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Batool S, Hasan M, Dilshad M, Zafar A, Tariq T, Shaheen A, Iqbal R, Ali Z, Munawar T, Iqbal F, Hassan SG, Shu X, Caprioli G. Green synthesized ZnO-Fe2O3-Co3O4 nanocomposite for antioxidant, microbial disinfection and degradation of pollutants from wastewater. BIOCHEM SYST ECOL 2022. [DOI: 10.1016/j.bse.2022.104535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Construction of Highly Active Zn3In2S6 (110)/g-C3N4 System by Low Temperature Solvothermal for Efficient Degradation of Tetracycline under Visible Light. Int J Mol Sci 2022; 23:ijms232113221. [DOI: 10.3390/ijms232113221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/15/2022] [Accepted: 10/27/2022] [Indexed: 11/17/2022] Open
Abstract
Herein, Zn3In2S6 photocatalyst with (110) exposed facet was prepared by low temperature solvothermal method. On this basis, a highly efficient binary Zn3In2S6/g-C3N4 was obtained by low temperature solvothermal method and applied to the degradation of tetracycline (TC). The samples of the preparation were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope, UV–vis diffuse reflection spectroscopy, and photoluminescence spectroscopy. Furthermore, the degradation performance of photocatalysts on TC was investigated under different experimental conditions. Finally, the mechanism of Zn3In2S6/g-C3N4 composite material degrading TC is discussed. The results show that Zn3In2S6 and Zn3In2S6/g-C3N4 photocatalysts with excellent performance could be successfully prepared at lower temperature. The Zn3In2S6/g-C3N4 heterojunction photocatalyst could significantly improve the photocatalytic activity compared with g-C3N4. After 150 min of illumination, the efficiency of 80%Zn3In2S6/g-C3N4 to degrade TC was 1.35 times that of g-C3N4. The improvement of photocatalytic activity was due to the formation of Zn3In2S6/g-C3N4 heterojunction, which promoted the transfer of photogenerated electron–holes. The cycle experiment test confirmed that Zn3In2S6/g-C3N4 composite material had excellent stability. The free radical capture experiment showed that ·O2− was the primary active material. This study provides a new strategy for the preparation of photocatalysts with excellent performance at low temperature.
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Ma L, Ai X, Chen Y, Liu P, Lin C, Lu K, Jiang W, Wu J, Song X. Improved Photocatalytic Activity via n-Type ZnO/ p-Type NiO Heterojunctions. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3665. [PMID: 36296854 PMCID: PMC9608471 DOI: 10.3390/nano12203665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/15/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
The design and construct pn heterojunction to reduce the recombination rate of photogenerated electron-hole pairs can effectively improve photocatalytic activity. In this study, ZnO/NiO heterojunctions were fabricated by annealing a Zn/Ni metal organic framework precursor synthesized via coprecipitation. The effects of the precursor annealing temperature on the microstructure, morphology, and optical properties of the ZnO/NiO nanocomposites were investigated using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and UV-vis absorption spectroscopy. The results showed that the nanocomposite was composed of hexagonal wurtzite ZnO and cubic NiO, with the former being the dominant phase. Large ZnO nanoparticles were attached to small NiO nanoparticles, and a pn heterojunction interface was formed. The photodegradation performance of the nanomaterials was evaluated by monitoring the degradation of RhB under irradiation by ultraviolet light. The ZnO/NiO nanocomposites exhibited excellent photocatalytic activity when the annealing temperature was 550 °C. The photodegradation mechanism was also analyzed in detail, revealing that the heterojunction between the n-type ZnO and the p-type NiO played an important role in impeding the recombination of photogenerated electron-hole pairs and improving the photocatalytic efficiency.
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Affiliation(s)
- Ligang Ma
- School of Electronic Engineering, Nanjing Xiaozhuang University, Nanjing 211171, China
| | - Xiaoqian Ai
- School of Physics and Information Engineering, Jiangsu Province Engineering Research Center of Basic Education Big Data Application, Jiangsu Second Normal University, Nanjing 210013, China
| | - Yujie Chen
- School of Physics and Information Engineering, Jiangsu Province Engineering Research Center of Basic Education Big Data Application, Jiangsu Second Normal University, Nanjing 210013, China
| | - Pengpeng Liu
- School of Electronic Engineering, Nanjing Xiaozhuang University, Nanjing 211171, China
| | - Chao Lin
- School of Electronic Engineering, Nanjing Xiaozhuang University, Nanjing 211171, China
| | - Kehong Lu
- School of Physics and Information Engineering, Jiangsu Province Engineering Research Center of Basic Education Big Data Application, Jiangsu Second Normal University, Nanjing 210013, China
| | - Wenjun Jiang
- School of Electronic Engineering, Nanjing Xiaozhuang University, Nanjing 211171, China
| | - Jiaen Wu
- School of Electronic Engineering, Nanjing Xiaozhuang University, Nanjing 211171, China
| | - Xiang Song
- School of Electronic Engineering, Nanjing Xiaozhuang University, Nanjing 211171, China
