Better Charge Separation in CuO Nanowire Array Photocathodes: Micro-/Nanostructure Regulation for Photoelectrochemical Reaction

doi:10.1021/acsaem.0c00554

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Better Charge Separation in CuO Nanowire Array Photocathodes: Micro-/Nanostructure Regulation for Photoelectrochemical Reaction
	Cao, Yufeng ; Liu, Deyu ; Ni, Xin ; Meng, Xiangrui ; Zhou, Yang ; Sun, Zhenfan ; Kuang, Yongbo
刊名	ACS APPLIED ENERGY MATERIALS
	2020
卷号	3 期号:7 页码:6334-6343
关键词	WARBURG IMPEDANCE FACILE SYNTHESIS THIN-FILMS COPPER GROWTH NANOSTRUCTURES PERFORMANCE FABRICATION NUCLEATION DEPOSITION
DOI	10.1021/acsaem.0c00554
英文摘要	Geometrical optimization of nanowire arrays (NWAs) has been regarded as a straightforward and important route to improve the performance for photoelectrocatalytic systems but has not been realized with copper oxides yet. In this work we successfully performed the control to CuO NWAs via electrochemically prepared Cu(OH)(2) intermediate structures. The arrays consist of uniform nanowires with tunable length from 2 to 10 mu m and aspect ratios over 100. Results suggest that the optimization can significantly improve the photocurrents several times, which is mostly due to a quantum efficiency over 57% (455 nm) in the presence of electron scavengers. Notably diverged charge transport and transfer between NWAs were revealed by photoelectrochemical impedance and Mott-Schottky measurements, which suggest the necessity of suitable structure for the better charge separation and collection. Moreover, our protocol can be adapted to prepare Cu2O NWAs, which can provide great potential for developing high-performance photocathodes in the future.
学科主题	Chemistry ; Energy & Fuels ; Materials Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20633]
专题	2020专题
作者单位	1.Kuang, YB (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Sun, ZF (corresponding author), Hainan Normal Univ, Sch Chem & Chem Engn, Haikou 571158, Hainan, Peoples R China. 3.Liu, DY 4.Kuang, YB (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China.
推荐引用方式 GB/T 7714	Cao, Yufeng,Liu, Deyu,Ni, Xin,et al. Better Charge Separation in CuO Nanowire Array Photocathodes: Micro-/Nanostructure Regulation for Photoelectrochemical Reaction[J]. ACS APPLIED ENERGY MATERIALS,2020,3(7):6334-6343.
APA	Cao, Yufeng.,Liu, Deyu.,Ni, Xin.,Meng, Xiangrui.,Zhou, Yang.,...&Kuang, Yongbo.(2020).Better Charge Separation in CuO Nanowire Array Photocathodes: Micro-/Nanostructure Regulation for Photoelectrochemical Reaction.ACS APPLIED ENERGY MATERIALS,3(7),6334-6343.
MLA	Cao, Yufeng,et al."Better Charge Separation in CuO Nanowire Array Photocathodes: Micro-/Nanostructure Regulation for Photoelectrochemical Reaction".ACS APPLIED ENERGY MATERIALS 3.7(2020):6334-6343.