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O'Ferrall LM, Fantasia A, Chan K, Teixeira LM, Kavanagh K, O'Connor C, Santos MA, Chaves S, Nurchi VM, Crisponi G, Zoroddu MA, Griffith DM, Cappai R. Solution studies, synthesis and antibacterial activity of Ga(III) complexes with bis-kojate derivatives. J Inorg Biochem 2024; 259:112663. [PMID: 39024775 DOI: 10.1016/j.jinorgbio.2024.112663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 07/03/2024] [Accepted: 07/11/2024] [Indexed: 07/20/2024]
Abstract
Given the recognized major problem of microbial drug resistance for human health, new metal-based drugs have been currently explored for their antimicrobial properties, including gallium-based compounds as potential metallophores that could perturb Fe's interactions with proteins. Herein we have designed and synthesized two bis-kojate ligands (named L4 and L6) and studied their Ga(III) complexes for their physico-chemical and biological properties. In particular a detailed study of their complexation properties in aqueous solution, showed equilibrium models with formation of quite stable dinuclear 2:3 metal:ligand complexes, though with different stability. Solid state complexes were also prepared and characterized and complementary DFT studies indicated that [Ga2(L4)3] complex, with higher stability, seems to adopt a three-ligand bridging conformation, while that for L6 adopt a one ligand bridging conformation. Preliminary investigation of the antibacterial activity of these gallium complexes showed antipseudomonal activity, which appeared higher for the complex with L4, a feature of potential interest for the scientific community.
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Affiliation(s)
- L More O'Ferrall
- Department of Chemistry, Royal College of Surgeons in Ireland, 123 St. Stephens Green, Dublin 2, Ireland; School of Food Science & Environmental Health, Technological University of Dublin, Dublin 7, Ireland
| | - A Fantasia
- Department of Chemical, Physical, Mathematical and Natural Sciences, University of Sassari, via Vienna 2, 07100 Sassari, Italy; Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria, 09042 Monserrato-Cagliari, Italy
| | - K Chan
- Department of Chemistry, Royal College of Surgeons in Ireland, 123 St. Stephens Green, Dublin 2, Ireland
| | - L M Teixeira
- Department of Chemistry, Royal College of Surgeons in Ireland, 123 St. Stephens Green, Dublin 2, Ireland
| | - K Kavanagh
- Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland; SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, Ireland
| | - C O'Connor
- School of Food Science & Environmental Health, Technological University of Dublin, Dublin 7, Ireland
| | - M A Santos
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Insituto Superior Técnico, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - S Chaves
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Insituto Superior Técnico, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - V M Nurchi
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria, 09042 Monserrato-Cagliari, Italy
| | - G Crisponi
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria, 09042 Monserrato-Cagliari, Italy
| | - M A Zoroddu
- Department of Chemical, Physical, Mathematical and Natural Sciences, University of Sassari, via Vienna 2, 07100 Sassari, Italy
| | - D M Griffith
- Department of Chemistry, Royal College of Surgeons in Ireland, 123 St. Stephens Green, Dublin 2, Ireland; SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, Ireland.
| | - R Cappai
- Department of Chemical, Physical, Mathematical and Natural Sciences, University of Sassari, via Vienna 2, 07100 Sassari, Italy.
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2
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Liu H, Huang Z, Qiao H, Qi X. Characteristics and performance of layered two-dimensional materials under doping engineering. Phys Chem Chem Phys 2024; 26:17423-17442. [PMID: 38869477 DOI: 10.1039/d4cp01261e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
In recent years, doping engineering, which is widely studied in theoretical and experimental research, is an effective means to regulate the crystal structure and physical properties of two-dimensional materials and expand their application potential. Based on different types of element dopings, different 2D materials show different properties and applications. In this paper, the characteristics and performance of rich layered 2D materials under different types of doped elements are comprehensively reviewed. Firstly, 2D materials are classified according to their crystal structures. Secondly, conventional experimental methods of charge doping and heterogeneous atom substitution doping are summarized. Finally, on the basis of various theoretical research results, the properties of several typical 2D material representatives under charge doping and different kinds of atom substitution doping as well as the inspiration and expansion of doping systems for the development of related fields are discussed. Through this review, researchers can fully understand and grasp the regulation rules of different doping engineering on the properties of layered 2D materials with different crystal structures. It provides theoretical guidance for further improving and optimizing the physical properties of 2D materials, improving and enriching the relevant experimental research and device application development.