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Krishnan SAG, Sasikumar B, Arthanareeswaran G, László Z, Nascimben Santos E, Veréb G, Kertész S. Surface-initiated polymerization of PVDF membrane using amine and bismuth tungstate (BWO) modified MIL-100(Fe) nanofillers for pesticide photodegradation. CHEMOSPHERE 2022; 304:135286. [PMID: 35690168 DOI: 10.1016/j.chemosphere.2022.135286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 05/18/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
Pirimicarb as a pesticide is used to control the aphids in the agriculture field; however, it affects the groundwater ecosystem by leaching through the soil profile. The post-synthetic amine and BWO modified MIL-100 (Fe) nanofillers were synthesized. The photocatalytic property of amine-functionalized and BWO@MIL-100(Fe) nanofillers was confirmed by the lesser bandgap energy than the unmodified MIL-100 (Fe) nanofiller. Herein, we constructed a nanofillers grafted PVDF membrane via in-situ polymerization technique for the pirimicarb reduction and photodegradation. Furthermore, the nanofiller's grafted membranes were characterized by FESEM, XRD, FTIR, and contact angle analysis. The carboxylic acid peak was observed on the FTIR which demonstrated the PAA grafted on the membrane surface and similar crystalline peaks evident that the nanofillers were grafted on the membrane surface. Furthermore, surface morphology studies have exhibited the dispersion of nanofillers and enhanced microvoids in the cross-section of the membrane. The decrease in the water contact angle of the membrane depicted the improved antifouling properties and surface energy. The nanofiller's grafted membranes have shown higher hydrophilicity correlated well with the enhanced pure water flux in the order M4 > M5 > M2 > M3 > M6 > M7 compared to the neat membrane (M1). In BWO@MIL-100(Fe) membrane has shown a higher permeate flux (25.99 L m-2.h-1) than the neat PVDF membrane. The BWO@MIL-100(Fe) grafted PVDF membrane has also shown excellent pirimicarb photodegradation of 81% at pH 5. The proposed MIL-100 (Fe) and bismuth tungsten nanocomposite will pave the way for the different MOF-based photocatalytic materials for membrane-based pesticide degradation.
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Affiliation(s)
- S A Gokula Krishnan
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology Tiruchirappalli, Tamilnadu, 620015, India
| | - B Sasikumar
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology Tiruchirappalli, Tamilnadu, 620015, India
| | - G Arthanareeswaran
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology Tiruchirappalli, Tamilnadu, 620015, India.
| | - Zsuzsanna László
- Department of Biosystems Engineering, Faculty of Engineering, University of Szeged, Szeged, Hungary
| | - Erika Nascimben Santos
- Department of Biosystems Engineering, Faculty of Engineering, University of Szeged, Szeged, Hungary
| | - Gábor Veréb
- Department of Biosystems Engineering, Faculty of Engineering, University of Szeged, Szeged, Hungary
| | - Szabolcs Kertész
- Department of Biosystems Engineering, Faculty of Engineering, University of Szeged, Szeged, Hungary
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Nadeem MS, Munawar T, Mukhtar F, Batool S, Hasan M, Akbar UA, Hakeem AS, Iqbal F. Energy-levels well-matched direct Z-scheme ZnNiNdO/CdS heterojunction for elimination of diverse pollutants from wastewater and microbial disinfection. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:50317-50334. [PMID: 35229262 DOI: 10.1007/s11356-022-19271-2] [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] [Received: 10/29/2021] [Accepted: 02/13/2022] [Indexed: 06/14/2023]
Abstract
Energy-levels well-matched direct Z-scheme ZnNiNdO/CdS heterojunction was successfully fabricated using facile co-precipitation and ultra-sonication techniques and characterized with XRD, FTIR, Raman, PL, UV-vis, and FE-SEM. The XRD diffractograms confirmed the co-doping of Ni-Nd in ZnO and the formation of heterostructured nanocomposite. FTIR and Raman data showed the presence of metal-oxygen vibration and optical phonon modes of ZnO and CdS. FE-SEM images exhibited the network type morphology. The energy bandgap was redshifted by co-doping (3.37-2.9 eV) and was further reduced (2.6 eV) by making a composite with CdS. The ZnNiNdO/CdS catalyst degraded 99.7, 49, 96.6, 98.6, and 98.6% methylene blue (MB), p-nitroaniline (P-Nitro), methyl orange (MO), methyl red (MR), and rhodamine B (RhB) dyes under 50 min sunlight irradiation. Moreover, ZnNiNdO/CdS showed intense inhibition activity towards Staphylococcus aureus, Escherichia coli, Proteus vulgaris, and Pseudomonas aeruginosa bacterial strains with maximum inhibition zone diameters 30, 33, 27, and 31 mm, respectively. The synergistic effects arising from band alignment can lead to efficient vectorial charge separation, transportation, and lower recombination of photoinduced charge carriers, ultimately boosting photocatalytic and antibacterial performance. The ZnNiNdO/CdS photocatalyst has higher stability up to the 7th cycle towards MB dye with ~ 5% deficit in degradation efficiency. The higher generation of superoxide and hydroxyl radical was confirmed by species trapping experiments responsible for photodegradation of dyes molecules. Furthermore, the results showed that the photocatalytic and antibacterial performance of pristine ZnO can be enhanced by co-doping and tuning energy bandgap.
