Construction of Z-Scheme g-C3N4/CNT/Bi2Fe4O9 composites with improved simulated-sunlight photocatalytic activity for the dye degradation

doi:10.3390/mi9120613

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Construction of Z-Scheme g-C3N4/CNT/Bi2Fe4O9 composites with improved simulated-sunlight photocatalytic activity for the dye degradation
	Di, Lijing 1,2; Yang, Hua 1; Xian, Tao 2; Chen, Xiujuan 1
刊名	Micromachines
	2018-11-22
卷号	9 期号:12
关键词	Carbon nanotubes Charge transfer Complexation Heterojunctions Photocatalysis Bi2Fe4O9 Charge transfer process G-C3N4 Hydrothermal methods Photocatalytic performance Photoelectrochemical measurements Photogenerated charge Ternary composites
ISSN号	2072-666X
DOI	10.3390/mi9120613
英文摘要	In this work, ternary all-solid-state Z-scheme g-C3N4/carbon nanotubes/Bi2Fe4O9 (g-C3N4/CNT/BFO) composites with enhanced photocatalytic activity were prepared by a hydrothermal method. The morphology observation shows that ternary heterojunctions are formed in the g-C3N4/CNT/BFO composites. The photocatalytic activity of the samples for the degradation of acid orange 7 was investigated under simulated sunlight irradiation. It was found that the ternary composites exhibit remarkable enhanced photocatalytic activity when compared with bare BFO and g-C3N4/BFO composites. The effect of the CNT content on the photocatalytic performance of the ternary composites was investigated. The photocatalytic mechanism of g-C3N4/CNT/BFO was proposed according to the photoelectrochemical measurement, photoluminescence, active species trapping experiment and energy-band potential analysis. The results reveal that the introduction of CNT as an excellent solid electron mediator into the ternary composites can effectively accelerate the electron migration between BFO and g-C3N4. This charge transfer process results in highly-efficient separation of photogenerated charges, thus leading to greatly enhanced photocatalytic activity of g-C3N4/CNT/BFO composites. Furthermore, the g-C3N4/CNT/BFO composites also exhibit highly-efficient photo-Fenton-like catalysis property. © 2018 by the authors.
资助项目	Ministry of Education of China[Z2016074] ; Ministry of Education of China[Z2016075]
WOS研究方向	Science & Technology - Other Topics ; Instruments & Instrumentation
语种	英语
出版者	MDPI AG, Postfach, Basel, CH-4005, Switzerland
WOS记录号	WOS:000455072800004
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114452]
专题	省部共建有色金属先进加工与再利用国家重点实验室机电工程学院理学院
通讯作者	Yang, Hua
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 2.Qinghai Normal Univ, Coll Phys & Elect Informat Engn, Xining 810008, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Di, Lijing,Yang, Hua,Xian, Tao,et al. Construction of Z-Scheme g-C3N4/CNT/Bi2Fe4O9 composites with improved simulated-sunlight photocatalytic activity for the dye degradation[J]. Micromachines,2018,9(12).
APA	Di, Lijing,Yang, Hua,Xian, Tao,&Chen, Xiujuan.(2018).Construction of Z-Scheme g-C3N4/CNT/Bi2Fe4O9 composites with improved simulated-sunlight photocatalytic activity for the dye degradation.Micromachines,9(12).
MLA	Di, Lijing,et al."Construction of Z-Scheme g-C3N4/CNT/Bi2Fe4O9 composites with improved simulated-sunlight photocatalytic activity for the dye degradation".Micromachines 9.12(2018).