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Zhao D, Wen Y, Li Z, Cui Y, Zhao Y, Lu TF, He M, Song B, Zhang Z. Theoretical study of adsorption of gas (CO, CO 2, NH 3) by metal (Au, Ag, Cu)-doped single-layer WS 2. J Mol Model 2024; 30:322. [PMID: 39225909 DOI: 10.1007/s00894-024-06118-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2024] [Accepted: 08/22/2024] [Indexed: 09/04/2024]
Abstract
CONTEXT The adsorptions of gas (CO, CO2, NH3) by metal (Au, Ag, Cu)-doped single layer WS2 are studied by density functional theory. The doping of metal atoms makes WS2 behave as n-type semiconductors. The final adsorption sites for CO, CO2, and NH3 are close to the atomic sites of the doped metal. The adsorptions of CO and NH3 gases on Cu/WS2, Ag/WS2, and Au/WS2 are dominated by chemisorption. The doped metal atoms enhance the hybridization of the substrate with the gas molecular orbitals, which contributes to the charge transfer and enhances the adsorption of the gas with the material surface. The adsorptions of CO and NH3 on Cu/WS2 and Ag/WS2 allow favorable desorption in a short time after heating. The single-layer Cu/WS2 is proved to have the potential to be used as a reliable recyclable sensor for CO. This work provides a theoretical basis for developing high-performance WS2-based gas sensors. METHODS In this paper, the adsorption energy, electronic structure, charge transfer, and recovery time of CO, CO2, and NH3 in the doped system have been investigated based on the CASTEP code of density functional theory. The exchange correlation function used is the Perdew-Burke-Ernzerhof (PBE) generalized gradient approximation (GGA). The TS (Tkatchenko-Scheffler) dispersion correction method was used to involve the effects of van der Waals interaction on the adsorption energies for all adsorption system. The ultrasoft pseudopotentials are chosen and the plane-wave cut-off energies are set to 500 eV. The k-point mesh generated by the Monkhorst package scheme is used to perform the numerical integration of the Brillouin zone and 5 × 5 × 1 k-point grid is used. The tolerances of total energy convergence, maximum ionic force, ionic displacement, and stress component are 1.0 × 10-5 eV/atom, 0.03 eV/Å, 0.001 Å, and 0.05 GPa, respectively.
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Affiliation(s)
- Danqi Zhao
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, People's Republic of China
| | - Yang Wen
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, People's Republic of China
| | - Zhiqiang Li
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, People's Republic of China
| | - Yan Cui
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, People's Republic of China
| | - Yimin Zhao
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, People's Republic of China
| | - Teng-Fei Lu
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, People's Republic of China
| | - Ming He
- School of Physics and Materials Engineering, Dalian Minzu University, Dalian, 116600, People's Republic of China
| | - Bo Song
- Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin, 150080, People's Republic of China
| | - Zhihua Zhang
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, People's Republic of China.
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Mirzaei A, Alizadeh M, Ansari HR, Moayedi M, Kordrostami Z, Safaeian H, Lee MH, Kim TU, Kim JY, Kim HW, Kim SS. Resistive gas sensors for the detection of NH 3gas based on 2D WS 2, WSe 2, MoS 2, and MoSe 2: a review. NANOTECHNOLOGY 2024; 35:332002. [PMID: 38744265 DOI: 10.1088/1361-6528/ad4b22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 05/14/2024] [Indexed: 05/16/2024]
Abstract
Transition metal dichalcogenides (TMDs) with a two-dimensional (2D) structure and semiconducting features are highly favorable for the production of NH3gas sensors. Among the TMD family, WS2, WSe2, MoS2, and MoSe2exhibit high conductivity and a high surface area, along with high availability, reasons for which they are favored in gas-sensing studies. In this review, we have discussed the structure, synthesis, and NH3sensing characteristics of pristine, decorated, doped, and composite-based WS2, WSe2, MoS2, and MoSe2gas sensors. Both experimental and theoretical studies are considered. Furthermore, both room temperature and higher temperature gas sensors are discussed. We also emphasized the gas-sensing mechanism. Thus, this review provides a reference for researchers working in the field of 2D TMD gas sensors.
