Nano-engineered materials for H2 production by water photo-electrolysis

被引：28

作者：

Ampelli, C. ^{[1
]}

Passalacqua, R. ^{[1
]}

Perathoner, S. ^{[1
]}

Centi, G. ^{[1
]}

机构：

[1] Univ Messina, Dept Ind Chem & Mat Engn, I-98166 Messina, Italy

来源：

ICHEAP-9: 9TH INTERNATIONAL CONFERENCE ON CHEMICAL AND PROCESS ENGINEERING, PTS 1-3 | 2009年 / 17卷

关键词：

D O I：

10.3303/CET0917169

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Nano-engineered materials based on TiO(2)/Ti are proposed as suitable photo-catalysts in studies of novel processes for energy production by renewable and non-polluting sources. The samples, prepared by anodic oxidation, were tested in a laboratory scale photo-reactor, designed on purpose to maximize the catalytic performance of thin substrates in H(2) evolution by water splitting. The voltage applied during the anodization influences the mean dimension of the nanostructures, their wall thickness and degree of packing, and also their photo-catalytic performance. The surface characterization (made by FESEM, TEM, GAXRD, UV-Vis diffuse reflectance and current-time transients during the anodization process) revealed amorphous titania in the nano-structured thin films, the anatase phase appearing only after annealing up to 500 degrees C. Photo-catalytic results showed that H(2) production strongly depends on the quantity of titania anodized on the Ti substrate.

引用

页码：1011 / 1016

页数：6

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