Ligand-Induced Drastic Enhancement of Catalytic Activity of Nano-BiFeO3 for Oxidative Degradation of Bisphenol A
Ligand-Induced Drastic Enhancement of Catalytic Activity of Nano-BiFeO3 for Oxidative Degradation of Bisphenol A
复制标题
配体诱导显着增强纳米 BiFeO3 氧化降解双酚 A 的催化活性
DOI：
10.1021/cs2002862
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发表时间：
2011-08
期刊：
影响因子：
12.9
通讯作者：
Tang, Heqing
中科院分区：
文献类型：
--
作者：
Wang, Nan;Zhu, Lihua;Lei, Ming;She, Yuanbin;Cao, Meijuan;Tang, Heqing
以BiFeO3纳米颗粒为非均相催化剂，H2O2为绿色氧化剂，研究了螯合剂对双酚A （BPA）催化降解的影响。在中性pH下，由于纳米bifeo3的催化能力有限，H2O2在纳米bifeo3单独存在下对BPA的氧化能力不强。通过添加适当的有机配体对纳米bifeo3表面进行原位修饰后，在5 ~ 9的pH范围内，BPA的降解速度大大加快。配体的增强作用顺序为空白<酒石酸<甲酸<甘氨酸<硝基三乙酸<乙二胺四乙酸（EDTA）。在pH 5.0和30℃条件下，在H2O2-BiFeO3体系中添加0.25 mmol L-1 EDTA，反应时间为120 min， BPA去除率由20.4%提高到91.2%。该配体的增强效应与纳米bifeo3中铁的可能溶解无关，但与•OH格式的加速相关。
Effects of chelating agents on the catalytic degradation of bisphenol A (BPA) was studied in the presence of BiFeO3 nanoparticles as a heterogeneous catalyst and H2O2 as a green oxidant. The oxidizing ability of H2O2 in the presence of nano-BiFeO3 alone was not so strong to degrade BPA at neutral pH values, due to the limited catalytic ability of nano-BiFeO3. Once the surface of nano-BiFeO3 was in situ modified by adding proper organic ligands, the BPA degradation was much accelerated in the pH range of 5–9. The enhancing effect of the ligand was observed to have an order of blank < tartaric acid < formic acid < glycine < nitrilotriacetic acid < ethylenediaminetetraacetic acid (EDTA). The addition of 0.25 mmol L–1 EDTA in the H2O2–BiFeO3 system at pH 5.0 and 30 °C increased the BPA removal from 20.4% to 91.2% with reaction time of 120 min. The enhancing effect of the ligand was found to be indifferent of the possible dissolution of iron from nano-BiFeO3, but correlated well with the accelerated •OH format...
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影响因子：
8.6
作者：
Tao Zhou;T. Lim;Xiao-hua Lu;Yao-zhong Li;F. Wong
通讯作者：
Tao Zhou;T. Lim;Xiao-hua Lu;Yao-zhong Li;F. Wong
影响因子：
22.1
作者：
Shijian Yang;Hongping He;Daqing Wu;Dong Chen;Xiaoliang Liang;Zonghua Qin;Mingde Fan;Jianxi Zhu
通讯作者：
Shijian Yang;Hongping He;Daqing Wu;Dong Chen;Xiaoliang Liang;Zonghua Qin;Mingde Fan;Jianxi Zhu
影响因子：
--
作者：
Xiaofei Xue;K. Hanna;C. Despas;Feng Wu;N. Deng
通讯作者：
Xiaofei Xue;K. Hanna;C. Despas;Feng Wu;N. Deng
影响因子：
9.9
作者：
Li, F. B.;Li, X. Z.;Dong, J.
通讯作者：
Dong, J.
影响因子：
13.6
作者：
Costa, RCC;Lelis, MFF;Lago, RM
通讯作者：
Lago, RM