Glass-Fabric Reinforced Ag Nanowire/Siloxane Composite Heater Substrate: Sub-10 nm Metal@Metal Oxide Nanosheet for Sensitive Flexible Sensing Platform

被引：24

作者：

Jang, Ji-Soo ^{[1
,2
]}

Lim, Young-Woo ^{[1
]}

Kim, Dong-Ha ^{[1
,2
]}

Lee, Daewon ^{[1
,3
]}

Koo, Won-Tae ^{[1
,2
]}

Lee, Hyunhwan ^{[1
]}

Bae, Byeong-Soo ^{[1
]}

Kim, Il-Doo ^{[1
,2
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, 291 Daehak Ro, Daejeon 305701, South Korea

[2] Korea Adv Inst Sci & Technol, Adv Nanosensor Res Ctr, KI Nanocentury, 291 Daehak Ro, Daejeon 34141, South Korea

[3] Korea Res Inst Chem Technol, Carbon Resources Inst, 141 Gajeong Ro, Daejeon 34114, South Korea

来源：

SMALL | 2018年 / 14卷 / 44期

基金：

新加坡国家研究基金会;

关键词：

Ag nanowires; flexible gas sensor; heater; hybrimer; nanosheets; FILM; CATALYSTS; NETWORKS;

D O I：

10.1002/smll.201802260

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The development of flexible chemiresistors is imperative for real-time monitoring of air quality and/or human physical conditions without space constraints. However, critical challenges such as poor sensing characteristics, vulnerability under toxic chemicals, and weak reliability hinder their practical use. In this work, for the first time, an ultrasensitive flexible sensing platform is reported by assembling Pt loaded thin-layered (approximate to 10 nm) SnO2 nanosheets (Pt-SnO2 NSs) based 2D sensing layers on Ag nanowires embedded glass-fabric reinforced vinyl-phenyl siloxane hybrid composite substrate (AgNW-GFRVPH film) as a heater. The thermally stable AgNW-GFRVPH film based heater is fabricated by free radical polymerization of vinyl groups in vinyl-phenyl oligosiloxane and phenyltris(dimethylvinylsiloxy ) silane with Ag NW and glass-fabric, showing outstanding heat generation (approximate to 200 degrees C), high dimensional stability (13 ppm degrees C-1 ), and good thermal stability (approximate to 350 degrees C). The Pt-SnO2 NSs, which are synthesized by calcination of Sn precursor coated graphene oxide (GO) sheets and subsequent Pt functionalization, exhibit high mechanical flexibility and superior response (R-air/R-gas= 4.84) to 1 ppm level dimethyl sulfide. Taking these advantages, GO-templated oxide NSs combined with a highly stable AgNW-GFRVPH film heater exhibits the best dimethyl sulfide sensing performance compared to state-of-the-art flexible chemiresistors, enabling them as a superior flexible gas sensing platform.

引用

页数：10