TY - JOUR
T1 - Porous platelike hematite mesocrystals
T2 - Synthesis, catalytic and gas-sensing applications
AU - Ma, Jianmin
AU - Teo, Jaclyn
AU - Mei, Lin
AU - Zhong, Ziyi
AU - Li, Qiuhong
AU - Wang, Taihong
AU - Duan, Xiaochuan
AU - Lian, Jiabiao
AU - Zheng, Wenjun
PY - 2012/6/21
Y1 - 2012/6/21
N2 - Porous platelike α-Fe 2O 3 mesocrystals, composed of single crystalline nanoparticles, were prepared via a controlled solvent evaporation process in the presence of an ionic liquid [Bmim]Cl, which acted as both the solvent and the templating reagent. Compared to the Au/α-Fe 2O 3 (Fluka) catalyst, a significantly enhanced CO oxidation activity on the Au/porous platelike α-Fe 2O 3 mesocrystal catalyst was observed, which may be attributed to its more highly exposed (110) facet in the porous platelike α-Fe 2O 3 mesocrystals. Moreover, good repeatability and fast response and recovery times were obtained in an acetone sensitivity test conducted on the α-Fe 2O 3 nanoplates, produced via annealing of the porous platelike α-Fe 2O 3 mesocrystals at 400 °C. It is expected that this method is applicable to the synthesis of other inorganic functional oxides with unique structures and properties.
AB - Porous platelike α-Fe 2O 3 mesocrystals, composed of single crystalline nanoparticles, were prepared via a controlled solvent evaporation process in the presence of an ionic liquid [Bmim]Cl, which acted as both the solvent and the templating reagent. Compared to the Au/α-Fe 2O 3 (Fluka) catalyst, a significantly enhanced CO oxidation activity on the Au/porous platelike α-Fe 2O 3 mesocrystal catalyst was observed, which may be attributed to its more highly exposed (110) facet in the porous platelike α-Fe 2O 3 mesocrystals. Moreover, good repeatability and fast response and recovery times were obtained in an acetone sensitivity test conducted on the α-Fe 2O 3 nanoplates, produced via annealing of the porous platelike α-Fe 2O 3 mesocrystals at 400 °C. It is expected that this method is applicable to the synthesis of other inorganic functional oxides with unique structures and properties.
UR - http://www.scopus.com/inward/record.url?scp=84862231016&partnerID=8YFLogxK
U2 - 10.1039/c2jm30216k
DO - 10.1039/c2jm30216k
M3 - 文章
AN - SCOPUS:84862231016
SN - 0959-9428
VL - 22
SP - 11694
EP - 11700
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
IS - 23
ER -