Increasing gas sensitivity of Co3O4 octahedra by tuning Co-Co3O4 (111) surface structure and sensing mechanism of 3-coordinated Co atom as an active center

• Published in: Journal of materials science. Materials in electronics Vol. 31; no. 11; pp. 8852 - 8864
• Main Authors: Yuan, Yukun, Wang, Yingfei, He, Xiaoyan, Chen, Mengdi, Liu, Junfang, Liu, Bin, Zhao, Hua, Liu, Shengzhong, Yang, Heqing
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.06.2020; Springer Nature B.V
• Subjects: Acetone; Aqueous solutions; Atoms & subatomic particles; Characterization and Evaluation of Materials; Chemical reactions; Chemical synthesis; Chemistry and Materials Science; Cobalt oxides; Detection; Energy; Engineering; Ethanol; Free electrons; Gas sensors; Laboratories; Materials Science; Nanocrystals; Octahedrons; Optical and Electronic Materials; Scanning electron microscopy; Sensors; Surface structure; Triethylamine

Co 3 O 4 octahedrons enclosed by {111} facets were synthesized using Cl − ions as a crystal facet control agent. The Co 3 O 4 octahedrons show higher responses than Co 3 O 4 commercial particles to ethanol, methanol, acetone and triethylamine, and the responses are further enhanced by increasing the...