| 负载型复合半导体光助催化二氧化碳和甲醇直接合成碳酸二甲酯 |
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| 引用本文： | 陈惠玲,肖敏,王拴紧,孟跃中.负载型复合半导体光助催化二氧化碳和甲醇直接合成碳酸二甲酯[J].中山大学学报(自然科学版),2009,48(Z2). |
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| 作者姓名： | 陈惠玲 肖敏 王拴紧 孟跃中 |
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| 作者单位： | 光电材料与技术国家重点实验室/中山大学光电功能复合材料研究院,广东,广州,510275 |
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| 摘 要： | 合成和表征了一种铜掺杂(Ni,Mo,O)负载于TiO2/SiO2(TSO)载体上的复合半导体材料,并用于由甲醇和直接光催化合成碳酸二甲酯(DMC).紫外可见光漫反射及测试结果表明:p-n型复合半导体催化剂可以增强对紫外光的吸收及扩展光响应范围,进而提高光催化性能.其中.w=1%Cu-(Ni,Mo,O)/TSO催化体系具有显著的反应活性和DMC选择性.
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| 关 键 词： | 碳酸二甲酯(DMC) 半导体 光催化剂 |
Direct Synthesis of Dimethyl Carbonate from CO2 and CH3 OH Using Supported Coupled Semiconductor with Photo-assistance |
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| CHEN Huiling,XIAO Min,WANG Shuanjin,MENG Yuezhong.Direct Synthesis of Dimethyl Carbonate from CO2 and CH3 OH Using Supported Coupled Semiconductor with Photo-assistance[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2009,48(Z2). |
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| Authors: | CHEN Huiling XIAO Min WANG Shuanjin MENG Yuezhong |
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| Abstract: | The supported copper and (Ni, Mo, O) on TiO2/SiO2 (TSO) coupled semiconductor photo catalyst for direct synthesis of dimethyl carbonate (DMC) from CO2 and CH3OH has been synthesized and investigated. The photo-absorption property of catalysts was characterized by ultraviolet visible drift reflection spectra (UV-Vis DRS). The results show that the p-n type catalyst of(Ni, Mo, O)/TSO enhances the adsorption of UV light and its edge energy is expanded which holds back the recombination of photo-excited elec-tron-hole pairs. By doping Cu the absorption region of material was expanded to visible light and evidently raised its photo-catalytic a-bility. The w = 1%Gu-(Ni, Mo, O)/TSO photo catalyst exhibited remarkably high activity and selectivity. |
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| Keywords: | dimethyl carbonate (DMC) semiconductor photo catalyst |
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