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Synthesis of Core‐Shell Au@TiO 2 @C Nanoparticles and Their Photocatalytic Properties for the Degradation of Rhodamine B Under Simulated‐Solar Light
Author(s) -
Wang Xueqin,
Li Dongying,
Wang Shipeng,
Azad Fahad,
Su Shichen
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202002713
Subject(s) - photocatalysis , rhodamine b , materials science , nanoparticle , degradation (telecommunications) , photochemistry , chemical engineering , visible spectrum , absorption (acoustics) , rhodamine , irradiation , electron transfer , nanotechnology , catalysis , optoelectronics , chemistry , composite material , fluorescence , optics , organic chemistry , telecommunications , physics , computer science , nuclear physics , engineering
A simple method to synthesize Au@TiO 2 @C core‐shell sandwich nanoparticles by hydrolysis and depositing carbon quantum dots (CQDs) is reported. The photocatalytic activity of the synthesized material was tested via degrading Rhodamine B (RhB) under simulated‐solar light irradiation. The degradation rate was found in the following order: Au@TiO 2 @C > P25 > Au@TiO 2 > TiO 2 . The superior photocatalytic of Au@TiO 2 @C was attributed to synergistic effect of Au and CQDs. The CQDs layer coated outside benefits in improving absorption efficiency of solar light host and separation of electron‐holes pairs. The Au core can accelerate transfer process of photo excitons which can facilitate photocatalytic reaction.