One-pot synthesis of bimetallic Fe/Co incorporated silica hollow spheres with superior peroxidase-like activity  

作　　者：Wenli Zhao Wenhao Wang Fancang Meng Yang Du Qingmin Ji Heng-Dao Quan 

机构地区：[1]Herbert Gleiter Institute for Nanoscience,School of Materials Science and Engineering,Nanjing University of Science&Technology,Nanjing 210094,China [2]School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China [3]School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Chinese Chemical Letters》2023年第7期414-417,共4页中国化学快报（英文版）

基　　金：financial supports from the Instrument & Equipment Open Funding of Nanjing University of Science and Technology;National Natural Science Foundation of China (No. 21875108);the Fundamental Research Funds for the Central Universities (No. 30921013106)。

摘　　要：Mesoporous silica hollow spheres with a homogenous and high content distribution of Fe and Co were synthesized by a facile one-pot hydrothermal process. The sub-nanometer bimetallic components inside the silica framework facilitate the stable fixation and the open accessibility to active sites. The co-doped Fe/Co in the spheres showed excellent peroxidase-like activity and much higher catalytic performance than their monometallic-supported spheres. The synergistic effect between Fe and Co promotes the continuous formation of functional radicals during the oxidation process and thus accelerates the reaction rate. When used for colorimetric detection of hydrogen peroxide(H_(2)O_(2)), the Fe/Co incorporated silica hollow spheres show the capability of detection of H_(2)O_(2) in a wide range(10-250 μmol/L) and with the low detection limit of 0.012 ppm.

关 键 词：Bimetallic doping Mesoporous silica Hollow sphere Supported catalyst Peroxidase-like activity 

分 类 号：TQ426[化学工程]