Highly Sensitive Chemical Detection with Tunable Sensitivity and Selectivity from Ultrathin Platinum Nanowires

Mengning Ding; Yuan Liu; Gongming Wang; Zipeng Zhao; Anxiang Yin; Qiyuan He; Yu Huang; Xiangfeng Duan

doi:10.1002/smll.201602969

Highly Sensitive Chemical Detection with Tunable Sensitivity and Selectivity from Ultrathin Platinum Nanowires

Small. 2017 Feb;13(5). doi: 10.1002/smll.201602969. Epub 2016 Nov 15.

Authors

Mengning Ding^{1

2}, Yuan Liu¹, Gongming Wang^{2

3}, Zipeng Zhao¹, Anxiang Yin³, Qiyuan He³, Yu Huang^{1

2}, Xiangfeng Duan^{2

3}

Affiliations

¹ Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA.
² California NanoSystems Institute (CNSI), University of California, Los Angeles, Los Angeles, CA, 90095, USA.
³ Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA.

PMID: 27862908
DOI: 10.1002/smll.201602969

Abstract

Ultrathin platinum nanowires obtained from wet-synthesis with no strong binding ligands exhibit very high sensitivity toward hydrogen gas (two orders of magnitude increase compared with state-of-the-art devices). Their chemical sensitivity, selectivity, and other sensing characteristics can be rationally tailored through further surface engineering. A significantly reduced cross-sensitivity toward humidity is achieved, while the hydrogen sensitivity is preserved or even enhanced.

Keywords: gas sensors; surface chemistry; surface ligands; ultrathin metal nanowires.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.