| Ag_2O/FACs复合材料的制备及其光催化性能 |
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| 作者姓名： | 张惠灵 陈润泽 龚洁 蒋炘鑫 胡传智 石磊 |
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| 作者单位： | 武汉科技大学资源与环境工程学院;武汉科技大学冶金矿产资源高效利用与造块湖北省重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(51779157)；武汉科技大学大学生科技创新基金资助项目(18ZRB221). |
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| 摘 要： | 以经过酸化刻蚀改性的粉煤灰漂珠(FACs)为催化剂载体制备Ag_2O/FACs复合材料。借助SEM、XRD、FTIR、BET等对相关样品的物相结构及微观形貌进行表征,并通过亚甲基蓝(MB)溶液的光降解实验评价了所制复合材料的光催化性能。结果表明,尽管FACs改性前后的结构及化学组成差别不大,但酸化刻蚀处理能有效提高FACs的吸附性能;Ag_2O/FACs复合材料在近红外光条件下对亚甲基蓝溶液的降解率可达97.5%,并具有较高的催化稳定性;Ag_2O光生空穴在降解反应中起到重要作用。
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| 关 键 词： | Ag2O 粉煤灰漂珠 Ag2O/FACs复合材料 亚甲基蓝降解 光催化性能 酸化改性 |
| 收稿时间： | 2019/6/19 0:00:00 |
Preparation and photocatalytic performance of Ag2O/FACs composites |
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| Authors: | Zhang Huiling Chen Runze Gong Jie Jiang Xinxin Hu Chuanzhi and Shi Lei |
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| Affiliation: | College of Resources and Environmental Engineering,Wuhan University of Science and Technology, Wuhan 430081,China;Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan University of Science and Technology,Wuhan 430081,China,College of Resources and Environmental Engineering,Wuhan University of Science and Technology, Wuhan 430081,China,College of Resources and Environmental Engineering,Wuhan University of Science and Technology, Wuhan 430081,China;Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan University of Science and Technology,Wuhan 430081,China,College of Resources and Environmental Engineering,Wuhan University of Science and Technology, Wuhan 430081,China,College of Resources and Environmental Engineering,Wuhan University of Science and Technology, Wuhan 430081,China and College of Resources and Environmental Engineering,Wuhan University of Science and Technology, Wuhan 430081,China |
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| Abstract: | Fly ash cenospheres (FACs) were modified by acidification and etching,and then Ag2O/FACs composites were prepared by employing modified FACs as the catalyst support. The phase structure and morphology of the samples were characterized by SEM, XRD, FTIR, BET and so on, and the photocatalytic performance of as-prepared composites was evaluated by means of photocatalytic degradation of methylene blue solution. The results show that although the structures and chemical composition of FACs are not significantly different before and after modification, acidification and etching can effectively improve the adsorption property of FACs. The degradation rate of methylene blue solution catalyzed by Ag2O/FACs composites under near-infrared light condition can reach 97.5%,and the Ag2O/FACs composites also show good catalytic stability. Photogenerated holes of Ag2O play an important role in degradation. |
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