1
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Noble Metals (Ag, Au, Pd and Pt) Decorated ZnBiVO4 Nanostructures for Enhanced Photocatalytic H2 Production. Top Catal 2022. [DOI: 10.1007/s11244-022-01765-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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2
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RGO supported ZnO/SnO2 Z-scheme heterojunctions with enriched ROS production towards enhanced photocatalytic mineralization of phenolic compounds and antibiotics at low temperature. J Colloid Interface Sci 2022; 632:196-215. [DOI: 10.1016/j.jcis.2022.11.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/01/2022] [Accepted: 11/08/2022] [Indexed: 11/19/2022]
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3
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Nayak R, Ashraf Ali F, G R Achary P, Nanda B. Effective Degradation of Ciprofloxacin and Cr (VI) by Surface Plasmon Resonance induced photocatalyst Ag (0)/BiVO4@SiO2: Performance and Mechanism. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Athar Hussain A, Nazir S, Ullah Khan A, Tahir K, Albalawi K, Ibrahim MM, Almarhoon ZM, Al-Shehri HS, Mersal GA, Mohammed Aldawsari A. Preparation of zinc oxide graphted nickel incorporated mesoporous SBA-16 doped graphene oxide: An efficient catalyst for transesterification of waste edible oil to biodiesel and photocatalytic degradation of organic dyes. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109379] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Nethravathi PC, V Manjula M, Devaraja S, Suresh D. Ag and BiVO4 decorated reduced Graphene oxide: A potential nano hybrid material for photocatalytic, sensing and biomedical applications. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109327] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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6
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Bano K, Mittal SK, Singh PP, Kaushal S. Sunlight driven photocatalytic degradation of organic pollutants using a MnV 2O 6/BiVO 4 heterojunction: mechanistic perception and degradation pathways. NANOSCALE ADVANCES 2021; 3:6446-6458. [PMID: 36133498 PMCID: PMC9419509 DOI: 10.1039/d1na00499a] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 09/01/2021] [Indexed: 05/06/2023]
Abstract
In the field of photocatalysis, fabrication of a heterojunction structure with effective charge separation at the interface and charge shift to enhance the photocatalytic activity has acquired extensive consideration. In the present investigation, MnV2O6/BiVO4 heterojunction samples with excellent photocatalytic performance under sunlight irradiation were conveniently synthesized by a hydrothermal technique, and characterized by UV-Vis, FTIR, XRD, FESEM, HRTEM, PL, BET and XPS techniques. The prepared samples were investigated as photocatalysts for degrading MB and RhB dyes under sunlight. Among various samples of MnV2O6/BiVO4, the S-V hetero-junction sample exhibited maximum photocatalytic activity with 98% and 96% degradation of MB and RhB dyes, respectively, in 6 and 35 min. The high photocatalytic activity of MnV2O6/BiVO4 may be due to the successful generation and shift of charges in the presence of visible light. The average reduction of chemical oxygen demand (COD) was found to be 75% after irradiation with direct sunlight. In the degradation process of dyes, superoxide anion radicals were the main responsive species, as revealed by trapping experiments. The degradation efficiency of MnV2O6/BiVO4 heterojunction did not diminish even after four cycles. In addition, the catalytic performance of the fabricated heterojunction was also explored for reducing 4-nitrophenols (4-NP) by using NaBH4. Absolute conversion of 4-NP to 4-aminophenol (4-AP) occurred without the production of intermediate byproducts.
