TY - GEN
T1 - Surface modification of α-Fe 2O 3 nanorod array photoanodes for improved light-induced water splitting
AU - Shen, Shaohua
AU - Kronawitter, Coleman X.
AU - Jiang, Jiangang
AU - Guo, Liejin
AU - Mao, Samuel S.
N1 - Funding Information:
The authors would like to thank Dr. Lionel Vayssieres for suggestive discussion. The authors are supported by National Natural Science Foundation of China (No. 50821064 and No. 91010012) and National Basic Research Program of China (No. 2009CB220000). One of the authors (SS) was supported by “the Fundamental Research Funds for the Central University”.
PY - 2011
Y1 - 2011
N2 - α-Fe 2O 3 nanorod arrays were fabricated by a low-temperature aqueous chemical growth (ACG) technique and followed by an annealing process. For the surface doping of α-Fe 2O 3 nanorods, β-FeOOH nanorods obtained via ACG were coated with a thin layer of Cr 3+ precursor solution by spin coating, and then underwent the annealing treatment in air. Conducting polymer polypyrrole (PPy) decorated α-Fe 2O 3 nanorods were prepared by electrodeposition method using malic acid contained pyrrole aqueous solution. Primary results showed that the photocurrents of α-Fe 2O 3 nanorod array photoanodes were greatly enhanced by surface doping of Cr 3+, as well as PPy decoration. This might be due to the retarded charge recombination and promoted surface reaction rate of photogenerated holes with water. Further investigation on surface modification of α-Fe 2O 3 nanorod array photoanodes is currently conducted in our group.
AB - α-Fe 2O 3 nanorod arrays were fabricated by a low-temperature aqueous chemical growth (ACG) technique and followed by an annealing process. For the surface doping of α-Fe 2O 3 nanorods, β-FeOOH nanorods obtained via ACG were coated with a thin layer of Cr 3+ precursor solution by spin coating, and then underwent the annealing treatment in air. Conducting polymer polypyrrole (PPy) decorated α-Fe 2O 3 nanorods were prepared by electrodeposition method using malic acid contained pyrrole aqueous solution. Primary results showed that the photocurrents of α-Fe 2O 3 nanorod array photoanodes were greatly enhanced by surface doping of Cr 3+, as well as PPy decoration. This might be due to the retarded charge recombination and promoted surface reaction rate of photogenerated holes with water. Further investigation on surface modification of α-Fe 2O 3 nanorod array photoanodes is currently conducted in our group.
UR - https://www.scopus.com/pages/publications/84860210369
U2 - 10.1557/opl.2011.1045
DO - 10.1557/opl.2011.1045
M3 - Conference contribution
AN - SCOPUS:84860210369
SN - 9781618395238
T3 - Materials Research Society Symposium Proceedings
SP - 80
EP - 85
BT - Renewable Fuels and Nanotechnology
T2 - 2011 MRS Spring Meeting
Y2 - 25 April 2011 through 29 April 2011
ER -