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Wang W, Wang Z, Xu B, Zhang Y, Yang L, Wu Y, Song G. Enhanced catalytic performance of CuCr/ZSM-5 catalyst by chemical vapour deposition for trichloroethylene oxidation. ENVIRONMENTAL TECHNOLOGY 2024; 45:1569-1580. [PMID: 36547006 DOI: 10.1080/09593330.2022.2148566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 11/11/2022] [Indexed: 06/17/2023]
Abstract
The CuCr mixed oxides catalysts supported on ZSM-5 zeolite (CuCr/ZSM-5) were synthesized via metal organic chemical vapour deposition (MOCVD) method for catalytic oxidation of trichloroethylene (TCE). SEM, XRD, BET, H2-TPR, NH3-TPD and XPS were tested. The active components were dispersed uniformly over the surface of ZSM-5 zeolite. The catalytic experimental results exhibited that the CuCr/ZSM-5 exhibited the best catalytic performance for TCE oxidation with 90% of TCE at 338°C and the concentration of C2Cl4 decreased compared with Cu/ZSM-5 and Cr/ZSM-5. The possible reason is that CuCr/ZSM-5 has superior reducibility, higher Cu2+ surface concentration as well as more surface oxygen.
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Affiliation(s)
- Wenyan Wang
- School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, People's Republic of China
| | - Zhen Wang
- School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, People's Republic of China
| | - Bing Xu
- School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, People's Republic of China
| | - Yong Zhang
- School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, People's Republic of China
| | - Lin Yang
- School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, People's Republic of China
| | - Yixiao Wu
- School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, People's Republic of China
| | - Guangsen Song
- School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, People's Republic of China
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Albukhari SM, Al-Hajji LA, Ismail AA. Minimizing CO 2 emissions by photocatalytic CO 2 reduction to CH 3OH over Li 2MnO 3/WO 3 heterostructures under visible illumination. ENVIRONMENTAL RESEARCH 2024; 241:117573. [PMID: 37956755 DOI: 10.1016/j.envres.2023.117573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/16/2023] [Accepted: 10/28/2023] [Indexed: 11/15/2023]
Abstract
Photocatalytic CO2 reduction to valuable fuels has proved to be a favourable process to produce renewable energy and reduce CO2 emissions, which mostly depends on designing effective photocatalysts with the rapid separation rate of charge carriers. In this contribution, mesoporous n-n heterojunction Li2MnO3/WO3 nanocomposites were designed via a simplistic sol-gel process for CO2 reduction utilizing visible illumination (λ > 420 nm). XRD and TEM measurements confirmed the synthesized Li2MnO3/WO3 nanocomposite is a monoclinic structure, and its particle size is 25 ± 5 nm. The obtained Li2MnO3/WO3 exhibited narrower bandgap energy (1.74 eV), larger surface area (212 m2g-1), exceedingly visible absorbing, and lower recombination of electron and hole. The yield of CH3OH was determined about 198, 871, 1140, 1550 and 1570 mmolg-1 for bare WO3 and 5%, 10%, 15% and 20% Li2MnO3/WO3 nanocomposites, respectively. These results evidenced that the 15% Li2MnO3/WO3 photocatalyst exhibited the best reduction ability compared to other nanocomposites. The CO2 reduction over 15% Li2MnO3/WO3 photocatalyst achieved a maximal CO2 conversion with the substantially boosted CH3OH, i.e., 1550 mmolg-1 after 9 h, which was enhanced 7.8 folds great than of WO3 NPs. Mesoporous Li2MnO3/WO3 nanocomposites, in comparison with bare WO3 NPs, created more active sites for facilitating CO2 and had a specific electric field to more effectively separate charge carriers. The Li2MnO3/WO3 photocatalyst has superior photostability during the continuous reduction of CO2 for 45 h with no remarkable decrease. The possible direct S-scheme mechanism for electron transfer over Li2MnO3/WO3 photocatalyst with the enhanced CO2 reduction ability was discussed. The present work demonstrates an avenue for building highly effective heterostructure photocatalysts in solar-energy-induced potential applications.
