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Han Q, Wu Z, Zhou Y, Lei Y, Nie B, Yang L, Zhong W, Wang N, Zhu Y. Accelerating carrier separation to boost the photocatalytic CO 2 reduction performance of ternary heterojunction Ag-Ti 3C 2T x/ZnO catalysts. RSC Adv 2024; 14:13719-13733. [PMID: 38681837 PMCID: PMC11044907 DOI: 10.1039/d4ra01985g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 04/14/2024] [Indexed: 05/01/2024] Open
Abstract
Developing low-cost and efficient photocatalyst/co-catalyst systems that promote CO2 reduction remains a challenge. In this work, Ag-Ti3C2Tx composites were made using a self-reduction technique, and unique Ag-Ti3C2Tx/ZnO ternary heterojunction structure photocatalysts were created using an electrostatic self-assembly process. The photocatalyst's close-contact heterogeneous interface increases photogenerated carrier migration efficiency. The combination of Ti3C2Tx and Ag improves the adsorption active sites and reaction centers for ZnO, making it a key site for CO2 adsorption and activation. The best photocatalysts had CO and CH4 reduction efficiencies of 11.985 and 0.768 μmol g-1 h-1, respectively. The CO2 conversion was 3.35 times better than that of pure ZnO, which demonstrated remarkable stability even after four cycle trials with no sacrificial agent. Furthermore, in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFTS) and valence band spectroscopy were utilized to propose the photocatalytic reaction mechanism and electron transfer channels of the Ag-Ti3C2Tx/ZnO system, confirming that CHO* and CO* are the important intermediates in the generation of CH4 and CO. This study introduces a novel method for the development of new and efficient photocatalysts and reveals that Ti3C2Tx MXene is a viable co-catalyst for applications.
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Affiliation(s)
- Qilin Han
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Zhiyao Wu
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Yu Zhou
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Yongxin Lei
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Bingying Nie
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Leilei Yang
- College of Mathematics and Physics, Guangxi Minzu University Nanning 530006 China
| | - Wenbin Zhong
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Nannan Wang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Yanqiu Zhu
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
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Santos JS, Fereidooni M, Márquez V, Paz-López CV, Villanueva MS, Buijnsters JG, Praserthdam S, Praserthdam P. Photoactivity of amorphous and crystalline TiO 2 nanotube arrays (TNA) films in gas phase CO 2 reduction to methane with simultaneous H 2 production. Environ Res 2024; 244:117919. [PMID: 38103777 DOI: 10.1016/j.envres.2023.117919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/14/2023] [Accepted: 12/09/2023] [Indexed: 12/19/2023]
Abstract
This study assessed the photoactivity of amorphous and crystalline TiO2 nanotube arrays (TNA) films in gas phase CO2 reduction. The TNA photocatalysts were fabricated by titanium anodization and submitted to an annealing treatment for crystallization and/or cathodic reduction to introduce Ti3+ and oxygen vacancies into the TiO2 structure. The cathodic reduction demonstrated a significant effect on the generated photocurrent. The photoactivity of the four TNA catalysts in CO2 reduction with water vapor was evaluated under UV irradiation for 3 h, where CH4 and H2 were detected as products. The annealed sample exhibited the best performance towards methane with a production rate of 78 μmol gcat-1 h-1, followed by the amorphous film, which also exhibited an impressive formation rate of 64 μmol gcat-1 h-1. The amorphous and reduced-amorphous films exhibited outstanding photoactivity regarding H2 production (142 and 144 μmol gcat-1 h-1, respectively). The annealed catalyst also revealed a good performance for H2 production (132 μmol gcat-1 h-1) and high stability up to five reaction cycles. Molecular dynamic simulations demonstrated the changes in the band structure by introducing oxygen vacancies. The topics covered in this study contribute to the Sustainable Development Goals (SDG), involving affordable and clean energy (SDG#7) and industry, innovation, and infrastructure (SDG#9).
