Enhanced Photocatalytic Hydrogen Evolution Over CaTi1?x
Zr
x
O3 Composites Synthesized by Polymerized Complex Method |
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| Authors: | Wei Sun Shuqing Zhang Cheng Wang Zhixiang Liu Zongqing Mao |
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| Affiliation: | (1) Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, PR China;(2) College of Material Science and Chemistry Engineering, China University of Geosciences, Wuhan, 430074, PR China |
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| Abstract: | The solid solution of CaTi1−x
Zr
x
O3 (x = 0–0.15) was successfully synthesized by the polymerized complex (PC) method. This study has exhibited the advantage of
the PC method to prepare a highly active CaTiO3 compared with the conventional solid-state reaction (SSR) method. More importantly, further improvement in phase purity and
large surface area was achieved by the doping of Zr4+, leading to remarkable enhancement of photocatalytic activities compared to pure CaTiO3. The quantum yield for H2 evolution over the most active photocatalyst, Pt (1.0 wt%)/CaTi0.93Zr0.07O3, was 1.91% and 13.3% in photoreactions from pure water and aqueous ethanol solution, respectively for 0.1 g photocatalyst,
which was about 3.3 and 2.5 times compared to that of PC-derived CaTiO3. |
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| Keywords: | CaTi1 − x Zr x O3 Polymerized complex method Photocatalytic activity Hydrogen evolution |
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