Advanced Powder Technology, Vol.29, No.10, 2491-2500, 2018
Highly efficient degradation of 2-chlorophenol and methylene blue with Rb0.27WO3/NiFe-CLDH composites under visible light irradiation
Novel magnetically composites photocatalyst Rb0.27WO3/NiFe-CLDH (RWCLDH) was fabricated via a simple method. The as-prepared catalysts were characterized using XRD, XPS, SEM, TEM, HRTEM, BET, UV-Vis DRS spectra and PL analysis. The RWCLDH-700 composites exhibit a two-fold enhancement in photocatalytic activity toward degradation of 2-chlorophenol (2-CP) and methylene blue (MB) under visible light irradiation compared to that of Rb0.27WO3 and NiFe-CLDH. The photocatalytic efficiency of the Rb0.27WO3 and NiFe-CLDH is 39%, 45% and 42%, 34%, respectively, whereas for RWCLDH-700 composites are 91% and 93%. This enhancement in photocatalytic activity is attributed to the effective separation of electron-hole pairs. Moreover, the catalyst exhibited higher photocatalytic stability and retained its degradation efficiency up to 81% after four cycles. Finally, a possible decomposition mechanism was also discussed. (C) 2018 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.