Sunlight photocatalytic degradation of ofloxacin using UiO-66/wood composite photocatalysts  

作　　者：Linhong Shi Xue Zou Tengfei Wang Dongmei Wang Meikun Fan Zhengjun Gong 

机构地区：[1]Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China [2]State-province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety,Chengdu 611756,China

出　　处：《Chinese Chemical Letters》2022年第1期442-446,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21777131 and 21677117);Science and Technology Department Foundation of Sichuan Province(Nos.2018GZ0400 and 2018SZDZX0026);the Fundamental Research Funds for the Central Universities(No.A0920502052001–6)。

摘　　要：This study synthesized UiO-66(Zr)in situ on wood via a one-step solvothermal method.UiO-66/wood was successfully prepared and its catalytic performance for the ofloxacin(OFX)photodegradation under simulate sunlight was also explored.UiO-66/wood exhibited a better catalytic performance,and its degradation rate constant was about 1.2 and 1.5 times than that of UiO-66 and wood,respectively.The effects of solution initial concentration,pH of the system and dosage of the photocatalyst were explored.Additionally,the active species trapping experiments and UV-vis diffused reflectance spectra measurements were conducted to investigated the photocatalytic mechanism of the UiO-66/wood composite,superoxide radical(O_(2)^(·-))and hydroxyl radical(^(·)OH)were the main reactive species.In addition,the possible degradation pathways of OFX were analyzed by LC-MS.Meanwhile,the UiO-66/wood showed outstanding stability and reusability after 4 cycles experiments.The removal performance of UiO-66/wood towards real samples showed it has potential in actual application.

关 键 词：Photocatalytic degradation Metal-organic frameworks OFLOXACIN Antibiotic Water pollution 

分 类 号：X703[环境科学与工程—环境工程] O643.36[理学—物理化学] O644.1[理学—化学]