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Vinturaj VP, Yadav AK, Singh R, Garg V, Bhardwaj R, Ajith KM, Pandey SK. A DFT study of the adsorption behavior and sensing properties of CO gas on monolayer MoSe 2 in CO 2-rich environment. J Mol Model 2024; 30:250. [PMID: 38967840 DOI: 10.1007/s00894-024-06014-y] [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: 02/27/2024] [Accepted: 06/09/2024] [Indexed: 07/06/2024]
Abstract
CONTEXT Carbon monoxide, also known as the "silent killer," is a colorless, odorless, tasteless, and non-irritable gas that, when inhaled, enters the bloodstream and lungs, binds with the hemoglobin, and blocks oxygen from reaching tissues and cells. In this work, the monolayer MoSe2-based CO gas sensors were designed using density functional theory calculation with several dopants including Al, Au, Pd, Ni, Cu, and P. Here, Cu and P were found to be the best dopants, with adsorption energies of -0.67 eV (Cu) and -0.54 eV (P) and recovery times of 1.66 s and 13.8 ms respectively. Cu conductivity for CO adsorption was found to be 2.74 times that of CO2 adsorption in the 1.0-2.26 eV range. P displayed the highest selectivity, followed by Pd and Ni. The dopants, Pd and Ni, were found suitable for building CO gas scavengers due to their high recovery times of 9.76 × 1020 s and 2.47 × 1011 s. Similarly, the adsorption of CO2 on doped monolayer MoSe2 was also investigated. In this study, it is found that monolayer MoSe2 could be employed to create high-performance CO sensors in a CO2-rich environment. METHOD The electrical characteristics of all doped MoSe2 monolayers are obtained using a DFT calculation with the PBE-GGA method from the Quantum ESPRESSO package. The self-consistent field (SCF) computations were performed using a 7 × 7 × 1 k-point grid and a norm-conserving pseudo potential (NCPP) file. To determine electrical conductivity, the semi-classical version of Boltzmann transport theory, implemented in the Boltz Trap code, was used.
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Affiliation(s)
- V P Vinturaj
- Department of Electronics and Communications Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, Karnataka, 575025, India
| | - Ashish Kumar Yadav
- Department of Electronics and Communications Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, Karnataka, 575025, India
| | - Rohit Singh
- Department of Electrical Engineering, Shiv Nadar Institution of Eminence, Delhi, NCR-201314, India
| | - Vivek Garg
- Department of Electronics Engineering, Sardar Vallabhbhai National Institute of Technology, Surat, 395007, India
| | - Ritesh Bhardwaj
- Department of Electronics and Communications Engineering, The LNM Institute of Information Technology, Jaipur, Rajasthan, 302031, India
| | - K M Ajith
- Department of Physics, National Institute of Technology Karnataka, Surathkal, Mangalore, Karnataka, 575025, India
| | - Sushil Kumar Pandey
- Department of Electronics and Communications Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, Karnataka, 575025, India.
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Fan J, Wang X, Ma J, Liu X, Lai X, Xia H, Liu Y. Efficient photoreduction of carbon dioxide to ethanol using diatomic nitrogen-doped black phosphorus. Phys Chem Chem Phys 2024; 26:7731-7737. [PMID: 38372286 DOI: 10.1039/d3cp05275c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Successful conversion of CO2 into C2 products requires the development of new catalysts that overcome the difficulties in efficient light harvesting and CO-CO coupling. Herein, density functional theory (DFT) is used to assess the photoreduction properties of nitrogen-doped black phosphorus. The geometric structure, redox potential, first step of hydrogenation activation, CO desorption, and CO-CO coupling are systematically calculated, based on which the diatomic nitrogen-doped black phosphorus (N2@BPV) stands out. The calculated results of the CO2RR pathway demonstrate that N2@BPV has excellent selectivity and high activity for CH3CH2OH production. The results of the time-dependent ab initio nonadiabatic molecular dynamics simulation show that the diatomic N active sites of N2@BPV facilitate charge separation and inhibit electron-hole recombination. In addition, the activation mechanism of CO2 is studied. The main reason for CO2 activation is attributed to the imbalance in electron transfer that destroys the symmetry of CO2. We expect that our study will offer some theoretical guidance in CO2 conversion.
