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Constructing Hierarchical Heterostructured Mn 3 O 4 /Zn 2 SnO 4 Materials for Efficient Gas Sensing Reaction
Author(s) -
Zhou Tingting,
Liu Xiupeng,
Zhang Rui,
Wang Lili,
Zhang Tong
Publication year - 2018
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201800115
Subject(s) - nanorod , materials science , heterojunction , nanowire , hydrothermal circulation , nanomaterials , selectivity , nanotechnology , sensitivity (control systems) , nanostructure , acetone , specific surface area , chemical engineering , catalysis , optoelectronics , chemistry , organic chemistry , electronic engineering , engineering , biochemistry
Hybrid 1D nanomaterials with hierarchical structure have received a great deal of attention as sensing materials for gas sensors due to their high surface area, excellent catalytic performance, and robust structure. Novel Zn 2 SnO 4 nanorod‐decorated Mn 3 O 4 nanowire 1D nanostructures are prepared by a two‐step hydrothermal method and subsequent heat treatment for application in gas sensors. The branch‐like Mn 3 O 4 /Zn 2 SnO 4 composite‐based sensor exhibits high sensitivity and excellent selectivity for the detection of acetone gas. Importantly, the sensitivity of acetone‐gas sensor can be improved by optimizing the content of Zn 2 SnO 4 nanorods on the surface of Mn 3 O 4 nanowires. As a result, such a 1D–1D branch‐like Mn 3 O 4 /Zn 2 SnO 4 hierarchical structure with effective p–n heterojunction and large specific surface area would display excellent electron transport property, which determines if the material is capable of recognizing target gases, thus enabling the sensor to achieve high sensitivity.