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V N D, Sen S, Chattopadhyaya M. Comparative study of the photocatalytic activity of g-C 3N 4/MN 4 (M = Mn, Fe, Co) for water splitting reaction: A theoretical study. J Comput Chem 2024. [PMID: 38970347 DOI: 10.1002/jcc.27464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 06/12/2024] [Accepted: 06/27/2024] [Indexed: 07/08/2024]
Abstract
In this study, nanocomposites of g-C3N4/MN4 (where M is Mn, Fe and Co) have been designed using advanced density functional theory (DFT) calculations. A comprehensive analysis was conducted on the geometry, electronic, optical properties, work function, charge transfer interaction and adhesion energy of the g-C3N4/MN4 heterostructures and concluded that g-C3N4/FeN4 and g-C3N4/CoN4 heterojunctions exhibit higher photocatalytic performance than individual units. The better photocatalytic activity can be attributed mainly by two facts; (i) the visible light absorption of both g-C3N4/FeN4 and g-C3N4/CoN4 interfaces are higher compared to its isolated analogs and (ii) a significant enhancement of band gap energy in g-C3N4/FeN4 and g-C3N4/CoN4 heterostructures limited the electron-hole recombination significantly. The potential of the g-C3N4/MN4 heterojunctions as a photocatalyst for the water splitting reaction was assessed by examining its band alignment for water splitting reaction. Importantly, while the electronic and magnetic properties of MN4 systems were studied, this is the first example of inclusion of MN4 on graphene-based material (g-C3N4) for studying the photocatalytic activity. The state of the art DFT calculations emphasis that g-C3N4/FeN4 and g-C3N4/CoN4 heterojunctions are half metallic photocatalysts, which is limited till date.
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Affiliation(s)
- Dhilshada V N
- Department of Chemistry, National Institute of Technology, Calicut, India
| | - Sabyasachi Sen
- Department of Physics, Shyampur Siddheswari Mahavidyalaya, Nadia, India
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Yan S, Chen W, Xiong W, Yang L, Luo R, Wang F. Dicarbon nitride and Janus transition metal chalcogenides van der Waals heterojunctions for photocatalytic water splitting. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 51:014003. [PMID: 36317286 DOI: 10.1088/1361-648x/ac9e85] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
Two-dimensional graphene-like dicarbon nitride (C2N) is a newly synthesized metal-free material, which has attracted significant research interest owing to the direct band gap, high carrier mobility, thermal stability, and great tunable properties. However, their application in photocatalytic water splitting has not been well explored. In this work, the properties of photocatalytic water decomposition in heterojunctions composed of C2N and transition metal dichalcogenides (TMDs) with Janus structure MoXY (X, Y = S, Se, Te) are systematically studied by the first-principles calculations based on density functional theory. The results show that except for MoTeS/C2N, the other five heterojunctions have type-Ⅱ band alignment, which causes electrons and holes to gather in the C2N and MoXY layer separately. Because the coupled built-in electric field at the intra-layer and inter-layer of asymmetric TMDs with Janus structure forms van der Waals heterojunction, the external electric field is an effective means of modulating the electronic properties of the heterojunction. Under the imposition of an external electric field, the MoSeS/C2N, MoTeSe/C2N, and MoTeS/C2N heterojunctions meet the band edge requirements for the photocatalytic decomposition of water. Detailed analysis demonstrates that the MoSeS/C2N heterojunction could effectively improve the optical absorption properties of monolayer C2N, making it a potential photocatalytic water decomposition material.
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Affiliation(s)
- Su Yan
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Weiguang Chen
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou 450044, People's Republic of China
| | - Wen Xiong
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, People's Republic of China
| | - Liang Yang
- School of Materials Science and Engineering, Hainan University, Haikou 570228, People's Republic of China
| | - Ronghui Luo
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Fei Wang
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, People's Republic of China
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Zhao Z, Yang C, Cao Z, Bian Y, Li B, Wei Y. Two-dimensional ZnO/BlueP van der Waals heterostructure used for visible-light driven water splitting: A first-principles study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 278:121359. [PMID: 35569199 DOI: 10.1016/j.saa.2022.121359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 04/14/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
Solar driven water splitting for hydrogen generation has been considered as an important method for collecting clean energy. Herein, based on first-principles calculations, we propose that ZnO/BlueP van der Waals heterostructure can realize overall water splitting reaction for hydrogen generation. Strikingly, the band-gap of 1.83 eV is appropriate, and band alignments straddle the water redox potentials, ensuring the occurrence of hydrogenevolutionreaction and oxygen evolution reaction. Charge density distribution and carrier mobility exhibit significant charge separation and transfer. Visible-light response is improved compared with those of the isolated monolayers. Moreover, hydrogenevolutionreaction is actually realized on the ZnO layer, while oxygen evolution reaction is implemented on the BlueP layer. Through the investigation of the adsorption and dissociation reactions of H2O, we observe that two neighboring H*s prefer to combine to form H2 by overcoming a lowered energy barrier of 0.75 eV. Strain effect indicates that the lateral compressive strain of -4% to 0% and the vertical tensile strain of 0% to +6% can effectively tune band-gap and band alignments. The results indicate that ZnO/BlueP vdW heterostructure is probable highly efficient photoelectric material used for visible-light driven water splitting for hydrogen generation.