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Affiliation(s)
| | - Tauseef Munawar
- Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Faisal Mukhtar
- Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Sana Batool
- Institute of Bio-Chemistry, Bio-Technology, and Bioinformatics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Murtaza Hasan
- Institute of Bio-Chemistry, Bio-Technology, and Bioinformatics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Usman Ali Akbar
- Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Abbas Saeed Hakeem
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Faisal Iqbal
- Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
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Facile Synthesis, Characterization, and Photocatalytic Activity of Hydrothermally Grown Cu2+-Doped ZnO–SnS Nanocomposites for MB Dye Degradation. Catalysts 2022. [DOI: 10.3390/catal12030328] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The morphology, chemical composition, and doping process of metal oxides and sulfides play a significant role in their photocatalytic performance under solar light illumination. We synthesized Cu2+-doped ZnO–SnS nanocomposites at 220 °C for 10 h, using hydrothermal methods. These nanocomposites were structurally, morphologically, and optically characterized using various techniques, including powder X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and UV-visible absorption spectroscopy. Their photocatalytic activity (PCA) on methylene blue (MB) pollutant dye was examined under 150 W solar light illumination. Mixed-phase abundances with hexagonal ZnO and orthorhombic SnS structures were observed. TEM micrographs showed changes in morphology from spherical to nano-flake structures with an increasing doping concentration. XPS indicated the chemical states of the constituent elements in the nanocomposites. UV-visible absorption spectroscopy showed a decrease in the bandgap with an increasing doping concentration. Strong PCA was observed due to the separation of charge carriers, a change in bandgap, and a high light absorption ability under solar light irradiation. The measured photodegradation efficiency of the MB dye was approximately 97% after 2 h. The movement of the charge carriers and the bandgap alignment of the synthesized composites are briefly discussed.
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Subhiksha V, Kokilavani S, Sudheer Khan S. Recent advances in degradation of organic pollutant in aqueous solutions using bismuth based photocatalysts: A review. CHEMOSPHERE 2022; 290:133228. [PMID: 34896424 DOI: 10.1016/j.chemosphere.2021.133228] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/25/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
Today, a major concern associated with the environment is the water pollution occurred due to the introduction of variety of persistent organic pollutants and residual dyes from different sources (e.g., dye and dye intermediates industries, paper and pulp industries, textile industries, tannery and craft bleaching industries, pharmaceutical industries, etc.) into our natural water resources. Recently, advanced oxidation processes (AOPs) by photocatalyst have garnered great attention as a new frontier promising eco-friendly and sustainable wastewater treatment technology. Utilization of the photocatalytic technology efficiently is significant for cleaner environment. Bismuth based photocatalyst have aroused widespread attention as a visible light responsive photocatalyst for waste water treatment due to their non-toxicity, low cost, modifiable morphology, and outstanding optical and chemical properties. In this review, we have dealt with the research progress on bismuth-based photocatalysts for waste water treatment. However, it seems to give limitation over pristine photocatalysts such as slow migration of charge carriers, charge carrier recombination, low visible light absorption, etc., Various bismuth based photocatalyst and its modifications via doping, heterojunction, Z-scheme etc., are discussed in detail. Further, the strategies adopted to improve the photocatalytic activity of bismuth based photocatalyst to improve the waste water treatment (mostly drugs and dyes) are critically reviewed. Also, we have discussed the bacterial inactivation by bismuth based photocatalyst. Finally, the challenges and future aspects against bismuth based photocatalyst are explored for further research.
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Affiliation(s)
- V Subhiksha
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - S Kokilavani
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - S Sudheer Khan
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India.
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Oluwalana AE, Ajibade PA. Tin sulfide nanoparticles as photocatalysts for the degradation of organic dyes. J Sulphur Chem 2021. [DOI: 10.1080/17415993.2021.1979975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Abimbola E. Oluwalana
- School of Chemistry and Physics, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | - Peter A. Ajibade
- School of Chemistry and Physics, University of KwaZulu-Natal, Pietermaritzburg, South Africa
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Munawar T, Mukhtar F, Yasmeen S, Naveed-Ur-Rehman M, Nadeem MS, Riaz M, Mansoor M, Iqbal F. Sunlight-induced photocatalytic degradation of various dyes and bacterial inactivation using CuO-MgO-ZnO nanocomposite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:42243-42260. [PMID: 33797716 DOI: 10.1007/s11356-021-13572-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Novel tri-phase CuO-MgO-ZnO nanocomposite was prepared using the co-precipitation technique and investigated its physical properties using characterization techniques including XRD, FTIR, Raman, IV, UV-vis, PL, and SEM. The application of grown CuO-MgO-ZnO nanocomposite for the degradation of various dyes under sunlight and antibacterial activity against different bacteria were studied. The XRD confirmed the existence of diffraction peaks related to CuO (monoclinic), MgO (cubic), and ZnO (hexagonal) with CuO phase 40%, MgO 24%, and ZnO 36%. The optical energy gap of nanocomposite was 2.9 eV, which made it an efficient catalyst under sunlight. Raman and FTIR spectra have further confirmed the formation of the nanocomposite. SEM images revealed agglomerated rod-shaped morphology. EDX results showed the atomic percentage of a constituent element in this order Cu>Zn>Mg. PL results demonstrate the presence of intrinsic defects. The photocatalytic activity against methylene blue (MB), methyl orange (MO), rhodamine-B (RhB), cresol red (CR), and P-nitroaniline (P-Nitro) dyes has shown the excellent degradation efficiencies 88.5%, 93.5%, 75.9%, 98.8%, and 98.6% at 5 ppm dye concentration and 82.6%, 83.6%, 64.3%, 93.1%, and 94.3% at 10 ppm dye concentration in 100 min, respectively, under sunlight illumination. The higher degradation is due to the generation of superoxide and hydroxyl radicals. The recyclability test showed the reusability of catalyst up to the 5th cycle. The antibacterial activity against Escherichia coli, Klebsiella pneumoniae, Proteus Vulgaris, Staphylococcus aureus, and Pseudomonas aeruginosa bacteria with the zone of inhibition 30, 31, 30, 30, and 30 mm, respectively, was achieved.
