Pore-confined cobalt sulphide nanoparticles in a metal–organic framework as a catalyst for the colorimetric detection of hydrogen peroxide. Issue 15 (17th July 2022)

• Record Type: Journal Article
• Authors: Chen, You-Liang; Wang, Yi-Ching; Chen, Yu-Hsiu; Chang, Tzu-En; Shen, Cheng-Hui; Huang, Chi-Wei; Kung, Chung-Wei
• Is Part Of: Materials advances. Volume 3:Issue 15(2022)
• Page Start: 6364
• Page End: 6372
• Publication Date: 2022-07-17
• Subjects: 620.11
• DOI: 10.1039/d2ma00542e
• Languages: English
• ISSNs: 2633-5409

Abstract

Abstract : Cobalt sulphide nanoparticles solely confined within the nanopores of a water-stable Zr-based MOF are synthesized by a two-step approach. Abstract : In this study, nanoparticles of cobalt sulphide solely confined within the nanopores of a water-stable zirconium-based metal–organic framework (MOF), MOF-808, are synthesized by a two-step approach, with the first step being installing spatially dispersed cobalt ions within the entire framework of MOF-808 and the second step being solution-phase sulphurisation. The crystallinity, morphology, porosity, and loading of cobalt sulphide in the obtained nanocomposite are investigated. As a demonstration, the obtained nanocomposite is used as a heterogeneous catalyst for the redox reaction between 3, 3′, 5, 5′-tetramethylbenzidine (TMB) and H2 O2 in aqueous acetate buffer solutions. The pore-confined cobalt sulphide nanoparticles show remarkable catalytic activity, and the catalysis has typical Michaelis–Menten kinetics. Relying on the optical change that originated from the generation of oxidized TMB, as a demonstration, the nanocomposite can be utilized in the colorimetric quantification of H2 O2 .