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Affiliation(s)
- Zecheng Zhao
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, People's Republic of China.
| | - Chuanlu Yang
- School of Physics and Optoelectronics Engineering, Ludong University, Yantai 264025, People's Republic of China.
| | - Zanxia Cao
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, People's Republic of China
| | - Yunqiang Bian
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, People's Republic of China
| | - Bingwen Li
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, People's Republic of China
| | - Yunwei Wei
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, People's Republic of China
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Zhu H, Shen Y, Fang Q, Yang X, Chen L, Xu S. GaN/MgI 2 van der Waals heterostructure: a two-factor tunable photocatalyst for hydrogen evolution. Phys Chem Chem Phys 2022; 24:15075-15082. [PMID: 35696996 DOI: 10.1039/d2cp01456d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the increasing environmental pollution and energy crisis, it is significant to develop environmentally friendly and adjustable photocatalysts for water splitting. Here we explored the optoelectronic properties of several H-GaN/MgI2 vdW heterostructures by regulating different polarization surfaces and numbers of GaN layers. Our results demonstrate that all structures, except 2L-Ga-GaN/MgI2, exhibit excellent physical stability. Moreover, the band structures and band edge positions demonstrate that only the heterostructure of 3L-Ga-GaN/MgI2 with both suitable band alignment (type-II) and an acceptable band gap (∼1.92 eV) is most satisfactory for water splitting. Additionally, the absorption coefficient of the 3L-Ga-GaN/MgI2 heterostructure can reach over ∼105 cm-1, which has further confirmed its excellent advantage in photocatalysis. Finally, in the case of 6% external strain for the 3L-Ga-GaN/MgI2 heterostructure, a rollover in band alignment (from type-II to type-I) is exhibited. These promising features of the GaN/MgI2 vdW heterostructure give a new paradigm for developing novel efficient and adjustable photocatalytic water-splitting materials.
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Affiliation(s)
- Hua Zhu
- Institute of Optoelectronics Technology, China Jiliang University, Hangzhou, 310018, China.
| | - Yang Shen
- Institute of Optoelectronics Technology, China Jiliang University, Hangzhou, 310018, China.
| | - Qianglong Fang
- Institute of Optoelectronics Technology, China Jiliang University, Hangzhou, 310018, China.
| | - Xiaodong Yang
- Key Laboratory of Ecophysics and Department of Physics, Shihezi University, Xinjiang 832003, China.
| | - Liang Chen
- Institute of Optoelectronics Technology, China Jiliang University, Hangzhou, 310018, China.
| | - Shiqing Xu
- Institute of Optoelectronics Technology, China Jiliang University, Hangzhou, 310018, China.
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Abstract
Molecular doping is an excellent instrument to modify the electronic properties of two−dimensional materials. In our work, the structure and electronic properties of the adsorption systems of g−ZnO adsorbed by organic molecules (including Tetracyanoethylene (TCNE), Tetracyanoquinodimethane (TCNQ), and Tetrahydrofulvalene (TTF)) were investigated computationally using Density Functional Theory (DFT). The results showed that the TCNE and TCNQ, as electron receptors, doped the LUMO energy level above the valence band maximum (VBM) of the g−ZnO band structure, demonstrating effective p−type doping. The n−type doping of g−ZnO was obtained that the TTF molecules, as electron donors, doped the HOMO energy level below the conduction band minimum (CBM) of the band structure for g−ZnO. In addition, the TCNE, TCNQ, and TTF breathed additional holes or electrons into the monolayer g−ZnO, creating surface dipole moments between the g−ZnO and organic molecules, which caused work function to be adjustable, ranging from 3.871 eV to 5.260 eV. Our results prove that organic molecular doping was instrumental in improving the performance of g−ZnO−based nano−electronic devices, providing theoretical support for the fabrication of p−doping or n−doping nano−semiconductor components. The tunable range of field emission capability of g−ZnO−based electronic devices was also extended.
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Besharat F, Ahmadpoor F, Nezafat Z, Nasrollahzadeh M, Manwar NR, Fornasiero P, Gawande MB. Advances in Carbon Nitride-Based Materials and Their Electrocatalytic Applications. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05728] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Farzaneh Besharat
- Department of Chemistry, Faculty of Science, University of Qom, Qom 37185-359, Iran
| | - Fatemeh Ahmadpoor
- Department of Chemistry, Faculty of Science, University of Qom, Qom 37185-359, Iran
| | - Zahra Nezafat
- Department of Chemistry, Faculty of Science, University of Qom, Qom 37185-359, Iran
| | | | - Nilesh R. Manwar
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna, Maharashtra 431203, India
| | - Paolo Fornasiero
- Department of Chemical and Pharmaceutical Sciences, Center for Energy, Environment and Transport Giacomo Ciamiciam, INSTM Trieste Research Unit, ICCOM-CNR Trieste Research Unit, University of Trieste, Via Licio Giorgieri 1, I-34127 Trieste, Italy
| | - Manoj B. Gawande
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna, Maharashtra 431203, India
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Cong S, Yu J, Liu B, Teng W, Tang Y. Preparing a dual-function BiVO 4/NiFe-LDH composite photoanode for enhanced photoelectrocatalytic wastewater treatment and simultaneous hydrogen evolution. NEW J CHEM 2022. [DOI: 10.1039/d2nj02210a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The proposed PEC degradation over the BiVO4/NiFe-LDH photoelectrode under visible light irradiation and simultaneous hydrogen evolution at the cathode.