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Affiliation(s)
- Janaina S Santos
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Mohammad Fereidooni
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Victor Márquez
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Christian V Paz-López
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Martin S Villanueva
- Facultad de Ingeniería, Benemerita Universidad Autonoma de Puebla, Apartado Postal J-39, CP, 72570, Puebla, Mexico
| | - Josephus G Buijnsters
- Department of Precision and Microsystems Engineering, Research Group of Micro and Nano Engineering, Delft University of Technology, Mekelweg 2, 2628 CD, Delft, the Netherlands
| | - Supareak Praserthdam
- High-Performance Computing Unit, Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC-HCU), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Piyasan Praserthdam
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
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Wang C, Liang B, Tian Z, Wang N. Simultaneous preparation of ZnO/rGO composites through Zn(OH) 2 decomposition and graphite oxide reduction and their photocatalytic properties. Environ Sci Pollut Res Int 2024; 31:4881-4896. [PMID: 38108986 DOI: 10.1007/s11356-023-31459-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/06/2023] [Indexed: 12/19/2023]
Abstract
ZnO/reduced graphite oxide (rGO) composites were simultaneously prepared by the thermal reduction of graphite oxide (GO) and the decomposition of Zn(OH)2. The samples were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, photoluminescence, and DRS. Results indicate that Zn(OH)2 was heated and decomposed into ZnO at a low temperature (200 ℃), while GO was reduced to graphene. The synthesized ZnO particles were small and loaded on graphene layers. The ZnO/rGO photocatalysts exhibited excellent photocatalytic activity against methylene blue (MB) under simulated sunlight irradiation. The ZnO/50% rGO photocatalyst showed the best MB photodegradation rate of up to 99.7% within 3 min. Synchronous reaction provided an efficient, simple, and fast preparation method for ZnO/rGO composites, with an excellent solar photocatalytic degradation ability.
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Affiliation(s)
- Chong Wang
- Rare Metal Intensive Processing Engineering Research Center of Jilin Province, Changchun Normal University, Changchun, 130032, People's Republic of China.
- School of Engineering, Changchun Normal University, Changchun, 130032, People's Republic of China.
| | - Baoyan Liang
- Rare Metal Intensive Processing Engineering Research Center of Jilin Province, Changchun Normal University, Changchun, 130032, People's Republic of China
- Materials and Chemical Engineering School, Zhongyuan University of Technology, Zhengzhou, 450007, People's Republic of China
| | - Zheng Tian
- Rare Metal Intensive Processing Engineering Research Center of Jilin Province, Changchun Normal University, Changchun, 130032, People's Republic of China
- School of Engineering, Changchun Normal University, Changchun, 130032, People's Republic of China
| | - Nan Wang
- Rare Metal Intensive Processing Engineering Research Center of Jilin Province, Changchun Normal University, Changchun, 130032, People's Republic of China
- School of Engineering, Changchun Normal University, Changchun, 130032, People's Republic of China
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Roostaei T, Rahimpour MR, Zhao H, Eisapour M, Chen Z, Hu J. Recent advances and progress in biotemplate catalysts for electrochemical energy storage and conversion. Adv Colloid Interface Sci 2023; 318:102958. [PMID: 37453344 DOI: 10.1016/j.cis.2023.102958] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 06/05/2023] [Accepted: 06/30/2023] [Indexed: 07/18/2023]
Abstract
Complex structures and morphologies in nature endow materials with unexpected properties and extraordinary functions. Biotemplating is an emerging strategy for replicating nature structures to obtain materials with unique morphologies and improved properties. Recently, efforts have been made to use bio-inspired species as a template for producing morphology-controllable catalysts. Fundamental information, along with recent advances in biotemplate metal-based catalysts are presented in this review through discussions of various structures and biotemplates employed for catalyst preparation. This review also outlines the recent progress on preparation routes of biotemplate catalysts and discusses how the properties and structures of these templates play a crucial role in the final performance of metal-based catalysts. Additionally, the application of bio-based metal and metal oxide catalysts is highlighted for various key energy and environmental technologies, including photocatalysis, fuel cells, and lithium batteries. Biotemplate metal-based catalysts display high efficiency in several energy and environmental systems. Note that this review provides guidance for further research in this direction.
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Affiliation(s)
- Tayebeh Roostaei
- Department of Chemical Engineering, Shiraz University, Shiraz, Iran; Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N1N4, Canada
| | | | - Heng Zhao
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N1N4, Canada
| | - Mehdi Eisapour
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N1N4, Canada
| | - Zhangxin Chen
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N1N4, Canada; Eastern Institute for Advanced Study, Ningbo, Zhengjiang 315200, China
| | - Jinguang Hu
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N1N4, Canada.
