| 引用本文: | 郭芳颖,王群,贾伟科,苏骑,王际平.Ti-MOFs基复合材料的制备及其光电催化性能研究[J].材料科学与工艺,2022,30(3):18-27.DOI:10.11951/j.issn.1005-0299.20210293. |
| GUO Fangying,WANG Qun,JIA Weike,SU Qi,WANG Jiping.Preparation and photoelectrocatalytic performance of Ti-MOFs based composites[J].Materials Science and Technology,2022,30(3):18-27.DOI:10.11951/j.issn.1005-0299.20210293. |
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| Ti-MOFs基复合材料的制备及其光电催化性能研究 |
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郭芳颖1,2,王群1,2,贾伟科1,2,苏骑1,2,王际平1,2
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(1.上海工程技术大学 纺织服装学院,上海 201620; 2. 上海纺织化学清洁生产工程技术研究中心,上海 201620)
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| 摘要: |
| 以钛酸异丙酯为节点,2-氨基对苯二甲酸为连接体,构建具有多孔结构的钛基金属有机骨架(Ti-MOFs),即NH2-MIL-125(Ti),通过原位沉积法将花状多级结构的二硫化钼(MoS2)负载至Ti-MOFs表面,制备了具有多活性位点的光电催化剂MoS2/Ti-MOFs,并考察了MoS2负载量对Ti-MOFs光电催化性能的影响。扫描电子显微镜、红外光谱仪、X射线光子能谱等用于表征材料的形貌、结构及组成,电化学工作站用于研究材料的光电化学性能。此外,使用MoS2/Ti-MOFs作为光电催化剂对模拟有机污染物2,4,6-三氯苯酚(2,4,6-TCP)进行降解,通过测试模拟污染物的降解效率,评估了合成的催化剂的光电催化活性。研究结果表明,MoS2可有效负载于Ti-MOFs表面,且MoS2负载量为20wt.%时,合成的催化剂(MoS2/Ti-MOFs-80)的光电催化性能最优。MoS2/Ti-MOFs-80在可见光照射下的光电流密度达到了0.290 mA/cm2。在可见光下照射6 h后,MoS2/Ti-MOFs-80对2,4,6-TCP的去除效率达到了82.59%,且模拟污染物循环降解实验证实了MoS2/Ti-MOFs-80具有良好的光电催化稳定性。 |
| 关键词: 金属有机骨架 二硫化钼 光电化学 光电催化 有机污染物降解 |
| DOI：10.11951/j.issn.1005-0299.20210293 |
| 分类号:TB22；TB34；X705 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(22072089)；“十三五”重点研发项目(2017YFB0309600)；新疆生产建设兵团重大科技项目(2019AAA001)；上海工程技术大学研究生科研创新项目(20KY0908). |
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| Preparation and photoelectrocatalytic performance of Ti-MOFs based composites |
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GUO Fangying1,2, WANG Qun1,2, JIA Weike1,2, SU Qi1,2, WANG Jiping1,2
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(1. School of Textiles and Fashion, Shanghai University of Engineering Science,Shanghai 201620, China; 2. Shanghai Engineering Research Center for Clean Production of Textile Chemistry, Shanghai 201620, China)
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| Abstract: |
| Ti-MOFs (NH2-MIL-125(Ti)) with porous structure were synthesized by using isopropyl titanate as metal node and 2-amino-terephthalic acid as linker. MoS2/Ti-MOFs with multiple active sites were constructed via in-situ loading flower-like multistage MoS2 onto Ti-MOFs surface, and the influence of MoS2 amount on the photoelectrocatalytic performance of Ti-MOFs was investigated. The morphology, chemical structure, and composition of the catalyst were investigated by SEM, TEM, FTIR, and XPS, and electrochemical workstation was used to study the photoelectrochemical performance of the material. The catalytic capability of the synthesized MoS2/Ti-MOFs was evaluated by measuring the photoelectrocatalytic degradation efficiency of 2, 4, 6-trichlorophenol (2, 4, 6-TCP) which was used as simulated organic pollutants. Results show that MoS2 could be effectively anchored on Ti-MOFs surface, and Ti-MOFs loaded with 20% MoS2 (MoS2/Ti-MOFs-80) presented the best photoelectrocatalytic performance.The photocurrent density of MoS2/Ti-MOFs-80 reached 0.290 mA/cm2 under visible light irradiation. When MoS2/Ti-MOFs-80 was used as catalyst, the removal rate of 2, 4, 6-TCP reached 82.59% after light irradiation for 6 h. Besides, it was confirmed that MoS2/Ti-MOFs-80 exhibited satisfactory photoelectrocatalytic stability through the cyclic degradation tests of simulated pollutants. |
| Key words: metal organic frameworks MoS2 photoelectrochemical photoelectrocatalytic organic pollutants degradation |
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