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Tolan DA, El-Sawaf AK, Alhindawy IG, Ismael MH, Nassar AA, El-Nahas AM, Maize M, Elshehy EA, El-Khouly ME. Effect of bismuth doping on the crystal structure and photocatalytic activity of titanium oxide. RSC Adv 2023; 13:25081-25092. [PMID: 37622010 PMCID: PMC10445215 DOI: 10.1039/d3ra04034h] [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: 06/15/2023] [Accepted: 08/08/2023] [Indexed: 08/26/2023] Open
Abstract
The doping of TiO2 with metals and non-metals is considered one of the most significant approaches to improve its photocatalytic efficiency. In this study, the photodegradation of methyl orange (MO) was examined in relation to the impact of Bi-doping of TiO2. The doped TiO2 with various concentrations of metal was successfully synthesized by a one-step hydrothermal method and characterized using X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM), and UV-vis spectroscopy. The XRD results revealed that the anatase phase, with an average crystallite size of 16.2 nm, was the main phase of TiO2. According to the anatase texture results, it was found that the doping of TiO2 increased the specific surface area for Bi2O3@TiO2 without a change in the crystal structure or the crystal phase of TiO2. Also, XPS analysis confirmed the formation of Ti4+ and Ti3+ as a result of doping with Bi. The activities of both pure TiO2 and Bi-doped TiO2 were tested to study their ability to decolorize MO dye in an aqueous solution. The photocatalytic degradation of MO over Bi2O3@TiO2 reached 98.21%, which was much higher than the 42% achieved by pure TiO2. Doping TiO2 with Bi increased its visible-light absorption as Bi-doping generated a new intermediate energy level below the CB edge of the TiO2 orbitals, causing a shift in the band gap from the UV to the visible region, thus enhancing its photocatalytic efficiency. In addition, the effects of the initial pH, initial pollutant concentration, and contact time were examined and discussed.
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Affiliation(s)
- Dina A Tolan
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | - Ayman K El-Sawaf
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | | | | | - Amal A Nassar
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia
| | - Ahmed M El-Nahas
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | - Mai Maize
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | | | - Mohamed E El-Khouly
- Institute of Basic and Applied Sciences, Egypt-Japan University of Science and Technology (E-JUST) Alexandria 21934 Egypt
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2
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Ellouzi I, El Hajjaji S, Harir M, Schmitt-Kopplin P, Robert D, Laânab L. Synthesis of new C,N,S,Fe-multidoping nanoparticles with potential photochemical response. J DISPER SCI TECHNOL 2022. [DOI: 10.1080/01932691.2022.2065292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Imane Ellouzi
- Laboratory of Spectroscopy, Molecular Modeling, Materials, Nanomaterials, Water and Environment, CERNE2D, Faculty of Sciences, Mohammed V University, Rabat, Morocco
| | - Souad El Hajjaji
- Laboratory of Spectroscopy, Molecular Modeling, Materials, Nanomaterials, Water and Environment, CERNE2D, Faculty of Sciences, Mohammed V University, Rabat, Morocco
| | - Mourad Harir
- Research Unit Analytical BioGeoChemistry, Helmholtz Munich, Neuherberg, Germany
- Chair Analyt Food Chem, Technical University Munich, Freising, Germany
| | - Philippe Schmitt-Kopplin
- Research Unit Analytical BioGeoChemistry, Helmholtz Munich, Neuherberg, Germany
- Chair Analyt Food Chem, Technical University Munich, Freising, Germany
| | - Didier Robert
- Institut de Chimie et Procedes pour l'Energie, L'Environnement et la Santé (ICPEES), CNRS-UMR7515-University of Strasbourg, Saint-Avold Antenna, Université de Lorraine, Saint-Avold, France
| | - Larbi Laânab
- Laboratory of Conception and Systems, Faculty of Sciences, Rabat, Morocco
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3
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Efficient Dye Contaminant Elimination and Simultaneously Electricity Production via a Bi-Doped TiO 2 Photocatalytic Fuel Cell. NANOMATERIALS 2022; 12:nano12020210. [PMID: 35055228 PMCID: PMC8778080 DOI: 10.3390/nano12020210] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/06/2022] [Accepted: 01/07/2022] [Indexed: 11/16/2022]
Abstract
TiO2 develops a higher efficiency when doping Bi into it by increasing the visible light absorption and inhibiting the recombination of photogenerated charges. Herein, a highly efficient Bi doped TiO2 photoanode was fabricated via a one-step modified sol-gel method and a screen-printing technique for the anode of photocatalytic fuel cell (PFC). A maximum degradation rate of 91.2% of Rhodamine B (RhB) and of 89% after being repeated 5 times with only 2% lost reflected an enhanced PFC performance and demonstrated an excellent stability under visible-light irradiation. The excellent degradation performance was attributed to the enhanced visible-light response and decreased electron-hole recombination rate. Meanwhile, an excellent linear correlation was observed between the efficient photocurrent of PFC and the chemical oxygen demand of solution when RhB is sufficient.
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4
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Xiao G, Yin Y, Zheng W, Dai M, Afewerki S, Chen A, Zhang J, Zhang Y, Zhang W, Zhang YS. Bi/Ti-phenolic network induced biomimetic synthesis of mesoporous hierarchical bimetallic hybrid nanocatalysts with enhanced visible-light photocatalytic performance. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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5
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Noor S, Sajjad S, Leghari SAK, Flox C, Ahmad S. Competitive role of nitrogen functionalities of N doped GO and sensitizing effect of Bi 2O 3 QDs on TiO 2 for water remediation. J Environ Sci (China) 2021; 108:107-119. [PMID: 34465425 DOI: 10.1016/j.jes.2021.02.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 06/13/2023]
Abstract
The promising solar irradiated photocatalyst by pairing of bismuth oxide quantum dots (BQDs) doped TiO2 with nitrogen doped graphene oxide (NGO) nanocomposite (NGO/BQDs-TiO2) was fabricated. It was used for degradation of organic pollutants like 2,4-dichlorophenol (2,4-DCP) and stable dyes, i.e. Rhodamine B and Congo Red. X-ray diffraction (XRD) profile of NGO showed reduction in oxygenic functional groups and restoring of graphitic crystal structure. The characteristic diffraction peaks of TiO2 and its composites showed crystalline anatase TiO2. Morphological images represent spherical shaped TiO2 evenly covered with BQDs spread on NGO sheet. The surface linkages of NO-O-Ti, C-O-Ti, Bi-O-Ti and vibrational modes are observed by Fourier transform infrared spectroscopy (FTIR) and Raman studies. BQDs and NGO modified TiO2 results into red shifting in visible region as studied in diffused reflectance spectroscopy (DRS). NGO and BQDs in TiO2 are linked with defect centers which reduced the recombination of free charge carriers by quenching of photoluminescence (PL) intensities. X-ray photoelectron spectroscopy (XPS) shows that no peak related to C-O in NGO/BQDs-TiO2 is observed. This indicated that doping of nitrogen into GO has reduced some oxygen functional groups. Nitrogen functionalities in NGO and photosensitizing effect of BQDs in ternary composite have improved photocatalytic activity against organic pollutants. Intermediate byproducts during photo degradation process of 2,4-DCP were studied through high performance liquid chromatography (HPLC). Study of radical scavengers indicated that O2·- has significant role for degradation of 2,4-DCP. Our investigations propose that fabricated nanohybrid architecture has potential for degradation of environmental pollutions.
