Bio-template synthesis of spirulina/TiO2 composite with enhanced photocatalytic performance

被引：18

作者：

Tu, Yu Di ^{[1
]}

Zhou, Zheng ^{[1
]}

Yan, Rong Jun ^{[1
]}

Gan, Yong Ping ^{[1
]}

Huang, Wan Zhen ^{[2
]}

Weng, Xian Xian ^{[1
]}

Huang, Hui ^{[1
]}

Zhang, Wen Kui ^{[1
]}

Tao, Xin Yong ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Coll Chem Engn & Mat Sci, Hangzhou 310014, Zhejiang, Peoples R China

[2] Zhejiang Univ Technol, Res Ctr Anal & Measurement, Hangzhou 310014, Zhejiang, Peoples R China

来源：

RSC ADVANCES | 2012年 / 2卷 / 28期

基金：

中国国家自然科学基金;

关键词：

SENSITIZED SOLAR-CELLS; HYDROGEN-PRODUCTION; HYBRID STRUCTURES; METHYL-ORANGE; SURFACE-AREA; 001; FACETS; TIO2; NANOPARTICLES; ANATASE; DEGRADATION;

D O I：

10.1039/c2ra21753h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A visible-light photocatalytic, mesoporous, hierarchical spirulina/TiO2 composite with dye-sensitized surface was fabricated through a one-step hydrothermal process. The microstructure, mesoporous characteristics, surface morphology, as well as the visible-light photocatalytic activities are studied. The spirulina/TiO2 had an anatase phase and an enhanced harvesting of visible light. It was found that the spirulina/TiO2 composite exhibited higher specific surface area with narrow distributed mesopores. The photocatalytic activity of spirulina/TiO2 was evaluated by decolorizing methyl orange aqueous solutions under visible light irradiation. As a bio-template, spirulina prevents TiO2 from further aggregating and provides photosynthesis pigments as in situ dye-sensitizing source. The enlarged specific surface area and dye-sensitized surface improved the visible-light photocatalytic activity of spirulina/TiO2.

引用

页码：10585 / 10591

页数：7

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