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Affiliation(s)
- Huating Liu
- School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan 430023, China.
- Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, School of Physics and Optoelectronic, Xiangtan University, Xiangtan, 411105, China.
| | - Zongyu Huang
- Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, School of Physics and Optoelectronic, Xiangtan University, Xiangtan, 411105, China.
| | - Hui Qiao
- Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, School of Physics and Optoelectronic, Xiangtan University, Xiangtan, 411105, China.
| | - Xiang Qi
- Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, School of Physics and Optoelectronic, Xiangtan University, Xiangtan, 411105, China.
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3
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Zhang H, Zhang R, Hu S, Yang K, Wang Q, Dong H, Ni Y, Feng W. BTEX sensing potential of elemental-doped graphene: a DFT study. Phys Chem Chem Phys 2023; 25:30708-30715. [PMID: 37934014 DOI: 10.1039/d3cp04206e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Elementally-doped graphene demonstrates remarkable gas sensing capabilities as a novel 2D sensor material. In this study, we employed density functional theory calculations, we investigated the impact of various dopants on the BTEX (benzene, toluene, ethylbenzene, and xylene) sensing performance of graphene. Through the systematic analysis of electronic structures and sensitivity, we observed that both the doping method and dopant type significantly influence the interactions between graphene and BTEX molecules. Out of the 22 different elemental doped graphenes studied, N-, O-, and Pd-doped graphenes emerged as promising candidates for BTEX sensor materials. Graphene with N-doping exhibited relatively higher sensitivity towards toluene, ethylbenzene, and xylene compared to O- and Pd-doped graphenes. However, it demonstrated low sensitivity towards benzene. On the other hand, O-doped graphene displayed excellent selectivity for ethylbenzene over the other three gas molecules (benzene, toluene, and xylene). Similarly, Pd-doped graphene also exhibited significant selectivity for ethylbenzene and possessed higher sensitivity than the O-doped graphene. Their distinct characteristics and sensitivities make them potential candidates for future applications in gas sensing technology.
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Affiliation(s)
- Hongping Zhang
- School of Mechanical Engineering, Institute for Advanced Study, Chengdu University, Sichuan 610041, China.
| | - Run Zhang
- School of Materials and Chemistry, Southwest University of Science and Technology, Sichuan 621010, China
| | - Shuchun Hu
- School of Materials and Environmental Engineering, Chengdu Technological University, Chengdu, 611730, China
| | - Kun Yang
- School of Mechanical Engineering, Institute for Advanced Study, Chengdu University, Sichuan 610041, China.
| | - Qingyuan Wang
- School of Mechanical Engineering, Institute for Advanced Study, Chengdu University, Sichuan 610041, China.
| | - Huilong Dong
- School of Materials Engineering, Changshu Institute of Technology, Changshu, Jiangsu, 215500, China
| | - Yuxiang Ni
- School of Physical Science and Technology, Southwest Jiaotong University, Chengdu, Sichuan 600031, China
| | - Wei Feng
- School of Mechanical Engineering, Institute for Advanced Study, Chengdu University, Sichuan 610041, China.
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4
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Serdaroğlu G, Kariper IA, Kariper SEB. Molecular modeling study on the water-electrode surface interaction in hydrovoltaic energy. Sci Rep 2023; 13:12803. [PMID: 37550420 PMCID: PMC10406928 DOI: 10.1038/s41598-023-39888-8] [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: 02/14/2023] [Accepted: 07/05/2023] [Indexed: 08/09/2023] Open
Abstract
The global energy problem caused by the decrease in fossil fuel sources, which have negative effects on human health and the environment, has made it necessary to research alternative energy sources. Renewable energy sources are more advantageous than fossil fuels because they are unlimited in quantity, do not cause great harm to the environment, are safe, and create economic value by reducing foreign dependency because they are obtained from natural resources. With nanotechnology, which enables the development of different technologies to meet energy needs, low-cost and environmentally friendly systems with high energy conversion efficiency are developed. Renewable energy production studies have focused on the development of hydrovoltaic technologies, in which electrical energy is produced by making use of the evaporation of natural water, which is the most abundant in the world. By using nanomaterials such as graphene, carbon nanoparticles, carbon nanotubes, and conductive polymers, hydrovoltaic technology provides systems with high energy conversion performance and low cost, which can directly convert the thermal energy resulting from the evaporation of water into electrical energy. The effect of the presence of water on the generation of energy via the interactions between the ion(s) and the liquid-solid surface can be enlightened by the mechanism of the hydovoltaic effect. Here, we simply try to get some tricky information underlying the hydrovoltaic effect by using DFT/B3LYP/6-311G(d, p) computations. Namely, the physicochemical and electronic properties of the graphene surface with a water molecule were investigated, and how/how much these quantities (or parameters) changed in case of the water molecule contained an equal number of charges were analyzed. In these computations, an excess of both positive charge and negative charge, and also a neutral environment was considered by using the Na+, Cl-, and NaCl salt, respectively.
