期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 140, 期 45, 页码 15176-15180出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b09869
关键词
-
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning (MSIP) [NRF-2016R1A3B1907559]
Here, a highly selective solid-state nano crystal conversion strategy is developed toward concave iron oxide (Fe3O4) nanocube with an open-mouthed cavity engraved exclusively on a single face. The strategy is based on a novel heat-induced nanospace-confined domino-type migration of Fe2+ ions from the SiO2-Fe3O4 interface toward the surrounding silica shell and concomitant self-limiting nanoscale phase-transition to the Fe-silicate form. Equipped with the chemically unique cavity, the produced Janus-type concave iron oxide nanocube was further functionalized with controllable density of catalytic Pt-nanocrystals exclusively on concave sites and utilized as a highly diffusive catalytic Janus nanoswimmer for the efficient degradation of pollutant dyes in water.
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