期刊论文

Liu, Meiling;Liu, Xiaoying

英文

Talanta

0039-9140

2019

202

354-361

10.1016/j.talanta.2019.05.034

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21645008, 21305042, 21375037]; Hunan Provincial Education DepartmentHunan Provincial Education Department [14B116, 18A010]; Science and Technology DepartmentScience and Technology Development Fund (STDF)United States Agency for International Development (USAID)US-Egypt Science and Technology Joint Fund [14JJ4030]; State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University [2013017]; Collaborative Innovation Center of New Chemical Technologies for Environmental Benignity and Efficient Resource Utilization; Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province

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A novel catalyst of FeCo nanoparticles (FeCo NPs) incorporated porous nanocages (FeCo NPs@PNC) was first synthesized by encapsulating of FeCo alloy into ZIF-8 and further carbonation of the composite. The FeCo NPs@PNC displays enhanced intrinsic oxidase-like activity compared to the individual FeCo NPs and porous nanocages (PNC). The FeCo NPs@PNC can catalyze the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) to oxidized TMB (oxTMB) without H2O2, producing a blue color with a maximum absorption peak at 652nm. The catalytic mechanism was investigated and it found that the intermediate (O2(.-...