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Affiliation(s)
- Tauseef Munawar
- Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Faisal Mukhtar
- Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Sadaf Yasmeen
- Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | | | | | - Muhammad Riaz
- Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Muhammad Mansoor
- School of Chemical & Materials Engineering (SCME), National University of Sciences and Technology (NUST), Islamabad, 24090, Pakistan
| | - Faisal Iqbal
- Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
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Zn-doping mediated formation of oxygen vacancies in SnO2 with unique electronic structure for efficient and stable photocatalytic toluene degradation. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63737-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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A Review of the Synthesis, Properties, and Applications of Bulk and Two-Dimensional Tin (II) Sulfide (SnS). APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11052062] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Tin(II) sulfide (SnS) is an attractive semiconductor for solar energy conversion in thin film devices due to its bandgap of around 1.3 eV in its orthorhombic polymorph, and a band gap energy of 1.5–1.7 eV for the cubic polymorph—both of which are commensurate with efficient light harvesting, combined with a high absorption coefficient (10−4 cm−1) across the NIR–visible region of the electromagnetic spectrum, leading to theoretical power conversion efficiencies >30%. The high natural abundance and a relative lack of toxicity of its constituent elements means that such devices could potentially be inexpensive, sustainable, and accessible to most nations. SnS exists in its orthorhombic form as a layer structure similar to black phosphorus; therefore, the bandgap energy can be tuned by thinning the material to nanoscale dimensions. These and other properties enable SnS applications in optoelectronic devices (photovoltaics, photodetectors), lithium- and sodium-ion batteries, and sensors among others with a significant potential for a variety of future applications. The synthetic routes, structural, optical and electronic properties as well as their applications (in particular photonic applications and energy storage) of bulk and 2D tin(II) sulfide are reviewed herein.
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Li Y, Pan C, Wang G, Leng Y, Jiang P, Dong Y, Zhu Y. Improving the photocatalytic activity of benzyl alcohol oxidation by Z-scheme SnS/g-C 3N 4. NEW J CHEM 2021. [DOI: 10.1039/d1nj00923k] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The formation of the Z-scheme heterojunction between SnS and g-C3N4 facilitates the separation of electrons and holes, thereby increasing the conversion of benzyl alcohol.
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Affiliation(s)
- Yan Li
- International Joint Research Center for Photoresponsive Molecules and Materials
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Chengsi Pan
- International Joint Research Center for Photoresponsive Molecules and Materials
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Guangli Wang
- International Joint Research Center for Photoresponsive Molecules and Materials
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Yan Leng
- International Joint Research Center for Photoresponsive Molecules and Materials
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Pingping Jiang
- International Joint Research Center for Photoresponsive Molecules and Materials
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Yuming Dong
- International Joint Research Center for Photoresponsive Molecules and Materials
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Yongfa Zhu
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
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Liang M, Yu Y, Wang Y, Yu Y. Remarkably efficient charge transfer through a double heterojunction mechanism by a CdS-SnS-SnS 2/rGO composite with excellent photocatalytic performance under visible light. JOURNAL OF HAZARDOUS MATERIALS 2020; 391:121016. [PMID: 32086116 DOI: 10.1016/j.jhazmat.2019.121016] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 08/04/2019] [Accepted: 08/13/2019] [Indexed: 06/10/2023]
Abstract
In this work, a novel CdS-SnS-SnS2/rGO photocatalyst with two tin valence states (Ⅱ and IV) was successfully synthesized by a one-pot solvothermal method. For comparison, CdS-SnS2/rGO (GCS2) with tin in only the IV valence state was made by the same method. Based on a series of characterizations, CdS, SnS and SnS2 were shown to be successfully loaded onto the rGO surface. The introduction of rGO may increase charge carrier separation. The degradation efficiency increased gradually with increasing rGO loading content, and the optimum photocatalytic activity was observed at 6.0 wt% rGO loading content (GCS1), which achieved the efficient removal (84.46%) of ibuprofen over 60 min. Compared with GCS2, the CdS-SnS-SnS2/rGO composite exhibited significantly improved photocatalytic performance, which can be ascribed to the formation of a double heterostructure. rGO worked as a transfer mediator to transfer electrons from the conduction band (CB) of SnS to the CB of SnS2 at the heterointerface, which then flowed to the CB of CdS because of another heterojunction, further enhancing the separation efficiency of photogenerated carriers. Therefore, this study highlights a novel double heterojunction system with a facial preparation method, visible light response and good recyclability, which is beneficial for environmental remediation.
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Affiliation(s)
- Mingxing Liang
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, PR China; State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Yajing Yu
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, PR China; School of Chemical and Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, PR China
| | - Ying Wang
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, PR China.
| | - Yan Yu
- School of Chemical and Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, PR China
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Insights into the Photocatalytic Bacterial Inactivation by Flower-Like Bi2WO6 under Solar or Visible Light, Through in Situ Monitoring and Determination of Reactive Oxygen Species (ROS). WATER 2020. [DOI: 10.3390/w12041099] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study addresses the visible light-induced bacterial inactivation kinetics over a Bi2WO6 synthesized catalyst. The systematic investigation was undertaken with Bi2WO6 prepared by the complexation of Bi with acetic acid (carboxylate) leading to a flower-like morphology. The characterization of the as-prepared Bi2WO6 was carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), specific surface area (SSA), and photoluminescence (PL). Under low intensity solar light (<48 mW/cm2), complete bacterial inactivation was achieved within two hours in the presence of the flower-like Bi2WO6, while under visible light, the synthesized catalyst performed better than commercial TiO2. The in situ interfacial charge transfer and local pH changes between Bi2WO6 and bacteria were monitored during the bacterial inactivation. Furthermore, the reactive oxygen species (ROS) were identified during Escherichia coli inactivation mediated by appropriate scavengers. The ROS tests alongside the morphological characteristics allowed the proposition of the mechanism for bacterial inactivation. Finally, recycling of the catalyst confirmed the stable nature of the catalyst presented in this study.
