期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 31, 页码 17381-17387出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b04640
关键词
boron; silicon; diatom frustules; photocatalysis; hydrogen
An effective solar-powered silicon device for hydrogen production from water splitting is a priority in light of diminishing fossil fuel vectors. There is increasing demand for nanostructuring in silicon to improve its antireflective properties for efficient solar energy conversion. Diatom frustules are naturally occurring biosilica nanostructures formed by biomineralizing microalgae. Here, we demonstrate magnesiothermic conversion of boron-doped silica diatom frustules from Aulacoseira sp. into nanostructured silicon with retention of the original shape. Hydrogen production was achieved for boron-doped silicon diatom frustules coated with indium phosphide nanocrystal layers and an iron sulfur carbonyl electrocatalyst.
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