| Influence of calcination atmosphere on photocatalytic reactivity of K2La2Ti3O10 for water splitting |
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| 作者姓名： | 杨亚辉 邱冠周 陈启元 冯其明 尹周澜 |
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| 作者单位： | [1]School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China [2]School of Mineral Processing and Bioengineering, Central South University, Changsha 410083, China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | The layered perovskite type oxide K2La2Ti3O10 powders were prepared under air, Ar and H2 calcination atmospheres by sol-gel method and characterized by X-ray diffractometry, UV-Vis diffuse reflectance and X-ray photoelectron spectroscopy. The influence of the calcination atmosphere on the photocatalytic reactivity of K2La2Ti3O10 for hydrogen production was investigated. The photocatalytic reactivity of K2La2Ti3O10 prepared under air, Ar and H2 atmospheres was compared with that prepared under ultraviolet and visible light radiation using Г as electronic donor. The results show that K2La2Ti3O10 prepared under Ar and H2 atmospheres has higher photocatalytic activity for hydrogen production than that prepared under air atmosphere. The hydrogen production rates under ultraviolet irradiation are 127.5, 81.3 and 57.0 μmol/（L·h） and those under visible light irradiation are 40.2, 30.2 and 16.5 μmol/（L2h） respectively when K2La2Ti3O10 is prepared under Ar, H2 and air atmospheres.
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| 关 键 词： | K2La2Ti3O10 煅烧 钙钛矿型氧化物 光催化活性 氢 |
| 修稿时间： | 2006-09-282007-01-15 |
Influence of calcination atmosphere on photocatalytic reactivity of K2La2Ti3O10 for water splitting |
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| YANG Ya-hui,QIU Guan-zhou,CHEN Qi-yuan,FENG Qi-ming,YIN Zhou-lan.Influence of calcination atmosphere on photocatalytic reactivity of K2La2Ti3O10 for water splitting[J].Transactions of Nonferrous Metals Society of China,2007,17(4):836-840. |
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| Authors: | YANG Ya-hui QIU Guan-zhou CHEN Qi-yuan FENG Qi-ming YIN Zhou-lan |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; 2.School of Mineral Processing and Bioengineering, Central South University, Changsha 410083, China |
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| Abstract: | The layered perovskite type oxide K2La2Ti3O10 powders were prepared under air, Ar and H2 calcination atmospheres by sol-gel method and characterized by X-ray diffractometry, UV-Vis diffuse reflectance and X-ray photoelectron spectroscopy. The influence of the calcination atmosphere on the photocatalytic reactivity of K2La2Ti3O10 for hydrogen production was investigated.The photocatalytic reactivity of K2La2Ti3O10 prepared under air, Ar and H2 atmospheres was compared with that prepared under ultraviolet and visible light radiation using I- as electronic donor. The results show that K2La2Ti3O10 prepared under Ar and H2atmospheres has higher photocatalytic activity for hydrogen production than that prepared under air atmosphere. The hydrogen |
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| Keywords: | K2La2Ti3O10 calcination atmosphere photocatalytic activity hydrogen |
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