Graphene oxide scrolls on hydrophobic substrates fabricated by molecular combing and their application in gas sensing

• Main Authors: Li, Hai, Wu, Jumiati, Qi, Xiaoying, He, Qiyuan, Liusman, Cipto, Lu, Gang, Zhou, Xiaozhu, Zhang, Hua
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering::Materials::Nanostructured materials
• Online Access: https://hdl.handle.net/10356/102416; http://hdl.handle.net/10220/19031
• Institution: Nanyang Technological University

Well-aligned graphene oxide (GO) scrolls are prepared through the controlled folding/scrolling of single-layer GO sheets using molecular combing on hydrophobic substrates, such as aged gold substrate, polydimethylsiloxane film, poly(L-lactic acid) film, and octadecyltrimethoxysilane-modified silicon dioxide. As a proof of concept, the gas sensor fabricated with a single reduced GO scroll is used to detect NO2 gas with a concentration as low as 0.4 ppm.