| FeVO4/Cu3(BTC)2(H2O)3异质结制备及光催化性能 |
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| 引用本文： | 刘颖琪,翁文斌,岑檠,肖维,王齐,丛燕青,张轶.FeVO4/Cu3(BTC)2(H2O)3异质结制备及光催化性能[J].复合材料学报,2020,37(12):3128-3136. |
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| 作者姓名： | 刘颖琪 翁文斌 岑檠 肖维 王齐 丛燕青 张轶 |
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| 作者单位： | 浙江工商大学 环境科学与工程学院，杭州 310018 |
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| 基金项目： | 国家自然科学基金(21876154)；浙江省自然科学基金(LR18B070001) |
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| 摘 要： | 以Cu片和1, 3, 5-苯三甲酸为原料，电化学法制备经典Cu-MOF材料Cu3(BTC)2(H2O)3，即HKUST-1，作为基底金属有机框架材料(MOFs)，采用室温沉积法制备FeVO4/HKUST-1异质结复合材料，通过XRD、SEM、BET、UV-Vis DRS等对其晶体结构、形貌、比表面积、光吸收性能等进行了表征。结果表明:FeVO4与HKUST-1复合形成异质结后，有利于光生电子-空穴的产生和转移，对目标染料污染物罗丹明B(RhB)的降解性能显著增强。可见光照射120 min后，异质结体系中RhB的降解率可达93%，而单一FeVO4或HKUST-1体系中仅为12%和5%。此外，对材料的组成比例进行了优化，当FeVO4与HKUST-1摩尔比为1∶1时，制备的FeVO4/HKUST-1复合材料具有最佳的光催化性能。进一步，考察了其循环使用的稳定性，循环5次后对RhB的降解效率仍保持在90%以上，稳定性良好。
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| 关 键 词： | 金属有机骨架(MOFs) FeVO4 电化学法 复合材料 光催化 |
| 收稿时间： | 2020-07-23 |
Preparation and photocatalytic properties of FeVO4/Cu3(BTC)2(H2O)3 heterojunction |
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| Affiliation: | School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China |
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| Abstract: | The classic Cu-MOF material Cu3(BTC)2(H2O)3, which was also named HKUST-1, was prepared by electrochemical method using Cu flakes and 1, 3, 5-benzenetricarboxylic acid as the raw materials. Furthermore, the FeVO4/HKUST-1 heterojunction composites were prepared by room temperature deposition using HKUST-1 as the base metal organic framework material (MOFs). The crystal structure, morphology, specific surface area and optical absorption properties were characterized by XRD, SEM, BET, UV-Vis DRS, etc. The results indicate that the formation of the heterojunction between FeVO4 and HKUST-1 is beneficial for the generation and transfer of the photogenerated electron-hole pairs. The degradation performance of target dye pollutant rhodamine B (RhB) is significantly enhanced. After visible light irradiating for 120 min, the degradation efficiency to RhB can reach 93% in the heterojunction system, while only 12% and 5% can be observed in the system of FeVO4 or HKUST-1, respectively. In addition, the composition ratio of the composite was also optimized. When the molar ratio of FeVO4 to HKUST-1 is 1∶1, the as-prepared FeVO4/HKUST-1 composite has the best photocatalytic performance. Furthermore, the stability was investigated. After 5 cycles, the degradation efficiency to RhB is still above 90%, indicating good stability of the FeVO4/HKUST-1 composite. |
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