Grain boundary enriched CuO nanobundle for efficient non-invasive glucose sensors/fuel cells

Huijuan Yang; ShengBao Wang; Xingpu Wang; Pengyang Zhang; Cheng Yan; Yangyang Luo; Lina Chen; Mengjiao Li; Fan Fan; Zhiyou Zhou; Xifei Li

doi:10.1016/j.jcis.2021.11.105

Grain boundary enriched CuO nanobundle for efficient non-invasive glucose sensors/fuel cells

J Colloid Interface Sci. 2022 Mar:609:139-148. doi: 10.1016/j.jcis.2021.11.105. Epub 2021 Nov 25.

Authors

Huijuan Yang¹, ShengBao Wang¹, Xingpu Wang², Pengyang Zhang³, Cheng Yan¹, Yangyang Luo¹, Lina Chen³, Mengjiao Li¹, Fan Fan¹, Zhiyou Zhou⁴, Xifei Li⁵

Affiliations

¹ Institute of Advanced Electrochemical Energy, Shaanxi International Joint Research Centre of Surface Technology for Energy Storage Materials, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China.
² Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, China. Electronic address: puxwang@163.com.
³ State Key Laboratory of Physical Chemistry of Solid Surfaces, Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
⁴ State Key Laboratory of Physical Chemistry of Solid Surfaces, Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China. Electronic address: zhouzy@xmu.edu.cn.
⁵ Institute of Advanced Electrochemical Energy, Shaanxi International Joint Research Centre of Surface Technology for Energy Storage Materials, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China. Electronic address: xfli@xaut.edu.cn.

PMID: 34894548
DOI: 10.1016/j.jcis.2021.11.105

Abstract

Glucose oxidation reaction (GOR) plays a significant role in glucose fuel cells anode and glucose sensors. Therefore, optimizing the GOR catalyst nanostructure is auxiliary to their efficient operation. In this study, we present a cascade-assembled strategy to prepare CuO nanobundles (CuO-NB) with high-density and homogenous grainboundaries (GBs). The essence of activity in GOR that depended on GBs are thoroughly investigated. The increased glucose diffusion coefficient of CuO-NB means that GBs has a faster glucose mass transfer, which is attributed to the terraces in GBs dislocation surface. Furthermore, the accumulation of electrons on GBs makes the glucose adsorption increased and the free energy of dehydrogenation step decreased, leading to a lower glucose oxidation barrier. Therefore, CuO-NB is appropriate for non-invasive glucose detection and glucose fuel cells. This study sheds new light on the GBs effect in GOR and paves the way for developing high-efficiency electrocatalysts.

Keywords: Electrocatalysts; Glucose diffusion; Glucose oxidation; Grain boundary.

MeSH terms

Catalysis
Copper*
Electrodes
Glucose*

Substances

Copper
Glucose
cupric oxide