近期，我院青年教师卞婷、肖蓓蓓，研究生孙标等的研究成果“Ion-Templated Fabrication of Pt-Cu Alloy Octahedra with Controlled Compositions for Electrochemical Detection of H2O2”在《Journal of Alloys and Compounds》（IF=3.779）上发表。
论文简介如下：
Introducing Pt-based bimetallic nanocrystals into biosensors as a modifying agent has aroused immense interests to develop advanced non-enzymatic sensors for detecting H2O2. In this study, Pt-Cu alloy octahedra with controlled compositions are prepared through a facile method serving as a modifying agent in biosensors for H2O2 detection. The formation of Pt-Cu octahedra is achieved by simultaneous reduction of H2PtCl6 and CuCl2 by using N, N-dimethylformamide without addition of any other capping agents. A key to the synthesis of Pt-Cu octahedra is the introduction of Cl- ions, which can act as a dynamic template to facilitate the preferential overgrowth and accelerate the overall reduction kinetics. Compare to commercial Pt/C and spherical Pt-Cu nanoparticles, the Pt-Cu octahedra modified biosensors show substantially enhanced activity towards H2O2 detection due to the unique synergetic effect between Pt and Cu and surface structure. Specifically, the electrode modified by Pt55Cu45 octahedra achieves the highest sensitivity and best selectivity in neutral solution with a detection limit of 0.17 μM.
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