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Affiliation(s)
- Saima Noor
- International Islamic University, Islamabad 44000, Pakistan; Department of Chemistry and Materials Science, Aalto University, Espoo 16100, Fl-00076, Finland
| | - Shamaila Sajjad
- International Islamic University, Islamabad 44000, Pakistan.
| | | | - Cristina Flox
- Department of Chemistry and Materials Science, Aalto University, Espoo 16100, Fl-00076, Finland
| | - Saeed Ahmad
- Department of Applied Physics, Aalto University, Espoo 15100, Fl-00076, Finland
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6
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Chakinala N, Gogate PR, Chakinala AG. Highly efficient bi-metallic bismuth-silver doped TiO2 photocatalyst for dye degradation. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-021-0890-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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7
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Yuqing H, Qiaoying L, Shenyuan B, Yufeng L, Zhipeng G, Jinlong Z, Baozhu T. Z-scheme heterostructure BiOCl-Ag-AgBr with enhanced sunlight-driven photocatalytic activity in simultaneous removal of Cr6+ and phenol contaminants. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.06.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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8
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Cherifi Y, Barras A, Addad A, Ouddane B, Roussel P, Chaouchi A, Szunerits S, Boukherroub R. Simultaneous photocatalytic Cr(VI) reduction and phenol degradation over copper sulphide-reduced graphene oxide nanocomposite under visible light irradiation: Performance and reaction mechanism. CHEMOSPHERE 2021; 268:128798. [PMID: 33153848 DOI: 10.1016/j.chemosphere.2020.128798] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
The contamination of water by synthetic organic molecules and trace metals is a growing challenge, in spite of the enormous research efforts being made in the field of water treatment. In this study, reduced graphene oxide-copper sulphide (rGO-CuS) nanocomposites of different rGO/CuS (2/1, 1/1, 1/2) molar ratios were fabricated via a facile one-step hydrothermal method. The nanocomposite materials, named hereafter as 2rGO-CuS, rGO-CuS and rGO-2CuS, were characterized using various analytical techniques, including X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), energy dispersive X-ray (EDX) spectroscopy, X-ray photoelectron spectroscopy (XPS) and UV-visible spectrophotometry. The photocatalytic performance of the nanocomposites was assessed under visible light irradiation (λ > 420 nm) for the simultaneous photocatalytic reduction of Cr(VI) and phenol degradation. It was found that rGO-2CuS achieved a remarkable enhancement of the photocatalytic activity among the prepared nanocomposites for the degradation of phenol and reduction of Cr(VI). Therefore, the simultaneous photocatalytic phenol degradation and Cr(VI) reduction over rGO-2CuS sample was further investigated. The experimental results revealed that rGO-2CuS catalyst maintained good degradation efficacy of mixed pollutants after 6 runs and dissolved oxygen was found to be essential to promote Cr(VI) reduction and phenol degradation. A detailed photocatalytic activity under visible light irradiation mechanism was proposed based on quenching experiments and fluorescence measurements.
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Affiliation(s)
- Yacine Cherifi
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520 - IEMN, F-59000, Lille, France; Laboratoire de Chimie Appliquée et Génie Chimique de l'Université Mouloud Mammeri de Tizi-Ouzou, Algeria
| | - Alexandre Barras
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520 - IEMN, F-59000, Lille, France
| | - Ahmed Addad
- Univ. Lille, CNRS, UMR 8207 - UMET, F-59000, Lille, France
| | - Baghdad Ouddane
- Univ. Lille, UMR CNRS 8516 - LASIRE Laboratoire Avancé de Spectroscopie pour les Interactions, la Réactivité et l'Environnement, F-59655, Villeneuve d'Ascq, France
| | - Pascal Roussel
- Univ. Lille, CNRS, ENSCL, Centrale Lille, Univ. Artois, UMR8181, UCCS-Unité de Catalyse et Chimie du Solide, Lille, F-59000, France
| | - Ahcène Chaouchi
- Laboratoire de Chimie Appliquée et Génie Chimique de l'Université Mouloud Mammeri de Tizi-Ouzou, Algeria
| | - Sabine Szunerits
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520 - IEMN, F-59000, Lille, France
| | - Rabah Boukherroub
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520 - IEMN, F-59000, Lille, France.
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9
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Nakajima T, Miseki Y, Tateno H, Tsuchiya T, Sayama K. Acid-Resistant BiVO 4 Photoanodes: Insolubility Control by Solvents and Weak W Diffusion in the Lattice. ACS APPLIED MATERIALS & INTERFACES 2021; 13:12079-12090. [PMID: 33660498 DOI: 10.1021/acsami.1c00458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We have revealed for the first time that BiVO4 photoanodes can be used even in strong acid media by mixing organic solvents into the electrolyte and depositing multilayers with a WO3 bottom layer. In general, the BiVO4 photoanodes are photocorrosive, especially in acid solutions. However, this shortcoming has been overcome using a combination of the two aforementioned modifications. We deduced that the contribution of each mixing organic solvent for the anti-photocorrosion of BiVO4 in sulfuric acid solutions can be evaluated on the basis of a new empirical indicator that incorporates molecular density, the Hansen solubility parameter, and molecular polarizability. Acetone and tert-butyl alcohol were especially promising solvents for stabilizing BiVO4 in acid media. We confirmed that the mixed organic solvents stabilized surface-emergent Bi oxide species as a passivation layer, which was generated via multilayering with a WO3 bottom layer. During heat treatment in the fabrication process, W weakly diffused into the BiVO4 layer and a Bi oxide layer was formed on the outermost surface because of the Bi segregation that arose from the charge compensation between W6+ and V5+ in the BiVO4 lattice. The surface Bi oxide layer, which was protected by the mixed organic solvents, steadily served as a passivation layer for anti-photocorrosion of the underlying BiVO4 layer. We have confirmed that the BiVO4/WO3 photoanodes in acetone-mixed aqueous sulfuric acid solution reliably functioned for a photoelectrochemical reaction under simulated sunlight illumination, and photoelectrochemical production of S2O82- ions was confirmed under light irradiation at λ > 480 nm. These results suggest that the BiVO4-based photoanodes have significant potential for use in acid media in conjunction with very straightforward modifications.