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Affiliation(s)
- Goncagül Serdaroğlu
- Mathematics and Science Education, Faculty of Education, Sivas Cumhuriyet University, Sivas, Turkey
| | - I Afşin Kariper
- Education Faculty, Erciyes University, Kayseri, Turkey
- Erciyes Teknopark, Building 1, No. 41, Kayseri, Turkey
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Kadhim MM, Sadoon N, Abdullaha SA, Sabri Abbas Z, Mahdi Rheima A, Hachim SK. Evaluation the sensing affinities of Propylene oxide towards B2N2 monolayer: A dispersion corrected DFT study. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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6
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Denis PA. Theoretical Characterization of codoped bilayer graphene. COMPUT THEOR CHEM 2023. [DOI: 10.1016/j.comptc.2023.114035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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7
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Ahmed MT, Islam S, Ahmed F. Density functional theory study of Mobius boron-carbon-nitride as potential CH 4, H 2S, NH 3, COCl 2 and CH 3OH gas sensor. ROYAL SOCIETY OPEN SCIENCE 2022; 9:220778. [PMID: 36340512 PMCID: PMC9627448 DOI: 10.1098/rsos.220778] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
The interesting properties of Mobius structure and boron-carbon-nitride (BCN) inspired this research to study different characteristics of Mobius BCN (MBCN) nanoribbon. The structural stability and vibrational, electrical and optical properties are analysed using the density functional theory. The gas-sensing ability of the modelled MBCN structure was also studied for methane, hydrogen sulfide, ammonia, phosgene and methanol gases. The negative adsorption energy and alteration of electronic bandgap verified that MBCN is very sensitive toward the selected gases. The complex structures showed a high absorption coefficient with strong chemical potential and 7 ps-0.3 ms recovery time. The negative change in entropy signifies that all the complex structures were thermodynamically stable. Among the selected gases, the MBCN showed the strongest interaction with methanol gas.
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Affiliation(s)
| | - Shariful Islam
- Department of Physics, Jahangirnagar University, Dhaka 1342, Bangladesh
| | - Farid Ahmed
- Department of Physics, Jahangirnagar University, Dhaka 1342, Bangladesh
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8
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Al-Otaibi JS, Mary YS, Mary YS, Acharjee N, Churchill DG. Spectroscopic studies of 5-fluoro-1H-pyrimidine-2,4-dione adsorption on nanorings, solvent effects and SERS analysis. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Liu G, Chen T, Dong X, Huang L, Xu Z, Xiao X. High gas sensing performance of inorganic and organic molecule sensing devices based on the BC 3N 2 monolayer. Phys Chem Chem Phys 2022; 24:23769-23778. [PMID: 36156033 DOI: 10.1039/d2cp01882a] [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
Recently, a novel two-dimensional (2D) BC3N2 monolayer has gained a lot of attention due to its graphene-like structure, and it was first reported by using the particle swarm optimization algorithm and ab initio calculations. Combining density functional theory with the non-equilibrium Green's function method, a 2D BC3N2-based nanodevice has been theoretically constructed and the gas sensing performance of the BC3N2 monolayer for inorganic and organic molecules has been extensively investigated. The results revealed that the BC3N2 monolayer remains metallic with thermodynamic stability. Meanwhile, the results of sensing performance analysis show that the inorganic molecules CO, NO, and NO2 and organic molecules C2H2 and HCHO have strong chemical interactions with BC3N2 and were chemically adsorbed onto BC3N2. In contrast, the interactions between NH3, SO2, CH4, C2H4 and CH3OH and BC3N2 are very weak and these molecules adopt physical adsorption. In the case of chemisorption, the electronic transport behaviors of the 2D BC3N2 devices are sensitive to molecules, and the gas sensitivity of BC3N2 is strongly anisotropic, especially for organic C2H2 with the gas sensing ratios from 7.30 to 10.43 (from 2.51 to 2.79) under different bias voltages along the zigzag (armchair) direction. For inorganic molecules, the gas sensing device is not particularly sensitive, and the maximum gas sensing ratio is only 1.36 for CO. Meanwhile, the large anisotropic gas sensitivity can reach up to 2.66/6.22 for electron transport along the armchair and zigzag directions for CO/C2H2 in the BC3N2-based sensing devices. Accordingly, the high gas sensitivity can be disclosed by displaying the scattering state around the Fermi level at different bias voltages during the transport process. As a result, BC3N2 could be used in 2D gas sensing devices, especially for sensing organic molecule C2H2.
