TY - JOUR
T1 - Mesoporous In2O3 structures
T2 - Hydrothermal synthesis and enhanced Cl2 sensing performance
AU - Li, Pei
AU - Fan, Huiqing
AU - Cai, Yu
PY - 2014/7/5
Y1 - 2014/7/5
N2 - A facile hydrothermal route was employed to synthesize the mesoporous In2O3 structures including nanorod, nanocube, and microcube with Span-40 as surfactant. The morphologies feature of the mesoporous In2O3 structures consisted of rectangular-like and irregular-shaped cubes with porous surfaces, and the amount of Span-40-added significantly affected the overall morphology. The BET results verified the porous architectures and large BET surface area of the mesoporous In2O3 structures (sample S5), which contributed to an improvement in gas sensing characteristics. Furthermore, the gas sensing characteristics of the obtained products were studied. The results demonstrated that the sensors based on Span-40-added In2O3 structures exhibited a much higher response to Cl2 than those without span-40, and the 1.5mmol Span-40-added structures (S5) showed the highest response of 28.7±4.1 for 5ppm Cl2. The quick response-recovery behavior and excellent stability imply good potential for practical applications. Finally, the gas sensing mechanism was studied.
AB - A facile hydrothermal route was employed to synthesize the mesoporous In2O3 structures including nanorod, nanocube, and microcube with Span-40 as surfactant. The morphologies feature of the mesoporous In2O3 structures consisted of rectangular-like and irregular-shaped cubes with porous surfaces, and the amount of Span-40-added significantly affected the overall morphology. The BET results verified the porous architectures and large BET surface area of the mesoporous In2O3 structures (sample S5), which contributed to an improvement in gas sensing characteristics. Furthermore, the gas sensing characteristics of the obtained products were studied. The results demonstrated that the sensors based on Span-40-added In2O3 structures exhibited a much higher response to Cl2 than those without span-40, and the 1.5mmol Span-40-added structures (S5) showed the highest response of 28.7±4.1 for 5ppm Cl2. The quick response-recovery behavior and excellent stability imply good potential for practical applications. Finally, the gas sensing mechanism was studied.
KW - BET surface area
KW - Hydrothermal synthesis
KW - Mesoporous structures
UR - http://www.scopus.com/inward/record.url?scp=84899003154&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2014.04.004
DO - 10.1016/j.colsurfa.2014.04.004
M3 - 文章
AN - SCOPUS:84899003154
SN - 0927-7757
VL - 453
SP - 109
EP - 116
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
IS - 1
ER -