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Affiliation(s)
- Sumin Cong
- Department of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, P. R. China
| | - Jiuheng Yu
- Department of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, P. R. China
| | - Baojun Liu
- College of Resource and Environmental Engineering, Guizhou University, Guizhou Karst Environmental Ecosystems Observation and Research Station, Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guiyang 550025, China
| | - Wei Teng
- Department of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, P. R. China
| | - Yubin Tang
- Department of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, P. R. China
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Deng C, Xu H, Qin H, Xia D, Li D, Yu Q, Chen D, Zheng Y, Wang Y. Enhancing the separation efficiency of photo-induced carriers in a Bi 2S 3/BiOCl heterostructure by cooperative influence of oxygen vacancies and the interfacial electric field. NEW J CHEM 2022. [DOI: 10.1039/d2nj00976e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The outstanding photocatalytic activity of Bi2S3/BiOCl heterostructures derived from enhanced light-utilization efficiency is demonstrated.
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Affiliation(s)
- Chengming Deng
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430200, P. R. China
| | - Haiming Xu
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430200, P. R. China
| | - Hailan Qin
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430200, P. R. China
| | - Dongsheng Xia
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430200, P. R. China
- Engineering Research Center Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan, 430200, P. R. China
| | - Dongya Li
- Engineering Research Center Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan, 430200, P. R. China
| | - Qilin Yu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin 300071, P. R. China
| | - Dahong Chen
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, P. R. China
| | - Yi Zheng
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, P. R. China
| | - Yujia Wang
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430200, P. R. China
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Abdollahi N, Ostovan A, Rahimi K, Zahedi M, Moshfegh AZ. Magnetically Recyclable Fe 3O 4@TMU-32 Metal-Organic Framework Photocatalyst for Tetracycline Degradation Under Visible Light. Inorg Chem 2021; 60:17997-18005. [PMID: 34779628 DOI: 10.1021/acs.inorgchem.1c02588] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Metal-organic frameworks (MOFs) are a new class of porous crystalline materials being used as photocatalysts for efficient pollutant removal and environmental remediation. In this study, the TMU-32 MOF was synthesized as an effective photocatalyst for the photodegradation of tetracycline (TC) with 96% efficiency in 60 min under visible light. The high photocatalytic activity of the TMU-32 MOF is mainly due to its large specific surface area, which is beneficial for promoting both the adsorption of TC and the separation of the photoinduced charges. Moreover, its desired crystallinity makes it a semiconductor with an appropriate band gap energy. Next, a composite of the TMU-32 MOF with Fe3O4 nanoparticles (as Fe3O4@TMU-32) was prepared as a magnetically recyclable photocatalyst. The results showed that the photocatalytic activity of the Fe3O4@TMU-32 nanocomposite is slightly lower (68% degradation of TC within 60 min) than that of TMU-32 toward TC degradation since Fe3O4 nanoparticles are not acting as a photocatalyst and are used only to make the host photocatalyst (here, TMU-32) magnetically separable. The effects of the photocatalyst concentration and recyclability on the photodegradation of TC were studied under similar conditions. We found that the Fe3O4@TMU-32 composite is easily recycled without a significant loss of photocatalytic activity after being used several times, indicating the stability of the photocatalyst. Finally, a density functional theory study was also conducted to investigate the structural and electronic properties such as the band gap energy and density of states of the TMU-32 MOF and the Fe3O4@TMU-32 composite. Our computational results are in good agreement with the experimental ones. A photocatalytic degradation mechanism was finally proposed under visible-light photoirradiation.
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Affiliation(s)
- Nasrin Abdollahi
- Department of Physics, Sharif University of Technology, P.O. Box 11555-9161, Tehran, Iran
| | - Azar Ostovan
- Department of Physics, Sharif University of Technology, P.O. Box 11555-9161, Tehran, Iran
| | - Kourosh Rahimi
- Department of Physics, Sharif University of Technology, P.O. Box 11555-9161, Tehran, Iran
| | - Mansour Zahedi
- Department of Chemical and Petroleum Sciences, Shahid Beheshti University, G.C., P.O. Box 19839-63113 Evin, Tehran, Iran
| | - Alireza Z Moshfegh
- Department of Physics, Sharif University of Technology, P.O. Box 11555-9161, Tehran, Iran.,Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 14588-89694, Tehran, Iran
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