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Affiliation(s)
- Soha M Albukhari
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Kingdom of Saudi Arabia.
| | - L A Al-Hajji
- Nanotechnology and Advanced Materials Program, Energy & Building Research Center, Kuwait Institute for Scientific Research (KISR), P.O. Box 24885, Safat, 13109, Kuwait
| | - Adel A Ismail
- Nanotechnology and Advanced Materials Program, Energy & Building Research Center, Kuwait Institute for Scientific Research (KISR), P.O. Box 24885, Safat, 13109, Kuwait.
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Cao J, Zhou S, Cai J, Han J, Liu J, Li R, Huang M. In situ fabrication of Z-scheme C 3N 4/Ti 3C 2/CdS for efficient photocatalytic hydrogen peroxide production. Phys Chem Chem Phys 2023; 25:25734-25745. [PMID: 37723973 DOI: 10.1039/d3cp01758c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
Photocatalysis is a potential technology to produce hydrogen peroxide with low energy consumption and no pollution. However, when using traditional photocatalysts it is hard to meet the requirements of wide visible light absorption, high carrier separation rate and sufficient active sites. Graphitic carbon nitride (g-C3N4) has great potential in the photocatalytic production of hydrogen peroxide, but its photocatalytic performance is limited by a high carrier recombination ratio. Here, we fabricated the Z-Scheme heterojunction of C3N4/Ti3C2/CdS in situ. The large specific surface area of C3N4 can provide plenty of reactive sites, and the absorption efficiency under visible light is improved with the addition of Ti3C2 and CdS. The better conductivity of Ti3C2 reduces the charge transfer resistance. With the increase of surface charge carriers, the width of the space charge region decreases and the photocurrent density increases significantly. Under visible light irradiation, the H2O2 yield of the ternary photocatalyst reaches 256 μM L-1 h-1, which is about 6 times that of pristine C3N4. After three cycles, the high photocatalytic efficiency can still be maintained. In this paper, the reaction mechanism of photocatalytic hydrogen peroxide production by the C3N4/Ti3C2/CdS composite material is proposed through an in-depth study of energy band theory, which provides a new reference for the design and preparation of high-performance materials for photocatalytic hydrogen peroxide production.
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Affiliation(s)
- Jianrui Cao
- International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Key Lab of Informational Opto-Electronical Materials and Apparatus, School of Physics and Electronics, Henan University, Kaifeng, 475004, China.
| | - Suyu Zhou
- International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Key Lab of Informational Opto-Electronical Materials and Apparatus, School of Physics and Electronics, Henan University, Kaifeng, 475004, China.
| | - Junhao Cai
- International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Key Lab of Informational Opto-Electronical Materials and Apparatus, School of Physics and Electronics, Henan University, Kaifeng, 475004, China.
| | - Junhe Han
- International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Key Lab of Informational Opto-Electronical Materials and Apparatus, School of Physics and Electronics, Henan University, Kaifeng, 475004, China.
| | - Junhui Liu
- International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Key Lab of Informational Opto-Electronical Materials and Apparatus, School of Physics and Electronics, Henan University, Kaifeng, 475004, China.
| | - Ruoping Li
- International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Key Lab of Informational Opto-Electronical Materials and Apparatus, School of Physics and Electronics, Henan University, Kaifeng, 475004, China.
| | - Mingju Huang
- International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Key Lab of Informational Opto-Electronical Materials and Apparatus, School of Physics and Electronics, Henan University, Kaifeng, 475004, China.
