光降解
材料科学
光催化
静电纺丝
化学工程
锐钛矿
纳米复合材料
罗丹明B
降级(电信)
废水
纳米纤维
染色
纳米技术
复合材料
化学
聚合物
催化作用
有机化学
废物管理
电信
计算机科学
工程类
作者
Liusha Cen,Tao Tang,Fan Yu,Han Wu,Chengcai Li,Hailin Zhu,Yuhai Guo
标识
DOI:10.1016/j.jiec.2023.06.042
摘要
Semiconductor−metal–organic framework (MOF) hybrid photocatalysts become a significant material to treating dyeing wastewater recently. Zinc-based metal–organic framework (ZIF-8) stands out among numerous photocatalysts for its stability and simplicity to prepare. In this work, the gourd-shaped ZIF-8/TiO2 nanocomposites are prepared in situ on anatase TiO2 by precursor method, and then ZIF-8/TiO2 nanocomposites is supported on PVDF electrospinning nanofibers by blending method to form ZIF-8/TiO2 nanofibers (ZIF-8/TiO2 NFs). We compare the degradation ability of Rhodamine B by ZIF-8/TiO2 NFs with different mass ratios and load rates. When the mass ratio of ZIF-8 to TiO2 is 2:1 and the loading rate is 10%, the photocatalytic degradation efficiency of ZIF-8/TiO2 NFs reached 95.4%, and the degradation remained as high as 88.7% after cycling five times. The characterization results showed that ZIF-8 and TiO2 are connected by N − Ti − O chemical bond, which narrows the band gap and rebars the recombination of the electron-hole pairs. The synergistic action of ZIF-8 and TiO2 largely improves the photocatalytic capacity of ZIF-8/TiO2 NFs.
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