TY - JOUR
T1 - Construction of NiO@ZnSnO3 hierarchical microspheres decorated with NiO nanosheets for formaldehyde sensing
AU - Bai, Shouli
AU - Tian, Ye
AU - Zhao, Yanhong
AU - Fu, Hang
AU - Tang, Pinggui
AU - Luo, Ruixian
AU - Li, Dianqing
AU - Chen, Aifan
AU - Liu, Chung Chiun
N1 - Publisher Copyright:
© 2017
PY - 2018/4/15
Y1 - 2018/4/15
N2 - The composite of ZnSnO3 hierarchical microspheres decorated with NiO nanosheets have been synthesized by a facile solution-based chemical precipitation at 85 °C followed by self-assembly and annealing, which is low-cost and high-yield. The structure, morphology, composition and specific surface of composite were characterized by XRD, SEM, TG, XPS and BET analysis, respectively. The gas sensing experiments show that the sensor based on composite of NiO/ZnSnO3 mole ratio of 1:10 not only exhibits high response of 2.2 and 10.4 to 0.1 and 1 ppm formaldehyde, respectively and good selectivity to some of reducing gases, but also has low detection limit and rapid response and recovery at operating temperature of 85 °C. The mechanism of composite enhancing gas sensing was also discussed in detail, which can be ascribed to the large specific surface area of composite and the formation of p-n heterojunctions at the interface between NiO and ZnSnO3.
AB - The composite of ZnSnO3 hierarchical microspheres decorated with NiO nanosheets have been synthesized by a facile solution-based chemical precipitation at 85 °C followed by self-assembly and annealing, which is low-cost and high-yield. The structure, morphology, composition and specific surface of composite were characterized by XRD, SEM, TG, XPS and BET analysis, respectively. The gas sensing experiments show that the sensor based on composite of NiO/ZnSnO3 mole ratio of 1:10 not only exhibits high response of 2.2 and 10.4 to 0.1 and 1 ppm formaldehyde, respectively and good selectivity to some of reducing gases, but also has low detection limit and rapid response and recovery at operating temperature of 85 °C. The mechanism of composite enhancing gas sensing was also discussed in detail, which can be ascribed to the large specific surface area of composite and the formation of p-n heterojunctions at the interface between NiO and ZnSnO3.
KW - Formaldehyde sensor
KW - NiO@ZnSnO hierarchical microspheres
KW - p-n junction
UR - http://www.scopus.com/inward/record.url?scp=85039713208&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2017.10.176
DO - 10.1016/j.snb.2017.10.176
M3 - 期刊論文
AN - SCOPUS:85039713208
SN - 0925-4005
VL - 259
SP - 908
EP - 916
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
ER -