| SnxZn(1-x)WO4光催化剂的水热合成及其可见光催化活性 |
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| 引用本文： | 王孟晴,陈建林,庞欣,毛星. SnxZn(1-x)WO4光催化剂的水热合成及其可见光催化活性[J]. 工业催化, 2014, 22(12): 949-952. DOI: 10.3969/j.issn.1008-1143.2014.12.011 |
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| 作者姓名： | 王孟晴 陈建林 庞欣 毛星 |
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| 作者单位： | 南京大学环境学院 污染控制与资源化研究国家重点实验室,江苏 南京 210023 |
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| 基金项目： | 王孟晴,1990年生,女,河南省郑州市人,在读硕士研究生,研究方向为水处理。 |
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| 摘 要： | 采用水热合成法制备新型可见光催化剂SnxZn(1-x)WO4,以甲基橙染料废水为探针污染物,考察Zn2+与Sn2+物质的量比、水热温度和水热时间对SnxZn(1-x)WO4光催化剂的催化活性、表面形貌和比表面积的影响。结果表明,在Zn2+与Sn2+物质的量比为0.25、水热温度100 ℃和水热时间12 h条件下,合成的Sn0.8Zn0.2WO4催化剂活性最好,光照30 min后,对甲基橙染料的脱色率达98.62%,较SnWO4催化剂(合成条件为原始pH值,160 ℃水热反应24 h)提高46.66%。采用水热合成法制备的催化剂SnxZn(1-x)WO4具有良好的可见光活性。
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| 关 键 词： | 催化剂工程 SnxZn(1-x)WO4光催化剂 可见光催化 水热合成 甲基橙降解 |
Hydrothermal synthesis of SnxZn(1-x)WO4 photocatalysts and their catalytic activity under visible light |
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| WANG Mengqing,CHEN Jianlin,PANG Xin,MAO Xing. Hydrothermal synthesis of SnxZn(1-x)WO4 photocatalysts and their catalytic activity under visible light[J]. Industrial Catalysis, 2014, 22(12): 949-952. DOI: 10.3969/j.issn.1008-1143.2014.12.011 |
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| Authors: | WANG Mengqing CHEN Jianlin PANG Xin MAO Xing |
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| Affiliation: | State Key Laboratory of Pollution Control & Resource Reuse, School of the Environment, ;Nanjing University, Nanjing 210023, Jiangsu, China |
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| Abstract: | The novel visible-light photocatalysts SnxZn（ 1-x）WO4was synthesized by hydrothermal method.The influence of Zn2 ＋/ Sn2 ＋molar ratio,hydrothermal synthetic temperature and time on photocatalytic activitiy of SnxZn（ 1-x）WO4catalysts was investigated by using methyl orange dye wastewater as probe pollutant. The as-prepared SnxZn（ 1-x）WO4catalysts were characterized by SEM and BET. The results showed that Sn0. 8Zn0. 2WO4 photocatalyst possessed the best photocatalytic activity under the preparation condition of Zn2 ＋/ Sn2 ＋molar ratio 0. 25,hydrothomal reaction temperature 100 ℃ and hydrothomal reaction time 12 h. After visible-light illumination for 30 min,methyl orange degradation rate over Sn0. 8Zn0. 2WO4 photocatalyst was 98. 62%,which was 46. 66% higher than that over Sn WO4 prepared under the condition of original p H and 160 ℃ hydrothermal reaction for 24 h. Therefore,SnxZn（ 1-x）WO4synthesized by hydrothermal method exhibited excellent photocatalytic activity under visible light irradiation. |
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| Keywords: | catalyst engineering Snx Zn(1-x)WO4 photocatalyst visible light catalysis hydrothermal synthesis methyl orange degradation |
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