Structural, optical and photo-electrochemical properties of hydrothermally grown ZnO nanorods arrays covered with α-Fe2O3 nanoparticles

被引：23

作者：

Chakraborty, Mohua ^{[1
]}

Roy, Dhrubojyoti ^{[2
]}

Biswas, Amrita ^{[3
]}

Thangavel, R. ^{[1
]}

Udayabhanu, G. ^{[3
]}

机构：

[1] Indian Sch Mines, Dept Appl Phys, Solar Energy Res Lab, Dhanbad 826004, Bihar, India

[2] Indian Inst Technol, Samtel Ctr Display Technol, Kanpur 208016, Uttar Pradesh, India

[3] Indian Sch Mines, Dept Appl Chem, Dhanbad 826004, Bihar, India

来源：

RSC ADVANCES | 2016年 / 6卷 / 79期

关键词：

PHOTOCATALYTIC ACTIVITY; WATER; TIO2; NANOSTRUCTURES; HEMATITE; PERFORMANCE; FILMS;

D O I：

10.1039/c6ra15752a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A low cost hydrothermal method and subsequent wet-chemical process has been used for the preparation of a ZnO nanorod (NR) array film grown on tin doped indium oxide (ITO) coated glass substrates, post decorated by alpha-Fe2O3 nanoparticles (NPs). The effect of the amount of alpha-Fe2O3 NPs on the properties of ZnO NRs such as electron scattering, surface roughness, photo-charge transport and interface recombination has been investigated. Furthermore, the optimized alpha-Fe2O3 NPs@ZnO exhibited enhanced light absorption, charge separation and charge transport properties, as characterized by UV-vis absorption spectra and the photo-electrochemical characterization by Linear Sweep Voltammetry (LSV) and Electrochemical Impedance Spectroscopy (EIS). An optimum amount of alpha-Fe2O3 NPs on the ZnO NRs enhanced the photocurrent density by 163% and the photo-conversion efficiency by more than 2.5 times compared to those of the bare ZnO NRs. These results indicated that the prepared alpha-Fe2O3 NPs@ZnO NRs could serve as an efficient photo-electrode material for photo-electrochemical cells.

引用

页码：75063 / 75072

页数：10

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