Photocatalytic removal of hexavalent chromium by Fe doped g-C(3)N4 loaded with dispersed diatomite modified by electron beam bombardment

doi:10.1016/j.jclepro.2021.128219

	Photocatalytic removal of hexavalent chromium by Fe doped g-C(3)N4 loaded with dispersed diatomite modified by electron beam bombardment
	Zhang, Jing 1,2,4; Zhang, Xuewei 2,4; Zhou, Tianqing 2,4; Huang, Yixuan 2,4; Zhao, Libing 2,4; Ren, Zhuo 2,4; Liu, Xiaoli 2,4; Chen, Liang 2,4; Shao, Yuyang 2,4; Ma, Xijun 2,4
刊名	JOURNAL OF CLEANER PRODUCTION
	2021-09-15
卷号	315
关键词	Diatomite Fe doped graphitic carbon nitride Dispersed Hexavalent chromium
ISSN号	0959-6526
DOI	10.1016/j.jclepro.2021.128219
通讯作者	Xie, Xingyong(xyxie@hyit.edu.cn) ; Wu, Zhengyan(zywu@ipp.ac.cn)
英文摘要	In this study, the diatomite (DE) was firstly dispersed by the electron beam bombardment (EB) to form the modified diatomite (MDE), using as the carrier of the Fe doped carbon nitride (FGCN). The MDE/FGCN demonstrates broader light adsorption in the visible region and low recombination of photogenerated electron-hole, according to the results of spectroscopy techniques. Reduction of hexavalent chromium (Cr(VI)) in the aqueous solution was used to illustrate the photocatalytic ability of MDE/FGCN. Results showed that the MDE/FGCN-1:3 (Fe, 10%) composites with EB dose of 30 kGy exhibited stronger reduction efficiency with 98.3% of Cr(VI) in 100 min, which was almost 16.92 times higher than that of pure GCN for the reaction rate. Additionally, lower pH values could promote the Cr(VI) reduction, and the MDE/FGCN displayed great stability after four runs. Lastly, the electron and heat effects of EB were creatively used to analyze the dispersion mechanism of MDE. The higher photocatalytic ability of MDE/FGCN could be attributed not only the dispersion of MDE but also the charge trapping by Fe. This study will broaden the application of physical irradiation in the modification of carriers for the photocatalyst, which can be applied in the treatment of environmental pollutants.
资助项目	Natural Science Fundation for Colleges and Universities in Jiangsu Province of China[18KJB610003] ; China Postdoctoral Science Foundation[2019M652225]
WOS关键词	VISIBLE-LIGHT ; G-C3N4 NANOSHEETS ; REDUCTION ; HYBRID ; CR(VI) ; DEGRADATION ; IRRADIATION ; PERFORMANCE ; ALPHA-FE2O3
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000716748600002
资助机构	Natural Science Fundation for Colleges and Universities in Jiangsu Province of China ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/126534]
专题	中国科学院合肥物质科学研究院
通讯作者	Xie, Xingyong; Wu, Zhengyan
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab High Magnet Field & Ion Beam Phys Biol, Hefei 230031, Peoples R China 2.Huaiyin Inst Technol, Natl & Local Joint Engn Res Ctr Mineral Salt Deep, Huaian 223003, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab Environm Toxicol & Pollut Control Technol, Hefei 230031, Peoples R China 4.Huaiyin Inst Technol, Key Lab Palygorskite Sci & Appl Technol Jiangsu P, Huaian 223003, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jing,Zhang, Xuewei,Zhou, Tianqing,et al. Photocatalytic removal of hexavalent chromium by Fe doped g-C(3)N4 loaded with dispersed diatomite modified by electron beam bombardment[J]. JOURNAL OF CLEANER PRODUCTION,2021,315.
APA	Zhang, Jing.,Zhang, Xuewei.,Zhou, Tianqing.,Huang, Yixuan.,Zhao, Libing.,...&Wu, Zhengyan.(2021).Photocatalytic removal of hexavalent chromium by Fe doped g-C(3)N4 loaded with dispersed diatomite modified by electron beam bombardment.JOURNAL OF CLEANER PRODUCTION,315.
MLA	Zhang, Jing,et al."Photocatalytic removal of hexavalent chromium by Fe doped g-C(3)N4 loaded with dispersed diatomite modified by electron beam bombardment".JOURNAL OF CLEANER PRODUCTION 315(2021).