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Affiliation(s)
- Tomohiko Nakajima
- Advanced Coating Technology Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Yugo Miseki
- Global Zero Emission Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Hiroyuki Tateno
- Energy Process Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba West 5, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Tetsuo Tsuchiya
- Advanced Coating Technology Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Kazuhiro Sayama
- Global Zero Emission Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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10
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Efficient silver nanocluster photocatalyst for simultaneous methyl orange/4-chlorophenol oxidation and Cr(VI) reduction. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.06.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Wang R, Xu M, Xie J, Ye S, Song X. A spherical TiO2-Bi2WO6 composite photocatalyst for visible-light photocatalytic degradation of ethylene. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125048] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Ma Y, Yang X, Gao G, Yan Z, Su H, Zhang B, Lei Y, Zhang Y. Photocatalytic partial oxidation of methanol to methyl formate under visible light irradiation on Bi-doped TiO 2 via tuning band structure and surface hydroxyls. RSC Adv 2020; 10:31442-31452. [PMID: 35520665 PMCID: PMC9056498 DOI: 10.1039/d0ra06309f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 08/20/2020] [Indexed: 12/21/2022] Open
Abstract
Preparing visible light responsive catalysts for partial oxidation of methanol to methyl formate is a challenging issue. This work addresses the synthesis, characterization and theoretical calculation of Bi doped TiO2 catalysts as well as their photocatalytic performance and reaction mechanism for MF synthesis from methanol. The catalysts were prepared by a simple wet chemical method. The results of the characterization and theoretical calculation evidenced that bismuth was intercalated in the lattice of anatase by the substitution of titanium. Impurity levels were formed in the valence band, conduction band and between the two bands. The Bi 6s and 5p orbitals contributed to the formation of the impurity levels. The photo-excited electrons transited from the valence band via impurity levels, formed by Bi 6s orbitals, to the conduction band. The doping of Bi enhanced surface hydroxyls, reduced the band gaps and raised the valence band edges (VBE) of the Bi doped catalyst. The Bi doped catalysts were visible light responsive due to the reduced band gap. The surface hydroxyls were beneficial to the methanol conversion, and the rise of the VBE enhanced the redox potential of the photogenerated holes. Only moderate redox potentials and sufficient surface hydroxyls could lead to high methanol conversion and MF selectivity. This study is of great significance to the development of the photocatalytic synthesis theory and provides a green route for MF synthesis from methanol. Bi-doped titania is well studied for photocatalytic partial oxidation of methanol to methyl formate under visible light irradiation.![]()
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Affiliation(s)
- Yue Ma
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Xuzhuang Yang
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Guanjun Gao
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Zhe Yan
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Haiquan Su
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Bingbing Zhang
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Yanqiu Lei
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Yanbing Zhang
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
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13
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Hao X, Tan L, Xu Y, Wang Z, Wang X, Bai S, Ning C, Zhao J, Zhao Y, Song YF. Engineering Active Ni Sites in Ternary Layered Double Hydroxide Nanosheets for a Highly Selective Photoreduction of CO2 to CH4 under Irradiation above 500 nm. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06464] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Xiaojie Hao
- State Key Laboratory of Chemical Resource Engineering and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Ling Tan
- State Key Laboratory of Chemical Resource Engineering and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Yanqi Xu
- State Key Laboratory of Chemical Resource Engineering and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Zelin Wang
- State Key Laboratory of Chemical Resource Engineering and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Xian Wang
- State Key Laboratory of Chemical Resource Engineering and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Sha Bai
- State Key Laboratory of Chemical Resource Engineering and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Chenjun Ning
- State Key Laboratory of Chemical Resource Engineering and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Jingwen Zhao
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China
| | - Yufei Zhao
- State Key Laboratory of Chemical Resource Engineering and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Yu-Fei Song
- State Key Laboratory of Chemical Resource Engineering and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
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14
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Tian X, Zhang Y, Ma Y, Zhao Q, Han Z. Hourglass-type polyoxometalate-based crystalline materials as efficient cooperating photocatalysts for the reduction of Cr(vi) and oxidation of dyes. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00208a] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Hourglass-type polyoxometalate-based crystalline materials exhibit efficient photocatalytic activities towards simultaneous photocatalytic Cr(vi) reduction and organic MB oxidation.
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Affiliation(s)
- Xuerui Tian
- Hebei Key Laboratory of Organic Functional Molecules
- National Demonstration Center for Experimental Chemistry Education
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang
| | - Yaqi Zhang
- Hebei Key Laboratory of Organic Functional Molecules
- National Demonstration Center for Experimental Chemistry Education
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang
| | - Yuanyuan Ma
- Hebei Key Laboratory of Organic Functional Molecules
- National Demonstration Center for Experimental Chemistry Education
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang
| | - Qing Zhao
- Hebei Key Laboratory of Organic Functional Molecules
- National Demonstration Center for Experimental Chemistry Education
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang
| | - Zhangang Han
- Hebei Key Laboratory of Organic Functional Molecules
- National Demonstration Center for Experimental Chemistry Education
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang
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15
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Hao W, Li X, Qin L, Han S, Kang SZ. Facile preparation of Ti3+ self-doped TiO2 nanoparticles and their dramatic visible photocatalytic activity for the fast treatment of highly concentrated Cr(vi) effluent. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00161a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An efficient visible photocatalyst which is suitable for the rapid removal of highly concentrated Cr(vi) for environmental therapy.
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Affiliation(s)
- Weiming Hao
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
| | - Xiangqing Li
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
| | - Lixia Qin
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
| | - Sheng Han
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
| | - Shi-Zhao Kang
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
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16
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Fu H, Zhou Z, Zheng S, Xu Z, Alvarez PJJ, Yin D, Qu X, Zhu D. Dissolved Mineral Ash Generated by Vegetation Fire Is Photoactive under the Solar Spectrum. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:10453-10461. [PMID: 30092628 DOI: 10.1021/acs.est.8b03010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Vegetation fire generates vast amounts of mineral ash annually that can be readily mobilized by water or wind erosion. Little is known about the photoactivity of dissolved mineral ash in aquatic systems and its ability to mediate redox reactions of environmental pollutants. This study reports that dissolved mineral ash derived from pyrolysis of biomass is photoactive under simulated sunlight, generating reactive oxygen species. It can mediate the photoreduction of hexavalent chromium (Cr(VI)) in the presence of electron donors; for example, phenols and dissolved organic matter, at pH 4.7. The reaction kinetics followed the Langmuir-Hinshelwood model, suggesting a heterogeneous photocatalytic reaction. The enhancement of reduction efficiency was linearly correlated with the one-electron reduction potential of phenols. The synergy between dissolved mineral ash and phenols is attributed to the inhibition of electron-hole recombination. The reduction rate decreases with increasing solution pH, owing to the decreased reduction potential and surface adsorption of Cr(VI). The silicon and silicon carbide components are most likely responsible for the photocatalytic activity of dissolved mineral ash. Our results suggest that dissolved mineral ash is a natural photocatalyst that can mediate redox reactions of pollutants in sunlit aquatic systems, playing an overlooked role in natural attenuation and aquatic photochemistry.
