Iron doped nanostructured TiO2 for photoelectrochemical generation of hydrogen

被引：119

作者：

Singh, Aadesh P. ^{[1
]}

Kumari, Saroj ^{[1
]}

Shrivastav, Rohit ^{[2
]}

Dass, Sahab ^{[2
]}

Satsangi, Vibha R. ^{[1
]}

机构：

[1] Dayalbagh Educ Inst, Fac Sci, Dept Phys & Comp Sci, Agra 5, Uttar Pradesh, India

[2] Dayalbagh Educ Inst, Fac Sci, Dept Chem, Agra 5, Uttar Pradesh, India

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2008年 / 33卷 / 20期

关键词：

Photoelectrochemical; Hydrogen; Iron doping; TiO2; Sol-gel;

D O I：

10.1016/j.ijhydene.2008.07.041

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：

This paper describes the photoelectrochemical studies on nanostructured iron doped titanium dioxide (TiO2) thin films prepared by sol-gel spin coating method. Thin films were characterized by X-ray diffraction, Raman spectroscopy, spectral absorbance, atomic force microscopy and photoelectrochemical (PEC) measurements. XRD study shows that the films were polycrystalline with the photoactive anatase phase of TiO2. Doping of Fe in TiO2 resulted in a shift of absorption edge towards the visible region of solar spectrum. The observed bandgap energy decreased from 3.3 to 2.89 eV on increasing the doping concentration upto 0.2 at.% Fe. 0.2 at.% Fe doped TiO2 exhibited the highest photocurrent density, similar to 0.92 mA/cm(2) at zero external bias. Flatband potential and donor density determined from the Mott-Schottky plots were found to vary with doping concentration from -0.54 to -0.92 V/SCE and 1.7 x 10(19) to 4.3 x 10(19) cm(-3), respectively. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：5363 / 5368

页数：6

共 28 条

[1] Performance of tin doped titania hollow spheres as electrocatalysts for hydrogen and oxygen production in water electrolysis [J].

Chattopadhyay, Jayeeta ;

Kim, Hong Rok ;

Moon, Sang Bong ;

Pak, Daewon .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (13) :3270-3280

[2] THE ROLE OF METAL-ION DOPANTS IN QUANTUM-SIZED TIO2 - CORRELATION BETWEEN PHOTOREACTIVITY AND CHARGE-CARRIER RECOMBINATION DYNAMICS [J].

CHOI, WY ;

TERMIN, A ;

HOFFMANN, MR .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (51) :13669-13679

[3] Photoelectrochemical behavior of Nb-doped TiO2 electrodes [J].

Emeline, AV ;

Furubayashi, Y ;

Zhang, XT ;

Jin, M ;

Murakami, T ;

Fujishima, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (51) :24441-24444

[4]

FUEL C, 2007, RARE METALS, V26, P565

[5]

Fujishima A., 2000, Journal of Photochemistry and Photobiology C: Photochemistry Reviews, V1, P1, DOI [10.1016/S1389-5567(00)00002-2, DOI 10.1016/S1389-5567(00)00002-2]

[6] Structural, optical, and photoelectrochemical properties of Mn+-TiO2 model thin film photocatalysts [J].

Gracia, F ;

Holgado, JP ;

Caballero, A ;

Gonzalez-Elipe, AR .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (45) :17466-17476

[7] FLATBAND POTENTIALS AND DONOR DENSITIES OF POLYCRYSTALLINE ALPHA-FE2O3 DETERMINED FROM MOTT-SCHOTTKY PLOTS [J].

KENNEDY, JH ;

FRESE, KW .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1978, 125 (05) :723-726

[8] STUDY OF THE SCHOTTKY-BARRIER AND DETERMINATION OF THE ENERGETIC POSITIONS OF BAND EDGES AT THE N-TYPE AND P-TYPE GALLIUM INDIUM-PHOSPHIDE ELECTRODE-ELECTROLYTE INTERFACE [J].

KOCHA, SS ;

TURNER, JA ;

NOZIK, AJ .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1994, 367 (1-2) :27-30

[9] Photoelectrochemical and optical properties of nitrogen doped titanium dioxide films prepared by reactive DC magnetron sputtering [J].

Lindgren, T ;

Mwabora, JM ;

Avendaño, E ;

Jonsson, J ;

Hoel, A ;

Granqvist, CG ;

Lindquist, SE .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (24) :5709-5716

[10] Study of modular PEC solar cells for photoelectrochemical splitting of water employing nanostructured TiO2 photoelectrodes [J].

Mishra, P. R. ;

Shukla, P. K. ;

Srivastava, O. N. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2007, 32 (12) :1680-1685

← 1 2 3 →