Improvement of the Photoelectrochemical Performance of TiO2 Nanorod Array by PEDOT and Oxygen Vacancy Co-Modification

被引：8

作者：

Yang, Bin ^{[1
]}

Chen, Guoqiang ^{[2
]}

Tian, Huiwen ^{[3
]}

Wen, Lei ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Natl Ctr Mat Serv Safety, Beijing 100083, Peoples R China

[2] Beijing Gen Res Inst, Min & Met Grp, Beijing 100160, Peoples R China

[3] Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Shandong, Peoples R China

来源：

CATALYSTS | 2019年 / 9卷 / 05期

基金：

中国国家自然科学基金;

关键词：

oxygen vacancy; polymeric composites; photoelectrochemistry; co-modification; solar energy conversion; PHOTOCATALYTIC ACTIVITY; WATER; CONDUCTIVITY; NANOFIBERS; FILMS;

D O I：

10.3390/catal9050407

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, oxygen vacancy modified TiO2 nanorod array photoelectrode was prepared by reducing hydrogen atmosphere to increase its free charge carrier density. Subsequently, a p-type conductive poly 3,4-ethylenedioxythiophene (PEDOT) layer was deposited on the surface of oxygen vacancy modified TiO2, to inhibit the surface states. Meanwhile, a p-n heterojunction formed between PEDOT and TiO2 to improve the separation of photo-induced carriers further. The photocurrent of TiO2 nanorod array increased to nearly 0.9 mA/cm(2) after the co-modification under standard sunlight illumination, whose value is nearly nine times higher than that of pure TiO2 nanorod array. Thus, this is a promising modification method for TiO2 photoanode photoelectrochemical (PEC) performance improving.

引用

页数：10

共 27 条

[11] A novel photoelectrochemical cell with self-organized TiO2 nanotubes as photoanodes for hydrogen generation [J].

Li, Yongkun ;

Yu, Hongmei ;

Song, Wei ;

Li, Guangfu ;

Yi, Baolian ;

Shao, Zhigang .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2011, 36 (22) :14374-14380

[12] Growth of Oriented Single-Crystalline Rutile TiO2 Nanorods on Transparent Conducting Substrates for Dye-Sensitized Solar Cells [J].

Liu, Bin ;

Aydil, Eray S. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (11) :3985-3990

[13] Semiconductor Nanowires for Artificial Photosynthesis [J].

Liu, Chong ;

Dasgupta, Neil P. ;

Yang, Peidong .

CHEMISTRY OF MATERIALS, 2014, 26 (01) :415-422

[14] Oxygen Vacancy Clusters Promoting Reducibility and Activity of Ceria Nanorods [J].

Liu, Xiangwen ;

Zhou, Kebin ;

Wang, Lei ;

Wang, Baoyi ;

Li, Yadong .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (09) :3140-+

[15] Photocatalytic TiO2 Nanorod Spheres and Arrays Compatible with Flexible Applications [J].

Nunes, Daniela ;

Pimentel, Ana ;

Santos, Lidia ;

Barquinha, Pedro ;

Fortunato, Elvira ;

Martins, Rodrigo .

CATALYSTS, 2017, 7 (02)

[16] PEDOT:PSS with embedded TiO2 nanoparticles as light trapping electrode for organic photovoltaics [J].

Park, Yoonseok ;

Mueller-Meskamp, Lars ;

Vandewal, Koen ;

Leo, Karl .

APPLIED PHYSICS LETTERS, 2016, 108 (25)

[17] Layer-by-layer assembled TiO2 nanoparticle/PEDOT-PSS composite films for switching of electric conductivity in response to ultraviolet and visible light [J].

Sakai, Nobuyuki ;

Prasad, Gangavarapu K. ;

Ebina, Yasuo ;

Takada, Kazunori ;

Sasaki, Takayoshi .

CHEMISTRY OF MATERIALS, 2006, 18 (16) :3596-3598

[18] Preparation and photo-catalytic activity of Fe-TiO2 thin films prepared by sol-gel clip coating [J].

Sonawane, RS ;

Kale, BB ;

Dongare, MK .

MATERIALS CHEMISTRY AND PHYSICS, 2004, 85 (01) :52-57

[19] Enhanced Thermoelectric Metrics in Ultra-long Electrodeposited PEDOT Nanowires [J].

Taggart, David K. ;

Yang, Yongan ;

Kung, Sheng-Chin ;

McIntire, Theresa M. ;

Penner, Reginald M. .

NANO LETTERS, 2011, 11 (01) :125-131

[20] Sulfur- and Carbon-Codoped Carbon Nitride for Photocatalytic Hydrogen Evolution Performance Improvement [J].

Tian, Huiwen ;

Zhang, Xiaoying ;

Bu, Yuyu .

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2018, 6 (06) :7346-7354

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