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Affiliation(s)
- Heyun Fu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Jiangsu 210023 , China
| | - Zhicheng Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Jiangsu 210023 , China
| | - Shourong Zheng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Jiangsu 210023 , China
| | - Zhaoyi Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Jiangsu 210023 , China
| | - Pedro J J Alvarez
- Department of Civil and Environmental Engineering , Rice University , Houston Texas 77005 , United States
| | - Daqiang Yin
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering , Tongji University , Shanghai 200092 , China
| | - Xiaolei Qu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Jiangsu 210023 , China
| | - Dongqiang Zhu
- School of Urban and Environmental Sciences , Peking University , Beijing 100871 , China
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17
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Ali I, Kim JO. Visible-light-assisted photocatalytic activity of bismuth-TiO 2 nanotube composites for chromium reduction and dye degradation. CHEMOSPHERE 2018; 207:285-292. [PMID: 29803877 DOI: 10.1016/j.chemosphere.2018.05.075] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 04/22/2018] [Accepted: 05/13/2018] [Indexed: 05/27/2023]
Abstract
TiO2 nanotubes (TNTs) were synthesized on a Ti sheet using the electrochemical anodization method. Bismuth (Bi) was coupled on the anodized TNTs via hydrothermal process. We verified the effect of different Bi concentrations on the photocatalytic properties of Bi-TNT composites. The obtained samples were characterized using field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, UV-Vis diffuse reflectance spectra, and photoluminescence spectra. The Bi-TNT photocatalysts exhibited higher activities by factors of 6.6 and 3.6 toward chromium reduction and methylene blue degradation, respectively, under visible light than the pure TNTs. The Bi-TNT material was recycled to examine the stability of the catalyst. The quantum efficiency of the photocatalytic system was calculated, and the synergistic effects of bismuth modification were discussed. The Bi-TNT composites were observed to be promising for separation of photoinduced e- and h+ by decreasing charge recombination, and helped the formation of the hydroxyl radicals, h+, and superoxides used in the photocatalytic process.
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Affiliation(s)
- Imran Ali
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Jong-Oh Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
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18
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Wang Y, Ling L, Zhang W, Ding K, Yu Y, Duan W, Liu B. A Strategy to Boost H 2 Generation Ability of Metal-Organic Frameworks: Inside-Outside Decoration for the Separation of Electrons and Holes. CHEMSUSCHEM 2018; 11:666-671. [PMID: 29283214 DOI: 10.1002/cssc.201702316] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 12/27/2017] [Indexed: 06/07/2023]
Abstract
Inhibiting the recombination of electron and holes plays an essential role in photocatalytic process, particularly for metal-organic frameworks (MOFs), which had long been anticipated as high-efficient photocatalysts. Herein, we introduce a new strategy to make efficient separation of electrons and holes for the MOF-based photocatalyst, UiO-66-NH2 . At first, encapsulation of Pt nanoparticles (NPs) into UiO-66-NH2 (Pt@U6N) to shorten the electrons transport distance inside of MOF crystals, then using graphene oxide to wrap the external surface of Pt@U6N to facilitate the electrons transfer on the surface. The designed structure was found to possess superior H2 -generation ability compared to only inside or outside decorated samples, highlighting that the enhanced property strongly correlates with the inhibited recombination of electrons and holes by the inside/outside modification strategy. These findings suggest a synergistic effect of Pt NPs and graphene oxide on UiO-66-NH2 and reveal a new modification strategy to enhance the catalytic activity of the photocatalysts.
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Affiliation(s)
- Yang Wang
- Department of Chemistry, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Lianjie Ling
- Department of Chemistry, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Wei Zhang
- Department of Chemistry, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Kejian Ding
- Department of Chemistry, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Yu Yu
- Department of Chemistry, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Wubiao Duan
- Department of Chemistry, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Bo Liu
- Department of Chemistry, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China
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19
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Significantly enhanced photocatalytic performance of zinc oxide via bismuth oxybromide hybridization and the mechanism study. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1142-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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20
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Ansari Z, Saha A, Sen K. On the kinetics of block copolymer mediated palladium quantum dot synthesis: Application in reduction of Cr(VI) to Cr(III). REACT FUNCT POLYM 2017. [DOI: 10.1016/j.reactfunctpolym.2017.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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21
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Gan Q, Feng G, Liu X, Shang H, Feng C. Self-assembly of mesoporous Bi-S-TiO 2 composites for degradation of industrial dinitrotoluene solution under UV light. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:9585-9593. [PMID: 28247271 DOI: 10.1007/s11356-017-8526-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 01/30/2017] [Indexed: 06/06/2023]
Abstract
Mesoporous Bi-S-TiO2 composites were synthesized by the method combining evaporation-induced self-assembly (EISA) method with impregnation process. Characterization shows mesoporous Bi-S-TiO2 was a highly crystalline anatase, with relatively high thermal stability, large surface area (75-120 m2/g), and large mesopore (10-20 nm). The results also revealed that Bi and S species existed in Bi4+, S2-, S and S6+ forms in the mesoporous TiO2, which allow the mesoporous Bi-S-TiO2 illustrating strong absorption in the ultraviolet region, and the absorption edge shifts to the visible-light region. Photodegradation tests shown that, about 92.3% industrial aqueous dinitrotoluene (DNT) solution could be degraded by 1.5%Bi-S-TiO2 under UV irradiation for 5 h. Concentration of Bi ions and calcination temperature were found to play important roles in its mesoporous properties and photocatalytic activity.
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Affiliation(s)
- Qiang Gan
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, No.5, Zhongguancun South Street, Haidian District, Beijing, 100081, China.
| | - Guoqi Feng
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, No.5, Zhongguancun South Street, Haidian District, Beijing, 100081, China
| | - Xia Liu
- College of Science, China Agricultural University, Beijing, 100193, China
| | - Hairu Shang
- Institute of Explosives and Propellants, Beijing Institute of Technology, Beijing, 100081, China
| | - Changgen Feng
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, No.5, Zhongguancun South Street, Haidian District, Beijing, 100081, China
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22
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Pargoletti E, Mostoni S, Rassu G, Pifferi V, Meroni D, Falciola L, Davoli E, Marelli M, Cappelletti G. Zn- vs Bi-based oxides for o-toluidine photocatalytic treatment under solar light. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:8287-8296. [PMID: 28160178 DOI: 10.1007/s11356-017-8430-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 01/09/2017] [Indexed: 06/06/2023]
Abstract
The photodegradation of the highly toxic o-toluidine pollutant was deeply investigated both under UV and solar irradiations by using three different semiconductors: pure ZnO, Bi-impregnated ZnO, and Bi2O3 nanopowders (synthesized by precipitating method). All the samples were deeply characterized on structural, morphological, surface, and optical points of view. The disappearance and the relative mineralization of o-toluidine molecules were followed by linear sweep voltammetry (LSV) and total organic carbon (TOC) determinations, respectively. Hence, correlations between their physico-chemical properties and the photocatalytic performances, passing from UV to solar light, were drawn and a hypothesis on the photodegradation mechanism has been proposed, on the basis of the HPLC/MS results. Bare Bi2O3 samples, due to the exploitation of both their visible light absorption and the negligible intermediates formation, resulted to be higher performing under solar irradiation than either pure or Bi-doped ZnO nanopowders. Graphical abstract.
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Affiliation(s)
- E Pargoletti
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133, Milan, Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), via Giusti 9, 50121, Florence, Italy
| | - S Mostoni
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133, Milan, Italy
- Dipartimento di Scienza dei Materiali, Università degli Studi di Milano Bicocca, via Roberto Cozzi 55, 20125, Milan, Italy
| | - G Rassu
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133, Milan, Italy
| | - V Pifferi
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133, Milan, Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), via Giusti 9, 50121, Florence, Italy
| | - D Meroni
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133, Milan, Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), via Giusti 9, 50121, Florence, Italy
| | - L Falciola
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133, Milan, Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), via Giusti 9, 50121, Florence, Italy
| | - E Davoli
- IRCCS Istituto di Ricerche Farmacologiche "Mario Negri", Via La Masa 19, 20156, Milan, Italy
| | - M Marelli
- CNR-ISTM/ISTeM, via Fantoli 15/16, 20138, Milan, Italy
| | - G Cappelletti
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133, Milan, Italy.