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15
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Wang R, Li Y, Sun Q, Gao K, Pan Y, Li M, Zhang F, Na P. Construction of H 4x K 2x Sn 2-x S 4+x /TiO 2 nanocomposites with enhanced visible light-driven photocatalytic performance. RSC Adv 2020; 10:11851-11860. [PMID: 35496616 PMCID: PMC9050502 DOI: 10.1039/c9ra08843a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/21/2020] [Indexed: 11/21/2022] Open
Abstract
In this paper, a new photocatalyst with TiO2 nanospheres decorated on ultrathin layered thiostannate H4x K2x Sn2-x S4+x (X = 0.5-0.6, HKTS) nanosheets was successfully synthesized by a facile solvothermal method combined with the hydrolysis of tetrabutyl titanate and it was denoted as HKTS/TiO2. By adjusting the content of tetrabutyl titanate, composites with different Sn/Ti molar ratios were prepared. The composites were applied for RhB degradation under visible light irradiation, and the optimum proportion of HKTS/TiO2 was obtained. The results of X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy and scanning electron microscopy confirmed that TiO2 was successfully decorated on HKTS nanosheets. The combination of TiO2 and HKTS extended the absorption wavelength of TiO2 from UV to visible light range, and the separation efficiency of photoexcited electron-hole pairs was also enhanced. The photocatalytic degradation rate of RhB over HKTS/TiO2-1.0 was almost 97.9% after 60 min illumination, which was higher than those of HKTS and pure TiO2. The photocatalyst exhibited excellent reusability and stability as the degradation rate of RhB was 95.7% even after three cycles. The photocatalytic mechanism experiment indicated that ·O2 - and h+ played a dominant role in the photocatalytic process. All these results indicate that the newly fabricated HKTS/TiO2 composites provide a high-performance photocatalyst for waste water treatment, and the application of thiostannate can be extended to the field of photocatalytic materials.
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Affiliation(s)
- Rongjing Wang
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300354 P. R. China
| | - Yaru Li
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300354 P. R. China
| | - Qianyi Sun
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300354 P. R. China
| | - Kaihua Gao
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300354 P. R. China
| | - Yufu Pan
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300354 P. R. China
| | - Meng Li
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300354 P. R. China
| | - Feitian Zhang
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300354 P. R. China
| | - Ping Na
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300354 P. R. China
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16
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Gao H, Zhai C, Fu N, Du Y, Yu K, Zhu M. Synthesis of Pt nanoparticles supported on a novel 2D bismuth tungstate/lanthanum titanate heterojunction for photoelectrocatalytic oxidation of methanol. J Colloid Interface Sci 2020; 561:338-347. [DOI: 10.1016/j.jcis.2019.10.114] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 10/29/2019] [Accepted: 10/30/2019] [Indexed: 01/18/2023]
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17
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Wang M, Fan C, Yang S, Liu M, Luo J, Liu Y, Tang L, Gong Z, Leng S. Nitrogen deficient carbon nitride for efficient visible light driven tetracycline degradation: a combination of experimental and DFT studies. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01124j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The narrow visible-light absorption range and a high recombination rate of photo-excited electrons and holes are the main reasons for the confined photocatalytic performance of graphitic carbon nitride (g-C3N4).
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Affiliation(s)
- Mier Wang
- College of Environmental Science and Engineering
- Hunan University
- Changsha
- China
- Key Laboratory of Environmental Biology and Pollution Control
| | - Changzheng Fan
- College of Environmental Science and Engineering
- Hunan University
- Changsha
- China
- Key Laboratory of Environmental Biology and Pollution Control
| | - Shuaijun Yang
- College of Environmental Science and Engineering
- Hunan University
- Changsha
- China
- Key Laboratory of Environmental Biology and Pollution Control
| | - Milan Liu
- College of Environmental Science and Engineering
- Hunan University
- Changsha
- China
- Key Laboratory of Environmental Biology and Pollution Control
| | - Jun Luo
- College of Environmental Science and Engineering
- Hunan University
- Changsha
- China
- Key Laboratory of Environmental Biology and Pollution Control
| | - Yani Liu
- College of Environmental Science and Engineering
- Hunan University
- Changsha
- China
- Key Laboratory of Environmental Biology and Pollution Control
| | - Lin Tang
- College of Environmental Science and Engineering
- Hunan University
- Changsha
- China
- Key Laboratory of Environmental Biology and Pollution Control
| | - Zhixuan Gong
- College of Environmental Science and Engineering
- Hunan University
- Changsha
- China
- Key Laboratory of Environmental Biology and Pollution Control
| | - Shuwen Leng
- College of Environmental Science and Engineering
- Hunan University
- Changsha
- China
- Key Laboratory of Environmental Biology and Pollution Control
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18
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Behera C, Ghosh SP, Kar JP, Samal SL. Facile synthesis and enhanced photocatalytic activity of Ag–SnS nanocomposites. NEW J CHEM 2020. [DOI: 10.1039/d0nj01225d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The enhanced photocatatlytic properties of Ag–SnS nanocomposites are considered to be due to the synergistic effect of high surface area, broad range of photon absorption and efficient charge separation.