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Affiliation(s)
- Guogang Liu
- Energy Materials Computing Center, Jiangxi University of Science and Technology, Nanchang 330013, China.
| | - Tong Chen
- Energy Materials Computing Center, Jiangxi University of Science and Technology, Nanchang 330013, China. .,State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, P. R. China
| | - Xiansheng Dong
- Energy Materials Computing Center, Jiangxi University of Science and Technology, Nanchang 330013, China.
| | - Lin Huang
- Energy Materials Computing Center, Jiangxi University of Science and Technology, Nanchang 330013, China.
| | - Zhonghui Xu
- Energy Materials Computing Center, Jiangxi University of Science and Technology, Nanchang 330013, China.
| | - Xianbo Xiao
- School of Computer Science, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China.
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10
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Kadhim MM, Sh. Jassim G, Fadhel Obaid R, Zedan Taban T, Almashhadani HA, Hachim SK, Sharma S. Potential application of some metal decorated AlP nano-sheet for detection of boron trichloride. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Patel S, Patel P, Chodvadiya D, Som NN, Jha PK. Adsorption performance of C12, B6N6 and Al6N6 nanoclusters towards hazardous gas molecules: A DFT investigation for gas sensing and removal application. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118702] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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12
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Syaahiran M, Mahadi AH, Lim CM, Kooh MR, Chau YFC, Chiang HP, Thotagamuge R. Theoretical Study of CO Adsorption Interactions with Cr-Doped Tungsten Oxide/Graphene Composites for Gas Sensor Application. ACS OMEGA 2022; 7:528-539. [PMID: 35036721 PMCID: PMC8756807 DOI: 10.1021/acsomega.1c04936] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 12/06/2021] [Indexed: 05/29/2023]
Abstract
The present study explores the CO adsorption properties with graphene, tungsten oxide/graphene composite, and Cr-doped tungsten oxide/graphene composite using density functional theory (DFT) calculations. The results of the study reveal the Cr-doped tungsten oxide/graphene composites, g-CrW n-1O3n (n = 2 to 4), to have a lowered highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) energy gap, high surface reactivity, and a strong cluster-graphene binding energy, hence exhibiting a strong adsorption interaction with CO. The CO adsorption interaction shows physisorption properties by having a greater tendency for Mulliken and natural bond orbital (NBO) charge transfer supported by a strong physisorption interaction toward the g-CrW n-1O3n (n = 2 to 4) composite with HOMO-LUMO energy gaps of -0.638, -0.486, and -0.327 eV, respectively. The calculated photoelectron spectroscopy (PES) and infrared spectra combined with the visualized electrostatic potential and contour line confirm the population density of the physisorption interaction. The calculated results show that the g-CrW n-1O3n composite achieves a greater sensing ability by possessing the highest sensitivity, adsorption, and desorption characteristics for n = 2 (g-CrWO6 composite). In conclusion, Cr-doped tungsten oxide/graphene has high sensitivity toward CO gas.