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Affiliation(s)
- Karina Bano
- Department of Chemistry, Sri Guru Granth Sahib World University Fatehgarh Sahib Punjab India
| | - Susheel K Mittal
- School of Chemistry & Biochemistry, Thapar Institute of Engineering and Technology Patiala India
| | - Prit Pal Singh
- Department of Chemistry, Sri Guru Granth Sahib World University Fatehgarh Sahib Punjab India
| | - Sandeep Kaushal
- Department of Chemistry, Sri Guru Granth Sahib World University Fatehgarh Sahib Punjab India
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7
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Dong Q, Yang F, Liang F, Zhang Y, Xia D, Zhao W, Wu L, Liu X, Jiang Z, Sun C. Silver particle on BiVO4 nanosheet plasmonic photocatalyst with enhanced photocatalytic oxidation activity of sulfadiazine. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115751] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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8
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Guan H, Tian Y, Dong A, Su Y. Understanding the Structural-Dependent Photocatalytic Antibacterial Activity: a Case Study of Ag Modified BiVO 4. NANOSCALE RESEARCH LETTERS 2020; 15:152. [PMID: 32700264 PMCID: PMC7376813 DOI: 10.1186/s11671-020-03380-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 07/10/2020] [Indexed: 06/11/2023]
Abstract
In this work, Ag/BiVO4 heterostructural photocatalysts were developed in order to reveal exceptional structural-dependent photoinduced charge migration kinetics as well as the underlying photocatalytic antibacterial dynamic process. The structure-dependent interface of BiVO4 and Ag nanoparticles was successfully constructed to improve the photoinduced interface charge transfer efficiency and interface correlation. DFT calculation indicated that a net charge of about 0.33 e between Ag and tz-BiVO4 was achieved by extraordinary interface charge transfer, being far larger than that between Ag and ms-BiVO4. Larger net charge has consequences on mobility of charge carriers of tz-BiVO4 that can raise the migration and separation of charge carriers for Ag/tz-BiVO4 heterojunction. Fine interfacial contact between Ag and tz-BiVO4 led to the optimized photocatalytic performance toward E. coli inactivation, being predominately higher than that of tz-BiVO4, ms-BiVO4, and Ag/ms-BiVO4 catalysts. Besides photocatalytic activity, the thermocatalytic inactivation activity of Ag/tz-BiVO4 also exhibited a factor of about 7.2 and 3.1 times higher than that of tz-BiVO4 and Ag/ms-BiVO4. Trapping and EPR measurements suggested that the structural-dependent photocatalytic activity of Ag/BiVO4 mainly originated from the pronounced variation of the capability to produce H2O2 active species, where the capability of generating H2O2 over Ag/tz-BiVO4 is highly accelerated. Moreover, it cannot be ignored that this study provides an ideal candidate for many aspects, such as environmental and water pollution caused by pathogenic microorganisms and disinfection of medical materials, food packaging, household materials, and public places, etc.
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Affiliation(s)
- Hailin Guan
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021 Inner Mongolia People’s Republic of China
| | - Yuefeng Tian
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021 Inner Mongolia People’s Republic of China
| | - Alideertu Dong
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021 Inner Mongolia People’s Republic of China
| | - Yiguo Su
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021 Inner Mongolia People’s Republic of China
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9
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Luo Y, Sun Y, Gu X, Yan Q, Ji F, Xu X. Basic properties and photo-generated carrier dynamics of bismuth vanadate composites modified with CQDs, MWCNTs and rGO. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123678] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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10
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Song M, Wu Y, Xu C, Wang X, Su Y. Synergistic effects of multi-active sites in silver modified Bi°-BiVO 4 toward efficient reduction of aromatic nitrobenzene. JOURNAL OF HAZARDOUS MATERIALS 2019; 368:530-540. [PMID: 30710782 DOI: 10.1016/j.jhazmat.2019.01.083] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 01/22/2019] [Accepted: 01/23/2019] [Indexed: 06/09/2023]
Abstract
In this work, we report on the preparation of silver nanoparticles modified bismuth/bismuth vanadate (Bi°-BiVO4) catalyst with multi-active sites toward efficient reduction of aromatic nitrobenzene, aiming to tailor the synergistic effects of multi-active sites and specify the underlying catalytic mechanism. The as-prepared catalysts were characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray and X-ray photoelectron spectroscopy. It is observed that Ag nanoparticles with diameter of ˜30 nm were anchored evenly on the surface of rod-shaped BiVO4, which offered multi-active sites to contact with the reactants effectively and transfer interfacial electron to 4-nitrophenol (4-NP) rapidly. The activity factor k of Ag/Bi°-BiVO4 for 4-NP reduction is estimated to ˜3933.4 min-1 g-1, which is much higher than that obtained from pristine BiVO4 catalyst, Bi° and noble metal Ag nanoparticles. According to the experimental results, the reaction mechanism and reaction path of 4-NP reduction for BiVO4, Bi and Ag were studied through the density functional theory (DFT) theoretical calculation, which suggested that they exhibit synergistic catalytic effect in the reaction process. This work may provide a feasible foundation for the mechanism research of semiconductor reduction to 4-nitrophenol.
