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A Visible Light‐Driven Zn/Cr–LaFeO 3 Nanocomposite with Enhanced Photocatalytic Activity towards H 2 Production and RhB Degradation
Author(s) -
Acharya Saumyaprava,
Parida Kulamani
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701589
Subject(s) - nanocomposite , rhodamine b , photocatalysis , hydroxide , visible spectrum , materials science , degradation (telecommunications) , photocurrent , absorption (acoustics) , photochemistry , nuclear chemistry , chemistry , inorganic chemistry , nanotechnology , catalysis , composite material , organic chemistry , optoelectronics , telecommunications , computer science
We have studied the effect of Zn−Cr layered double hydroxide (LDH) on LafeO 3 . LaFeO 3 (LFO) decorated Zn−Cr layered double hydroxide (LDHLFO) nanocomposites was successfully synthesized. As compare to the neat LFO and LDH, the LDHLFO shows enhanced absorption of visible light and improvement in electron‐hole separation efficiency. The X‐ray diffraction (XRD) peak of the LDH shifted slightly towards lower angle and merged with the LFO peak indicating increase in the basal plane spacing. Moreover, introduction of LDH to LaFeO 3 shows higher photocurrent value than that of neat LFO and LDH exhibiting higher photocatalytic activity towards organic pollutant degradation and water reduction reaction under visible light irradiation. The LDHLFO nanocomposite showed about 3.8 and 4.1 times higher H 2 evolution, 8.7 and 7.9 times higher Rhodamine B degradation than that of pure LaFeO 3 and LDH respectively. The possible mechanism for both water reduction and dye degradation reaction was prudently examined by electron scavenger test.