TY - JOUR
T1 - Enhanced gas sensing properties to acetone vapor achieved by α-Fe2O3 particles ameliorated with reduced graphene oxide sheets
AU - Zhang, Bo
AU - Liu, Jie
AU - Cui, Xiaobiao
AU - Wang, Yinglin
AU - Gao, Yuan
AU - Sun, Peng
AU - Liu, Fengmin
AU - Shimanoe, Kengo
AU - Yamazoe, Noboru
AU - Lu, Geyu
N1 - Funding Information:
This work was supported by the National Nature Science Foundation of China ( 61134010 , 61304242 , 61327804 , 61377058 , and 61474057 ), Program for Chang Jiang Scholars and Innovative Research Team in University (No. IRT13018 ), National High-Tech Research and Development Program of China (863 Program, No. 2013AA030902 and 2014AA06A505 ), China Postdoctoral Science Foundation (No. 2013M530979 ), Science and Technology Development Program of Jilin Province (No. 20150520091JH ).
PY - 2017/3/31
Y1 - 2017/3/31
N2 - A low-cost and environmentally friendly hydrothermal method was utilized to prepare reduced graphene oxide (rGO) and synthesize rGO/α-Fe2O3 composites with different rGO contents. The chemical composition and morphological essence of the as-prepared samples were characterized through multiple techniques. The results indicated that the uniform α-Fe2O3 cubes adhered uniformly on both sides of the crumpled and rippled rGO sheets. In addition, a series of resistive-type gas sensors were fabricated based on the as-prepared rGO/α-Fe2O3 composites as well as pure α-Fe2O3 to compare their gas-sensing properties toward acetone vapor. The composite containing 1.0 wt% rGO exhibited an enhanced gas response and its response time was shortened to 2 s. We attribute it to the extension of electron depletion layers, the change of charge carrier concentration, which are caused by the formation of local p-n heterojunctions when introducing rGO.
AB - A low-cost and environmentally friendly hydrothermal method was utilized to prepare reduced graphene oxide (rGO) and synthesize rGO/α-Fe2O3 composites with different rGO contents. The chemical composition and morphological essence of the as-prepared samples were characterized through multiple techniques. The results indicated that the uniform α-Fe2O3 cubes adhered uniformly on both sides of the crumpled and rippled rGO sheets. In addition, a series of resistive-type gas sensors were fabricated based on the as-prepared rGO/α-Fe2O3 composites as well as pure α-Fe2O3 to compare their gas-sensing properties toward acetone vapor. The composite containing 1.0 wt% rGO exhibited an enhanced gas response and its response time was shortened to 2 s. We attribute it to the extension of electron depletion layers, the change of charge carrier concentration, which are caused by the formation of local p-n heterojunctions when introducing rGO.
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U2 - 10.1016/j.snb.2016.11.023
DO - 10.1016/j.snb.2016.11.023
M3 - Article
AN - SCOPUS:84994634008
SN - 0925-4005
VL - 241
SP - 904
EP - 914
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
ER -