Choi Sun-Woo, Jung Sung-Hyun, Park Jae Young, Kim Sang Sub
School of Materials Science and Engineering, Inha University, Incheon 402-751, Republic of Korea.
J Nanosci Nanotechnol. 2012 Feb;12(2):1526-9. doi: 10.1166/jnn.2012.4610.
Selectively-grown networked SnO2 nanowires were functionalized with Pt nanodots by the radiolysis process. NO2 sensing characteristics of Pt-functionalized SnO2 nanowires were compared with those of bare SnO2 nanowires. The results demonstrate that the Pt functionalization greatly enhances the sensitivity and response time in SnO2 nanowire-based gas sensors. The enhancement is likely to be associated with the spillover effect and/or easy dissociation of NO2 into more active chemical species by the catalytic effect of Pt.
通过辐射分解过程，用铂纳米点对选择性生长的网络化二氧化锡纳米线进行功能化处理。将铂功能化的二氧化锡纳米线的二氧化氮传感特性与裸二氧化锡纳米线的传感特性进行了比较。结果表明，铂功能化极大地提高了基于二氧化锡纳米线的气体传感器的灵敏度和响应时间。这种增强可能与溢出效应和/或铂的催化作用使二氧化氮更容易分解为更具活性的化学物质有关。