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), via Giusti 9, 50121, Florence, Italy.
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23
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Jiang Y, Jin Z, Chen C, Duan W, Liu B, Chen X, Yang F, Guo J. Cerium-doped mesoporous-assembled SiO2/P25 nanocomposites with innovative visible-light sensitivity for the photocatalytic degradation of organic dyes. RSC Adv 2017. [DOI: 10.1039/c7ra00191f] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Photocatalytic mechanism for the photodegradation of organic dyes over a Ce–SiO2/P25 catalyst under visible light.
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Affiliation(s)
- Yan Jiang
- Department of Chemistry
- School of Science
- Beijing Jiaotong University
- Beijing 100044
- China
| | - Zheng Jin
- Department of Chemistry
- School of Science
- Beijing Jiaotong University
- Beijing 100044
- China
| | - Chen Chen
- Department of Chemistry
- School of Science
- Beijing Jiaotong University
- Beijing 100044
- China
| | - Wubiao Duan
- Department of Chemistry
- School of Science
- Beijing Jiaotong University
- Beijing 100044
- China
| | - Bo Liu
- Department of Chemistry
- School of Science
- Beijing Jiaotong University
- Beijing 100044
- China
| | - Xidong Chen
- Department of Chemistry
- School of Science
- Beijing Jiaotong University
- Beijing 100044
- China
| | - Feihua Yang
- State Key Laboratory of Solid Wastes Resource Utilization and Energy Saving Building Materials
- Beijing Building Materials Academy of Sciences Research
- Beijing 100041
- China
| | - Jianping Guo
- State Key Laboratory of Solid Wastes Resource Utilization and Energy Saving Building Materials
- Beijing Building Materials Academy of Sciences Research
- Beijing 100041
- China
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24
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Nursam NM, Tan JZY, Wang X, Li W, Xia F, Caruso RA. Mesoporous Nitrogen-Modified Titania with Enhanced Dye Adsorption Capacity and Visible Light Photocatalytic Activity. ChemistrySelect 2016. [DOI: 10.1002/slct.201601234] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Natalita M. Nursam
- Particulate Fluids Processing Centre, School of Chemistry; University of Melbourne; Melbourne, VIC 3010 Australia
- CSIRO Manufacturing; Clayton, VIC 3168 Australia
- Research Center for Electronics and Telecommunication; Indonesian Institute of Science; Cisitu, Bandung 40135 Indonesia
| | - Jeannie Z. Y. Tan
- Particulate Fluids Processing Centre, School of Chemistry; University of Melbourne; Melbourne, VIC 3010 Australia
- CSIRO Manufacturing; Clayton, VIC 3168 Australia
| | | | - Wei Li
- CSIRO Manufacturing; Clayton, VIC 3168 Australia
- International Iberian Nanotechnology Laboratory (INL); Avenida Mestre José Veiga Braga 4715-330 Portugal
| | - Fang Xia
- CSIRO Manufacturing; Clayton, VIC 3168 Australia
- School of Engineering and Information Technology; Murdoch University; Murdoch, Western Australia 6150 Australia
| | - Rachel A. Caruso
- Particulate Fluids Processing Centre, School of Chemistry; University of Melbourne; Melbourne, VIC 3010 Australia
- CSIRO Manufacturing; Clayton, VIC 3168 Australia
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25
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Wang Q, Shi X, Xu J, Crittenden JC, Liu E, Zhang Y, Cong Y. Highly enhanced photocatalytic reduction of Cr(VI) on AgI/TiO2 under visible light irradiation: Influence of calcination temperature. JOURNAL OF HAZARDOUS MATERIALS 2016; 307:213-220. [PMID: 26785212 DOI: 10.1016/j.jhazmat.2015.12.050] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/18/2015] [Accepted: 12/26/2015] [Indexed: 06/05/2023]
Abstract
AgI/TiO2 was prepared using a dissolution-precipitation method, followed by calcination at different temperatures (100-700°C). The as-prepared AgI/TiO2 powders were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis-DRS) and electrochemical impedance spectroscopy (EIS). The results revealed that calcination temperature significantly impacted the visible light absorption of AgI/TiO2 along with a shift from metastable γ-AgI to relatively stable β-AgI. We found that highest photocatalytic reduction rate of Cr(VI) and β-AgI content were obtained for a calcination temperature of 350°C. Furthermore, the pseudo-first order rate constant was five times that for a photocatalyst calcined at 100°C. The dramatically enhanced reduction rate of Cr(VI) was attributed to enhanced visible light absorption and greatly reduced charge transfer resistance, which eventually facilitates more efficient separation and easier transfer of photogenerated electron-hole pairs to the catalyst surface. Other experimental conditions were also carefully investigated and optimized with initial AgI loading percentage (5%), catalyst dosage (1.0g/L), coexisting organics (1.0mmol/L EDTA) and pH (1-2). The optimal AgI/TiO2 exhibited good stability with little change in activity after 5 cycles.
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Affiliation(s)
- Qi Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Xiaodong Shi
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Jianjia Xu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - John C Crittenden
- The Brook Byer Institute for Sustainable Systems and School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta,GA 30332, USA
| | - Enqin Liu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yi Zhang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yanqing Cong
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China.
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26
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Fellahi O, Barras A, Pan GH, Coffinier Y, Hadjersi T, Maamache M, Szunerits S, Boukherroub R. Reduction of Cr(VI) to Cr(III) using silicon nanowire arrays under visible light irradiation. JOURNAL OF HAZARDOUS MATERIALS 2016; 304:441-447. [PMID: 26610097 DOI: 10.1016/j.jhazmat.2015.11.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/10/2015] [Accepted: 11/12/2015] [Indexed: 06/05/2023]
Abstract
We report an efficient visible light-induced reduction of hexavalent chromium Cr(VI) to trivalent Cr(III) by direct illumination of an aqueous solution of potassium dichromate (K2Cr2O7) in the presence of hydrogenated silicon nanowires (H-SiNWs) or silicon nanowires decorated with copper nanoparticles (Cu NPs-SiNWs) as photocatalyst. The SiNW arrays investigated in this study were prepared by chemical etching of crystalline silicon in HF/AgNO3 aqueous solution. The Cu NPs were deposited on SiNW arrays via electroless deposition technique. Visible light irradiation of an aqueous solution of K2Cr2O7 (10(-4)M) in presence of H-SiNWs showed that these substrates were not efficient for Cr(VI) reduction. The reduction efficiency achieved was less than 10% after 120 min irradiation at λ>420 nm. Addition of organic acids such as citric or adipic acid in the solution accelerated Cr(VI) reduction in a concentration-dependent manner. Interestingly, Cu NPs-SiNWs was found to be a very efficient interface for the reduction of Cr(VI) to Cr(III) in absence of organic acids. Almost a full reduction of Cr(VI) was achieved by direct visible light irradiation for 140 min using this photocatalyst.
