Fabrication of TiO2 nano-branched arrays/Cu2S composite structure and its photoelectric performance

Keying Guo; Zhifeng Liu; Cailou Zhou; Jianhua Han; Yufeng Zhao; Zhichao Liu; Yajun Li; Ting Cui; Bo Wang; Jing Zhang

doi:10.1016/j.apcatb.2014.02.004

Fabrication of TiO₂ nano-branched arrays/Cu₂S composite structure and its photoelectric performance

Keying Guo, Zhifeng Liu^*, Cailou Zhou, Jianhua Han, Yufeng Zhao, Zhichao Liu^*, Yajun Li, Ting Cui, Bo Wang, Jing Zhang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Hierarchical nanostructured TiO₂ is known to be ideal materials for photoelectrochemical water splitting because of its excellent light harvesting efficiency, efficient charge separation and transport properties. In the present work, rutile TiO₂ nano-branched arrays (NBs) were grown directly on transparent conductive glass (FTO) using a simple two-step hydrothermal method. TiO₂ NBs/Cu₂S composite structure was subsequently synthesized through successive ionic layer adsorption and reaction (SILAR). Detailed growth mechanisms for TiO₂ NBs nanostructure and TiO₂ NBs/Cu₂S composite structure were discussed. The optical property of composite structures was characterized, and enhanced absorption spectrum was discovered. A much higher hydrogen generation efficiency of 13.15% at 0.70V versus Ag/AgCl electrode was achieved for this TiO₂ NBs/Cu₂S composite structure. This is attributed to the improved light absorption and appropriate energy gap structure, which is over 40% higher than that of TiO₂ NWs/Cu₂S composite structure.

Original language	English
Pages (from-to)	27-35
Number of pages	9
Journal	Applied Catalysis B: Environmental
Volume	154-155
DOIs	https://doi.org/10.1016/j.apcatb.2014.02.004
State	Published - Jul 2014
Externally published	Yes

Keywords

Branched arrays
Composite structure
CuS
TiO
Water splitting

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.apcatb.2014.02.004

Cite this

@article{9141160924f849b29ff3663705e68c9f,

title = "Fabrication of TiO2 nano-branched arrays/Cu2S composite structure and its photoelectric performance",

abstract = "Hierarchical nanostructured TiO2 is known to be ideal materials for photoelectrochemical water splitting because of its excellent light harvesting efficiency, efficient charge separation and transport properties. In the present work, rutile TiO2 nano-branched arrays (NBs) were grown directly on transparent conductive glass (FTO) using a simple two-step hydrothermal method. TiO2 NBs/Cu2S composite structure was subsequently synthesized through successive ionic layer adsorption and reaction (SILAR). Detailed growth mechanisms for TiO2 NBs nanostructure and TiO2 NBs/Cu2S composite structure were discussed. The optical property of composite structures was characterized, and enhanced absorption spectrum was discovered. A much higher hydrogen generation efficiency of 13.15% at 0.70V versus Ag/AgCl electrode was achieved for this TiO2 NBs/Cu2S composite structure. This is attributed to the improved light absorption and appropriate energy gap structure, which is over 40% higher than that of TiO2 NWs/Cu2S composite structure.",

keywords = "Branched arrays, Composite structure, CuS, TiO, Water splitting",

author = "Keying Guo and Zhifeng Liu and Cailou Zhou and Jianhua Han and Yufeng Zhao and Zhichao Liu and Yajun Li and Ting Cui and Bo Wang and Jing Zhang",

note = "Funding Information: The authors gratefully acknowledge financial support from Nation Nature Science Foundation of China (No. 51102174 and No. 51202213 ).",

year = "2014",

month = jul,

doi = "10.1016/j.apcatb.2014.02.004",

language = "英语",

volume = "154-155",

pages = "27--35",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

publisher = "Elsevier",

}

TY - JOUR

T1 - Fabrication of TiO2 nano-branched arrays/Cu2S composite structure and its photoelectric performance

AU - Guo, Keying

AU - Liu, Zhifeng

AU - Zhou, Cailou

AU - Han, Jianhua

AU - Zhao, Yufeng

AU - Liu, Zhichao

AU - Li, Yajun

AU - Cui, Ting

AU - Wang, Bo

AU - Zhang, Jing

N1 - Funding Information: The authors gratefully acknowledge financial support from Nation Nature Science Foundation of China (No. 51102174 and No. 51202213 ).

PY - 2014/7

Y1 - 2014/7

N2 - Hierarchical nanostructured TiO2 is known to be ideal materials for photoelectrochemical water splitting because of its excellent light harvesting efficiency, efficient charge separation and transport properties. In the present work, rutile TiO2 nano-branched arrays (NBs) were grown directly on transparent conductive glass (FTO) using a simple two-step hydrothermal method. TiO2 NBs/Cu2S composite structure was subsequently synthesized through successive ionic layer adsorption and reaction (SILAR). Detailed growth mechanisms for TiO2 NBs nanostructure and TiO2 NBs/Cu2S composite structure were discussed. The optical property of composite structures was characterized, and enhanced absorption spectrum was discovered. A much higher hydrogen generation efficiency of 13.15% at 0.70V versus Ag/AgCl electrode was achieved for this TiO2 NBs/Cu2S composite structure. This is attributed to the improved light absorption and appropriate energy gap structure, which is over 40% higher than that of TiO2 NWs/Cu2S composite structure.

AB - Hierarchical nanostructured TiO2 is known to be ideal materials for photoelectrochemical water splitting because of its excellent light harvesting efficiency, efficient charge separation and transport properties. In the present work, rutile TiO2 nano-branched arrays (NBs) were grown directly on transparent conductive glass (FTO) using a simple two-step hydrothermal method. TiO2 NBs/Cu2S composite structure was subsequently synthesized through successive ionic layer adsorption and reaction (SILAR). Detailed growth mechanisms for TiO2 NBs nanostructure and TiO2 NBs/Cu2S composite structure were discussed. The optical property of composite structures was characterized, and enhanced absorption spectrum was discovered. A much higher hydrogen generation efficiency of 13.15% at 0.70V versus Ag/AgCl electrode was achieved for this TiO2 NBs/Cu2S composite structure. This is attributed to the improved light absorption and appropriate energy gap structure, which is over 40% higher than that of TiO2 NWs/Cu2S composite structure.

KW - Branched arrays

KW - Composite structure

KW - CuS

KW - TiO

KW - Water splitting

UR - http://www.scopus.com/inward/record.url?scp=84894675357&partnerID=8YFLogxK

U2 - 10.1016/j.apcatb.2014.02.004

DO - 10.1016/j.apcatb.2014.02.004

M3 - 文章

AN - SCOPUS:84894675357

SN - 0926-3373

VL - 154-155

SP - 27

EP - 35

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

ER -