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Affiliation(s)
- Jianhua Fan
- State Key Laboratory for High-efficiency Utilization of Coal and Green Chemicals Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
| | - Xin Wang
- State Key Laboratory for High-efficiency Utilization of Coal and Green Chemicals Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
| | - Jing Ma
- State Key Laboratory for High-efficiency Utilization of Coal and Green Chemicals Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
| | - Xingman Liu
- State Key Laboratory for High-efficiency Utilization of Coal and Green Chemicals Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
| | - Xiaoyong Lai
- State Key Laboratory for High-efficiency Utilization of Coal and Green Chemicals Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
| | - Hongqiang Xia
- State Key Laboratory for High-efficiency Utilization of Coal and Green Chemicals Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
| | - Yingtao Liu
- State Key Laboratory for High-efficiency Utilization of Coal and Green Chemicals Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
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Kumar A, Senapati P, Parida P. Theoretical insights into the structural, electronic and thermoelectric properties of the inorganic biphenylene monolayer. Phys Chem Chem Phys 2024; 26:2044-2057. [PMID: 38126442 DOI: 10.1039/d3cp03088a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Being motivated by a recently synthesized biphenylene carbon monolayer (BPN), using first principles methods, we have studied its inorganic analogue (B-N analogue) named I-BPN. A comparative study of structural, electronic and mechanical properties between BPN and I-BPN was carried out. Like BPN, the stability of I-BPN was verified in terms of formation energy, phonon dispersion calculations, and mechanical parameters (Young's modulus and Poisson's ratio). The chemical inertness of I-BPN was also investigated by adsorbing an oxygen molecule in an oxygen-rich environment. It has been found that the B-B bond favours the oxygen molecule to be adsorbed through chemisorption. The lattice transport properties reveal that the phonon thermal conductivity of I-BPN is ten times lower than that of BPN. The electronic band structure reveals that I-BPN is a semiconductor with an indirect bandgap of 1.88 eV, while BPN shows metallic behaviour. In addition, we investigated various thermoelectric properties of I-BPN for possible thermoelectric applications. The thermoelectric parameters, such as the Seebeck coefficient, show the highest peak value of 0.00289 V K-1 at 300 K. Electronic transport properties reveal that I-BPN is highly anisotropic along the x and y-axes. Furthermore, the thermoelectric power factor as a function of chemical potential shows a peak value of 0.057 W m-1 K-2 along the x-axis in the p-type doping region. The electronic figure of merit shows a peak value of approximately unity. However, considering lattice thermal conductivity, the peak value of the total figure of merit (ZT) reduces to 0.68(0.46) for p-type and 0.56(0.48) for n-type doping regions along the x(y) direction at 900 K. It is worth noting that our calculated ZT value of I-BPN is higher than that of many other reported B-N composite materials.
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Affiliation(s)
- Ajay Kumar
- Department of Physics, Indian Institute of Technology Patna, Bihta, Bihar, India.
| | - Parbati Senapati
- Department of Physics, Indian Institute of Technology Patna, Bihta, Bihar, India.
| | - Prakash Parida
- Department of Physics, Indian Institute of Technology Patna, Bihta, Bihar, India.
