High sensitivity gas detection using a macroscopic three-dimensional graphene foam network.

Scientific Reports
Fazel YavariNikhil Koratkar

Abstract

Nanostructures are known to be exquisitely sensitive to the chemical environment and offer ultra-high sensitivity for gas-sensing. However, the fabrication and operation of devices that use individual nanostructures for sensing is complex, expensive and suffers from poor reliability due to contamination and large variability from sample-to-sample. By contrast, conventional solid-state and conducting-polymer sensors offer excellent reliability but suffer from reduced sensitivity at room-temperature. Here we report a macro graphene foam-like three-dimensional network which combines the best of both worlds. The walls of the foam are comprised of few-layer graphene sheets resulting in high sensitivity; we demonstrate parts-per-million level detection of NH(3) and NO(2) in air at room-temperature. Further, the foam is a mechanically robust and flexible macro-scale network that is easy to contact (without Lithography) and can rival the durability and affordability of traditional sensors. Moreover, Joule-heating expels chemisorbed molecules from the foam's surface leading to fully-reversible and low-power operation.

References

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Citations

Dec 23, 2015·ACS Applied Materials & Interfaces·Sun Sang KwonWon Il Park
Apr 4, 2015·ACS Applied Materials & Interfaces·Soojeong LeeYoungkwan Lee
Oct 31, 2015·Analytica Chimica Acta·Taher Alizadeh, Farzaneh Ahmadian
Jul 15, 2015·ACS Applied Materials & Interfaces·Byungjin ChoMyung Gwan Hahm
May 10, 2016·Journal of the American Chemical Society·Liurong ShiZhongfan Liu
Jul 13, 2016·ACS Nano·Meng WangXiangfeng Duan
Mar 17, 2017·ACS Applied Materials & Interfaces·Zhuo ChenGuofu Zhou
Jan 28, 2015·Scientific Reports·Byungjin ChoDong-Ho Kim
Jan 23, 2016·Chemical Communications : Chem Comm·X ZhuJ Wu
Apr 15, 2016·Nanoscale·Sungwoo ChunWanjun Park
Feb 8, 2018·Chemical Society Reviews·Bocheng QiuJinlong Zhang
Jul 28, 2016·Chemical Society Reviews·Khurram ShehzadXiangfeng Duan
Jun 18, 2017·Angewandte Chemie·Shaohua JiangAndreas Greiner
Dec 5, 2017·Nanoscale·Xiaoling ZangMianqi Xue
Jun 12, 2018·Chemical Society Reviews·Yoav Y BrozaHossam Haick
Jun 26, 2018·Chemical Society Reviews·Cosimo AnichiniPaolo Samorì
May 31, 2018·Advanced Materials·Duy Xuan LuongJames M Tour
Mar 29, 2014·Advanced Materials·Cameron J ShearerDominik Eder
Aug 30, 2012·Advanced Materials·Nathan O WeissXiangfeng Duan
Aug 23, 2012·Small·Eklavya SinghNikhil Koratkar
Jan 1, 2014·Small·Jing ZhangLiangti Qu

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