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Alajmi BM, Basaleh AS, Ismail AA, Mohamed RM. Bi2S3 incorporated mesoporous ZrO2 networks as an effective photocatalyst for photocatalytic oxidation of thiophene. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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Li H, Wang J, Yue D, Wang J, Tang C, Zhang L. The Adsorption Behaviors and Mechanisms of Humic Substances by Thermally Oxidized Graphitic Carbon Nitride. TOXICS 2023; 11:369. [PMID: 37112596 PMCID: PMC10142187 DOI: 10.3390/toxics11040369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/06/2023] [Accepted: 04/10/2023] [Indexed: 06/19/2023]
Abstract
Thermal oxidation is efficient for enhancing the photocatalysis performance of graphitic carbon nitride (g-C3N4), while its effect on adsorption performance has not been fully studied, which is crucial to the application of g-C3N4 as adsorbents and photocatalysts. In this study, thermal oxidation was used to prepare sheet-like g-C3N4 (TCN), and its application for adsorption of humic acids (HA) and fulvic acids (FA) was evaluated. The results showed that thermal oxidation clearly affected the properties of TCN. After thermal oxidation, the adsorption performance of TCN was enhanced significantly, and the adsorption amount of HA increased from 63.23 (the bulk g-C3N4) to 145.35 mg/g [TCN prepared at 600 °C (TCN-600)]. Based on fitting results using the Sips model, the maximum adsorption amounts of TCN-600 for HA and FA were 327.88 and 213.58 mg/g, respectively. The adsorption for HA and FA was markedly affected by pH, alkaline, and alkaline earth metals due to electrostatic interactions. The major adsorption mechanisms included electrostatic interactions, π-π interactions, hydrogen bonding, along with a special pH-dependent conformation (for HA). These findings implied that TCN prepared from environmental-friendly thermal oxidation showed promising prospects for humic substances (HSs) adsorption in natural water and wastewater.
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Affiliation(s)
- Hongxin Li
- School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Jianlong Wang
- School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Dongbei Yue
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Jianchao Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
| | - Chu Tang
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Lingyue Zhang
- School of Department of Civil Engineering, The University of Hong Kong, Pokfulam 999077, Hong Kong SAR, China
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Alzahrani KA, Ismail AA, Alahmadi N. Heterojunction of CuMn2O4/CeO2 nanocomposites for promoted photocatalytic H2 evolution under visible light. J Taiwan Inst Chem Eng 2023. [DOI: 10.1016/j.jtice.2023.104692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Alzahrani KA, Ismail AA. Enhanced photocatalytic performances of highly efficient perovskite BaSnO3 nanorods decorated by CuMn2O4 nanoparticles. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Zheng J, Fan C, Li X, Yang Q, Wang D, Duan A, Pan S, Zhang B, Ding J, Rong S, Yin H. Effective mineralization and detoxification of tetracycline hydrochloride enabled by oxygen vacancies in g-C3N4/ LDH composites. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Tashkandi NY, Albukhari SM, Ismail AA. Mesoporous BiVO 4/TiO 2 heterojunction: enhanced photoabsorption and photocatalytic ability through promoted charge transfer. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:78472-78482. [PMID: 35697983 DOI: 10.1007/s11356-022-21336-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/03/2022] [Indexed: 06/15/2023]
Abstract
BiVO4 has been constructed into heterojunctions with TiO2 to boost the photocatalytic ability under visible illumination. Here, mesoporous BiVO4/TiO2 nanocomposites have been fabricated by a facile sol-gel approach utilizing nonionic surfactant and addressed for morphological, optical, structural, and degradation of ciprofloxacin (CIP) in water under visible illumination as an antibiotic pollutant model. The TEM images demonstrated that the TiO2 NPs are homogenous in terms of shape and size (15 ± 5 nm). The introduction of BiVO4 into mesoporous TiO2 could effectively enhance the rapid separation efficiency of the photoinduced carriers and optical absorption. The 3%BiVO4/TiO2 photocatalyst possessed the best degradation efficiency (100%) within 60 min which was promoted 20-folds larger than TiO2 NPs (5%). 3%BiVO4/TiO2 nanocomposite exhibited the fastest degradation rate (2.15 × 10-2 min-1), which was 40 times faster than bare TiO2 photocatalyst (0.05 × 10-2 min-1). The enhanced photocatalytic ability originated from superior charge separation characteristics and high solar energy absorption in mesopore structures. The recombination rate and mobility of charge carriers were characterized utilizing photoluminescence (PL) and photoelectrochemical measurements. This work highlights the advantages of mesoporous heterojunction BiVO4/TiO2 nanocomposites for photocatalytic performances and provides a multilateral route to design an effective wide-spectrum response photocatalyst for the development of comparable materials. The photocatalytic mechanism for degradation CIP over BiVO4/TiO2 was discussed in detail..
