ItemArticle

Lattice Distortion Suppressed in MoO3 by Incorporating Minor Impurities of rGO: Strategy for Enhanced Electrocatalytic Hydrogen Evolution

Title
Lattice Distortion Suppressed in MoO3 by Incorporating Minor Impurities of rGO: Strategy for Enhanced Electrocatalytic Hydrogen Evolution
Creator
Avani, A.V.; Li, Zhengyou; Babu, Chrisma Rose; Soldatov, Alexander V.; Hossain, Aslam; Anila, E.I.
Description
Structural stability is critical for improving the electronic properties and charge-transfer efficiency of the catalyst, directly contributing to its enhanced electrocatalytic hydrogen evolution reaction (HER) activity. In this study, orthorhombic MoO3 and rGO-MoO3 catalysts were synthesized by using a straightforward hydrothermal method, and they demonstrated excellent activity for electrochemical water splitting for hydrogen generation. In this study, conventional laboratory techniques, except for Raman spectroscopy, were unable to clearly detect or differentiate the presence and impact of a very small amount (0.5%) of rGO in MoO3. However, X-ray absorption fine structure analysis performed at the synchrotron facility provided definitive confirmation of the influence of minor rGO incorporation in this study. The analysis revealed that the incorporation of rGO suppresses lattice distortions and enhances the stability of local atomic coordination within the MoO3 framework. The Tafel slopes for MoO3 and rGO-MoO3 composite nanorods are 205 and 173 mV/dec, indicating improved reaction kinetics with rGO incorporation. The estimated specific capacitance values from the linear fit of CV at different scan rates are 2.0 mF/cm2 for MoO3 and 6.7 mF/cm2 for the rGO-MoO3 composite nanorods. Therefore, this study provides valuable insights into tuning the structural properties of materials and enhancing the HER performance through the incorporation of trace amounts of carbon-based materials, effectively suppressing lattice distortions. 2025 American Chemical Society.
Source
ACS Applied Energy Materials;Volume;8;Issue;7;pp.4456-4465
Date
01-01-2025
Publisher
American Chemical Society
Subject
electrocatalyst; energy; hydrogen; MoO3; nanocomposite; nanotubes
Coverage
Avani A.V., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India; Li Z., The Smart Materials Research Institute, Southern Federal University, Sladkova, 178/24, Rostov Oblast, Rostov-on-Don, 344090, Russian Federation; Babu C.R., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India; Soldatov A.V., The Smart Materials Research Institute, Southern Federal University, Sladkova, 178/24, Rostov Oblast, Rostov-on-Don, 344090, Russian Federation; Hossain A., The Smart Materials Research Institute, Southern Federal University, Sladkova, 178/24, Rostov Oblast, Rostov-on-Don, 344090, Russian Federation; Anila E.I., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 25740962;
Format
online
Language
English
Type
Article

Citation

Avani, A.V.; Li, Zhengyou; Babu, Chrisma Rose; Soldatov, Alexander V.; Hossain, Aslam; Anila, E.I., “Lattice Distortion Suppressed in MoO3 by Incorporating Minor Impurities of rGO: Strategy for Enhanced Electrocatalytic Hydrogen Evolution,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/22500.

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