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Affiliation(s)
- Chandini Behera
- Solid State and Materials Laboratory
- Department of Chemistry
- NIT Rourkela
- Rourkela-769008
- India
| | | | - Jyoti P. Kar
- Department of Physics and Astronomy
- NIT Rourkela
- Rourkela-769008
- India
| | - Saroj L Samal
- Solid State and Materials Laboratory
- Department of Chemistry
- NIT Rourkela
- Rourkela-769008
- India
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19
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Zhang X, Gao Y, Nengzi LC, Li B, Gou J, Cheng X. Synthesis of SnS/TiO2 nano-tube arrays photoelectrode and its high photoelectrocatalytic performance for elimination of 2,4,6-trichlorophenol. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115742] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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20
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Behera C, Samal R, Rout CS, Dhaka RS, Sahoo G, Samal SL. Synthesis of CuSbS 2 Nanoplates and CuSbS 2-Cu 3SbS 4 Nanocomposite: Effect of Sulfur Source on Different Phase Formation. Inorg Chem 2019; 58:15291-15302. [PMID: 31693354 DOI: 10.1021/acs.inorgchem.9b02291] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Layered CuSbS2 and related ternary metal chalcogenides have attracted huge research interest due to their potential applications in sustainable energy storage, photovoltaics, and related area. Here, we report facile synthesis of CuSbS2 nanoplates and CuSbS2-Cu3SbS4 nanocomposite using hot injection method with varying sulfur precursors. Elemental sulfur (S8) as sulfur precursor results in nanoplates of pure CuSbS2, while thioacetamide (TA) as sulfur source gives nanocomposite with Cu3SbS4 nanoparticle decorated on the surface of CuSbS2 nanoplates. The ease of reduction of TA as compared to sulfur at high temperature, in the presence of oleylamine, promotes the oxidation of antimony from (III) to (V) state and the formation of Cu3SbS4 phase containing Sb(V). Raman scattering study confirms the presence of Cu3SbS4 phase in CuSbS2-Cu3SbS4 nanocomposite. X-ray photoemission spectroscopy study on CuSbS2 nanoplates and CuSbS2-Cu3SbS4 nanocomposite confirms the desired valence state of the constituent elements. Electrochemical properties measurement shows better specific capacitance for CuSbS2-Cu3SbS4 nanocomposite (151 F/g) as compared to CuSbS2 nanoplates along with long-term cyclic stability with 68.2% capacitance retention.
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Affiliation(s)
- Chandini Behera
- Department of Chemistry , NIT Rourkela , Rourkela 769008 , Odisha , India
| | - Rutuparna Samal
- Center for Nano and Material Sciences , Jain Global Campus , Jakkasandra , Bangalore - 562112 , India
| | - Chandra S Rout
- Center for Nano and Material Sciences , Jain Global Campus , Jakkasandra , Bangalore - 562112 , India
| | - Rajendra S Dhaka
- Department of Physics , Indian Institute of Technology Delhi , Hauz Khas 110016 , New Delhi , India
| | - Gokarneswar Sahoo
- Department of Chemistry , NIT Rourkela , Rourkela 769008 , Odisha , India
| | - Saroj L Samal
- Department of Chemistry , NIT Rourkela , Rourkela 769008 , Odisha , India
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21
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Facile synthesized low-cost MoS2/CdS nanodots-on-nanorods heterostructures for highly efficient pollution degradation under visible-light irradiation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.11.032] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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22
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Li Z, Meng X, Zhang Z. Hexagonal SnS nanoplates assembled onto hierarchical Bi2WO6 with enhanced photocatalytic activity in detoxification and disinfection. J Colloid Interface Sci 2019; 537:345-357. [DOI: 10.1016/j.jcis.2018.10.070] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/22/2018] [Accepted: 10/23/2018] [Indexed: 10/28/2022]
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23
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Xia Q, Huang B, Yuan X, Wang H, Wu Z, Jiang L, Xiong T, Zhang J, Zeng G, Wang H. Modified stannous sulfide nanoparticles with metal-organic framework: Toward efficient and enhanced photocatalytic reduction of chromium (VI) under visible light. J Colloid Interface Sci 2018; 530:481-492. [DOI: 10.1016/j.jcis.2018.05.015] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/07/2018] [Accepted: 05/08/2018] [Indexed: 01/10/2023]
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24
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Wu R, Song H, Luo N, Ji G. Hydrothermal preparation of 3D flower-like BiPO4/Bi2WO6 microsphere with enhanced visible-light photocatalytic activity. J Colloid Interface Sci 2018; 524:350-359. [DOI: 10.1016/j.jcis.2018.03.031] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 03/06/2018] [Accepted: 03/11/2018] [Indexed: 11/28/2022]
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25
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Rad TS, Khataee A, Rahim Pouran S. Synergistic enhancement in photocatalytic performance of Ce (IV) and Cr (III) co-substituted magnetite nanoparticles loaded on reduced graphene oxide sheets. J Colloid Interface Sci 2018; 528:248-262. [PMID: 29859450 DOI: 10.1016/j.jcis.2018.05.087] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/21/2018] [Accepted: 05/23/2018] [Indexed: 01/17/2023]
Abstract
Effective utilization of visible-light by a photocatalyst is of great significance in photocatalytic processes. Herein, magnetite structure was modified by co-incorporation of Ce4+ and Cr3+ cations, and deposition on reduced graphene oxide sheets. The as-prepared Fe2.8Cr0.2O4#rGO and Fe2.5Cr0.2Ce0.3O4#rGO nanocomposites were characterized by XRD, SEM, X-ray Dot mapping, EDX, BET, DRS, XPS, FT-IR and VSM techniques and assessed for their photocatalytic performance under visible light irradiation for treatment of methylene blue. The results confirmed the central role of the incorporated Cr and Ce in improving the photocatalytic performance of magnetite through enhanced light harvesting, and the role of Ce3+/Ce4+ redox pair, and rGO sheets in extending the life span of photo-induced e-/h+. Moreover, the influence of enhancers and scavengers were evaluated and oxidation path and generated byproducts were estimated. The results established the Fe2.5Cr0.2Ce0.3O4#rGO nanocomposite as a visible-light-driven photocatalyst for effective degradation of recalcitrant compounds.
