title: Three-Dimensional Crumpled Graphene-Based Nanosheets with Ultrahigh NO2Gas Sensibility.
abstract: It is well-established that the structures dominate the properties. Inspired by the highly contorted and crumpled maxilloturbinate inside dog nose, herein an artificial nanostructure, i.e., 3D crumpled graphene-based nanosheets, is reported with the simple fabrication, detailed characterizations, and efficient gas-sensing applications. A facile supramolecular noncovalent assembly is introduced to modify graphene with functional molecules, followed with a lyophilization process to massively transform 2D plane graphene-based nanosheets to 3D crumpled structure. The detailed morphological characterizations reveal that the bioinspired nanosheets exhibit full consistency with maxilloturbinate. The fabricated 3D crumpled graphene-based sensors exhibit ultrahigh response (Ra/Rg= 3.8) toward 10 ppm of NO2, which is mainly attributed to the specific maxilloturbinate-mimic structure. The sensors also exhibit excellent selectivity and sensing linearity, reliable repeatability, and stability. Interestingly, it is observed that only 4 mg of graphene oxide (GO) raw materials can produce more than 1000 gas sensors, which provides a new insight for developing novel 3D biomimetic materials in large-scale gas sensor production.
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University , Beijing 100191, P. R. China.
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University , Beijing 100191, P. R. China.
authors.forename: Jinrong
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Chemistry, Faculty of Science and Arts and Promising Centre for Sensors and Electronic Devices, Najran University , Najran 11001, Kingdom of Saudi Arabia.
authors.forename: Ahmad
authors.initials: A
authors.lastname: Umar
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University , Beijing 100191, P. R. China.
authors.forename: Yao
authors.identifier: http://orcid.org/0000-0002-0713-5018
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University , Guangzhou 510006, P. R. China.
authors.forename: Hao
authors.initials: H
authors.lastname: Li
authors.affiliation: Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University , Guangzhou 510006, P. R. China.|Shenzhen Guohua Optoelectronics Tech. Co. Ltd. , Shenzhen 518110, P. R. China.|Academy of Shenzhen Guohua Optoelectronics , Shenzhen 518110, P. R. China.
authors.forename: Guofu
authors.initials: G
authors.lastname: Zhou
keywords: NO2 sensors; crumpled graphene nanosheets; dog noses; lyophilization; supramolecular modification