聚乙烯吡咯烷酮
过氧化物酶
催化作用
催化效率
材料科学
纳米技术
化学工程
纳米晶
组合化学
纳米颗粒
化学
酶
有机化学
高分子化学
工程类
作者
Haihang Ye,Yuzi Liu,Ashima Chhabra,Emily Lilla,Xiaohu Xia
出处
期刊:ChemNanoMat
[Wiley]
日期:2016-12-21
卷期号:3 (1): 33-38
被引量:38
标识
DOI:10.1002/cnma.201600268
摘要
Abstract Peroxidase mimics composed of inorganic nanoparticles are expected to circumvent the inherent difficulties of natural peroxidases, and to provide enhanced performance in important applications such as diagnosis and imaging. Despite the reports of a variety of peroxidase mimics in the past decade, very limited progress has been made on improving their catalytic efficiency. The catalytic efficiencies of most previously reported mimics are only up to one order of magnitude higher than those of natural peroxidases. In this work, we demonstrate a highly efficient peroxidase—polyvinylpyrrolidone (PVP)‐capped Pt nanocubes of sub‐10 nm in size. These PVP‐capped Pt cubes are ≈200‐fold more active than the natural counterparts and exhibit a record‐high specific catalytic efficiency. In addition to the superior efficiency, the new mimic shows several other promising features, including excellent stabilities, well‐controlled uniformity in both size and shape, controllable sizes, and facile and scalable production.
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