| 还原氧化石墨烯/介孔TiO2复合材料的合成及其光解水制氢性能 |
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| 引用本文： | 谢怡婷,谭涓,王亚飞,于靖,刘靖.还原氧化石墨烯/介孔TiO2复合材料的合成及其光解水制氢性能[J].无机化学学报,2018,34(12):2153-2160. |
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| 作者姓名： | 谢怡婷 谭涓 王亚飞 于靖 刘靖 |
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| 作者单位： | 大连理工大学化工与环境生命学部化工学院, 大连 116024,大连理工大学化工与环境生命学部化工学院, 大连 116024,大连理工大学化工与环境生命学部化工学院, 大连 116024,大连理工大学化工与环境生命学部化工学院, 大连 116024,大连理工大学化工与环境生命学部化工学院, 大连 116024 |
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| 摘 要： | 采用溶胶凝胶法,以钛酸四异丙酯(TTIP)为钛源,十六烷基三甲基溴化铵(CTAB)为模板剂合成了介孔二氧化钛样品mTiO_2,考察了合成温度、水量、模板剂用量和焙烧温度对其在紫外光条件下光催化产氢活性的影响。结果显示,在350℃下焙烧后,样品由无定形结构转变为锐钛矿相;随着焙烧温度的提高,锐钛矿相结构产物的结晶度提高,当焙烧温度超过550℃后,样品大部分转变为金红石相。以合成温度为30℃,模板剂用量(nCTAB/nTiO_2)为0.2,水量(nH2O/nTiO_2)为100,焙烧温度为450℃条件下合成的m-TiO_2样品为催化剂,当催化剂用量为0.4 g·L-1,体系中甲醇浓度高于20%(V/V)时,其紫外光条件下的光催化产氢活性达170 mmol·g-1·h-1。采用水热法将氧化石墨烯(GO)与m-TiO_2复合制备了一系列还原氧化石墨烯/介孔TiO_2复合材料(rGO/m-TiO_2),其晶相结构为锐钛矿相。当r GO复合量(wGO/wTiO_2)为0.01时,样品在紫外光下的产氢活性为241 mmol·g-1·h-1,能量转化效率达7.4%,较未复合样品提高了42.3%;在可见光条件下,其产氢活性达9 mmol·g-1·h-1。
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| 关 键 词： | 介孔材料 二氧化钛 光催化 制氢 水分解 |
| 收稿时间： | 2018/5/16 0:00:00 |
| 修稿时间： | 2018/9/25 0:00:00 |
Synthesis and Photocatalytic Performance of Mesoporous rGO/m-TiO2 Composites for Hydrogen Production by Photocatalytic Water Splitting |
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| XIE Yi-Ting,TAN Juan,WANG Ya-Fei,YU Jing and LIU Jing.Synthesis and Photocatalytic Performance of Mesoporous rGO/m-TiO2 Composites for Hydrogen Production by Photocatalytic Water Splitting[J].Chinese Journal of Inorganic Chemistry,2018,34(12):2153-2160. |
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| Authors: | XIE Yi-Ting TAN Juan WANG Ya-Fei YU Jing and LIU Jing |
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| Institution: | School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian, Liaoning 116024, China,School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian, Liaoning 116024, China,School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian, Liaoning 116024, China,School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian, Liaoning 116024, China and School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian, Liaoning 116024, China |
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| Abstract: | |
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| Keywords: | mesoporous materials titanium dioxidetitanium photocatalysis hydrogen production water splitting |
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