吸附
光催化
生物炭
降级(电信)
动力学
X射线光电子能谱
化学工程
朗缪尔吸附模型
化学
核化学
复合数
材料科学
催化作用
复合材料
有机化学
热解
物理
工程类
电信
量子力学
计算机科学
作者
Wandi Song,Jiang-hua Zhao,Xiaolin Xie,Wang Liu,Shuxia Liu,Haibo Chang,Chengyu Wang
出处
期刊:RSC Advances
[The Royal Society of Chemistry]
日期:2021-01-01
卷期号:11 (25): 15369-15379
被引量:20
摘要
C/BiOBr composite materials were synthesized via a simple one-step solvothermal method, with C derived from biochar, which was prepared from the low-cost straw. The samples were characterized by SEM, XRD, XPS and PL. The 2% C/BiOBr composite material showed a noticeable adsorption and photocatalysis synergistic effect to remove CIP. The adsorption rate and degradation rate were 1.45 times and 1.8 times that of BiOBr. The adsorption kinetics and isotherms of CIP on C/BiOBr were analyzed with the pseudo-second-order kinetic and Langmuir models. The degradation efficiency was 96.8% after 60 min of irradiation. High stability and degradability were still maintained after four cycles. The Bi-O-C bond accelerated electron transition and inhibited the rapid photogenerated electron pair recombination. In the degradation process of CIP, ˙O2- and h+ played a significant role. Experiments proved that C/BiOBr is practical and feasible for the degradation of CIP under the synergistic effect of adsorption and photocatalysis.
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