Preparation of Ag@AgBr/Bi2Fe4O9 and Study of Photocatalytic Performance
1. School of Chemical Engineering, Key Laboratory of Low-carbon Energy Materials, Shijiazhuang University, Shijiazhuang 050035, China
2. School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, China
| Abstract: | In this paper, the Ag@AgBr/Bi2Fe4O9 composite photocatalyst with different modified amounts was synthesized by hydrothermal method and in situ deposition-photoreduction method, and the surface morphology of the catalyst was characterized by SEM and other instruments, and it was found that the two composite photocatalysts were closely bonded and had a large contact area, which could effectively increase the reaction efficiency. We used the degradation efficiency of methylene blue (MB) solutions to analyze the photocatalytic activity of the catalyst. The results show that when the loading of Ag@AgBr is 20%, the degradation efficiency of Ag@AgBr/Bi2Fe4O9 on methylene blue solution within 2.5 h under visible light can be as high as 91.61%. The degradation rate of 20% Ag@AgBr/Bi2Fe4O9 was 2.98 times higher than Ag@AgBr and 7.85 times higher than that of Bi2Fe4O9. After that, we carried out cycling experiments on the composite photocatalyst with an appropriate amount of 20%, and found that its degradation effect did not decrease significantly. It has better stable performance; The quenching experiment of the composite photocatalyst showed that the main reaction substances degraded by the composite photocatalyst were • OH; At present, photocatalytic degradation still has certain limitations, but the emergence of composite photocatalysts has expanded the selection range of photocatalysts with excellent performance, has potential development space, and is of great significance for the rational exploitation and utilization of mineral resources at home and abroad and solving energy and environmental problems, which is worthy of our in-depth exploration. |
| Keywords: | Ag@AgBr/Bi2Fe4O9; Coupled Photocatalyst; Photocatalytic Degradation; Hydrothermal Method |
| DOI: | 10.57237/j.cse.2023.02.002 |
View:
Downloads:
Received: 23 May 2023
Accepted: 25 June 2023
Published Online: 29 June 2023
References
| [1] | 县涛, 孙小锋, 邸丽景, 等. Bi2Fe4O9纳米颗粒的水热制备及其对染料模拟太阳光光催化降解 [J]. 青海师范大学大学学报 (自然科学版), 2017 (02): 51-54. |
| [2] | 林双龙, 胡金山, 刘利, 等. Ag@AgX(X=Cl, Br, I)及其复合物光催化剂的研究进展 [J]. 化学通报, 2014, 77 (1): 37-43. |
| [3] | 刘依. Bi2Fe4O9/石墨烯复合材料的水热制备及光催化性能研究 [D]. 湖北: 武汉理工大学, 2015. |
| [4] | 席缘, 林华, 陈志莉, 等. 铋基可见光光催化剂的研究浅析 [J]. 广东化工, 2021, 48 (4): 46 - 63. |
| [5] | 金无量, 巫永鹏, 陈志斌, 等. Bi2Fe4O9的溶剂热法合成及其光催化性能 [J]. 稀有金属材料与工程, 2015, 44 (1): 657-661. |
| [6] | 聂龙辉, 黄征青, 徐洪涛, 等. Ag@AgBr光催化剂的制备及其可见光催化降解亚甲基蓝反应性能 [J]. 催化学报, 2012, 33 (7): 1209-1216. |
| [7] | 陈克来, 牛志成, 陈锶寒, 等. 复合催化材料Bi2Fe4O9/BiOCl的制备及其光催化性能实验设计 [J]. 实验技术与管理, 2021, 38 (7): 95-105. |
| [8] | 赵娣, 傅丽, 刘洪燕, 等. Ag@AgBr/GO/Ni等离子体光阴极膜电极的电荷转移机制和光电催化活性 [J]. 中国有色金属学报, 2021, 31 (12): 3614-3623. |
| [9] | LI X, FANG S, GE L, et al. Synthesis of flower-like Ag/AgCl-Bi2MoO6 plasmonic photocatalysts with enhanced visible-light photocatalytic performance [J]. Applied Catalysis B: Environmental, 2015, 176-177: 62-69. |
| [10] | 刘昊. Ag@AgBr/ZnO的制备及光催化氧化性能的研究[D]. 黑龙江: 哈尔滨商业大学, 2020. |
| [11] | 林双龙. Ag@AgX复合光催化剂的制备及活性研究 [D]. 河北: 河北联合大学, 2015. |
| [12] | MARIA IL. Heterogeneous photocatalysis: transition metal ions in photocatalytic systems [J]. Applied Catalysis B: Environmental, 1999, 23 (2): 89-114. |
| [13] | 黄建舒, 苏复, 刘志英, 等. Ag/AgBr/Bi2MoO6等离子体光催化剂的制备及其降解罗丹明B性能的研究 [J]. 现代化工, 2020, 40 (9): 89-95. |
| [14] | 刘峰. Ag/AgBr及其复合材料的制备和光催化性能研究[D]. 安徽: 安徽工业大学, 2016. |
| [15] | 郭本龙. 铁酸铋系材料的合成及其性质研究 [D]. 上海: 华东师范大学, 2018. |
| [16] | 县涛, 杨华, 戴剑锋, 等. 粒径可控的纳米铁酸铋的制备及其光催化性能 [J]. 催化学报, 2011, 32 (4): 618-623. |
| [17] | 陈险峙. 多铁性BiFeO3的水热合成、形貌与性能研究 [D]. 陕西: 陕西师范大学, 2011. |
| [18] | 梁少伟. BiFeO3及Bi2Fe4O9纳米材料的控制制备及性能研究 [D]. 安徽: 中国科学技术大学, 2017. |
| [19] | WANG X, ZHANG M, TIAN P, et al. A facile approach to pure-phase Bi2Fe4O9 nanoparticles sensitive to visible light [J]. Applied Surface Science, 2014, 321, 144-14. |
Join the Editorial Board
We invite active, qualified and high profile scientists and researchers to join as Editorial Board Members.
Join UsBecome a Reviewer
Scholars with a strong interest in reviewing are invited to join the reviewer panel to ensure the quality of the research to be published.
Join Us