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Affiliation(s)
- Meiting Song
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China
| | - Yuhang Wu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China
| | - Chang Xu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China
| | - Xiaojing Wang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China
| | - Yiguo Su
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China.
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11
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Darkwah WK, Adormaa BB, Christelle Sandrine MK, Ao Y. Modification strategies for enhancing the visible light responsive photocatalytic activity of the BiPO4nano-based composite photocatalysts. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02039f] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present issues related to environmental purification have led to a great need for the development of a superior oxidation process to solve the life-threatening problem. The use of the BiPO4nanomaterial in photocatalysis is one of the best methods for the treatment of wastewater due to its less harmful nature.
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Affiliation(s)
- Williams Kweku Darkwah
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes
- Ministry of Education
- Environmental Engineering Department
- College of Environment
- Hohai University
| | - Buanya Beryl Adormaa
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes
- Ministry of Education
- Environmental Engineering Department
- College of Environment
- Hohai University
| | - Masso Kody Christelle Sandrine
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes
- Ministry of Education
- Environmental Engineering Department
- College of Environment
- Hohai University
| | - Yanhui Ao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes
- Ministry of Education
- Environmental Engineering Department
- College of Environment
- Hohai University
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12
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Regmi C, Dhakal D, Kim TH, Yamaguchi T, Lee SW. Fabrication of Ag-decorated BiOBr-mBiVO 4 dual heterojunction composite with enhanced visible light photocatalytic performance for degradation of malachite green. NANOTECHNOLOGY 2018; 29:154001. [PMID: 29388923 DOI: 10.1088/1361-6528/aaac60] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A visible light active Ag-decorated BiVO4-BiOBr dual heterojunction photocatalyst was prepared using a facile hydrothermal method, followed by the photodeposition of Ag. The photocatalytic activity of the synthesized samples was investigated by monitoring the change in malachite green (MG) concentration upon visible light irradiation. The synthesized sample was highly effective for the degradation of non-biodegradable MG. The enhanced activity observed was ascribed to the efficient separation and transfer of charge carriers across the dual heterojunction structure as verified by photoluminescence measurements. The removal of MG was primarily initiated by hydroxyl radicals and holes based on scavenger's effect. To gain insight into the degradation mechanism, both high performance liquid chromatography and high resolution-quantitative time of flight, electrospray ionization mass spectrometry measurements during the degradation process were carried out. The degradation primarily followed the hydroxylation and N-demethylation process. A possible reaction pathway is proposed on the basis of all the information obtained under various experimental conditions.