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Affiliation(s)
- Ouarda Fellahi
- Institut d'Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR CNRS 8520, Avenue Poincaré-BP 70478, 59652 Villeneuve d'Ascq Cedex, France; Centre de Recherche en Technologie des Semi-conducteurs pour l'Energétique-CRTSE 02, Bd Frantz Fanon, BP. 140, Alger 7 Merveilles, Algeria
| | - Alexandre Barras
- Institut d'Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR CNRS 8520, Avenue Poincaré-BP 70478, 59652 Villeneuve d'Ascq Cedex, France
| | - Guo-Hui Pan
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Dong Nanhu Road, Changchun 130033, China
| | - Yannick Coffinier
- Institut d'Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR CNRS 8520, Avenue Poincaré-BP 70478, 59652 Villeneuve d'Ascq Cedex, France
| | - Toufik Hadjersi
- Centre de Recherche en Technologie des Semi-conducteurs pour l'Energétique-CRTSE 02, Bd Frantz Fanon, BP. 140, Alger 7 Merveilles, Algeria
| | - Mustapha Maamache
- Laboratoire de Physique Quantique et Systèmes Dynamiques, Département de Physique, Université de Sétif, Sétif 19000, Algeria
| | - Sabine Szunerits
- Institut d'Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR CNRS 8520, Avenue Poincaré-BP 70478, 59652 Villeneuve d'Ascq Cedex, France
| | - Rabah Boukherroub
- Institut d'Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR CNRS 8520, Avenue Poincaré-BP 70478, 59652 Villeneuve d'Ascq Cedex, France.
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27
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Shao YB, Wang LH, Huang JH. ZnS/CuS nanotubes for visible light-driven photocatalytic hydrogen generation. RSC Adv 2016. [DOI: 10.1039/c6ra17046c] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ZnS/CuS nanotubes exhibit visible-light photocatalytic activity for H2 evolution without cocatalysts, resulting from the heterojunctions between ZnS and CuS nanoparticles.
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Affiliation(s)
- Yi-Biao Shao
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Long-Hao Wang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Jian-Hua Huang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
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28
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Hu T, Li H, Zhang R, Du N, Hou W. Thickness-determined photocatalytic performance of bismuth tungstate nanosheets. RSC Adv 2016. [DOI: 10.1039/c6ra03268k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The photocatalytic efficiency of Bi2WO6 nanosheets increases gradually with the ratio of specific surface area (SBET) to nanosheet thickness (H), but decreases linearly with the increase of H2 when the H is less than the light penetration depth.
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Affiliation(s)
- Tingxia Hu
- Key Laboratory for Colloid and Interface Chemistry (Ministry of Education)
- Shandong University
- Jinan 250100
- P.R. China
| | - Haiping Li
- National Engineering Research Center for Colloidal Materials
- Shandong University
- Jinan 250100
- P.R. China
| | - Renjie Zhang
- Key Laboratory for Colloid and Interface Chemistry (Ministry of Education)
- Shandong University
- Jinan 250100
- P.R. China
| | - Na Du
- Key Laboratory for Colloid and Interface Chemistry (Ministry of Education)
- Shandong University
- Jinan 250100
- P.R. China
| | - Wanguo Hou
- Key Laboratory for Colloid and Interface Chemistry (Ministry of Education)
- Shandong University
- Jinan 250100
- P.R. China
- National Engineering Research Center for Colloidal Materials
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29
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Li J, Liu X, Sun Z, Sun Y, Pan L. Novel yolk–shell structure bismuth-rich bismuth molybdate microspheres for enhanced visible light photocatalysis. J Colloid Interface Sci 2015; 452:109-115. [DOI: 10.1016/j.jcis.2015.04.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 03/28/2015] [Accepted: 04/14/2015] [Indexed: 01/27/2023]
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30
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Dai Z, Qin F, Zhao H, Tian F, Liu Y, Chen R. Time-dependent evolution of the Bi(3.64)Mo(0.36)O(6.55)/Bi2MoO6 heterostructure for enhanced photocatalytic activity via the interfacial hole migration. NANOSCALE 2015; 7:11991-9. [PMID: 26108795 DOI: 10.1039/c5nr02745d] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Hierarchical Bi(3.64)Mo(0.36)O(6.55)/Bi2MoO6 isotype heterostructures were successfully prepared via a one-pot hydrothermal route by using Bi2O3 porous nanospheres as a sacrificial template. By tuning the reaction time, the formation process of the Bi(3.64)Mo(0.36)O(6.55)/Bi2MoO6 heterostructure involving Mo etching, phase transition and anisotropic growth was clearly identified. More importantly, the Bi(3.64)Mo(0.36)O(6.55)/Bi2MoO6 heterostructure displayed remarkably enhanced photocatalytic activity for dye photodegradation than pure phase bismuth molybdate due to the efficient electron-hole separation and the interfacial photogenerated hole migration from inside the Bi(3.64)Mo(0.36)O(6.55) layer to outside the Bi2MoO6 layer. The opposite hole migration from the outer layer to the inner layer was also detected in Bi2O3/Bi2WO6 heterostructures, which resulted in the decrease of photocatalytic activity, further verifying the importance of hole migration direction. This work provides a novel route to fabricate heterostructured photocatalysts, as well as gives a strategy for mediating the charge migration to improve photocatalytic performance.
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Affiliation(s)
- Zan Dai
- Key Laboratory for Green Chemical Process of Ministry of Education and School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Xiongchu Avenue, Wuhan, 430073, PR China.
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31
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Yang J, Wang X, Yang X, Li J, Zhang X, Zhao J. Energy storage ability and anti-corrosion properties of Bi-doped TiO2 nanotube arrays. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.04.076] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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Benalioua B, Mansour M, Bentouami A, Boury B, Elandaloussi EH. The layered double hydroxide route to Bi-Zn co-doped TiO₂ with high photocatalytic activity under visible light. JOURNAL OF HAZARDOUS MATERIALS 2015; 288:158-167. [PMID: 25699677 DOI: 10.1016/j.jhazmat.2015.02.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 01/07/2015] [Accepted: 02/04/2015] [Indexed: 06/04/2023]
Abstract
In this work, a co-doped Bi-Zn-TiO₂ photocatalist is synthesized by an original synthesis route of layered double hydroxide followed by heat treatment at 670 °C. After characterization the photocatalyst efficiency is estimated by the photo-discoloration of an anionic dye (indigo carmine) under visible light and compare to TiO₂-P25 as reference material. In this new photocatalyst, anatase and ZnO wurtzite are the only identified crystalline phase, rutile and Bi₂O₃ being undetected. Moreover, the binding energy of Bi determined (XPS analysis) is different from the one of Bi in Bi₂O₃. Compared to TiO₂-P25, the absorption is red shifted (UV-vis DRS) and the Bi-Zn-TiO₂ photocatalyst showed sorption capacity toward indigo carmine higher than that TiO₂-P25. The kinetics of the photo-discoloration is faster with Bi-Zn-TiO₂ than with TiO₂-P25. Indeed, a complete discoloration is obtained after 70 min and 120 min in the presence of Bi-Zn-TiO₂ and TiO₂-P25 respectively. The identification of the responsible species on photo-discoloration was carried out in the presence of different scavengers. The study showed that the first responsible is h(+) specie with a moderate contribution of superoxide anion radical and a minor contribution of the hydroxyl radical. The material showed high stability after five uses with the same rate of photo-discoloration.
