The Effect of the Metal Impurities on the Stability, Chemical, and Sensing Properties of MoSe2 Surfaces
Boukhvalov D.W. Rakhimzhanov M.K. Shongalova A. Serikkanov A.S. Chuchvaga N.A. Osipov V.Y.
September 2025Multidisciplinary Digital Publishing Institute (MDPI)
Surfaces
2025#8Issue 3
In this study, we present a comprehensive theoretical analysis of modifications in the physical and chemical properties of MoSe2 upon the introduction of substitutional transition metal impurities, specifically, Ti, V, Cr, Fe, Co, Ni, Cu, W, Pd, and Pt. Wet systematically calculated the adsorption enthalpies for various representative analytes, including O2, H2, CO, CO2, H2O, NO2, formaldehyde, and ethanol, and further evaluated their free energies across a range of temperatures. By employing the formula for probabilities, we accounted for the competition among molecules for active adsorption sites during simultaneous adsorption events. Our findings underscore the importance of integrating temperature effects and competitive adsorption dynamics to predict the performance of highly selective sensors accurately. Additionally, we investigated the influence of temperature and analyte concentration on sensor performance by analyzing the saturation of active sites for specific scenarios using Langmuir sorption theory. Building on our calculated adsorption energies, we screened the catalytic potential of doped MoSe2 for CO2-to-methanol conversion reactions. This paper also examines the correlations between the electronic structure of active sites and their associated sensing and catalytic capabilities, offering insights that can inform the design of advanced materials for sensors and catalytic applications.
catalysis , DFT , dichalcogenides , impurities , sensing
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Institute of Materials Physics and Chemistry, College of Science, Nanjing Forestry University, Nanjing, 210037, China
Institute of Physics and Technology, Satbayev University, Ibragimov str. 11, Almaty, 050032, Kazakhstan
DOC Co., Ltd., Ibragimov str. 9, Technopark Alatau, Almaty, 050032, Kazakhstan
National Academy of Sciences of the Republic of Kazakhstan Under the President of the Republic of Kazakhstan, Shevchenko str. 28, Almaty, 050010, Kazakhstan
International Research and Educational Center for Physics of Nanostructures, ITMO University, St. Petersburg, 197101, Russian Federation
Institute of Materials Physics and Chemistry
Institute of Physics and Technology
DOC Co.
National Academy of Sciences of the Republic of Kazakhstan Under the President of the Republic of Kazakhstan
International Research and Educational Center for Physics of Nanostructures
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