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Affiliation(s)
- Chhabilal Regmi
- Department of Environmental and Biochemical Engineering, Sun Moon University, Chungnam 31460, Republic of Korea
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13
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Xu X, Sun Y, Fan Z, Zhao D, Xiong S, Zhang B, Zhou S, Liu G. Mechanisms for ·[Formula: see text] and ·OH Production on Flowerlike BiVO 4 Photocatalysis Based on Electron Spin Resonance. Front Chem 2018; 6:64. [PMID: 29632859 PMCID: PMC5879119 DOI: 10.3389/fchem.2018.00064] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 02/27/2018] [Indexed: 11/22/2022] Open
Abstract
Many studies have focused on the use of BiVO4 as a photocatalyst, but few have investigated the production of free radicals during the photocatalytic process. Following synthesis of flowerlike BiVO4 and characterization by X-ray diffraction (XRD), Raman spectroscopy, Scanning electron microscopy (SEM) Scanning electron microscopy (EDX), UV-Vis and XPS, we successfully prepared BiVO4. Then we used electron spin resonance (ESR) to determine the production and degradation of individual active free radicals, including the superoxide radical (·[Formula: see text]) and the hydroxyl radical (·OH). In the first experiment, we used ESR to detect the signals of free radicals (·[Formula: see text] and ·OH) under varying oxygen conditions. The results shown that in addition to production by ·[Formula: see text], ·OH could also be produced by oxidation of h+ to OH-. In the next experiment, we detected ·OH under varying pH to identify the result of the first experiment, and found that signal intensities increased with increasing pH, indicating the mechanism for ·OH production. Finally, we conducted a trapping experiment to examine free radical degradation mechanisms. We identified ·OH and h+ as the main active free radicals and showed the complete production about ·OH. These results improve current knowledge of free radical production mechanisms, which can be used to enhance the photocatalytic performance of BiVO4.
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Affiliation(s)
- Xuan Xu
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China
- National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, China
| | - Yaofang Sun
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China
- National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, China
| | - Zihong Fan
- College of Environmental and Resources, Chongqing Technology and Business University, Chongqing, China
| | - Deqiang Zhao
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China
- National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, China
| | - Shimin Xiong
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China
- National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, China
| | - Bingyao Zhang
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China
- National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, China
| | - Shiyu Zhou
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China
- National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, China
| | - Guotao Liu
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China
- National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, China
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14
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Regmi C, Dhakal D, Lee SW. Visible-light-induced Ag/BiVO 4 semiconductor with enhanced photocatalytic and antibacterial performance. NANOTECHNOLOGY 2018; 29:064001. [PMID: 29219840 DOI: 10.1088/1361-6528/aaa052] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
An Ag-loaded BiVO4 visible-light-driven photocatalyst was synthesized by the microwave hydrothermal method followed by photodeposition. The photocatalytic performance of the synthesized samples was evaluated on a mixed dye (methylene blue and rhodamine B), as well as bisphenol A in aqueous solution. Similarly, the disinfection activities of synthesized samples towards the Gram-negative Escherichia coli (E. coli) in a model cell were investigated under irradiation with visible light (λ ≥ 420 nm). The synthesized samples have monoclinic scheelite structure. Photocatalytic results showed that all Ag-loaded BiVO4 samples exhibited greater degradation and a higher mineralization rate than the pure BiVO4, probably due to the presence of surface plasmon absorption that arises due to the loading of Ag on the BiVO4 surface. The optimum Ag loading of 5 wt% has the highest photocatalytic performance and greatest stability with pseudo-first-order rate constants of 0.031 min-1 and 0.023 min-1 for the degradation of methylene blue and rhodamine B respectively in a mixture with an equal volume and concentration of each dye. The photocatalytic degradation of bisphenol A reaches 76.2% with 5 wt% Ag-doped BiVO4 within 180 min irradiation time. Similarly, the Ag-loaded BiVO4 could completely inactivate E. coli cells within 30 min under visible light irradiation. The disruption of the cell membrane as well as degradation of protein and DNA exhibited constituted evidence for antibacterial activity towards E. coli. Moreover, the bactericidal mechanisms involved in the photocatalytic disinfection process were systematically investigated.
