Z-scheme 2D-m-BiVO4 networks decorated by a g-CN nanosheet heterostructured photocatalyst with an excellent response to visible light

doi:10.1039/c9ra09473c

	Z-scheme 2D-m-BiVO4 networks decorated by a g-CN nanosheet heterostructured photocatalyst with an excellent response to visible light
	Ahmed, Toheed 1,4,5; Ammar, Muhammad 3,5; Saleem, Aimen 2; Zhang, Hong-ling 1; Xu, Hong-bin 1
刊名	RSC ADVANCES
	2020-01-20
卷号	10 期号:6 页码:3192-3202
DOI	10.1039/c9ra09473c
英文摘要	For economical water splitting and degradation of toxic organic dyes, the development of inexpensive, efficient, and stable photocatalysts capable of harvesting visible light is essential. In this study, we designed a model system by grafting graphitic carbon nitride (g-C3N4) (g-CN) nanosheets on the surface of 2D monoclinic bismuth vanadate (m-BiVO4) nanoplates by a simple hydrothermal method. This as-synthesized photocatalyst has well-dispersed g-CN nanosheets on the surface of the nanoplates of m-BiVO4, thus forming a heterojunction with a high specific surface area. The degradation rate for bromophenol blue (BPB) shown by BiVO4/g-CN is 96% and that for methylene blue (MB) is 98% within 1 h and 25 min, respectively. The 2D BiVO4/g-CN heterostructure system also shows outstanding durability and retains up to similar to 95% degradation efficiency for the MB dye even after eight consecutive cycles; the degradation efficiency for BPB does not change too much after eight consecutive cycles as well. The enhanced photocatalytic activities of BiVO4/g-CN are attributed to the larger surface area, larger number of surface active sites, fast charge transfer and improved separation of photogenerated charge carriers. We proposed a mechanism for the improved photocatalytic performance of the Z-scheme photocatalytic system. The present work gives a good example for the development of a novel Z-scheme heterojunction with good stability and high photocatalytic activity for toxic organic dye degradation and water splitting applications.
资助项目	China National Major Science and Technology Program for Water Pollution Control and Treatment[2017ZX07402003] ; UCAS Scholarship for International Students
WOS关键词	GRAPHITIC CARBON NITRIDE ; CHARGE-TRANSFER ; CO2 REDUCTION ; FABRICATION ; COMPOSITE ; G-C3N4 ; HETEROJUNCTIONS ; NANOCOMPOSITES ; REMOVAL ; SURFACE
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000508849900018
资助机构	China National Major Science and Technology Program for Water Pollution Control and Treatment ; UCAS Scholarship for International Students
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/38697]
专题	中国科学院过程工程研究所
通讯作者	Ahmed, Toheed; Ammar, Muhammad
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Ohio State Univ, QARDC, Dept Anim Sci, Biotechnol & Fermentat Grp, Wooster, OH 44691 USA 3.Govt Coll Univ, Dept Chem Engn Technol, Faisalabad 38000, Pakistan 4.Govt Coll Univ, Dept Appl Chem, Faisalabad 38000, Pakistan 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ahmed, Toheed,Ammar, Muhammad,Saleem, Aimen,et al. Z-scheme 2D-m-BiVO4 networks decorated by a g-CN nanosheet heterostructured photocatalyst with an excellent response to visible light[J]. RSC ADVANCES,2020,10(6):3192-3202.
APA	Ahmed, Toheed,Ammar, Muhammad,Saleem, Aimen,Zhang, Hong-ling,&Xu, Hong-bin.(2020).Z-scheme 2D-m-BiVO4 networks decorated by a g-CN nanosheet heterostructured photocatalyst with an excellent response to visible light.RSC ADVANCES,10(6),3192-3202.
MLA	Ahmed, Toheed,et al."Z-scheme 2D-m-BiVO4 networks decorated by a g-CN nanosheet heterostructured photocatalyst with an excellent response to visible light".RSC ADVANCES 10.6(2020):3192-3202.