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Affiliation(s)
- Bahia Benalioua
- Laboratoire de Valorisation des Matériaux, Université de Mostaganem BP 227, Mostaganem 27000 Algeria
| | - Meriem Mansour
- Laboratoire de Valorisation des Matériaux, Université de Mostaganem BP 227, Mostaganem 27000 Algeria
| | - Abdelhadi Bentouami
- Laboratoire de Valorisation des Matériaux, Université de Mostaganem BP 227, Mostaganem 27000 Algeria.
| | - Bruno Boury
- ICG-CMOS-UMR 5253, Université Montpellier 2, Place Eugène Bataillon CC 1702, 34095 Montpellier Cedex 05, France
| | - El Hadj Elandaloussi
- Laboratoire de Valorisation des Matériaux, Université de Mostaganem BP 227, Mostaganem 27000 Algeria
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Mohapatra L, Parida KM. Dramatic activities of vanadate intercalated bismuth doped LDH for solar light photocatalysis. Phys Chem Chem Phys 2015; 16:16985-96. [PMID: 25005613 DOI: 10.1039/c4cp01665c] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To harvest solar energy efficiently, a series of Zn/Bi layered double hydroxide (LDH) photocatalysts with different molar ratios of Zn/Bi (2 : 1, 3 : 1, 4 : 1) has been synthesized by a coprecipitation method at constant pH. All the Bi doped LDH samples displayed hydrotalcite-like structure with interlayer carbonate, in which crystallinity decreases as the bismuth content increases. The Zn/Bi (4 : 1) LDH with a small amount of bismuth in the brucite layer and possessing high crystallinity was further modified hydrothermally by intercalating decavanadate and it showed high photochemical stability and photocatalytic activity for the degradation of different organic pollutants for practical applications under solar light irradiation. The structural integrity of the materials has been successfully characterized by studying their structural, morphological, electronic and optical properties by various physico-chemical techniques. The present study provided an insight into oxo-bridged MMCT of the LDH and established that the Zn(II)-O-Bi(III) units resulted in the generation of superoxide radicals which is clearly observed by the EPR technique. The ˙OH radicals formed during photocatalysis were revealed by means of the terephthalic acid fluorescence probe method. The photoelectrochemical measurement confirmed that the intercalated vanadate anion was crucial to obtain an optimal synergistic effect for the degradation of organic pollutants. The prolonged lifetime of photogenerated charges and improved charge transfer capability were confirmed by time-resolved fluorescence emission spectra. Furthermore, a detailed mechanism for the enhanced photocatalytic activity was discussed.
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Hashemzadeh F, Gaffarinejad A, Rahimi R. Porous p-NiO/n-Nb2O5 nanocomposites prepared by an EISA route with enhanced photocatalytic activity in simultaneous Cr(VI) reduction and methyl orange decolorization under visible light irradiation. JOURNAL OF HAZARDOUS MATERIALS 2015; 286:64-74. [PMID: 25557940 DOI: 10.1016/j.jhazmat.2014.12.038] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/07/2014] [Accepted: 12/20/2014] [Indexed: 06/04/2023]
Abstract
Porous NiO/Nb2O5 nanocomposites with Ni/Nb molar ratio of 0.4, 0.8 and 1.2 have been obtained via the EISA route using P123 copolymer as organic template, and are assigned as NiNb0.4, NiNb0.8 and NiNb1.2, respectively. For comparison, pure Nb2O5 sample assigned as NiNb0.0 was also synthesized by the same method. Structural and textural features of the as prepared samples were investigated by XRD, FTIR, FE-SEM, EDX, UV-vis DRS and BET techniques. The results indicated that the porous p-NiO/n-Nb2O5 junction nanocomposites were formed and coupling of NiO with Nb2O5 resulted a remarkable red shift in the optical response of the nanocomposite samples. The photocatalytic properties of the nanocomposite samples, and also synthesized pure Nb2O5 (NiNb0.0) and commercial Nb2O5 as reference catalysts were evaluated for the first time by simultaneous Cr(VI) reduction and MO decolorization in aqueous suspension under visible light irradiation at pH 2. NiNb0.4 was found to be the most active photocatalyst, which might be attributed to the extended absorption in the visible light region and the effective photogenerated electron-hole separation by the photosynergistic effects of the p-NiO/n-Nb2O5 composite powder. The photocatalytic efficiency of the most active photocatalyst, NiNb0.4, was found to be rather low for either single Cr(VI) solution or single MO solution. However, the photocatalytic reduction of Cr(VI) and photocatalytic decolorization of MO proceed more rapidly for the coexistence system of Cr(VI) and MO than for the single process, showing synergetic effect between the reduction and decolorization reactions. The effects of initial concentration of Cr(VI), MO and the initial pH value on the rate of simultaneous photoreactions over NiNb0.4 sample, were also investigated. The Cr(VI) and MO removal rates were further enhanced by increasing MO and Cr (VI) concentration to an optimal value, respectively, and/or decreasing solution pH.
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Affiliation(s)
- Fatemeh Hashemzadeh
- Young Researchers and Elite Clube, Marand Branch, Islamic Azad University, Marand, Iran.
| | - Ali Gaffarinejad
- Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
| | - Rahmatollah Rahimi
- Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
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Shi GM, Zhang B, Xu XX, Fu YH. Graphene oxide coated coordination polymer nanobelt composite material: a new type of visible light active and highly efficient photocatalyst for Cr(vi) reduction. Dalton Trans 2015; 44:11155-64. [DOI: 10.1039/c5dt01190f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
GO/CPNB was fabricated successfully, which displays excellent photocatalytic activity in visible light. Furthermore, the influence of GO on photocatalytic activity is discussed.
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Affiliation(s)
- Gui-Mei Shi
- College of Science
- Shenyang University of Technology
- Shenyang
- P. R. China
| | - Bin Zhang
- College of Science
- Shenyang University of Technology
- Shenyang
- P. R. China
| | - Xin-Xin Xu
- Department of Chemistry
- College of Science
- Northeast University
- Shenyang
- People's Republic of China
| | - Yan-Hong Fu
- College of Science
- Shenyang University of Technology
- Shenyang
- P. R. China
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36
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Huang H, Xiao K, Tian N, Guo Y, Zhang Y. Plasmon induced Au particle and surface oxidation co-decorated BiOIO3heteronanostructures with highly promoted photocatalysis and photoelectrochemical properties. RSC Adv 2015. [DOI: 10.1039/c5ra14405a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Cappelletti G, Pifferi V, Mostoni S, Falciola L, Di Bari C, Spadavecchia F, Meroni D, Davoli E, Ardizzone S. Hazardous o-toluidine mineralization by photocatalytic bismuth doped ZnO slurries. Chem Commun (Camb) 2015; 51:10459-62. [DOI: 10.1039/c5cc02620b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photocatalytic mineralization of o-toluidine in aqueous media under UV/solar irradiation was achieved by bare and bismuth doped zinc oxide nanoparticles.
