Premium
Structure regulation and photocatalytic activity enhancement of Bi 2 WO 6 by “double‐effect modification” mode
Author(s) -
Gao Yanhua,
Shan Xinyao,
Yang Wei,
Chen Ying
Publication year - 2019
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4766
Subject(s) - photocatalysis , materials science , polyvinylpyrrolidone , surface modification , density functional theory , adsorption , chemical engineering , nanotechnology , surface charge , ion , catalysis , chemistry , polymer chemistry , computational chemistry , organic chemistry , engineering
Summary In this paper, the Cl‐doped hollow microspherical Bi 2 WO 6 nano‐photocatalyst was self‐assembly synthesized creatively by one‐step solvothermal method using the surface charge regulation strategy for electrostatic adsorption effect of anion in KCl and cation in polyvinylpyrrolidone (PVP). The crystal structure, morphology, element distribution, chemical state, and optical characteristic were, respectively, characterized. The reasons for improving the photocatalytic activity were investigated by degrading tetracycline hydrochloride (TCH). Combined with characterization analysis and the density functional theory (DFT theory), the “double‐effect modification” mode under the surface charge control strategy can not only successfully dope the Cl ‐ to achieve functionalization of the product, but also achieve effective control of the product morphology through electrostatic self‐assembly process. The electron hole pair recombination was further inhibited, and the photocatalytic activity was improved. The proposed mode provides a simpler, more efficient and widely applicable method for the modification of Bi 2 WO 6 to enhance its photocatalytic activity.