidative coupling polymerization and Au nanoparticles were anchored to the amino and carboxyl groups. The Au/EPAA composite was characterized via X-ray diffraction analysis, X-ray photoelectron spectroscopy, and scanning electron microscopy, which confirmed that the Au nanoparticles were well dispersed on the EPAA surface. p-Nitrophenol was reduced to p-aminophenol within 5 min at room temperature, with a rate constant of 0.84 min−1. Cycling measurements showed that the Au/EPAA composite achieved higher than 92% conversion. The Au/EPAA composite showed excellent performance and stability as a catalyst for the reduction of p-nitrophenol to p-aminophenol. The Au/EPAA composite demonstrated excellent performance and stability as a catalyst for the reduction of p-nitrophenol to p-aminophenol.![]()
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Affiliation(s)
- Guan-Hui Lai
- Department of Cosmetic Science, Providence University, 43301 Taichung, Taiwan
| | - Tsao-Cheng Huang
- Technical Department Plastics Division, Formosa Plastics Corporation, 814538 Kaohsiung, Taiwan
| | - Bi-Sheng Huang
- Department of Cosmetic Science, Providence University, 43301 Taichung, Taiwan
| | - Yi-Chen Chou
- Department of Cosmetic Science, Providence University, 43301 Taichung, Taiwan
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Abstract
Magnetic Cu/CuFe2O4 nanocomposites were prepared by the one-pot thermal decomposition of acetylacetone compounds. Adjusting the molar ratios of Fe to Cu was used to control the content of Cu in the synthetic process. XRD, TEM, XPS and UV-Vis were employed to reveal detailed structural and catalytic activities of Cu/CuFe2O4 nanocomposites. Magnetic measurements demonstrated that Cu/CuFe2O4 nanocomposites possessed a considerable magnetic saturation. Cu/CuFe2O4 nanocomposites showed superb efficiency in the degradation of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). 4-NP could be reduced by Cu/CuFe2O4 nanocomposites within 40 s in the attendance of NaBH4. Cu nanocrystals played an indispensable rose in the enhancement of catalytic performance. The synergistic effect of Cu and CuFe2O4 nanocrystals achieved the high-efficiency catalytic reduction for 4-NP. After six recycling experiments, the efficiency of Cu/CuFe2O4 nanocomposites was almost stable. Our work advances a straightforward strategy to synthesize efficient and recoverable Cu/CuFe2O4 nanocomposites, which has promising utilizations in the purifying of nitrophenolic contamination.
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14
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Xiong LL, Huang R, Chai HH, Yu L, Li CM. Facile Synthesis of Fe 3O 4@Tannic Acid@Au Nanocomposites as a Catalyst for 4-Nitrophenol and Methylene Blue Removal. ACS OMEGA 2020; 5:20903-20911. [PMID: 32875225 PMCID: PMC7450606 DOI: 10.1021/acsomega.0c02347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 07/31/2020] [Indexed: 05/10/2023]
Abstract
A facile, cost-effective, and eco-friendly method was proposed to synthesize Fe3O4@tannic acid@Au nanocomposites (Fe3O4@TA@Au). First, Fe3O4 nanoparticles with diameters of 20 and 200 nm were synthesized by co-precipitation and solvothermal methods, respectively. Gold nanoparticles were deposited on magnetic Fe3O4 through tannic acid-metal-polymer intermediate-layer-mediated reductions. The catalytic activities of the as-prepared Fe3O4@TA@Au were investigated by spectroscopically monitoring the reduction of 4-nitrophenol (4-NP) and methylene blue (MB), which could be achieved within several minutes with an excess of NaBH4. The impact of the Fe3O4 size on the overall catalytic ability of the Fe3O4@TA@Au was systematically studied. The reaction rate constants of the Fe3O4-20 nm@TA@Au for 4-NP and MB reduction were 0.432 and 0.543 min-1, respectively. For the Fe3O4-200 nm@TA@Au nanocomposite, the optimized reaction rate constants for 4-NP and MB reduction were 3.09 and 0.441 min-1, respectively. Due to magnetic separation, the Fe3O4@TA@Au could be easily harvested and recycled. After five recycling cycles, the catalytic ability remained over 90%, and the recycling process could be completed in several minutes, highlighting its potential as a catalyst for 4-NP and MB removal.
