The enhanced water splitting activity of a ZnO-based photoanode by modification with self-doped lanthanum ferrite

doi:10.1039/d1nr02673a

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	The enhanced water splitting activity of a ZnO-based photoanode by modification with self-doped lanthanum ferrite
	Long, Xuefeng 1; Wang, Tong 2; Jin, Jun 2; Zhao, Xinhong 1; Ma, Jiantai 2
刊名	NANOSCALE
	2021-07-07
卷号	13 期号:25 页码:11215-11222
关键词	Carrier mobility Charge transfer Electrochemistry Ferrite Heterojunctions II-VI semiconductors Lanthanum Oxide minerals Photocurrents Wide band gap semiconductors Zinc oxide Electrode modification Improvement strategies Modification process Oxygen evolution activity Photocurrent density Photoelectrochemical properties Photoelectrochemical water splitting Utilization efficiency
ISSN号	2040-3364
DOI	10.1039/d1nr02673a
英文摘要	The difficult separation and transfer of photoexcited charge carriers in composite photoelectrodes is a decisive factor limiting the efficiencies of semiconductor-based photoelectrochemical water splitting systems. Herein, to further enhance the photoelectrochemical properties of ZnO-based photoanodes, we constructed composite ZnO nanoarray photoanodes with Fe-self-doped lanthanum ferrite (denoted as La1-xFe1+xO3/ZnO NRs), which had the effect of killing two birds with one stone. This improvement strategy differs from the previously popular multi-step modification process, and integrates the dual benefits of a heterojunction and cocatalyst using the same material, the doped LaFeO3, which bypasses the shortcomings of multi-step charge transfer. Gratifyingly, benefitting from the suitable energy bands and excellent electrocatalytic oxygen evolution activity of La0.9Fe1.1O3, the photoanode exhibits outstanding bulk charge separation and surface charge utilization efficiencies, as well as achieving a photocurrent density that is over three times higher than that of pristine ZnO NRs, with a small onset potential (0.33 V vs. RHE). This electrode modification concept provides guidance for the development of other highly active photoelectrodes.
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000663883300001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148905]
专题	石油化工学院
作者单位	1.Lanzhou Univ Technol, Key Lab Low Carbon Energy & Chem Engn Gansu Prov, Sch Petrochem Technol, Langongping Rd 287, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ, Key Lab Catalyt Engn Gansu Prov, State Key Lab Appl Organ Chem SKLAOC, Coll Chem & Chem Engn, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Long, Xuefeng,Wang, Tong,Jin, Jun,et al. The enhanced water splitting activity of a ZnO-based photoanode by modification with self-doped lanthanum ferrite[J]. NANOSCALE,2021,13(25):11215-11222.
APA	Long, Xuefeng,Wang, Tong,Jin, Jun,Zhao, Xinhong,&Ma, Jiantai.(2021).The enhanced water splitting activity of a ZnO-based photoanode by modification with self-doped lanthanum ferrite.NANOSCALE,13(25),11215-11222.
MLA	Long, Xuefeng,et al."The enhanced water splitting activity of a ZnO-based photoanode by modification with self-doped lanthanum ferrite".NANOSCALE 13.25(2021):11215-11222.