纳米颗粒
光催化
贵金属
纳米技术
金属
纳米晶
酒精氧化
表面增强拉曼光谱
纳米结构
作者
Xiaowei Ma,Sisi Wen,Xiangxin Xue,Yue Guo,Jing Jin,Wei Song,Bing Zhao
标识
DOI:10.1021/acsami.8b03457
摘要
Fabrication of multifunctional nanocatalysts with surface-enhanced Raman scattering (SERS) activity is of vital importance for monitoring catalytic courses in situ and studying the reaction mechanisms. Herein, SERS-active magnetic metal–organic framework (MOF)-based nanocatalysts were successfully prepared via a three-step method, including a solvothermal reaction, an Au seed-induced growth process, and a low-temperature cycling self-assembly technique. The as-synthesized magnetic MOF-based nanocatalysts not only exhibit outstanding peroxidase-like activity, but can also be applied as a SERS substrate. Owing to these features, they can be used for monitoring in situ catalytic oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) by H2O2 via a SERS technique, and the concentration of H2O2 was determined. Owing to the intrinsic character of the Fe-based MOF material (MIL-100(Fe)), a novel photoinduced enhanced catalytic oxidation effect was demonstrated, in which the catalytic oxidation of TMB and o-phenylenedi...
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