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Yin Z, Panaccione W, Hu A, Douglas ORT, Tanjil MRE, Jeong Y, Zhao H, Wang MC. Directionally-Resolved Phononic Properties of Monolayer 2D Molybdenum Ditelluride (MoTe 2) under Uniaxial Elastic Strain. NANO LETTERS 2023; 23:11763-11770. [PMID: 38100381 DOI: 10.1021/acs.nanolett.3c03706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
Understanding the phonon characteristics of two-dimensional (2D) molybdenum ditelluride (MoTe2) under strain is critical to manipulating its multiphysical properties. Although there have been numerous computational efforts to elucidate the strain-coupled phonon properties of monolayer MoTe2, empirical validation is still lacking. In this work, monolayer 1H-MoTe2 under uniaxial strain is studied via in situ micro-Raman spectroscopy. Directionally dependent monotonic softening of the doubly degenerate in-plane E2g1 phonon mode is observed with increasing uniaxial strain, where the E2g1 peak red-shifts -1.66 ± 0.04 cm-1/% along the armchair direction and -0.80 ± 0.07 cm-1/% along the zigzag direction. The corresponding Grüneisen parameters are calculated to be 1.09 and 0.52 along the armchair and zigzag directions, respectively. This work provides the first empirical quantification and validation of the orientation-dependent strain-coupled phonon response in monolayer 1H-MoTe2 and serves as a benchmark for other prototypical 2D transition-metal tellurides.
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Affiliation(s)
- Zhewen Yin
- Department of Mechanical Engineering, University of South Florida, Tampa, Florida 33620, United States
| | - Wyatt Panaccione
- Department of Mechanical Engineering, University of South Florida, Tampa, Florida 33620, United States
| | - Anjun Hu
- Department of Medical Engineering, University of South Florida, Tampa, Florida 33620, United States
| | - Ossie R T Douglas
- Department of Mechanical Engineering, University of South Florida, Tampa, Florida 33620, United States
| | - Md Rubayat-E Tanjil
- Department of Mechanical Engineering, University of South Florida, Tampa, Florida 33620, United States
| | - Yunjo Jeong
- Department of Mechanical Engineering, University of South Florida, Tampa, Florida 33620, United States
| | - Huijuan Zhao
- Department of Mechanical Engineering, Clemson University, Clemson, South Carolina 29634-0921, United States
| | - Michael Cai Wang
- Department of Mechanical Engineering, University of South Florida, Tampa, Florida 33620, United States
- Department of Medical Engineering, University of South Florida, Tampa, Florida 33620, United States
- Department of Chemical, Biological, and Materials Engineering, University of South Florida, Tampa, Florida 33620, United States
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Wang Y, Guo S, Xu X, Pan J, Hu J, Zhang S. Adsorption and sensing performance of air pollutants on a β-TeO 2 monolayer: a first-principles study. Phys Chem Chem Phys 2023; 26:612-620. [PMID: 38086641 DOI: 10.1039/d3cp04400a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Two-dimensional (2D) β-TeO2 is a novel semiconductor with potential applications in electronic circuits due to its air-stability and ultra-high carrier mobility. In this study, we explore the possibility of using a 2D β-TeO2 monolayer for the detection of gaseous pollutants including SO2, NO2, H2S, CO2, CO, and NH3 gas molecules based on first-principles calculations. The adsorption properties including the adsorption energy, adsorption distance and charge transfer indicate that the interaction between 2D β-TeO2 and the six gases is via a physisorption mechanism. Among the six gas adsorption systems, the SO2 adsorption system has the most negative adsorption energy and the largest charge transfer. In addition, the adsorption of SO2 obviously changes the electrical conductivity of the β-TeO2 monolayer because the band gap decreases from 2.727 eV to 1.897 eV after adsorbing SO2. Our results suggest that the 2D β-TeO2 should be an eminently promising SO2 sensing material.
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Affiliation(s)
- Ying Wang
- College of Physics Science and Technology, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
| | - Shiying Guo
- College of Physics Science and Technology, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
| | - Xiaoyong Xu
- College of Physics Science and Technology, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
| | - Jing Pan
- College of Physics Science and Technology, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
| | - Jingguo Hu
- College of Physics Science and Technology, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
| | - Shengli Zhang
- MIIT Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China.
