新型炭材料2020，Vol.35Issue(5)：609-618,10.DOI:10.1016/S1872-5805(20)60513-3
铋基金属有机骨架合成多孔炭负载Bi2O3/Bi三元可见光催化剂用于高效去除水中有机污染物
Preparation of visible-light photocatalysts of Bi2O3/Bi embedded in porous carbon from Bi-based metal organic frameworks for highly efficient Rhodamine B removal from water
摘要
Abstract
A series of ternary composite photocatalysts of Bi2O3/Bi embedded in porous carbon (Bi2O3/Bi/PC) was prepared by the high-temperature pyrolysis of a bismuth-based metal organic framework (CAU-17 (Bi)).They were used as photocatalysts for the degradation of organic Rhodamine B dye (RhB) in water under visible light.Results showed that the Bi2O3/Bi/PC composites with different Bi2o3/Bi ratios could be obtained through changing the extent of the carbothermal reduction of Bi2O3 during pyrolysis.The photocatalyst pyrolyzed at 800 ℃ showed the highest photocatalytic performance and had a wide applicable pH value range and excellent recyclability and stability.The components in the ternary composites exhibited a synergetic effect in the remova 1 of RhB,where Bi2O3 acted as a low-band gap semiconductor,metallic Bi transferred electrons generated by visible light excitation to the graphitic structure in porous carbon to inhibit the recombination of electrons with holes.The holes and peroxide radicals were the main active species.This study provides a new way for the design and preparation of visible-light active and high-performance photocatalysts for organic contaminant degradation in aqueous media by using metal organic frameworks as a multicomponent precursor.关键词
可见光光催化/多孔炭/铋基金属有机骨架/三元复合材料/有机污染物降解Key words
Visible-light photocatalysis/Porous carbon/Bismuth based metal organic frameworks/Ternary composite/Organic contaminant degradation分类
化学化工引用本文复制引用
宋驰,王林洁,孙思邈,吴颖,徐立杰,甘露..铋基金属有机骨架合成多孔炭负载Bi2O3/Bi三元可见光催化剂用于高效去除水中有机污染物[J].新型炭材料,2020,35(5):609-618,10.基金项目
国家自然科学基金(51708297) （51708297）
中国博士后基金(2019M661856) （2019M661856）
江苏省青蓝工程(2020).Natural Science Foundation of China (51708297),China Postdoctoral Science Foundation (2019M661856),Qing Lan Project of Jiangsu (2020). （2020）
