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| Construction of Bi2WO6 Quantum Dots (QDs) Decorated Bi2MoO6-xF2x Heterostructures with Enhanced Photocatalytic Activity |
| Author Name | Affiliation | E-mail | | WANG Dan-Jun | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Shaanxi, Yan'an 716000, China | wangdj761118@163.com | | SHEN Hui-Dong | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Shaanxi, Yan'an 716000, China | | | FU Meng-Xi | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Shaanxi, Yan'an 716000, China
School of materials science and chemical engineering, Xi'an Technological University, Xi'an 710021, China | | | WANG Chan | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Shaanxi, Yan'an 716000, China | | | GUO Li | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Shaanxi, Yan'an 716000, China | | | YANG Xiao | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Shaanxi, Yan'an 716000, China | | | FU Feng | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Shaanxi, Yan'an 716000, China | |
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| Abstract: Bi2WO6@Bi2MoO6-xF2x heterostructures have been successfully synthesized via a facile precipitation-deposition process. XRD, XPS, FE-SEM, HR-TEM, EDS, UV-Vis-DRS, PC and EIS techniques were employed to analyze the phase composition, morphology, light absorption and photoelectrochemical properties of as-synthesized samples. Photocatalytic degradation of model pollutant RhB was selected as a probe reaction to investigate the photocatalytic activities enhanced mechanism of Bi2WO6@Bi2MoO6-xF2x heterostructures. The morphology analysis indicated that the as-synthesized Bi2MoO6 microsphere is composed of massive nanoplate with the thickness of 20~50 nm, and monodispersed Bi2WO6 quantum dots (QDs) with an average size of 10 nm was deposited on the surface of Bi2MoO6 microsphere. Comparison to pure Bi2MoO6 and Bi2WO6, 1:1Bi2WO6@Bi2MoO6-xF2x heterostructures exhibits the best photocatalytic activity and photoelectrochemical property. The transient photocurrent responses and EIS spectra analysis results indicate that Bi2WO6 QDs deposition can improve the separation sufficiency and migration rate of photogeneraged electrons/holes. The radical scavengers test further confirm that·O2- and h+ are the main reactive species during the photocatalytic process. On the basis of experimental results, the mechanism of the enhanced photocatalytic activity for Bi2WO6@Bi2MoO6-xF2x heterostructure via synergistic effect of F- doping and Bi2WO6 QDs deposition co-modification was also discussed. |
| Keywords: precipitation-deposition process quantum dots (QDs) decoration Bi2WO6/Bi2MoO6-xF2x heterostructure synergistic effect photocatalysis synergistic effect |
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| WANG Dan-Jun,SHEN Hui-Dong,FU Meng-Xi,WANG Chan,GUO Li,YANG Xiao,FU Feng.Construction of Bi2WO6 Quantum Dots (QDs) Decorated Bi2MoO6-xF2x Heterostructures with Enhanced Photocatalytic Activity[J].Chinese Journal of Inorganic Chemistry,2018,34(1):73-82. |
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