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Affiliation(s)
- Chhabilal Regmi
- Department of Environmental and Biochemical Engineering, Sun Moon University, Chungnam 31460, Republic of Korea
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15
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Zhou S, Zhang Q, Zhao D, Zong W, Fan Z, Sun Y, Xu X. Synthesis, properties and mechanism of photodegradation of core-shell structured upconversion luminescent NaYF4
:Yb3+
,Er3+
@BiOCl. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4230] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shiyu Zhou
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education; Chongqing University; Chongqing 400045 China
- National Centre for International Research of Low-Carbon and Green Buildings; Chongqing University; Chongqing 400045 China
| | - Qiyan Zhang
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education; Chongqing University; Chongqing 400045 China
- National Centre for International Research of Low-Carbon and Green Buildings; Chongqing University; Chongqing 400045 China
| | - Deqiang Zhao
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education; Chongqing University; Chongqing 400045 China
- National Centre for International Research of Low-Carbon and Green Buildings; Chongqing University; Chongqing 400045 China
| | - Wenjuan Zong
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education; Chongqing University; Chongqing 400045 China
- National Centre for International Research of Low-Carbon and Green Buildings; Chongqing University; Chongqing 400045 China
| | - Zihong Fan
- School of Environmental and Biological Engineering; Chongqing Technology and Business University; Chongqing 400067 China
| | - Yaofang Sun
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education; Chongqing University; Chongqing 400045 China
- National Centre for International Research of Low-Carbon and Green Buildings; Chongqing University; Chongqing 400045 China
| | - Xuan Xu
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education; Chongqing University; Chongqing 400045 China
- National Centre for International Research of Low-Carbon and Green Buildings; Chongqing University; Chongqing 400045 China
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16
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Salimi R, Sabbagh Alvani AA, Naseri N, Du SF, Poelman D. Visible-enhanced photocatalytic performance of CuWO4/WO3 hetero-structures: incorporation of plasmonic Ag nanostructures. NEW J CHEM 2018. [DOI: 10.1039/c8nj01656a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new plasmonic Ag hybridized CuWO4/WO3 heterostructured nanocomposite was successfully synthesized via a ligand-assisted sol gel method and the photocatalytic activity was evaluated by photo-degradation of methylene blue (MB) under visible light irradiation.
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Affiliation(s)
- R. Salimi
- Color & Polymer Research Center (CPRC)
- Amirkabir University of Technology
- Tehran 158754413
- Iran
- Department of Polymer Engineering and Color Technology
| | - A. A. Sabbagh Alvani
- Color & Polymer Research Center (CPRC)
- Amirkabir University of Technology
- Tehran 158754413
- Iran
- Department of Polymer Engineering and Color Technology
| | - N. Naseri
- Department of Physics
- Sharif University of Technology
- Tehran 11155-9161
- Iran
- Condensed Matter National Laboratory
| | - S. F. Du
- School of Chemical Engineering
- University of Birmingham
- Birmingham
- UK
| | - D. Poelman
- LumiLab
- Department of Solid State Sciences
- Ghent University
- Belgium
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17
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Shi C, Dong X, Wang X, Ma H, Zhang X. Ag nanoparticles deposited on oxygen-vacancy-containing BiVO 4 for enhanced near-infrared photocatalytic activity. CHINESE JOURNAL OF CATALYSIS 2018. [DOI: 10.1016/s1872-2067(17)62990-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Abay AK, Kuo DH, Chen X, Saragih AD. A new V-doped Bi 2(O,S) 3 oxysulfide catalyst for highly efficient catalytic reduction of 2-nitroaniline and organic dyes. CHEMOSPHERE 2017; 189:21-31. [PMID: 28926785 DOI: 10.1016/j.chemosphere.2017.09.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 08/17/2017] [Accepted: 09/05/2017] [Indexed: 06/07/2023]
Abstract
A new type of convenient, and environmentally friendly, Vanadium (V)-doped Bi2(O,S)3 oxysulfide catalyst with different V contents was successfully synthesized via a simple and facile method. The obtained V-doped Bi2(O,S)3 solid solution catalysts were fully characterized by conventional methods. The catalytic performance of the samples was tested by using the reduction of 2-nitroaniline (2-NA) in aqueous solution. The reduction/decolorization of methylene blue (MB) and rhodamine B (RhB) was also chosen to evaluate the universality of catalysts. It was observed that the introduction of V can improve the catalytic performance, and 20%V-Bi2(O,S)3 was found to be the optimal V doping concentration for the reduction of 2-NA, MB, and RhB dyes. For comparative purposes, a related V-free Bi2(O, S)3 oxysulfide material was synthesized and tested as the catalyst. The superior activity of V-doped Bi2(O,S)3 over pure Bi2(O,S)3 was ascribed mainly to an increase in active sites of the material and also due to the presence of synergistic effects. The presence of V5+ as found from XPS analysis may interact with Bi atoms and enhancing the catalytic activity of the sample. In the catalytic reduction of 2-NA, MB and RhB, the obtained V-doped Bi2(O,S)3 oxysulfide catalyst exhibited excellent catalytic activity as compared with other reported catalysts. Furthermore this highly efficient, low-cost and easily reusable V-doped Bi2(O,S)3 catalyst is anticipated to be of great potential in catalysis in the future.
