Surface acidity modulates the peroxidase-like activity of nanoclay

Hao Wang; Muhammad Tariq Sarwar; Wenxin Bao; Luyuan Tian; Huaming Yang

doi:10.1039/d2cc04213d

Surface acidity modulates the peroxidase-like activity of nanoclay

Chem Commun (Camb). 2022 Oct 4;58(79):11135-11138. doi: 10.1039/d2cc04213d.

Authors

Hao Wang^{1

2

3}, Muhammad Tariq Sarwar^{1

2

3}, Wenxin Bao^{1

2

3}, Luyuan Tian^{1

2

3}, Huaming Yang^{1

2

3

4}

Affiliations

¹ Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, 430074, China. hm.yang@cug.edu.cn.
² Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China.
³ Key Laboratory of Functional Geomaterials in China Nonmetallic Minerals Industry, China University of Geosciences, Wuhan, 430074, China.
⁴ Hunan Key Laboratory of Mineral Materials and Application, School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China.

PMID: 36106489
DOI: 10.1039/d2cc04213d

Abstract

A novel surface acidity modulation strategy allows us to obtain modified nanoclay with specific peroxidase (POD)-like catalytic activity. Fe³⁺ exchange could increase the surface acidity of modified montmorillonite (MMT), resulting in a significant enhancement of its POD-like activity. We proposed that the POD-like catalytic reaction followed the electron transfer pathway and ping-pong mechanism. Correspondingly the constructed colorimetric sensor for H₂O₂ exhibited high sensitivity and specificity.

MeSH terms

Bentonite*
Colorimetry / methods
Hydrogen Peroxide*
Peroxidase / metabolism
Peroxidases

Substances

Bentonite
Hydrogen Peroxide
Peroxidases
Peroxidase