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Mokhtar M. Mostafa M, Shawky A, Fakhruz Zaman S, Narasimharao K, Abdel Salam M, Alshehri AA, Khdary NH, Al-faifi S, Dutta Chowdhury A. Enhanced and recyclable CO2 photoreduction into methanol over S-scheme PdO/GdFeO3 heterojunction photocatalyst under visible light. J Mol Liq 2023; 377:121528. [DOI: 10.1016/j.molliq.2023.121528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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Hu B, Xiao M, Liu C, Che G, Jia J, Yan L, Dong H. Fabricate dual interface build-in electric fields by introducing Au nanospecies into Z-scheme heterojunction to propel photocatalytic CO2 reduction. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Moin M, Anwar AW, Ali A, Nabi S, Bashir MZ, Ali S, Bilal S, Haq NU. A comprehensive correlated analysis of Ra-Doped (ZnO 2, ZnO) for optoelectronic applications: a first-principle study. J Mol Model 2023; 29:44. [PMID: 36653515 DOI: 10.1007/s00894-022-05425-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 12/16/2022] [Indexed: 01/20/2023]
Abstract
CONTEXT Zinc oxide (ZnO) exhibits bulk-like behavior and is modified by radium doping to attain favorable electronic properties. The elastic and mechanical response of ZnO2 is much more favorable than ZnO material. The change in thermal expansion, Debye temperature, free energy, entropy, and specific heat leads it to be a good candidate for thermodynamic applications at low and high temperatures. Optical properties like dielectric function, absorption, refraction, reflection, and refractive index obtained after suitable doping transform the material as optically active. ZnO2 has low reflectivity and zero absorption below the electronic band gap as compared to ZnO in a wider spectral range. Our analyses on doped ZnO2 and ZnO make us confident for a wide range of applications in optoelectronic and anti-bacterial treatment in biomedical devices. Especially due to high flexibility and high light transmission, ZnO2 is an excellent applicant for transparent electrodes. METHODS Density functional theory has been employed in consistency with generalized gradient approximation (GGA) with PBEsol to analyze the structural, electronic, elastic, mechanical, thermodynamic, and optical response of pure and Ra-doped (ZnO2 and ZnO) materials.
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Affiliation(s)
- Muhammad Moin
- Department of Physics, University of Engineering and Technology, Lahore, 54890, Pakistan
| | - Abdul Waheed Anwar
- Department of Physics, University of Engineering and Technology, Lahore, 54890, Pakistan.
| | - Anwar Ali
- Department of Physics, University of Engineering and Technology, Lahore, 54890, Pakistan
| | - Shafqat Nabi
- Department of Physics, University of Engineering and Technology, Lahore, 54890, Pakistan
| | - M Zeeshan Bashir
- Department of Physics, University of Engineering and Technology, Lahore, 54890, Pakistan
| | - Shahid Ali
- Department of Physics, University of Engineering and Technology, Lahore, 54890, Pakistan
| | - Shahid Bilal
- Department of Physics, University of Engineering and Technology, Lahore, 54890, Pakistan
| | - Najam Ul Haq
- Department of Physics, Comsats University Lahore, Lahore, 54000, Pakistan
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Mostafa MMM, Shawky A, Zaman SF, Narasimharao K, Abdel Salam M, Alshehri AA, Khdary NH, Al-faifi S, Chowdhury AD. Visible-Light-Driven CO2 Reduction into Methanol Utilizing Sol-Gel-Prepared CeO2-Coupled Bi2O3 Nanocomposite Heterojunctions. Catalysts 2022; 12:1479. [DOI: 10.3390/catal12111479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Carbon dioxide (CO2) photoreduction into renewable fuels over semiconductor photocatalysts has emerged as a green and sustainable alternative for energy production. Consequently, tremendous efforts are being performed to develop robust and sustainable photocatalysts. Therefore, visible-light active nanocomposite photocatalysts composed of 5.0–20.0 wt.% bismuth oxide (Bi2O3) and cerium oxide (CeO2) were synthesized by a sol-gel-based process. The prepared nanocomposites were evaluated for the promoted photocatalytic reduction of CO2 into methanol (CH3OH). Various characterizations of the obtained photocatalysts exposed an outstanding development of crystalline structure, morphology, and surface texture due to the presence of Bi2O3. Moreover, the absorbance of light in the visible regime was improved with enhanced charge separation, as revealed by the exploration of optical response, photoluminescence, and photocurrent measurements. The overall bandgap calculations revealed a reduction to 2.75 eV for 15% Bi2O3/CeO2 compared to 2.93 eV for pure CeO2. Moreover, the adjusted 2.8 g L−1 dose of 15% Bi2O3/CeO2 selectively produced 1300 μmol g−1 CH3OH after 9 h of visible light irradiation. This photocatalyst also exhibits bearable reusability five times. The improved progression of 15% Bi2O3/CeO2 is denoted by significant charge separation as well as enhanced mobility. This study suggests the application of metal oxide-based heterojunctions for renewable fuel production under visible light.
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