| 掺硼氧化银光催化剂制备及降解模拟印染废水 |
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| 引用本文： | 吴兆美, 曾娅, 王晓燕, 蒋炜, 袁绍军, 梁斌. 掺硼氧化银光催化剂制备及降解模拟印染废水[J]. 环境工程学报, 2016, 10(6): 2847-2854. doi: 10.12030/j.cjee.201501161 |
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| 作者姓名： | 吴兆美 曾娅 王晓燕 蒋炜 袁绍军 梁斌 |
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| 作者单位： | 1.四川大学化学工程学院, 四川省多相流传质与化学反应工程重点实验室, 成都 610065 |
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| 基金项目： | 国家自然科学基金资助项目(21176157,21476146) |
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| 摘 要： | 采用离子交换共沉淀法制备掺硼氧化银光催化剂并进行相应表征,以甲基橙为降解对象对其光催化氧化性能进行考察,并将其用于可见光下降解多种有机物及模拟印染废水。实验结果表明:掺硼氧化银光催化剂能带带隙为1.29 eV,具有很好的光催化氧化-还原能力,可见光下降解甲基橙,光照120 s可实现甲基橙完全降解;重复使用活性保持稳定;对不同有机物均可实现光催化氧化完全降解;模拟印染废水降解实验证实,在pH值5~10范围内,可见光照射下氧化银光催化剂在25 min内可实现混合染料的完全降解。掺硼氧化银是一种具有应用前景的可见光光催化剂。
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| 关 键 词： | 掺硼氧化银 光催化 硼酸 甲基橙 印染废水 |
| 收稿时间： | 2015-02-12 |
Preparation and application of boron-doped Ag2O photocatalyst for degradation of simulated dyeing wastewater |
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| Wu Zhaomei, Zeng Ya, Wang Xiaoyan, Jiang Wei, Yuan Shaojun, Liang Bin. Preparation and application of boron-doped Ag2O photocatalyst for degradation of simulated dyeing wastewater[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2847-2854. doi: 10.12030/j.cjee.201501161 |
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| Authors: | Wu Zhaomei Zeng Ya Wang Xiaoyan Jiang Wei Yuan Shaojun Liang Bin |
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| Affiliation: | 1.Multi-Phases Mass Transfer and Reaction Engineering Laboratory, College of Chemical Engineering, Sichuan University, Chengdu 610065, China |
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| Abstract: | In this study, a new photocatalyst, B-doped Ag2O, was synthesized using a facile ion-exchange method. The product was characterized and was applied for the photodegradation of some typical organic pollutants and simulated dyeing wastewater under visible light irradiation. The results showed that B-doped Ag2O was a superb photocatalyst having a band gap of 1.29 eV, and can completely decompose methyl orange in 120 s. The performance of B-doped Ag2O did not degrade after recycling. Typical organics such as rhodamine B, methylene blue, and phenol, and simulated dyeing wastewater were used as targets of photodegradation using B-doped Ag2O. The results confirmed the broad application of B-doped Ag2O as photocatalyst since different organic pollutants can be completely decomposed under different conditions. Thus, it can be concluded that B-doped Ag2O is a promising photocatalyst for future applications. |
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| Keywords: | B-doped Ag2O photo-catalysis boric acid methyl orange dyeing wastewater |
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