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.
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 - 会议稿件
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 -
