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马建锋教授课题组在“Applied Clay Science ”上发表研究论文

   发布时间: 2019-06-04    访问次数: 13

Bisulfite assisted photocatalytic degradation of methylene blue by Ni-Fe-Mn oxide from 


MnO4 intercalated LDH 

Ruyan Dou, Jianfeng Ma, Daiqin Huang, Changhai Fan, Wenchang Zhao, Mingguo Peng, Sridhar Komarneni

Abstract:A novel composite of Ni-Fe-Mn ternary metal oxide (Mn-LDO) was synthesized by MnO4− intercalation into NiFe-LDH and calcination to improve photocatalytic efficiency. The conventional Ni-Fe binary metal oxide (CLDO) prepared from Ni-Fe-LDH was also employed for comparison. Bisulfite was added to the above oxides in order to improve the photocatalytic degradation during the reaction. The as-synthesized samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray fluorescence (XRF), Brunauer, Emmett, and Teller (BET), UV–Vis diffuse reflectance spectroscopy and X-ray photoelectron spectra (XPS). Photocatalytic activities of these catalysts were evaluated for methylene blue (MB) degradation under the visible light with and without the assistance of NaHSO3. The results indicated that Mn-LDO showed superior photocatalytic decomposition capability of MB than that of C-LDO. Moreover, Mn-LDO showed much higher photocatalytic degradation efficiencyofMBinthepresenceofNaHSO3 thanonlythesingleMn-LDOdegradation system. The stability and recyclability of the catalyst were also investigated.