Elevated temperature annealed α-Fe2O3/reduced graphene oxide nanocomposite photoanode for photoelectrochemical water oxidation

被引：41
作者：
Nasiri, M. [1 ]
Sangpour, P. [1 ]
Yousefzadeh, S. [2 ]
Bagheri, M. [1 ]
机构：
[1] Mat & Energy Res Ctr, Dept Nanotechnol & Adv Mat, Karaj, Iran
[2] Sahand Univ Technol, Fac Sci, Dept Phys, Tabriz, Iran
来源：
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2019年 / 7卷 / 02期
基金：
美国国家科学基金会;
关键词：
Reduced graphene oxide; alpha-Fe2O3; Photoanode; Photoelectrochemical; Electrodeposition; ANODE MATERIAL; NANOPARTICLES; COMPOSITE; NITROGEN;
D O I：
10.1016/j.jece.2019.102999
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The aim of this study is to investigate the photoelectrochemical (PEC) water splitting properties of alpha-Fe2O3/reduced graphene oxide nanocomposite (alpha-Fe2O3/rGO) and the significance of annealing temperature on the photoelectrochemical performance. The alpha-Fe2O3/rGO nanocomposite deposited on FTO substrate, using electrochemical deposition and annealed in atmospheric N-2 at 300, 500 and 700 degrees C. The synthesized nanocomposites were characterized by raman spectroscopy, X-ray photoelectron spectroscopy, and field emission scanning electron microscopy. The alpha-Fe2O3/rGO nanocomposites were used as photoanode materials in the PEC water splitting process. The results shows the reduced graphene oxide acts as an electron acceptor leading to an increase of availability of photo-generated electrons and hence higher PEC performance of alpha-Fe2O3/rGO nanocomposites compared to pure alpha-Fe2O3. The photoanode annealed at 700 degrees C shows the highest PEC performance.
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页数：7
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