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Synthesis of Platinum and Tin Oxide Co‐functionalized Single‐walled Carbon Nanotubes (Pt/SnO 2 /SWNTs) and their Sensing Properties toward Carbon Monoxide
Author(s) -
Su Heng C.,
Myung Nosang V.
Publication year - 2019
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201800563
Subject(s) - materials science , carbon nanotube , platinum , tin oxide , carbon monoxide , electrochemistry , tin , detection limit , chemical engineering , nanotechnology , nanoparticle , carbon fibers , platinum nanoparticles , oxide , electrode , catalysis , chemistry , composite material , composite number , organic chemistry , metallurgy , chromatography , engineering
Abstract Pt and SnO 2 were co‐functionalized on single‐walled carbon nanotubes (SWNTs) assembled on microelectrodes by electrochemical deposition where Pt nanoparticle's morphology, size, and density were tuned by controlling the applied potential and time. The systematic study to obtain the optimum condition for Pt‐decorated SnO 2 /SWNTs (Pt/SnO 2 /SWNTs) were performed and also correlate with its CO sensing performance. Illumination‐dependent sensing performance was examined using red, green and UV LED as light sources at room temperature. Under UV illumination, the sensitivity of Pt/SnO 2 /SWNTs was enhanced to 2.1 %/ppm V of CO with the lower detection limit of 0.05 ppm V .