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Affiliation(s)
- Tannaz Sadeghi Rad
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran.
| | - Shima Rahim Pouran
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
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26
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Bagherzadeh M, Kaveh R. A new SnS 2 -BiFeO 3 /reduced graphene oxide photocatalyst with superior photocatalytic capability under visible light irradiation. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.03.031] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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27
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Ma F, Yang Q, Wang Z, Liu Y, Xin J, Zhang J, Hao Y, Li L. Enhanced visible-light photocatalytic activity and photostability of Ag 3PO 4/Bi 2WO 6 heterostructures toward organic pollutant degradation and plasmonic Z-scheme mechanism. RSC Adv 2018; 8:15853-15862. [PMID: 35539476 PMCID: PMC9080155 DOI: 10.1039/c8ra01477a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 04/21/2018] [Indexed: 11/21/2022] Open
Abstract
Novel Ag3PO4/Bi2WO6 heterostructured materials with enhanced visible-light catalytic performance were successfully synthesized by assembly combined with a hydrothermal treatment. The microstructures, morphologies, and optical properties of the prepared samples were characterized by multiple techniques. The irregular Ag3PO4 nanospheres dispersed on the surface of Bi2WO6 nanoflakes, and their catalytic performances were evaluated via the degradation of organic pollutants including rhodamine B (RB), methylene blue (MB), crystal violet (CV), methyl orange (MO), and phenol (Phen) under visible-light irradiation. The resulting Ag3PO4/Bi2WO6 heterostructured materials displayed higher photocatalytic activity than that of either pure Bi2WO6 or Ag3PO4. The enhanced photocatalytic activity was due to the good formation of heterostructures, which could not only broaden the spectral response range to visible light but also effectively promoted the charge separation. Meanwhile, the reasonable photoreactive plasmonic Z-scheme mechanism was carefully investigated on the basic of the reactive species scavenging tests, photoelectrochemical experiments, and photoluminescence (PL) spectrum. In addition, the excellent photostability of Ag3PO4/Bi2WO6 was obtained, which Ag formed at the early photocatalytic reaction acted as the charge transmission-bridge to restrain the further photoreduction of Ag3PO4.
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Affiliation(s)
- Fengyan Ma
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang P. R. China
| | - Qilin Yang
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang P. R. China
| | - Zhengjun Wang
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang P. R. China
| | - Yahong Liu
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang P. R. China
| | - Jianjiao Xin
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang P. R. China
| | - Jingjing Zhang
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang P. R. China
| | - Yuting Hao
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang P. R. China
| | - Li Li
- College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 Heilongjiang P. R. China
- College of Materials Science and Engineering, Qiqihar University Qiqihar 161006 Heilongjiang P. R. China
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28
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Liang C, Niu CG, Guo H, Huang DW, Wen XJ, Yang SF, Zeng GM. Combination of efficient charge separation with the assistance of novel dual Z-scheme system: self-assembly photocatalyst Ag@AgI/BiOI modified oxygen-doped carbon nitride nanosheet with enhanced photocatalytic performance. Catal Sci Technol 2018. [DOI: 10.1039/c7cy02190a] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The self-assembly dual Z-scheme photocatalyst Ag@AgI/BiOI/g-C3N4 was successfully fabricated with high charge separation efficiency.