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Affiliation(s)
- Nada Y Tashkandi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Soha M Albukhari
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Adel A Ismail
- Nanotechnology and Advanced Materials Program, Energy and Building Research Center, Kuwait Institute for Scientific Research (KISR), P.O. Box 24885, 13109, Safat, Kuwait.
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Visible-light driven of heterostructured LaFeO3/TiO2 photocatalysts for degradation of antibiotics: Ciprofloxacin as case study. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114078] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Shaikh B, Bhatti MA, Shah AA, Tahira A, Shah AK, Usto A, Aftab U, Bukhari SI, Alshehri S, Shah Bukhari SNU, Tonezzer M, Vigolo B, Ibhupoto ZH. Mn 3O 4@ZnO Hybrid Material: An Excellent Photocatalyst for the Degradation of Synthetic Dyes including Methylene Blue, Methyl Orange and Malachite Green. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3754. [PMID: 36364529 PMCID: PMC9657031 DOI: 10.3390/nano12213754] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/13/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
In this study, we synthesized hybrid systems based on manganese oxide@zinc oxide (Mn3O4@ZnO), using sol gel and hydrothermal methods. The hybrid materials exhibited hierarchical morphologies and structures characterized by the hexagonal phase of ZnO and the tetragonal phase of Mn3O4. The hybrid materials were tested for degradation of methylene blue (MB), methyl orange (MO), and malachite green (MG) under ultraviolet (UV) light illumination. The aim of this work was to observe the effect of various amounts of Mn3O4 in enhancing the photocatalytic properties of ZnO-based hybrid structures towards the degradation of MB, MO and MG. The ZnO photocatalyst showed better performance with an increasing amount of Mn3O4, and the degradation efficiency for the hybrid material containing the maximum amount of Mn3O4 was found to be 94.59%, 89.99%, and 97.40% for MB, MO and MG, respectively. The improvement in the performance of hybrid materials can be attributed to the high charge separation rate of electron-hole pairs, the co-catalytic role, the large number of catalytic sites, and the synergy for the production of high quantities of oxidizing radicals. The performance obtained from the various Mn3O4@ZnO hybrid materials suggest that Mn3O4 can be considered an effective co-catalyst for a wide range of photocatalytic materials such as titanium dioxide, tin oxide, and carbon-based materials, in developing practical hybrid photocatalysts for the degradation of dyes and for wastewater treatment.
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Affiliation(s)
- Benazir Shaikh
- Institute of Environmental Sciences, University of Sindh, Jamshoro 76080, Pakistan
| | - Muhammad Ali Bhatti
- Institute of Environmental Sciences, University of Sindh, Jamshoro 76080, Pakistan
| | - Aqeel Ahmed Shah
- Wet Chemistry Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Aneela Tahira
- Dr. M.A Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan
| | - Abdul Karim Shah
- Department of Chemical Engineering, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Azam Usto
- Department of Chemical Engineering, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Umair Aftab
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology, Jamshoro 7680, Pakistan
| | - Sarah I. Bukhari
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Syed Nizam Uddin Shah Bukhari
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, School of Material Science, Beijing University of Chemical Technology, Beijing 100029, China
- Department of Basic Science and Humanities, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Matteo Tonezzer
- IMEM-CNR, Sede di Trento-FBK, Via alla Cascata 56/C, 38123 Trento, Italy
| | - Brigitte Vigolo
- Institut Jean Lamour, Université de Lorraine, CNRS, IJL, F-54000 Nancy, France
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Mesoporous titania accommodated with In2O3 nanoparticles as a superior photocatalyst for degradation ciprofloxacin antibiotic. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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