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Li Z, Dong X, Zeng W. Adsorption of CH 4, CO, and H 2S on a MoTe 2 Monolayer Doped with Metal Atoms (Au and Ru): An Ab Initio Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:13228-13241. [PMID: 37676751 DOI: 10.1021/acs.langmuir.3c01664] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Detecting toxic gases, such as CH4, CO, and H2S, in everyday life holds great significance. This research article focuses on investigating the adsorption characteristics of CH4, CO, and H2S on MoTe2 and MoTe2 doped with Au and Ru using the density functional theory. The study examines various aspects, including adsorption energy, charge transfer, density of states, and charge density difference of the adsorption configuration. The findings demonstrate that the adsorption properties of Ru-doped MoTe2 exhibit a significant enhancement for all three gases, with CO displaying the highest adsorption performance. Through comparative analysis, it is evident that the adsorption affinity between MoTe2-Ru and the three gases is robust, thus indicating improved gas detection capabilities.
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Affiliation(s)
- Ziteng Li
- College of Materials Science and Engineering, Chongqing University, Chongqing 400030, People's Republic of China
| | - Xiaoyang Dong
- College of Materials Science and Engineering, Chongqing University, Chongqing 400030, People's Republic of China
| | - Wen Zeng
- College of Materials Science and Engineering, Chongqing University, Chongqing 400030, People's Republic of China
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Alagh A, Annanouch FE, Sierra-Castillo A, Haye E, Colomer JF, Llobet E. Three-Dimensional Assemblies of Edge-Enriched WSe 2 Nanoflowers for Selectively Detecting Ammonia or Nitrogen Dioxide. ACS APPLIED MATERIALS & INTERFACES 2022; 14:54946-54960. [PMID: 36469520 PMCID: PMC9756288 DOI: 10.1021/acsami.2c16299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Herein, we present, for the first time, a chemoresistive-type gas sensor composed of two-dimensional WSe2, fabricated by a simple selenization of tungsten trioxide (WO3) nanowires at atmospheric pressure. The morphological, structural, and chemical composition investigation shows the growth of vertically oriented three-dimensional (3D) assemblies of edge-enriched WSe2 nanoplatelets arrayed in a nanoflower shape. The gas sensing properties of flowered nanoplatelets (2H-WSe2) are investigated thoroughly toward specific gases (NH3 and NO2) at different operating temperatures. The integration of 3D WSe2 with unique structural arrangements resulted in exceptional gas sensing characteristics with dual selectivity toward NH3 and NO2 gases. Selectivity can be tuned by selecting its operating temperature (150 °C for NH3 and 100 °C for NO2). For instance, the sensor has shown stable and reproducible responses (24.5%) toward 40 ppm NH3 vapor detection with an experimental LoD < 2 ppm at moderate temperatures. The gas detecting capabilities for CO, H2, C6H6, and NO2 were also investigated to better comprehend the selectivity of the nanoflower sensor. Sensors showed repeatable responses with high sensitivity to NO2 molecules at a substantially lower operating temperature (100 °C) (even at room temperature) and LoD < 0.1 ppm. However, the gas sensing properties reveal high selectivity toward NH3 gas at moderate operating temperatures. Moreover, the sensor demonstrated high resilience against ambient humidity (Rh = 50%), demonstrating its remarkable stability toward NH3 gas detection. Considering the detection of NO2 in a humid ambient atmosphere, there was a modest increase in the sensor response (5.5%). Furthermore, four-month long-term stability assessments were also taken toward NH3 gas detection, and sensors showed excellent response stability. Therefore, this study highlights the practical application of the 2H variant of WSe2 nanoflower gas sensors for NH3 vapor detection.
