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Atomically dispersed Ru3 site catalysts for electrochemical sensing of small molecules.

Atomically dispersed Ru3 site catalysts for electrochemical sensing of small molecules.

Authors :
Wu, Nannan
Zhong, Hong
Zhang, Yu
Wei, Xiaoqian
Jiao, Lei
Wu, Zhichao
Huang, Jiajia
Wang, Hengjia
Beckman, Scott P.
Gu, Wenling
Zhu, Chengzhou
Source :
Biosensors & Bioelectronics. Nov2022, Vol. 216, pN.PAG-N.PAG. 1p.
Publication Year :
2022

Abstract

Rational design and construction of electrochemical sensing platforms with high sensitivity and selectivity is one of the challenges in practical application. Although single-atom catalysts (SACs) have attracted extensive attention, atomically dispersed metal catalysts (ADCs) with multi-atom sites can further compensate for the deficiencies of SACs, which have gradually been a research hotspot in recent years. Herein, atomically dispersed Ru 3 site catalyst (Ru 3 /NC) is employed to catalyze small biomolecule oxidation, which exhibits much superior electrocatalytic ability of uric acid (UA) to Ru single-atom catalyst (Ru 1 /NC). What's more, theoretical calculations reveal that the enhanced performance is mainly derived from the dominant electronic structure of ADCs with multi-atom sites compared to SACs, leading to the more favorable adsorption of hydroxy anion groups, which can serve as one part of the active moiety and "promoter" to achieve the fast oxidation of small biomolecules. Our findings provide a new paradigm for designing promising catalysts to realize highly sensitive and selective small biomolecule detection and explore the catalytic mechanisms of small biomolecules at the atomic scale. [Display omitted] [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
09565663
Volume :
216
Database :
Academic Search Index
Journal :
Biosensors & Bioelectronics
Publication Type :
Academic Journal
Accession number :
159168463
Full Text :
https://doi.org/10.1016/j.bios.2022.114609