Fabrication of Z-scheme photocatalyst Ag–AgBr@Bi20TiO32 and its visible-light photocatalytic activity for the degradation of isoproturon herbicide
作者： Ruyi Xie , Linping Zhang , Hong Xu , Yi Zhong , Xiaofeng Sui
DOI: 10.1016/J.MOLCATA.2015.05.028
关键词:
摘要: A novel hierarchical Z-scheme photocatalyst Ag–AgBr@Bi20TiO32 was synthesized by in situ deposition of AgBr onto the surface mesoporous metastable Bi20TiO32 template and followed photoreduction to Ag–AgBr. The as-synthesized characterized X-ray diffraction spectra (XRD), photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission (TEM), N2 adsorption–desorption analysis UV–vis diffuse reflectance (UV–vis DRS). photocatalytic activity evaluated degradation isoproturon herbicide under visible-light irradiation. Results showed that exhibited much better than Ag–AgBr, or Bi20TiO32, physical mixture due its efficient utilization construction keeping photo-generated electrons holes with high reduction oxidation capability. possible catalytic mechanism for put forward based on band gap structure free radical hole scavenging experiments. pathway also proposed according intermediates identified reaction system.
sci-hub.se 参考文章(41)
Bradley Allured, Steven DelaCruz, Timothy Darling, Muhammad N. Huda, Vaidyanathan (Ravi) Subramanian, Enhancing the visible light absorbance of Bi2Ti2O7 through Fe-substitution and its effects on photocatalytic hydrogen evolution Applied Catalysis B-environmental. ,vol. 144, pp. 261- 268 ,(2014) , 10.1016/J.APCATB.2013.07.019
Zhiqiao He, Lei Xie, Jinjun Tu, Shuang Song, Weiping Liu, Zhiwu Liu, Jiaqi Fan, Qi Liu, Jianmeng Chen, Visible Light-Induced Degradation of Phenol over Iodine-Doped Titanium Dioxide Modified with Platinum: Role of Platinum and the Reaction Mechanism Journal of Physical Chemistry C. ,vol. 114, pp. 526- 532 ,(2010) , 10.1021/JP908946C
Lutz Nitschke∗, Walter Schüssler, Surface water pollution by herbicides from effluents of waste water treatment plants. Chemosphere. ,vol. 36, pp. 35- 41 ,(1998) , 10.1016/S0045-6535(97)00286-5
Lei Shi, Lin Liang, Jun Ma, Yanan Meng, Shifa Zhong, Fangxiao Wang, Jianmin Sun, Highly efficient visible light-driven Ag/AgBr/ZnO composite photocatalyst for degrading Rhodamine B Ceramics International. ,vol. 40, pp. 3495- 3502 ,(2014) , 10.1016/J.CERAMINT.2013.09.080
Lisha Zhang, Kin-Hang Wong, Zhigang Chen, Jimmy C. Yu, Jincai Zhao, Chun Hu, Chiu-Yeung Chan, Po-Keung Wong, AgBr-Ag-Bi2WO6 nanojunction system: A novel and efficient photocatalyst with double visible-light active components Applied Catalysis A-general. ,vol. 363, pp. 221- 229 ,(2009) , 10.1016/J.APCATA.2009.05.028
Liuping Zheng, Guiyang Yan, Yingying Huang, Xuxu Wang, Jinlin Long, Ling Li, Tingya Xu, Visible-light photocatalytic denitrogenation of nitrogen-containing compound in petroleum by metastable Bi20TiO32 International Journal of Hydrogen Energy. ,vol. 39, pp. 13401- 13407 ,(2014) , 10.1016/J.IJHYDENE.2014.04.027
M. A. Butler, D. S. Ginley, Prediction of Flatband Potentials at Semiconductor‐Electrolyte Interfaces from Atomic Electronegativities Journal of The Electrochemical Society. ,vol. 125, pp. 228- 232 ,(1978) , 10.1149/1.2131419
Cuiyun Zeng, Baozhu Tian, Jinlong Zhang, Silver halide/silver iodide@silver composite with excellent visible light photocatalytic activity for methyl orange degradation. joint international conference on information sciences. ,vol. 405, pp. 17- 21 ,(2013) , 10.1016/J.JCIS.2013.05.009
Tingjiang Yan, Hongwen Zhang, Qi Luo, Yanyan Ma, Huaxiang Lin, Jinmao You, Controllable synthesis of plasmonic Ag/AgBr photocatalysts by a facile one-pot solvothermal route Chemical Engineering Journal. ,vol. 232, pp. 564- 572 ,(2013) , 10.1016/J.CEJ.2013.08.021
Xiangqi Zhu, Jinlong Zhang, Feng Chen, Study on visible light photocatalytic activity and mechanism of spherical Bi12TiO20 nanoparticles prepared by low-power hydrothermal method Applied Catalysis B-environmental. ,vol. 102, pp. 316- 322 ,(2011) , 10.1016/J.APCATB.2010.12.019