In the present study,we have prepared glutathione capped gold and platinum alloy nanoclusters(Au-PtNCs)in a controlled way by employing the hydrothermal method and optimized through adjusting the ratio of raw materials,reaction temperature,and time.Compared with the corresponding monometallic gold and platinum nanoclusters,the alloy nanoclusters'catalytic activity is improved dramatically in the oxidation of 3,3',5,5'-tetramethylbenzidine(TMB)in the presence of H2O2.And the maximum velocity is calculated to be 106×10-8 M·s-1 for TMB as substrate,being much better than that of other reported metallic nanoclusters and nanoparticles.Further study shows that the high catalytic activity mainly at-tributes to the synergistic effect of gold and platinum.Besides,they have been applied to determine H2O2 in the presence of TMB,which shows high sensitivity with a limit of detection(LOD)at 100 nM.The pro-posed method has been used to determine H2O2 in milk and contact lens solutions,which shows very good recovery and exhibits high practical application potential.Therefore,the present study provides a new type of alloy nanoclusters with high peroxidase-like activity,which will inspire more research inter-ests on doping and alloying with Pt to improve the catalytic activity of metal nanoclusters.

Yan-Cai Gao;Chong Wang;Chun-Xia Zhang;Hong-Wei Li;Yuqing Wu

State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,No.2699 Qianjin Street,Changchun 130012,China;Institute of Theoretical Chemistry,College of Chemistry,Jilin University,No.2 Liutiao Road,Changchun 130023,China;Department of Hepatic-Biliary-Pancreatic Medicine,First Hospital,Jilin University,No.71 Xinmin Street,Changchun 130021,China

材料科学技术（英文版）

[1]Yan-Cai Gao;Chong Wang;Chun-Xia Zhang;Hong-Wei Li;Yuqing Wu-.Controlled preparation and application of glutathione capped gold and platinum alloy nanoclusters with high peroxidase-like activity)[J].材料科学技术（英文版）,2022(14):140-146

PtNCs

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