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Affiliation(s)
- Chao Liang
- College of Environmental Science Engineering
- Key Laboratory of Environmental Biology Pollution Control
- Ministry of Education
- Hunan University
- Changsha 410082
| | - Cheng-Gang Niu
- College of Environmental Science Engineering
- Key Laboratory of Environmental Biology Pollution Control
- Ministry of Education
- Hunan University
- Changsha 410082
| | - Hai Guo
- College of Environmental Science Engineering
- Key Laboratory of Environmental Biology Pollution Control
- Ministry of Education
- Hunan University
- Changsha 410082
| | - Da-Wei Huang
- South China Institute of Environmental Sciences
- Ministry of Environmental Protection of PRC
- Guangzhou 510655
- China
| | - Xiao-Ju Wen
- College of Environmental Science Engineering
- Key Laboratory of Environmental Biology Pollution Control
- Ministry of Education
- Hunan University
- Changsha 410082
| | - Shi-Feng Yang
- College of Environmental Science Engineering
- Key Laboratory of Environmental Biology Pollution Control
- Ministry of Education
- Hunan University
- Changsha 410082
| | - Guang-Ming Zeng
- College of Environmental Science Engineering
- Key Laboratory of Environmental Biology Pollution Control
- Ministry of Education
- Hunan University
- Changsha 410082
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29
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Zhang M, Zhu Y, Li W, Wang F, Li H, Liu X, Zhang W, Ren C. Double Z-scheme system of silver bromide@bismuth tungstate/tungsten trioxide ternary heterojunction with enhanced visible-light photocatalytic activity. J Colloid Interface Sci 2018; 509:18-24. [DOI: 10.1016/j.jcis.2017.08.095] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/24/2017] [Accepted: 08/29/2017] [Indexed: 10/19/2022]
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30
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Yao K, Li J, Shan S, Jia Q. One-step synthesis of urchinlike SnS/SnS2 heterostructures with superior visible-light photocatalytic performance. CATAL COMMUN 2017. [DOI: 10.1016/j.catcom.2017.07.019] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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31
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Visible light photocatalytic performance and mechanism of highly efficient SnS/BiOI heterojunction. J Colloid Interface Sci 2017. [DOI: 10.1016/j.jcis.2017.06.019] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Zhang J, Yuan X, Jiang L, Wu Z, Chen X, Wang H, Wang H, Zeng G. Highly efficient photocatalysis toward tetracycline of nitrogen doped carbon quantum dots sensitized bismuth tungstate based on interfacial charge transfer. J Colloid Interface Sci 2017; 511:296-306. [PMID: 29031149 DOI: 10.1016/j.jcis.2017.09.083] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/22/2017] [Accepted: 09/21/2017] [Indexed: 12/11/2022]
Abstract
In this study, a novel N-CQDs/Bi2WO6 was synthesized through a facile hydrothermal method. Multiple techniques were applied to investigate the structures, morphologies, optical and electronic properties and photocatalytic performance of as-prepared samples. The results indicated that the hybrid materials were formed with N-CQDs attached on the surface of sphere-like Bi2WO6. The photocatalytic activity of N-CQDs/Bi2WO6 materials was evaluated sufficiently by using tetracycline (TC) as target organic pollutant. N-CQDs/Bi2WO6-5 displayed superior photocatalytic efficiency with nearly 97% removal of TC in 25min and 86.37% mineralization in 90min. The degradation reaction coefficient (kobs) was approximately two times higher than pure Bi2WO6 as a result of the synergistic effects of N-CQDs and Bi2WO6. Increased light harvesting capacity, excellent electron transfer ability and improved molecular oxygen activation ability were obtained in N-CQDs/Bi2WO6 hybrid materials caused by N-CQDs. The present study demonstrated that N-CQDs modification was an effective way to improve photocatalytic efficiency, which can be extended to a general strategy for other semiconductors. The study indicated that novel N-CQDs/Bi2WO6 has a great potential for rapid and efficient treatment of organic pollutants in water.
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Affiliation(s)
- Jin Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Xingzhong Yuan
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
| | - Longbo Jiang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Zhibin Wu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Xiaohong Chen
- Mobile E-business 2011 Collaborative Innovation Center of Hunan Province, Hunan University of Commerce, Changsha 410205, PR China
| | - Hou Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Hui Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
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33
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Li S, Hu S, Jiang W, Liu Y, Liu J, Wang Z. Facile synthesis of flower-like Ag 3 VO 4 /Bi 2 WO 6 heterojunction with enhanced visible-light photocatalytic activity. J Colloid Interface Sci 2017; 501:156-163. [DOI: 10.1016/j.jcis.2017.04.057] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Revised: 04/14/2017] [Accepted: 04/19/2017] [Indexed: 10/19/2022]
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34
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Xu L, Ma L, Xu X, Zhou X, Zhang L. Cationic Surfactant-assisted Preparation and Characterization of Novel Hierarchical SnS Hollow Microflowers. CHEM LETT 2016. [DOI: 10.1246/cl.160046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Limei Xu
- School of Chemistry and Chemical Engineering, Institute of Physical Chemistry, Lingnan Normal University
| | - Lin Ma
- School of Chemistry and Chemical Engineering, Institute of Physical Chemistry, Lingnan Normal University
| | - Xuyao Xu
- School of Chemistry and Chemical Engineering, Institute of Physical Chemistry, Lingnan Normal University
| | - Xiaoping Zhou
- School of Chemistry and Chemical Engineering, Institute of Physical Chemistry, Lingnan Normal University
| | - Lingling Zhang
- School of Chemistry and Chemical Engineering, Institute of Physical Chemistry, Lingnan Normal University
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35
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Chen L, Meng D, Wu X, Wang A, Wang J, Yu M, Liang Y. Enhanced visible light photocatalytic performances of self-assembled hierarchically structured BiVO4/Bi2WO6 heterojunction composites with different morphologies. RSC Adv 2016. [DOI: 10.1039/c6ra08685c] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A possible mechanism for enhanced photocatalytic activity over self-assembled hierarchical BiVO4/Bi2WO6 composites was proposed according to calculated energy band positions.
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Affiliation(s)
- Long Chen
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan
- P. R. China
| | - Dawei Meng
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan
- P. R. China
| | - Xiuling Wu
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan
- P. R. China
| | - Anqi Wang
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan
- P. R. China
| | - Junxia Wang
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan
- P. R. China
| | - Meihua Yu
- School of Materials Science and Engineering
- Guangxi University
- Nanning
- P. R. China
| | - Yujun Liang
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan
- P. R. China
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