NiO/NiCo2O4 Truncated Nanocages with PdO Catalyst Functionalization as Sensing Layers for Acetone Detection

Tingting Zhou; Xiupeng Liu; Rui Zhang; Yubing Wang; Tong Zhang

doi:10.1021/acsami.8b12981

NiO/NiCo₂O₄ Truncated Nanocages with PdO Catalyst Functionalization as Sensing Layers for Acetone Detection

ACS Appl Mater Interfaces. 2018 Oct 31;10(43):37242-37250. doi: 10.1021/acsami.8b12981. Epub 2018 Oct 22.

Authors

Tingting Zhou¹, Xiupeng Liu¹, Rui Zhang¹, Yubing Wang¹, Tong Zhang¹

Affiliation

¹ State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , P.R. China.

PMID: 30296379
DOI: 10.1021/acsami.8b12981

Abstract

Achieving a novel structural construction and adopting appropriate catalyst materials are key to overcoming inherent limitations of gas sensors in terms of designing sensing layers. This work introduces NiO/NiCo₂O₄ truncated nanocages functionalized with PdO nanoparticles, which were proved to possess the ability of effective acetone detection. The device realized an enhanced acetone-sensing sensitivity, together with excellent selectivity and long-term stability. The sensing performance is far better than sensors based on NiO/NiCo₂O₄ solid nanocubes and NiO/NiCo₂O₄ truncated nanocages without PdO decorating, which is related to cooperative effects of the high specific surface area and efficient catalytic activity. The results provide promising metal-organic frameworks (MOFs)-derived material with the optimization of catalytic performance, demonstrating the remarkable potential for acetone sensors.

Keywords: MOFs; NiO/NiCo2O4; PdO catalyst; acetone sensor; nanocages.