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Selvi SV, Prasannan A, Yu H, Lincy V, Hong PD. Bio-mineralized tin/bismuth oxide nanoparticles with silk fibroins for efficient electrochemical detection of 2-nitroaniline in river water samples. ENVIRONMENTAL RESEARCH 2023; 221:115285. [PMID: 36640938 DOI: 10.1016/j.envres.2023.115285] [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: 11/25/2022] [Revised: 01/06/2023] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
In recent years, the usage of nitroaniline has played a vital role in pharmaceutical formulations as it is a crucial ingredient in the synthesis of pesticides and dyes. However, the level of nitroaniline existing in industrial waste keeps rising the environmental contamination. Thus, monitoring of active nitro-residuals becomes more significant in reducing the toxicity of the ecosystem. Therefore, we have taken an attempt to evaluate the hazardous pollutant 2-nitroaniline (2-NA) using the electrocatalyst viz., tin-doped bismuth oxide inserted on a biopolymer silk fibroin composite modified glassy carbon electrode (Sn-Bi2O3/SF@GCE). The Sn-Bi2O3/SF nanocomposite was synthesized through hydrothermal and co-precipitation methods. The physicochemical properties of the prepared Sn-Bi2O3/SF hybrid composite were examined by conventional microscopy and spectroscopic techniques like FE-SEM, HR-TEM, XRD, FTIR, Raman, and XPS. Furthermore, the bio-mineralized Sn-Bi2O3/SF@GCE displayed a wide linear range (0.009 μM-785.7 μM) and a lower detection limit (3.5 nM) with good sensitivity for 2-NA detection under the optimum conditions. The result shows that the Sn-Bi2O3/SF-modified GCE has good reproducibility, repeatability, and excellent selectivity for 2-NA detection in the presence of other co-interfering compounds. Moreover, the practical applicability of Sn-Bi2O3/SF@GCE sensors was investigated for the effective detection of 2-NA in real river water samples, revealing good recovery results.
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Affiliation(s)
- Subash Vetri Selvi
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan
| | - Adhimoorthy Prasannan
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan
| | - Hao Yu
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan
| | - Varghese Lincy
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan
| | - Po-Da Hong
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan.
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Din STU, Lee H, Yang W. Z-Scheme Heterojunction of 3-Dimensional Hierarchical Bi 3O 4Cl/Bi 5O 7I for a Significant Enhancement in the Photocatalytic Degradation of Organic Pollutants (RhB and BPA). NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:767. [PMID: 35269255 PMCID: PMC8911787 DOI: 10.3390/nano12050767] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 02/18/2022] [Accepted: 02/22/2022] [Indexed: 11/16/2022]
Abstract
In this study, we report the synthesis of a 3-dimensional (3D) hierarchical Bi3O4Cl/Bi5O7I (BOC/BOI) heterostructure for the photocatalytic degradation of Rhodamine-B (RhB) dye and colorless Bisphenol-A (BPA) pollutant under visible light. The heterostructure was prepared using in situ solvothermal and calcination methods. BOC/BOI exhibits a 3D hierarchical structure constructed with thin nano-platelets. The photocatalytic performance of the BOC/BOI photocatalyst demonstrated that the degradation efficiencies of RhB and BPA were 97% and 92% after light illumination within 90 and 30 min, respectively. In comparison, bare BOC and BOI efficiencies were only 20% and 10% for RhB dye, respectively, and 2.3% and 37% for BPA aqueous pollutants, respectively. Moreover, radical trapping measurements indicated that •O2- and •OH radicals played prominent roles in RhB and BPA degradation into mineralization. Analysis of band structures and photochemical redox reactions of BOC/BOI revealed a Z-scheme charge transfer between BOC and BOI by an internal electric field formed at the interface. Therefore, the highly improved photocatalytic performance of the BOC/BOI heterostructure is attributed to the synergetic effects of large surface area, high visible-light absorption, and the enhanced separation and transport of photo-excited electron-hole pairs induced by the hierarchical and Z-scheme heterojunction of the BOC/BOI.
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Affiliation(s)
| | | | - Woochul Yang
- Department of Physics, Dongguk University, Seoul 04620, Korea; (S.T.U.D.); (H.L.)
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Yu H, Sridhar D, Omanovic S. Ru
x
Bi
1‐x
‐oxide as an electrode material for pseudocapacitors. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.24306] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hao Yu
- Department of Chemical Engineering McGill University Montreal Quebec Canada
| | - Deepak Sridhar
- Department of Chemical Engineering McGill University Montreal Quebec Canada
| | - Sasha Omanovic
- Department of Chemical Engineering McGill University Montreal Quebec Canada
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4
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BiOCl ultrathin nanosheets modified with Fe3+ for enhanced visible light driven photocatalytic activity. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113211] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Wang S, Wang S, Guo X, Wang Z, Mao F, Su L, Wu H, Wang K, Zhang Q. An asymmetric supercapacitor with an interpenetrating crystalline Fe-MOF as the positive electrode and its congenetic derivative as the negative electrode. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00864a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Interpenetrating crystalline Fe-based materials of FeSC and congenetic derivative FeSC# have been assembled into an asymmetric supercapacitor, which can offer an excellent supercapacitor performance.
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Affiliation(s)
- Saier Wang
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P. R. China
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, Jiangsu, P. R. China
| | - Shuaishuai Wang
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P. R. China
| | - Xu Guo
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P. R. China
| | - Zikai Wang
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P. R. China
| | - Feifei Mao
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P. R. China
| | - Lianghu Su
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, Jiangsu, P. R. China
| | - Hua Wu
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P. R. China
| | - Kuaibing Wang
- Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P. R. China
| | - Qichun Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, P. R. China
- Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong SAR 999077, China
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Radoń A, Łukowiec D, Włodarczyk P. Broadband dielectric spectroscopy for monitoring temperature-dependent chloride ion motion in BiOCl plates. Sci Rep 2020; 10:22094. [PMID: 33328552 PMCID: PMC7744526 DOI: 10.1038/s41598-020-79018-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 11/09/2020] [Indexed: 11/17/2022] Open
Abstract
The dielectric properties and electrical conduction mechanism of bismuth oxychloride (BiOCl) plates synthesized using chloramine-T as the chloride ion source were investigated. Thermally-activated structure rebuilding was monitored using broadband dielectric spectroscopy, which showed that the onset temperature of this process was 283 K. This rebuilding was related to the introduction of free chloride ions into [Bi2O2]2+ layers and their growth, which increased the intensity of the (101) diffraction peak. The electrical conductivity and dielectric permittivity were related to the movement of chloride ions between plates (in the low-frequency region), the interplanar motion of Cl- ions at higher frequencies, vibrations of these ions, and charge carrier hopping at frequencies above 10 kHz. The influence of the free chloride ion concentration on the electrical conductivity was also described. Structure rebuilding was associated with a lower concentration of free chloride ions, which significantly decreased the conductivity. According to the analysis, the BiOCl plate conductivity was related to the movement of Cl- ions, not electrons.
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Affiliation(s)
- Adrian Radoń
- Łukasiewicz Research Network - Institute of Non-Ferrous Metals, Sowinskiego 5 St., 44-100, Gliwice, Poland.
- Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18 a St., 44-100, Gliwice, Poland.
| | - Dariusz Łukowiec
- Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18 a St., 44-100, Gliwice, Poland
| | - Patryk Włodarczyk
- Łukasiewicz Research Network - Institute of Non-Ferrous Metals, Sowinskiego 5 St., 44-100, Gliwice, Poland
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