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Affiliation(s)
- G. Cappelletti
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - V. Pifferi
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - S. Mostoni
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - L. Falciola
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - C. Di Bari
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - F. Spadavecchia
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - D. Meroni
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - E. Davoli
- IRCCS Istituto di Ricerche Farmacologiche “Mario Negri”
- Milano
- Italy
| | - S. Ardizzone
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
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38
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Li J, Liu X, Piao X, Sun Z, Pan L. Novel carbon sphere@Bi2MoO6core–shell structure for efficient visible light photocatalysis. RSC Adv 2015. [DOI: 10.1039/c4ra16777e] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Carbon sphere@Bi2MoO6core–shell structure composites were fabricatedviasolvothermal reaction for photocatalytic degradation of Rhodamine B under visible light irradiation.
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Affiliation(s)
- Jinliang Li
- Engineering Research Center for Nanophotonics & Advanced Instrument
- Ministry of Education
- Shanghai Key Laboratory of Magnetic Resonance
- Department of Physics
- Department of Physics
| | - Xinjuan Liu
- Institute of Coordination Bond Metrology and Engineering
- College of Materials Science and Engineering
- China Jiliang University
- Hangzhou 310018
- China
| | - Xianqing Piao
- Engineering Research Center for Nanophotonics & Advanced Instrument
- Ministry of Education
- Shanghai Key Laboratory of Magnetic Resonance
- Department of Physics
- Department of Physics
| | - Zhuo Sun
- Engineering Research Center for Nanophotonics & Advanced Instrument
- Ministry of Education
- Shanghai Key Laboratory of Magnetic Resonance
- Department of Physics
- Department of Physics
| | - Likun Pan
- Engineering Research Center for Nanophotonics & Advanced Instrument
- Ministry of Education
- Shanghai Key Laboratory of Magnetic Resonance
- Department of Physics
- Department of Physics
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39
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Li J, Liu X, Pan L, Qin W, Sun Z. Enhanced visible light photocatalytic degradation of Rhodamine B by Bi/Bi2MoO6 hollow microsphere composites. RSC Adv 2014. [DOI: 10.1039/c4ra09830g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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40
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Schneider J, Matsuoka M, Takeuchi M, Zhang J, Horiuchi Y, Anpo M, Bahnemann DW. Understanding TiO2 Photocatalysis: Mechanisms and Materials. Chem Rev 2014; 114:9919-86. [DOI: 10.1021/cr5001892] [Citation(s) in RCA: 3847] [Impact Index Per Article: 384.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jenny Schneider
- Institut
für Technische Chemie, Leibniz Universität Hannover, Callinstrasse
3, D-30167 Hannover, Germany
| | - Masaya Matsuoka
- Faculty
of Engineering, Osaka Prefecture University, 1 Gakuen-cho, Sakai Osaka 599-8531, Japan
| | - Masato Takeuchi
- Faculty
of Engineering, Osaka Prefecture University, 1 Gakuen-cho, Sakai Osaka 599-8531, Japan
| | - Jinlong Zhang
- Key
Lab for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, China
| | - Yu Horiuchi
- Faculty
of Engineering, Osaka Prefecture University, 1 Gakuen-cho, Sakai Osaka 599-8531, Japan
| | - Masakazu Anpo
- Faculty
of Engineering, Osaka Prefecture University, 1 Gakuen-cho, Sakai Osaka 599-8531, Japan
| | - Detlef W. Bahnemann
- Institut
für Technische Chemie, Leibniz Universität Hannover, Callinstrasse
3, D-30167 Hannover, Germany
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41
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Preparation of Bi-doped TiO2 nanoparticles and their visible light photocatalytic performance. CHINESE JOURNAL OF CATALYSIS 2014. [DOI: 10.1016/s1872-2067(14)60124-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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Jo YK, Kim IY, Gunjakar JL, Lee JM, Lee NS, Lee SH, Hwang SJ. Unique Properties of 2 D Layered Titanate Nanosheets as a Building Block for the Optimization of the Photocatalytic Activity and Photostability of TiO2-Based Nanohybrids. Chemistry 2014; 20:10011-9. [DOI: 10.1002/chem.201402726] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Indexed: 11/06/2022]
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43
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Sun D, Li J, He L, Zhao B, Wang T, Li R, Yin S, Feng Z, Sato T. Facile solvothermal synthesis of BiOCl–TiO2heterostructures with enhanced photocatalytic activity. CrystEngComm 2014. [DOI: 10.1039/c4ce00596a] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Ding X, Zhao K, Zhang L. Enhanced photocatalytic removal of sodium pentachlorophenate with self-doped Bi2WO6 under visible light by generating more superoxide ions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:5823-5831. [PMID: 24787282 DOI: 10.1021/es405714q] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this study, we demonstrate that the photocatalytic sodium pentachlorophenate removal efficiency of Bi2WO6 under visible light can be greatly enhanced by bismuth self-doping through a simple soft-chemical method. Density functional theory calculations and systematical characterization results revealed that bismuth self-doping did not change the redox power of photogenerated carriers but promoted the separation and transfer of photogenerated electron-hole pairs of Bi2WO6 to produce more superoxide ions, which were confirmed by photocurrent generation and electron spin resonance spectra as well as superoxide ion measurement results. We employed gas chromatography-mass spectrometry and total organic carbon analysis to probe the degradation and the mineralization processes. It was found that more superoxide ions promoted the dechlorination process to favor the subsequent benzene ring cleavage and the final mineralization of sodium pentachlorophenate during bismuth self-doped Bi2WO6 photocatalysis by producing easily decomposable quinone intermediates. This study provides new insight into the effects of photogenerated reactive species on the degradation of sodium pentachlorophenate and also sheds light on the design of highly efficient visible-light-driven photocatalysts for chlorophenol pollutant removal.
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Affiliation(s)
- Xing Ding
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental Chemistry, College of Chemistry, Central China Normal University , Wuhan 430079, People's Republic of China
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Facile hydrothermal synthesis of nanocomposite Ag@AgCl/K2Ti4O9 and photocatalytic degradation under visible light irradiation. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2013.12.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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46
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Khan Leghari SA, Sajjad S, Zhang J. A time saving and cost effective route for metal oxides activation. RSC Adv 2014. [DOI: 10.1039/c3ra46518g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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47
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Hamdi A, Ferraria A, do Rego AB, Ferreira D, Conceição D, Ferreira LV, Bouattour S. Bi–Y doped and co-doped TiO2 nanoparticles: Characterization and photocatalytic activity under visible light irradiation. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2013.09.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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48
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49
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Sun L, Zhai J, Li H, Zhao Y, Yang H, Yu H. Study of Homologous Elements: Fe, Co, and Ni Dopant Effects on the Photoreactivity of TiO2Nanosheets. ChemCatChem 2013. [DOI: 10.1002/cctc.201300879] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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50
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Reddy KH, Parida K. Fabrication, Characterization, and Photoelectrochemical Properties of Cu-Doped PbTiO3and Its Hydrogen Production Activity. ChemCatChem 2013. [DOI: 10.1002/cctc.201300462] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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