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Affiliation(s)
- Ali Mirzaei
- Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz 71557-13876, Iran
| | - Morteza Alizadeh
- Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz 71557-13876, Iran
| | - Hamid Reza Ansari
- Department of Electrical Engineering, Shiraz University of Technology, Shiraz 71557-13876, Iran
| | - Mehdi Moayedi
- Department of Electrical Engineering, Shiraz University of Technology, Shiraz 71557-13876, Iran
| | - Zoheir Kordrostami
- Department of Electrical Engineering, Shiraz University of Technology, Shiraz 71557-13876, Iran
| | - Haniyeh Safaeian
- Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz 71557-13876, Iran
| | - Myoung Hoon Lee
- Department of Materials Science and Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Tae-Un Kim
- Department of Materials Science and Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Jin-Young Kim
- Department of Materials Science and Engineering, Inha University, Incheon 22212, Republic of Korea
- The Research Institute of Industrial Science, Hanyang University, Seoul 04763, Republic of Korea
| | - Hyoun Woo Kim
- The Research Institute of Industrial Science, Hanyang University, Seoul 04763, Republic of Korea
- Division of Materials Science and Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Sang Sub Kim
- Department of Materials Science and Engineering, Inha University, Incheon 22212, Republic of Korea
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Su D, Liu G, Ma M, Wei R, Mu Y, Yang Z, Zhang G. First-principles study of the effect of doping on the optoelectronic properties of defective monolayers of MoSe 2. J Mol Model 2024; 30:29. [PMID: 38194004 DOI: 10.1007/s00894-023-05826-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/29/2023] [Indexed: 01/10/2024]
Abstract
CONTEXT In this paper, the structural stability, electronic structure, and optical properties of monolayer MoSe2 doped with C, O, Si, S, and Te atoms, respectively, under defective conditions are investigated based on first principles. It is found that the system is more structurally stable when defecting a single Se atom as compared to defecting a single Mo or two Se atoms. The electronic structure analysis of the system reveals that intrinsic MoSe2 is a direct bandgap semiconductor. The bandgap value of the system decreases with a single Se atom defect and introduces two new impurity energy levels in the conduction band. The defective systems doped with C and Si atoms all exhibit P-type doping. The total density of states of intrinsic MoSe2 is mainly contributed by the Mo-d and Se-p orbitals, and new density of state peaks appears near the conduction band after the defects of Se atoms. The total density of states of the defective system doped by each atom is mainly contributed by Mo-d, Se-p, and the result of the p orbital contribution of each dopant atom. By analyzing the dielectric function of each system, it is found that the intrinsic MoSe2 has the lowest static permittivity and the C-doped defect system has the highest static permittivity, which reaches 21.42. The C- and Si-doped defect systems are the first to start absorbing the light, and the intrinsic MoSe2 absorbs the light later, with its absorption edge starting at 1.25 eV. In the visible range, the reflection peaks of the systems move toward the high-energy region and the blue-shift phenomenon occurs. It is hoped that applying modification means to modulate the physical properties of the two-dimensional materials will provide some theoretical basis for broadening the application of monolayer MoSe2 in the field of optoelectronic devices. METHODS This study utilizes the first principle computational software package MS8.0 (Materials studio8.0) under density functional theory (DFT). The exchange-correlation potential (GGA-PBE) is described by the Perdew-Burke-Ernzerhof correlation function in CASTEP, and the potential function adopts the ultrasoft pseudopotential in the inverse space formulation. The plane wave truncation energy Ecut is set to 400 eV, the K-point is taken as 5 × 5 × 1, and the force convergence criterion is 0.05 eV/Å. The convergence accuracy of the total energy of the system is less than 1.0 × 10-5 eV/atom, the tolerance shift is less than 0.002 Å, and the stress deviation is less than 0.1 GPa. The vacuum layer is taken as 15 Å, which is intended to minimize the interlayer force. The vacuum layer was set to 15 Å to avoid the effect of layer-to-layer interaction forces in the crystal cell.
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Affiliation(s)
- Dan Su
- College of Architecture and Civil Engineering, Shenyang University of Technology, Shenliao Westroad Economic and Technological Development District, No.111, Shenyang, Liaoning, People's Republic of China
| | - Guili Liu
- College of Architecture and Civil Engineering, Shenyang University of Technology, Shenliao Westroad Economic and Technological Development District, No.111, Shenyang, Liaoning, People's Republic of China.
| | - Mengting Ma
- College of Architecture and Civil Engineering, Shenyang University of Technology, Shenliao Westroad Economic and Technological Development District, No.111, Shenyang, Liaoning, People's Republic of China
| | - Ran Wei
- College of Architecture and Civil Engineering, Shenyang University of Technology, Shenliao Westroad Economic and Technological Development District, No.111, Shenyang, Liaoning, People's Republic of China
| | - Yansong Mu
- College of Architecture and Civil Engineering, Shenyang University of Technology, Shenliao Westroad Economic and Technological Development District, No.111, Shenyang, Liaoning, People's Republic of China
| | - Zhonghua Yang
- College of Architecture and Civil Engineering, Shenyang University of Technology, Shenliao Westroad Economic and Technological Development District, No.111, Shenyang, Liaoning, People's Republic of China
| | - Guoying Zhang
- School of Physics, Shenyang Normal University, Shenyang, People's Republic of China
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Wang B, Ding Y, Yin S, Cai M. A DFT Study on the Mechanism of Active Species in Selective Photocatalytic Oxidation of Toluene into Benzaldehyde on (WO
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Clusters. ChemistrySelect 2022. [DOI: 10.1002/slct.202203173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Bin Wang
- Hunan Provincial Key Laboratory of High-Energy Scale Physics and Applications School of Physics and Electronics Science Hunan University Changsha 410082 P. R. China
| | - Yu‐Feng Ding
- Hunan Provincial Key Laboratory of High-Energy Scale Physics and Applications School of Physics and Electronics Science Hunan University Changsha 410082 P. R. China
| | - Shuang‐Feng Yin
- Advanced Catalytic Engineering Research Center of the Ministry of Education State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Provincial Hunan Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing Carbon-dioxide Emissions Hunan University Changsha 410082 Hunan Province P. R. China
| | - Meng‐Qiu Cai
- Hunan Provincial Key Laboratory of High-Energy Scale Physics and Applications School of Physics and Electronics Science Hunan University Changsha 410082 P. R. China
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