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Affiliation(s)
- Angaw Kelemework Abay
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No.43, Sec. 4, Keelung Road, Taipei, 10607, Taiwan
| | - Dong-Hau Kuo
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No.43, Sec. 4, Keelung Road, Taipei, 10607, Taiwan.
| | - Xiaoyun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No.43, Sec. 4, Keelung Road, Taipei, 10607, Taiwan
| | - Albert Daniel Saragih
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No.43, Sec. 4, Keelung Road, Taipei, 10607, Taiwan
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19
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Jaihindh DP, Fu YP. Facile synthesis of deep eutectic solvent assisted BiOCl/BiVO 4 @AgNWs plasmonic photocatalysts under visible light enhanced catalytic performance. Catal Today 2017. [DOI: 10.1016/j.cattod.2017.04.060] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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20
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A low cost additive-free facile synthesis of BiFeWO6/BiVO4 nanocomposite with enhanced visible-light induced photocatalytic activity. J Colloid Interface Sci 2017; 506:553-563. [DOI: 10.1016/j.jcis.2017.07.079] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 07/18/2017] [Accepted: 07/19/2017] [Indexed: 11/18/2022]
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21
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Synthesis of Bi₂S₃/BiVO₄ Heterojunction with a One-Step Hydrothermal Method Based on pH Control and the Evaluation of Visible-Light Photocatalytic Performance. MATERIALS 2017; 10:ma10080891. [PMID: 28767085 PMCID: PMC5578257 DOI: 10.3390/ma10080891] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 07/15/2017] [Accepted: 07/28/2017] [Indexed: 11/16/2022]
Abstract
The band gaps of bismuth vanadate (BiVO4) and bismuth sulfide (Bi2S3) are about 2.40 eV and 1.30 eV, respectively. Although both BiVO4 and Bi2S3 are capable of strong visible light absorption, electron–hole recombination occurs easily. To solve this problem, we designed a one-step hydrothermal method for synthesizing a Bismuth sulfide (Bi2S3)/Bismuth vanadate (BiVO4) heterojunction using polyvinylpyrrolidone K-30 (PVP) as a structure-directing agent, and 2-Amino-3-mercaptopropanoic acid (l-cysteine) as a sulfur source. The pH of the reaction solution was regulated to yield different products: when the pH was 7.5, only monoclinic BiVO4 was produced (sample 7.5); when the pH was 8.0 or 8.5, both Bi2S3 and BiVO4 were produced (samples 8.0 and 8.5); and when the pH was 9.0, only Bi2S3 was produced (sample 9.0). In sample 8.0, Bi2S3 and BiVO4 were closely integrated with each other, with Bi2S3 particles formed on the surface of concentric BiVO4 layers, but the two compounds grew separately in a pH solution of 8.5. Visible-light photocatalytic degradation experiments demonstrated that the degradation efficiency of the Bi2S3/BiVO4 heterojunction was highest when prepared under a pH of 8.0. The initial rhodamine B in the solution (5 mg/L) was completely degraded within three hours. Recycling experiments verified the high stability of Bi2S3/BiVO4. The synthesis method proposed in this paper is expected to enable large-scale and practical use of Bi2S3/BiVO4.
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