Open AccessSynthesis of AgI/WS 2 hybrids as a novel photocatalyst with efficient degradation of rhodamine B
Author(s) -
Wu XiangFeng,
Li Hui,
Zhang Ying,
Zhang JiaRui,
Su JunZhang,
Feng YanMei,
Zhang WeiGuang,
Sun LiSong,
Sun XiuGuo
Publication year - 2019
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2018.5189
Subject(s) - rhodamine b , degradation (telecommunications) , photocatalysis , materials science , visible spectrum , rhodamine , chemical engineering , absorption (acoustics) , photochemistry , nuclear chemistry , infrared , composite material , catalysis , chemistry , optoelectronics , organic chemistry , optics , fluorescence , computer science , telecommunications , physics , engineering
Full‐spectrum‐responsive AgI/WS 2 composites as an efficient photocatalyst have been synthesised by an in‐situ growth of AgI on the surfaces of WS 2 nanosheets. The photocatalytic activities of the samples were evaluated by degradation of rhodamine B dilute solution under visible light irradiation. Experimental results showed that the introduction of WS 2 nanosheets could enhance light absorption, photocatalytic activity, and recyclability of the pure AgI in the region of visible and infrared light. Moreover, the degradation efficiency of the as‐synthesised AgI/WS 2 composites exhibited the trend of first increased and then decreased with increasing the amount of WS 2 nanosheets. When the usage of WS 2 nanosheets was 7 wt%, the as‐prepared composites possessed the maximum of 91.2% in 30 min. Furthermore, after three cycles of degradation, it could still degrade 89.0% of rhodamine B, obviously higher than 11.4% of pure AgI. In addition, a possible degradation mechanism of the as‐synthesised AgI/WS 2 hybrids was provided.