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Effcient Removal Phenol Red over Ternary Heterostructured Ag-Bi2MoO6/BiPO4 Composite Photocatalyst
Da-yu Jiang,Da Xu,Jia Zheng,Yang Yang,Chang Liu,Yu-shuang Wang,Guang-bo Che,Xue Lin,Li-min Chang
Author NameAffiliationE-mail
Da-yu Jiang Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Ministry of Edu-cation, Jilin Normal University, Changchun 130103, China  
Da Xu Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Ministry of Edu-cation, Jilin Normal University, Changchun 130103, China  
Jia Zheng Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Ministry of Edu-cation, Jilin Normal University, Changchun 130103, China  
Yang Yang Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Ministry of Edu-cation, Jilin Normal University, Changchun 130103, China  
Chang Liu Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Ministry of Edu-cation, Jilin Normal University, Changchun 130103, China  
Yu-shuang Wang Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Ministry of Edu-cation, Jilin Normal University, Changchun 130103, China  
Guang-bo Che Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Ministry of Edu-cation, Jilin Normal University, Changchun 130103, China  
Xue Lin Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Ministry of Edu-cation, Jilin Normal University, Changchun 130103, China jlsdlinxue@126.com 
Li-min Chang Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Ministry of Edu-cation, Jilin Normal University, Changchun 130103, China  
Abstract:
The fabrication of multicomponent composite systems may provide bene ts in terms of charge separation and the retardation of charge pair recombination. In this work, a ternary heterostructured Ag-Bi2MoO6/BiPO4 composite was fabricated through a low-temperature solution-phase route for the rst time. The XRD, SEM, EDX and XPS results indicated the prepared sample is a three-phase composite of BiPO4, Bi2MoO6, and Ag. Ag nanopar-ticles were photodeposited on the surface of Bi2MoO6/BiPO4 nanosheets, which not only increase visible-light absorption via the surface plasmon resonance, but also serve as good electron acceptor for facilitating quick photoexcited electron transfer. The interface between Bi2MoO6 and BiPO4 facilitates the migration of photoinduced electrons from Bi2MoO6 to BiPO4, which is also conductive to reduce the recombination of electron-holes. Thus, the ternary heterostructured Ag-Bi2MoO6/BiPO4 composite showed signi cant photocatalytic activity, higher than pure Bi2MoO6, BiPO4, and Bi2MoO6/BiPO4. Moreover, the possible photocatalytic mechanism of the Ag-Bi2MoO6/BiPO4 heterostructure related to the band positions of the semiconductors was also discussed. In addition, the quenching effects of di erent scavengers revealed that the reactive ·OH and O2·- play a major role in the phenol red decolorization.
Key words:  Heterostructure  Bi2MoO6  BiPO4  Ag  Photocatalysis  Visible light
FundProject:
三元异质结构Ag-Bi2MoO6/BiPO4光催化剂高效降解苯酚红
姜大雨,徐达,郑佳,杨阳,刘畅,王宇爽,车广波,林雪,常立民
摘要:
多组分复合体系有利于电荷的有效分离,减少电子空穴对的复合几率。通过低温液相法首次合成Ag-Bi2MoO6/BiPO4三元异质结构光催化剂。利用XRD、SEM、EDX及XPS等技术对样品进行了表征。结果表明,Ag纳米粒子光照积累在Bi2MoO6/BiPO4的表面,通过表面等离子共振增加对可见光的吸收,同时作为电子受体促进了光生电子的转移。Ag、BiPO4和Bi2MoO6形成三元异质结构有效地抑制了光生电子空穴对的复合。Ag-Bi2MoO6/BiPO4表现出优异的光催化性能,其光催化活性较BiPO4、Bi2MoO6和Bi2MoO6/BiPO4样品有较大提高。并且对Ag-Bi2MoO6/BiPO4三元异质结构的光催化机制进行了讨论。光催化过程中反应活性物种捕获实验结果表明h+和O2·-是主要的活性基团.
关键词:  异质结构  钼酸铋  磷酸铋    光催化  可见光
DOI:10.1063/1674-0068/29/cjcp1602034
分类号: