Constructing a novel ternary composite (C16H33(CH3)3N)4W10O32/g-C3N4/rGO with enhanced visible-light-driven photocatalytic activity for degradation of dyes and phenol

doi:10.1016/j.apcatb.2016.07.024

	Constructing a novel ternary composite (C16H33(CH3)3N)4W10O32/g-C3N4/rGO with enhanced visible-light-driven photocatalytic activity for degradation of dyes and phenol
	Yang, Xiaolong 1; Qian, Fangfang 1; Wang, Yan 2; Li, Mengli 3; Lu, Jinren 1; Li, Yiming 1; Bao, Mutai 1
刊名	Applied Catalysis B: Environmental
	2017
卷号	200 页码:283-296
ISSN号	09263373
DOI	10.1016/j.apcatb.2016.07.024
英文摘要	The photocatalytic performance of the g-C3N4photocatalyst was restricted by the low efficiency because of the fast charge recombination. The present work constructed a “killing two birds with one stone” composite (C16H33(CH3)3N)4W10O32/g-C3N4heterostructured photocatalysts with the aim to greatly promote the charge separation and recycle decatungstate in aqueous solution. Decatungstate was immobilized on g-C3N4in the form of modified decatungstate (C16H33(CH3)3N)4W10O32via surface bonding method for the first time. Furthermore, a novel ternary (C16H33(CH3)3N)4W10O32/g-C3N4/rGO photocatalyst was successfully constructed by integrating graphene into the binary (C16H33(CH3)3N)4W10O32/g-C3N4composite as the electron mediator. The photocatalysts were characterized by XRD, FTIR, FESEM, TEM, UV-vis DRS, PL and EIS measurement. The photocatalytic properties were evaluated in photodecomposition of aqueous methyl orange and phenol under visible-light irradiations. It has been shown that the obtained (C16H33(CH3)3N)4W10O32/g-C3N4photocatalyst exhibited improved photocatalytic activity and enhanced reduced charge recombination as compared with those of g-C3N4and (C16H33(CH3)3N)4W10O32. It has been found that the introduction of graphene revealed a synergistic effect between the (C16H33(CH3)3N)4W10O32species, g-C3N4and graphene existed in the ternary photocatalyst. Consequently, the photocatalytic activity of the ternary (C16H33(CH3)3N)4W10O32/g-C3N4/rGO photocatalyst was superior to that of the binary one, originating from its stronger visible-light absorption and more reduced charge combination. Finally, recycling experiments revealed that the ternary composite photocatalyst was not only highly efficient but also robust, because it can be used six times without loss of activity, which efficiently solved the problem of recycling decatungstate in reaction system. This work demonstrated that rational design and construction of g-C3N4-decatungstate composites could open up a new avenue for the development of new efficient visible-light photocatalysts for water disinfection. © 2016 Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25721]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 238 Song-Ling Road, Qingdao; 266100, China; 2.Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, 18 Tian-Shui Road, Lanzhou; 730000, China; 3.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-Xi Road, Shanghai; 200050, China
推荐引用方式 GB/T 7714	Yang, Xiaolong,Qian, Fangfang,Wang, Yan,et al. Constructing a novel ternary composite (C16H33(CH3)3N)4W10O32/g-C3N4/rGO with enhanced visible-light-driven photocatalytic activity for degradation of dyes and phenol[J]. Applied Catalysis B: Environmental,2017,200:283-296.
APA	Yang, Xiaolong.,Qian, Fangfang.,Wang, Yan.,Li, Mengli.,Lu, Jinren.,...&Bao, Mutai.(2017).Constructing a novel ternary composite (C16H33(CH3)3N)4W10O32/g-C3N4/rGO with enhanced visible-light-driven photocatalytic activity for degradation of dyes and phenol.Applied Catalysis B: Environmental,200,283-296.
MLA	Yang, Xiaolong,et al."Constructing a novel ternary composite (C16H33(CH3)3N)4W10O32/g-C3N4/rGO with enhanced visible-light-driven photocatalytic activity for degradation of dyes and phenol".Applied Catalysis B: Environmental 200(2017):283-296.