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Photocatalytic Properties of Porous Silicon Nanowires.


ABSTRACT: Porous silicon nanowires are synthesized through metal assisted wet-chemical etch of highly-doped silicon wafer. The resulted porous silicon nanowires exhibit a large surface area of 337 m(2)·g(-1) and a wide spectrum absorption across the entire ultraviolet, visible and near infrared regime. We further demonstrate that platinum nanoparticles can be loaded onto the surface of the porous silicon nanowires with controlled density. These combined advancements make the porous silicon nanowires an interesting material for photocatalytic applications. We show that the porous silicon nanowires and platinum nanoparticle loaded porous silicon nanowires can be used as effective photocatalysts for photocatalytic degradation of organic dyes and toxic pollutants under visible irradiation, and thus are of significant interest for organic waste treatment and environmental remediation.

SUBMITTER: Qu Y 

PROVIDER: S-EPMC3242411 | biostudies-literature | 2010

REPOSITORIES: biostudies-literature

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Photocatalytic Properties of Porous Silicon Nanowires.

Qu Yongquan Y   Zhong Xing X   Li Yujing Y   Liao Lei L   Huang Yu Y   Duan Xiangfeng X  

Journal of materials chemistry 20100101 18


Porous silicon nanowires are synthesized through metal assisted wet-chemical etch of highly-doped silicon wafer. The resulted porous silicon nanowires exhibit a large surface area of 337 m(2)·g(-1) and a wide spectrum absorption across the entire ultraviolet, visible and near infrared regime. We further demonstrate that platinum nanoparticles can be loaded onto the surface of the porous silicon nanowires with controlled density. These combined advancements make the porous silicon nanowires an in  ...[more]

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