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Affiliation(s)
- Aanchal Alagh
- Department
d’Enginyeria Electronica, Universitat
Rovira I Virgili, Avenida Paisos Catalans 26, 43007Tarragona, Spain
| | - Fatima Ezahra Annanouch
- Department
d’Enginyeria Electronica, Universitat
Rovira I Virgili, Avenida Paisos Catalans 26, 43007Tarragona, Spain
| | - Ayrton Sierra-Castillo
- Laboratoire
de Physique du Solide (LPS), Namur Institute
of Structured Matter (NISM), University of Namur, Rue de Bruxelles, 61, 500Namur, Belgium
| | - Emile Haye
- Laboratoire
d’Analyse par Réactions Nucléaires (LARN), Namur Institute of Structured Matter (NISM), Université
de Namur, Rue de Bruxelles
61, 5000Namur, Belgium
| | - Jean-François Colomer
- Laboratoire
de Physique du Solide (LPS), Namur Institute
of Structured Matter (NISM), University of Namur, Rue de Bruxelles, 61, 500Namur, Belgium
| | - Eduard Llobet
- Department
d’Enginyeria Electronica, Universitat
Rovira I Virgili, Avenida Paisos Catalans 26, 43007Tarragona, Spain
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Wang J, Zeng W, Zhou Q. Research status of gas sensing performance of MoTe2-based gas sensors: A mini review. Front Chem 2022; 10:950974. [PMID: 35936095 PMCID: PMC9354782 DOI: 10.3389/fchem.2022.950974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/05/2022] [Indexed: 11/13/2022] Open
Abstract
Transition metal dichalcogenides (TMDs) have been widely explored for their excellent gas sensing properties, especially high sensitivity and stability at room temperature. MoTe2 exhibits good sensitivity and selectivity to some nitrogen-containing gases (i.e., NO2, NH3) and has received extensive attention in gas sensing. In addition, increasingly complex production environments place demands on high-quality gas sensors. Therefore, worldwide efforts are devoted to designing and manufacturing MoTe2-based gas sensors with faster response and recovery speed. This paper summarizes the research progress of MoTe2-based gas sensing, focuses on the practical measures to improve the response and recovery speed of MoTe2-based sensors, and discusses the mechanism. This provides guidance for exploring higher performance MoTe2 sensors.
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Affiliation(s)
- Jingyu Wang
- College of Materials Science and Engineering, Chongqing University, Chongqing, China
| | - Wen Zeng
- College of Materials Science and Engineering, Chongqing University, Chongqing, China
- *Correspondence: Wen Zeng, ; Qu Zhou,
| | - Qu Zhou
- College of Engineering and Technology, Southwest University, Chongqing, China
- *Correspondence: Wen Zeng, ; Qu Zhou,
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Tang BW, Liu Y, Deng DW, Xu Y, Wen B, Tang ZK, Wei XL, Ge QX, Yin WJ. P-block atom modified Sn(200) surface as a promising electrocatalyst for two-electron CO 2 reduction: a first-principles study. Phys Chem Chem Phys 2022; 24:26556-26563. [DOI: 10.1039/d2cp03740h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The P-block atom can effectively regulate the activity of two-electron CO2 reduction on Sn(200) surface.
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Affiliation(s)
- Bo-Wen Tang
- School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China
- Key Laboratory of Intelligent Sensors and Advanced Sensing Materials of Hunan Province, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Yu Liu
- School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Da-Wei Deng
- School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Ying Xu
- School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Bo Wen
- School of Physics and Electronics, Henan University, Kaifeng 475001, P. R. China
| | - Zhen-Kun Tang
- College of Physics and Electronics Engineering, Hengyang Normal University, Hengyang 421008, China
| | - Xiao-Lin Wei
- Department of Physics and Laboratory for Quantum Engineering and Micro-Nano Energy Technology, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Qing-Xia Ge
- School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Wen-Jin Yin
- School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China
- Key Laboratory of Intelligent Sensors and Advanced Sensing Materials of Hunan Province, Hunan University of Science and Technology, Xiangtan 411201, China
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