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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, Xiaolong1; Qian, Fangfang1; Wang, Yan2; Li, Mengli3; Lu, Jinren1; Li, Yiming1; Bao, Mutai1
2017
发表期刊Applied Catalysis B: Environmental
ISSN09263373
卷号200页码:283-296
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.
DOI10.1016/j.apcatb.2016.07.024
EI入藏号20163102651876
EI主题词Photocatalysts
EI分类号452.3 Industrial Wastes - 461.8 Biotechnology - 741.1 Light/Optics - 761 Nanotechnology - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds
引用统计
文献类型期刊论文
条目标识符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.
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