From Ensemble Electrochemistry to Nano-Impact Electrochemistry: Altered Reaction Selectivity

Rui Zhong; Xiaoyu Wang; Qianqian Tao; Jianhua Zhang; Chuhong Lin; Hui Wei; Yi-Ge Zhou

doi:10.1002/anie.202207270

From Ensemble Electrochemistry to Nano-Impact Electrochemistry: Altered Reaction Selectivity

Angew Chem Int Ed Engl. 2022 Sep 12;61(37):e202207270. doi: 10.1002/anie.202207270. Epub 2022 Aug 3.

Authors

Rui Zhong¹, Xiaoyu Wang², Qianqian Tao³, Jianhua Zhang¹, Chuhong Lin⁴, Hui Wei^{2

3}, Yi-Ge Zhou¹

Affiliations

¹ Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China.
² Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, 210023, China.
³ State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
⁴ School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.

PMID: 35819405
DOI: 10.1002/anie.202207270

Abstract

Selective electrochemical production of valued chemicals is of significant importance but remains a great challenge in chemistry. Conventional approaches for enhancing reaction selectivity focus on the improvement of the catalysts themselves. In this work, we systematically studied the reaction kinetics and mass transport behavior of LaNiO₃ nanocubes (LaNiO₃ NCs) catalyzed hydrogen peroxide reduction reaction (HPRR) at ensemble and single nanoparticle levels using nano-impact electrochemistry (NIE). We find that the selectivity of HPRR was altered at individual random-walk nanoparticles as compared to their ensemble counterpart without changing the reaction kinetics, due to the significantly enhanced mass transport at single nanoparticles. This discovery offers the scope of new catalytic approaches for engineering electrochemical reactions in general.

Keywords: Hydrogen Peroxide Reduction Reaction (HPRR); Lanio3 Naonocubes (Lanio3 NCs); Mass Transport; Nano-Impact Electrochemistry (NIE); Reaction Selectivity.

Abstract

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