Amir, Muhammad Nur Iman and Halilu, Ahmed and Julkapli, Nurhidayatullaili Muhd and Ma'amor, Azman (2023) Tuning lattice strain in Quasi-2D Au-rGO nanohybrid catalysts for dimethylphenylsilane solid state silylation to disiloxane. Materials Science and Engineering B-Advanced Functional Solid-State Materials, 291. ISSN 0921-5107, DOI https://doi.org/10.1016/j.mseb.2023.116395.
Full text not available from this repository.Abstract
This study investigates the effect of lattice strain on quasi-2D Au-rGO nanohybrids by growing cubic shape -controlled Au nanocrystals on rGO. To induce the lattice strain, a trisodium citrate capping agent and different concentrations of Au nanoparticles ranging from 0.2 to 1 mM were used. The 0.4 mM Au-rGO was confirmed with a low lattice strain differential of 0.1% between crystallographic planes (1 1 1), (200), (220), and (220) (311). The catalytic solid-state activity of 0.4 mM Au-rGO during conversion of dimethylphenylsilane to diphenyltetramethyldisiloxane is highest due to the low lattice strain differential. Following first-order ki-netics, more dimethylphenylsilane was converted to diphenyltetramethyldisiloxane at a rate of 5.5 mol. L-1s-1 and 0.75 s-1 rates constant after increasing the solid-state silylation reaction time to 12 h. The findings represent a significant advance towards understanding the synergy of lattice strain in nanomaterials and their activity for the development of quantum catalytic devices.
| Item Type: | Article |
|---|---|
| Funders: | Science and Technology Development Fund (STDF) Ministry of Higher Education & Scientific Research (MHESR) Ministry of Higher Education, Research & Innovation, Oman (FRGS/1/2017/STG01/UM/02/2), University of Malaya Research Grant (UMRG RP044B-17AET) |
| Uncontrolled Keywords: | Gold nanoparticles; Graphene oxide; Solventless catalysis; Silylation reaction; Single -atom catalyst |
| Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology |
| Divisions: | Faculty of Engineering > Department of Chemical Engineering Faculty of Science > Department of Chemistry Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 21 Jul 2025 02:44 |
| Last Modified: | 21 Jul 2025 02:44 |
| URI: | http://eprints.um.edu.my/id/eprint/50879 |
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