Electrochemical synthesis of titania nanostructural arrays and their surface modification for enhanced photoelectrochemical hydrogen production

被引：18

作者：

Ishihara, Hidetaka ^{[2
]}

Bock, Jacob P. ^{[3
]}

Sharma, Rajesh ^{[1
]}

Hardcastle, Franklin ^{[4
]}

Kannarpady, Ganesh K. ^{[2
]}

Mazumder, Malay K. ^{[5
]}

Biris, Alexandru S. ^{[2
]}

机构：

[1] Arkansas State Univ, Renewable Energy Technol Program, Jonesboro, AR 72467 USA

[2] Univ Arkansas, Dept Appl Sci, UALR Nanotechnol Ctr, Little Rock, AR 72204 USA

[3] Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA

[4] Arkansas Tech Univ, Dept Chem, Russellville, AR 72801 USA

[5] Boston Univ, Dept Elect & Comp Engn, Boston, MA 02215 USA

来源：

CHEMICAL PHYSICS LETTERS | 2010年 / 489卷 / 1-3期

基金：

美国能源部;

关键词：

NANOTUBE ARRAYS; TIO2; NANOTUBES; OXIDE-FILMS; FABRICATION; DIOXIDE;

D O I：

10.1016/j.cplett.2010.02.038

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：

We synthesized nanostructured TiO2 photoanodes by electrochemical anodization with different geometries and investigated the effects of the electrode surface structure on the generation of hydrogen. The surface of the nanotubular photoanodes was then treated with helium plasma to remove contaminants and reduce the recombination sites. This was followed by nitrogen plasma treatment for surface doping with N-2. Surface treatment created oxygen vacancies and induced substitutional doping of N-2 at the titania surface. The results showed that the combination of novel surface structures coupled with plasma-assisted surface modification improves the photocurrent density of TiO2 photoanodes. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：81 / 85

页数：5

共 18 条

[1] Chemically enhanced sunlight for killing bacteria [J].

Block, SS ;

Seng, VP ;

Goswami, DW .

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME, 1997, 119 (01) :85-91

[2] The effect of electrolyte composition on the fabrication of self-organized titanium oxide nanotube arrays by anodic oxidation [J].

Cai, QY ;

Paulose, M ;

Varghese, OK ;

Grimes, CA .

JOURNAL OF MATERIALS RESEARCH, 2005, 20 (01) :230-236

[3]

Fujishima A., 1972, Nature, V37, P238

[4] Annealing effects on the photoresponse of TiO2 nanotubes [J].

Ghicov, A ;

Tsuchiya, H ;

Macak, JM ;

Schmuki, P .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2006, 203 (04) :R28-R30

[5] TiO2 Nanotubes in Dye-Sensitized Solar Cells: Critical Factors for the Conversion Efficiency [J].

Ghicov, Andrei ;

Albu, Sergiu P. ;

Hahn, Robert ;

Kim, Doohun ;

Stergiopoulos, Thomas ;

Kunze, Julia ;

Schiller, Carl-Albrecht ;

Falaras, Polycarpos ;

Schmuki, Patrik .

CHEMISTRY-AN ASIAN JOURNAL, 2009, 4 (04) :520-525

[6] Titanium dioxide nanotube arrays fabricated by anodizing processes - Electrochemical properties [J].

Lee, Woo-Jin ;

Alhoshan, Mansour ;

Smyrl, William H. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (11) :B499-B505

[7] Evaluation of photocatalytic properties of titanium oxide films prepared by plasma-enhanced chemical vapor deposition [J].

Maeda, M ;

Watanabe, T .

THIN SOLID FILMS, 2005, 489 (1-2) :320-324

[8] Microstructure modification of amorphous titanium oxide thin films during annealing treatment [J].

Martin, N ;

Rousselot, C ;

Rondot, D ;

Palmino, F ;

Mercier, R .

THIN SOLID FILMS, 1997, 300 (1-2) :113-121

[9] A review on highly ordered, vertically oriented TiO2 nanotube arrays:: Fabrication, material properties, and solar energy applications [J].

Mor, Gopal K. ;

Varghese, Oomman K. ;

Paulose, Maggie ;

Shankar, Karthik ;

Grimes, Craig A. .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2006, 90 (14) :2011-2075

[10] A new benchmark for TiO2 nanotube array growth by anodization [J].

Prakasam, Haripriya E. ;

Shankar, Karthik ;

Paulose, Maggie ;

Varghese, Oomman K. ;

Grimes, Craig A. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (20) :7235-7241

← 1 2 →