Epitaxial growth of WO3 nanoneedles achieved using a facile flame surface treatment process engineering of hole transport and water oxidation reactivity

	Epitaxial growth of WO3 nanoneedles achieved using a facile flame surface treatment process engineering of hole transport and water oxidation reactivity
	Jong Kyu Kim; Xiaolin Zheng; Jong Hyeok Park; Xinjian Shi; Lili Cai; Il Yong Choi; Ming Ma; Kan Zhang; Jiheng Zhao; Jung Kyu Kim
刊名	Journal of Materials Chemistry A
	2018
文献子类	期刊论文
英文摘要	Charge carrier dynamics and light harvesting ability are most important for the performance of a photoanode in photoelectrochemical (PEC) systems. In this work, through a facile flame surface treatment process in a reducing atmosphere, oriented WO3 nanoneedles are grown on pre-formed vertically aligned nanohelices. Nanohelices have excellent light harvesting abilities on their own; however, the addition of nanoneedles to the top of nanohelices increases the light harvesting abilities even further. More importantly, the reducing atmosphere for the post-treatment process enhances the metallic properties of WO3, changes the band position to facilitate hole transport, and modifies the flat band potential, all of which contribute to an improved performance in terms of photocurrent density and onset. The as-fabricated WO3 nanohelices/nanoneedles with a metallic interface have also been used for heterojunction photoanode fabrication for water oxidation through two- and four-electron pathways for H2O2 and O2 production, respectively.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/14409]
专题	深圳先进技术研究院_医工所
推荐引用方式 GB/T 7714	Jong Kyu Kim,Xiaolin Zheng,Jong Hyeok Park,et al. Epitaxial growth of WO3 nanoneedles achieved using a facile flame surface treatment process engineering of hole transport and water oxidation reactivity[J]. Journal of Materials Chemistry A,2018.
APA	Jong Kyu Kim.,Xiaolin Zheng.,Jong Hyeok Park.,Xinjian Shi.,Lili Cai.,...&Jung Kyu Kim.(2018).Epitaxial growth of WO3 nanoneedles achieved using a facile flame surface treatment process engineering of hole transport and water oxidation reactivity.Journal of Materials Chemistry A.
MLA	Jong Kyu Kim,et al."Epitaxial growth of WO3 nanoneedles achieved using a facile flame surface treatment process engineering of hole transport and water oxidation reactivity".Journal of Materials Chemistry A (2018).