Strain-Induced Tribocatalytic Activity of 2D ZnO Quantum Dots

Kumbhakar, P and Mishra, S and Kumbhakar, P and Barik, RK and Tiwary, CS and Singh, AK (2024) Strain-Induced Tribocatalytic Activity of 2D ZnO Quantum Dots. In: Journal of Physical Chemistry C .

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Abstract

The use of low-frequency vibration or high-frequency ultrasound waves to create polarization and an inherent electric field in piezo-tribocatalysts has recently been shown to be a novel advanced oxidation process. In this study, we have demonstrated the synthesis of two-dimensional (2D) ZnO quantum dots (QDs) and their strain-induced tribocatalytic effect, where the triboelectric charges generated under the influence of friction and strain are used to facilitate the decomposition of organic dye molecules. The catalytic performance of 2D QD catalysts can be tuned by modulation of the strain-induced band-gap variation, which are typically regarded as the active sites. The underlying mechanism for the strain-induced catalytic performance is due to the presence of defective dipole moments. Detailed theoretical investigations reveal strain-induced charge-transfer-dependent catalytic properties of the 2D ZnO QD-polymer interface. We believe that the present work provides a fundamental understanding of the design of high-performance catalysis applications for water cleaning and emerging technologies. © 2024 American Chemical Society.

Item Type:	Journal Article
Publication:	Journal of Physical Chemistry C
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to American Chemical Society.
Keywords:	Catalyst activity; Charge transfer; Electric fields; Energy gap; II-VI semiconductors; Nanocrystals; Synthesis (chemical); Zinc oxide, Advanced Oxidation Processes; Catalytic performance; High-frequency ultrasound; Low-frequency vibration; Organic dye molecules; Strain induced; Two-dimensional; Ultrasound waves; Vibration frequency; ZnO quantum dots, Semiconductor quantum dots
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	01 Aug 2024 06:58
Last Modified:	01 Aug 2024 06:58
URI:	http://eprints.iisc.ac.in/id/eprint/85775

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