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Affiliation(s)
- Lu Lu Xiong
- Institute
for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, P.R. China
| | - Rong Huang
- Institute
for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, P.R. China
| | - Hui Hui Chai
- Institute
for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, P.R. China
| | - Ling Yu
- Institute
for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, P.R. China
| | - Chang Ming Li
- Institute
for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, P.R. China
- Institute
for Materials Science and Devices, Suzhou
University of Science and Technology, Suzhou 215011, P.R. China
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15
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Li X, Weng C, Wang J, Yang W, Lu Q, Yan X, Sakran MA, Hong J, Zhu W, Zhou X. A label-free electrochemical magnetic aptasensor based on exonuclease III-assisted signal amplification for determination of carcinoembryonic antigen. Mikrochim Acta 2020; 187:492. [PMID: 32770422 DOI: 10.1007/s00604-020-04457-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 07/16/2020] [Indexed: 12/26/2022]
Abstract
A novel label-free and exonuclease III (Exo III)-assisted signal amplification electrochemical aptasensor was constructed for the determination of carcinoembryonic antigen (CEA) via magnetic field-induced self-assembly of magnetic biocomposites (Fe3O4@Au NPs-S1-S2-S3). The magnetic biocomposites were acquired by modifying double-stranded DNA (S1-S2-S3) on the surface of Fe3O4@Au nanoparticles (Fe3O4@Au NPs). Among them, Fe3O4@Au NPs were used as carriers for magnetic separation, thiolated single-stranded DNA (S1) provided signal sequence, CEA aptamer (S2) worked as a recognition element, and complementary strand (S3) was used to form double strands. In the presence of CEA, S2 bonded with CEA competitively; the exposed S1 could not be cleaved since Exo III was inactive against ssDNA. The G-quadruplex/hemin complexes finally formed with the existence of K+, and the high electrochemical signal of G-quadruplex/hemin complexes was recorded by differential pulse voltammetry (DPV) at - 0.6 V. Conversely, in the absence of CEA, dsDNA was cleaved from the 3' blunt end by Exo III; the disappearance of G-rich sequence blocked the generation of the signal. This method exhibited good selectivity and sensitivity for the determination of CEA; the linear range was from 0.1 to 200 ng mL-1 and the limit of detection was 0.4 pg mL-1. Graphical abstract.
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Affiliation(s)
- Xiaoyun Li
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Chenyuan Weng
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Jing Wang
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Wei Yang
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Qiaoyun Lu
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Xiaoqiang Yan
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Marwan Ahmad Sakran
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Junli Hong
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Wanying Zhu
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China.
| | - Xuemin Zhou
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China.
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16
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A green and efficient Pd-free protocol for the Suzuki–Miyaura cross-coupling reaction using Fe3O4@APTMS@Cp2ZrClx(x = 0, 1, 2) MNPs in PEG-400. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04145-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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17
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Wu T, Kou Y, Zheng H, Lu J, Kadasala NR, Yang S, Guo C, Liu Y, Gao M. A Novel Au@Cu 2O-Ag Ternary Nanocomposite with Highly Efficient Catalytic Performance: Towards Rapid Reduction of Methyl Orange Under Dark Condition. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 10:E48. [PMID: 31878173 PMCID: PMC7023264 DOI: 10.3390/nano10010048] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/12/2019] [Accepted: 12/20/2019] [Indexed: 11/16/2022]
Abstract
Au@Cu2O core-shell nanocomposites (NCs) were synthesized by reducing copper nitrate on Au colloids with hydrazine. The thickness of the Cu2O shells could be varied by adjusting the molar ratios of Au: Cu. The results showed that the thickness of Cu2O shells played a crucial role in the catalytic activity of Au@Cu2O NCs under dark condition. The Au@Cu2O-Ag ternary NCs were further prepared by a simple galvanic replacement reaction method. Moreover, the surface features were revealed by TEM, XRD, XPS, and UV-Vis techniques. Compared with Au@Cu2O NCs, the ternary Au@Cu2O-Ag NCs had an excellent catalytic performance. The degradation of methyl orange (MO) catalyzed by Au@Cu2O-Ag NCs was achieved within 4 min. The mechanism study proved that the synergistic effects of Au@Cu2O-Ag NCs and sodium borohydride facilitated the degradation of MO. Hence, the designed Au@Cu2O-Ag NCs with high catalytic efficiency and good stability are expected to be the ideal environmental nanocatalysts for the degradation of dye pollutants in wastewater.
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Affiliation(s)
- Tong Wu
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Yichuan Kou
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Hui Zheng
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Jianing Lu
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | | | - Shuo Yang
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; (S.Y.); (C.G.)
| | - Chenzi Guo
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; (S.Y.); (C.G.)
| | - Yang Liu
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Ming Gao
- College of Physics, Jilin Normal University, Siping 136000, China; (T.W.); (Y.K.); (H.Z.); (J.L.)
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
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