TY - JOUR
T1 - Hierarchical hollow MoS2 microspheres as materials for conductometric NO2 gas sensors
AU - Li, Yixue
AU - Song, Zhongxiao
AU - Li, Yanan
AU - Chen, Shuai
AU - Li, Sha
AU - Li, Yanhuai
AU - Wang, Hairong
AU - Wang, Zuankai
N1 - Funding Information:
We thank the financial support from the National Nature Science Foundation (Grant No. 51671154, 11472080, 51675420), the National Key Research and Development Program of China (Grant No. 2016YFB0700404), the National Basic Research Program of China (“973 program”) (Grant No. 2015CB057400) and Shaanxi province a science and technology development project (Grant No. S2015GY143).
Funding Information:
We thank the financial support from the National Nature Science Foundation (Grant No. 5 1671154 , 11472080 , 51675420 ), the National Key Research and Development Program of China (Grant No. 2016YFB0700404 ), the National Basic Research Program of China (“973 program”) (Grant No. 2015CB057400 ) and Shaanxi province a science and technology development project (Grant No. S2015GY143 ).
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2019/3/1
Y1 - 2019/3/1
N2 - Surface structure control at the atomic scale is an efficient strategy for improving the performance of gas sensing. Herein, hierarchical hollow MoS2 microspheres with enhanced performance for NO2 gas sensing were synthesized via a facile hydrothermal method. The introduction of micro-nano hierarchical structure improved the exposure of active edge sites of MoS2, and the efficiency of gas and carriers exchange and transportation during the reaction, which synthetically contribute the sensing performance enhancement. With additional optimization of reaction conditions, the hierarchical hollow MoS2 microspheres show excellent sensing performance with 3.1 times enhancement compared with the contrast sample of smooth solid structure. The rapid and sensitive response, decreased working temperature, as well as the prominent selectivity, enable the material with attractive sensing performance for NO2 detection. This study provides new opportunities on the surface morphology control at both the micro- and nanoscale for enhancing the sensing performance of MoS2.
AB - Surface structure control at the atomic scale is an efficient strategy for improving the performance of gas sensing. Herein, hierarchical hollow MoS2 microspheres with enhanced performance for NO2 gas sensing were synthesized via a facile hydrothermal method. The introduction of micro-nano hierarchical structure improved the exposure of active edge sites of MoS2, and the efficiency of gas and carriers exchange and transportation during the reaction, which synthetically contribute the sensing performance enhancement. With additional optimization of reaction conditions, the hierarchical hollow MoS2 microspheres show excellent sensing performance with 3.1 times enhancement compared with the contrast sample of smooth solid structure. The rapid and sensitive response, decreased working temperature, as well as the prominent selectivity, enable the material with attractive sensing performance for NO2 detection. This study provides new opportunities on the surface morphology control at both the micro- and nanoscale for enhancing the sensing performance of MoS2.
KW - Gas sensor
KW - Hierarchical structure
KW - Hollow microspheres
KW - MoS
KW - NO
UR - http://www.scopus.com/inward/record.url?scp=85056779157&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2018.11.069
DO - 10.1016/j.snb.2018.11.069
M3 - Journal article
AN - SCOPUS:85056779157
SN - 0925-4005
VL - 282
SP - 259
EP - 267
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
ER -