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Affiliation(s)
- Mohammad
Ammar Syaahiran
- Centre
for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Abdul Hanif Mahadi
- Centre
for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Chee Ming Lim
- Centre
for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Muhammad Raziq
Rahimi Kooh
- Centre
for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Yuan-Fong Chou Chau
- Centre
for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Hai-Pang Chiang
- Department
of Optoelectronics and Materials Technology, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Roshan Thotagamuge
- Centre
for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
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Lu C, Zhao H, Wang S, Tang Y. Theoretical investigation on the gas phase reaction mechanism of methanol with Sn and Pb in sludge incineration. J PHYS ORG CHEM 2021. [DOI: 10.1002/poc.4291] [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]
Affiliation(s)
- Chenggang Lu
- School of Environmental and Municipal Engineering Qingdao University of Technology Qingdao China
| | - Hui Zhao
- School of Environmental and Municipal Engineering Qingdao University of Technology Qingdao China
| | - Shuangjun Wang
- School of Environmental and Municipal Engineering Qingdao University of Technology Qingdao China
| | - Yizhen Tang
- School of Environmental and Municipal Engineering Qingdao University of Technology Qingdao China
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14
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Palladium-Functionalized Graphene for Hydrogen Sensing Performance: Theoretical Studies. ENERGIES 2021. [DOI: 10.3390/en14185738] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The adsorption characteristics of H2 molecules on the surface of Pd-doped and Pd-decorated graphene (G) have been investigated using density functional theory (DFT) calculations to explore the sensing capabilities of Pd-doped/decorated graphene. In this analysis, electrostatic potential, atomic charge distribution, 2D and 3D electron density contouring, and electron localization function projection, were investigated. Studies have demonstrated the sensing potential of both Pd-doped and Pd-decorated graphene to H2 molecules and have found that the gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO), i.e., the HOMO-LUMO gap (HLG), decreases to 0.488 eV and 0.477eV for Pd-doped and Pd-decorated graphene, respectively. When H2 is adsorbed on these structures, electrical conductivity increases for both conditions. Furthermore, chemical activity and electrical conductivity are higher for Pd-decorated G than Pd-doped G, whereas the charge transfer of Pd-doped graphene is far better than that of Pd-decorated graphene. Also, studies have shown that the adsorption energy of Pd-doped graphene (−4.3 eV) is lower than that of Pd-decorated graphene (−0.44 eV); a finding attributable to the fact that the recovery time for Pd-decorated graphene is lower compared to Pd-doped graphene. Therefore, the present analysis confirms that Pd-decorated graphene has a better H2 gas sensing platform than Pd-doped graphene and, as such, may assist the development of nanosensors in the future.
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Ren F, Yao M, Li M, Wang H. Tailoring the Structural and Electronic Properties of Graphene through Ion Implantation. MATERIALS 2021; 14:ma14175080. [PMID: 34501170 PMCID: PMC8434381 DOI: 10.3390/ma14175080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 01/29/2023]
Abstract
Ion implantation is a superior post-synthesis doping technique to tailor the structural properties of materials. Via density functional theory (DFT) calculation and ab-initio molecular dynamics simulations (AIMD) based on stochastic boundary conditions, we systematically investigate the implantation of low energy elements Ga/Ge/As into graphene as well as the electronic, optoelectronic and transport properties. It is found that a single incident Ga, Ge or As atom can substitute a carbon atom of graphene lattice due to the head-on collision as their initial kinetic energies lie in the ranges of 25–26 eV/atom, 22–33 eV/atom and 19–42 eV/atom, respectively. Owing to the different chemical interactions between incident atom and graphene lattice, Ge and As atoms have a wide kinetic energy window for implantation, while Ga is not. Moreover, implantation of Ga/Ge/As into graphene opens up a concentration-dependent bandgap from ~0.1 to ~0.6 eV, enhancing the green and blue light adsorption through optical analysis. Furthermore, the carrier mobility of ion-implanted graphene is lower than pristine graphene; however, it is still almost one order of magnitude higher than silicon semiconductors. These results provide useful guidance for the fabrication of electronic and optoelectronic devices of single-atom-thick two-dimensional materials through the ion implantation technique.
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16
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Graphene-based materials: A new tool to fight against breast cancer. Int J Pharm 2021; 603:120644. [PMID: 33964335 DOI: 10.1016/j.ijpharm.2021.120644] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/11/2021] [Accepted: 04/21/2021] [Indexed: 12/30/2022]
Abstract
Breast cancer is one of the most common malignant tumors among women population on a global scale, with a huge number of new cases and deaths each year. In recent years, there has been an increasing number of literatures on the discovery and development of novel anti-breast cancer drugs and materials, aiming to increase the survival rate of breast cancer patients. One of the newest tools used for the therapy of breast cancer is graphene-based materials, which have ultra-high surface area as well as unique physical, chemical and mechanical properties. It is reported that graphene-based materials could induce apoptosis in cancer cells while showing low toxicity due to their carbon structure. Therefore, they can be used as nano-drugs or biological carriers to introduce small molecules such as nucleic acids, drugs, or photosensitizers into the human body to achieve treatment goals. This article introduces the synthetic methods for graphene-based materials, as well as the current status and the future prospects of graphene-based materials' application in the treatment of breast cancer.
