期刊
CHEMNANOMAT
卷 3, 期 1, 页码 33-38出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cnma.201600268
关键词
catalytic efficiency; nanocrystals; peroxidase mimics; platinum; surface capping
资金
- Michigan Technological University
- Michigan Translational Research & Commercialization Fund (MTRAC) of the 21st Century Jobs Trust Fund through the Michigan Strategic Fund from the State of Michigan [48161]
- Michigan Strategic Fund
- Michigan Economic Development Corporation
- Center for Nanoscale Materials, a U.S. Department of Energy Office of Science User Facility [DE-AC02-06CH11357]
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 peroxidasepolyvinylpyrrolidone (PVP)-capped Pt nanocubes of sub-10nm in size. These PVP-capped Pt cubes are approximate to 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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