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Rouhani M. Computational evaluation of B(OH)-doped graphene efficiency for detecting of Methyl isocyanate (MIC). INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108552] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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A DFT study on the electronic detection of mercaptopurine drug by boron carbide nanosheets. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113166] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Liao Y, Peng R, Peng S, Zeng W, Zhou Q. The Adsorption of H 2 and C 2H 2 on Ge-Doped and Cr-Doped Graphene Structures: A DFT Study. NANOMATERIALS 2021; 11:nano11010231. [PMID: 33467187 PMCID: PMC7830370 DOI: 10.3390/nano11010231] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 11/16/2022]
Abstract
In order to find an excellent sensing material for dissolved gases in transformer oil, the adsorption structures of intrinsic graphene (IG), Ge-doped graphene (GeG), and Cr-doped graphene (CrG) to H2 and C2H2 gas molecules were built. It was found that the doping site right above C atom (T) was the most stable structure by studying three potential doping positions of the Ge and Cr atom on the graphene surface. Then, the structural parameters, density of states, and difference state density of these adsorption systems were calculated and analyzed based on the density functional calculations. The results show that the adsorption properties of GeG and CrG systems for H2 and C2H2 are obviously better than the IG system. Furthermore, by comparing the two doping systems, CrG system exhibits more outstanding adsorption performances to H2 and C2H2, especially for C2H2 gas. Finally, the highest adsorption energy (-1.436 eV) and the shortest adsorption distance (1.981 Å) indicate that Cr-doped graphene is promising in the field of C2H2 gas-sensing detection.
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Affiliation(s)
- Yiming Liao
- College of Engineering and Technology, Southwest University, Chongqing 400715, China; (Y.L.); (R.P.)
| | - Ruochen Peng
- College of Engineering and Technology, Southwest University, Chongqing 400715, China; (Y.L.); (R.P.)
| | - Shudi Peng
- Chongqing Electric Power Research Institute, State Grid Chongqing Electric Power Company, Chongqing 401123, China;
| | - Wen Zeng
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
- Correspondence: (W.Z.); (Q.Z.); Tel.: +86-130-683-05845 (Q.Z.)
| | - Qu Zhou
- College of Engineering and Technology, Southwest University, Chongqing 400715, China; (Y.L.); (R.P.)
- Correspondence: (W.Z.); (Q.Z.); Tel.: +86-130-683-05845 (Q.Z.)
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Nezval D, Bartošík M, Mach J, Piastek J, Švarc V, Konečný M, Šikola T. Density functional study of gallium clusters on graphene: electronic doping and diffusion. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:025002. [PMID: 32906101 DOI: 10.1088/1361-648x/abb683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Motivated by experimental results on transport properties of graphene covered by gallium atoms, the density functional theory study of clustering of gallium atoms on graphene (up to a size of 8 atoms) is presented. The paper explains a rapid initial increase of graphene electron doping by individual Ga atoms with Ga coverage, which is continually reduced to zero, when bigger multiple-atom clusters have been formed. According to density functional theory calculations with and without the van der Waals correction, gallium atoms start to form a three-dimensional cluster from five and three atoms, respectively. The results also explain an easy diffusion of Ga atoms while forming clusters caused by a small diffusion barrier of 0.11 eV. Moreover, the calculations show this barrier can be additionally reduced by the application of an external electric field, which was simulated by the ionization of graphene. This effect offers a unique possibility to control the cluster size in experiments only by applying a gate-voltage to the graphene in a field-effect transistor geometry and thereby without growth temperature assistance.
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Affiliation(s)
- D Nezval
- Institute of Physical Engineering, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic
| | - M Bartošík
- Institute of Physical Engineering, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic
- Department of Physics and Materials Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic
| | - J Mach
- Institute of Physical Engineering, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic
| | - J Piastek
- Institute of Physical Engineering, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic
| | - V Švarc
- Institute of Physical Engineering, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic
| | - M Konečný
- Institute of Physical Engineering, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic
| | - T Šikola
- Institute of Physical Engineering, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic
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Adsorption studies on small toxic gases using silicane nanosheet as a chemi-resistive sensor – DFT method. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.113046] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Wu M, Kumar A. Pt-decorated graphene-like AlN nanosheet as a biosensor for tioguanine drug: A computational study. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.112976] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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