One-Step Fabrication of Pyranine Modified- Reduced Graphene Oxide with Ultrafast and Ultrahigh Humidity Response

Zhuo Chen; Yao Wang; Ying Shang; Ahmad Umar; Peng Xie; Qi Qi; Guofu Zhou

doi:10.1038/s41598-017-02983-8

Scientific Reports (Jun 2017)

One-Step Fabrication of Pyranine Modified- Reduced Graphene Oxide with Ultrafast and Ultrahigh Humidity Response

Zhuo Chen,
Yao Wang,
Ying Shang,
Ahmad Umar,
Peng Xie,
Qi Qi,
Guofu Zhou

Affiliations

Zhuo Chen: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University
Yao Wang: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University
Ying Shang: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University
Ahmad Umar: Department of Chemistry, Faculty of Science and Arts and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University
Peng Xie: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University
Qi Qi: Gas and Humidity Sensing Department, Beijing Elite Tech Co.
Guofu Zhou: Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University

DOI: https://doi.org/10.1038/s41598-017-02983-8
Journal volume & issue: Vol. 7, no. 1
pp. 1 – 9

Abstract

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Abstract A facile one-step supramolecular assembly method is adopted to modify reduced graphene oxide (rGO) with functional organic molecule pyranine for achieving comprehensive humidity sensing performance. The fabricated humidity sensor based on pyranine modified-reduced graphene oxide (Pyr-rGO) exhibits excellent sensing performance with ultrafast (<2 s) and ultrahigh response of IL/IH = 6000 as relative humidity (RH) consecutively changes between 11% and 95%; small hysteresis of 8% RH; reliable repeatability and stability. In addition, a detailed mechanism analysis is performed to investigate the difference in water adsorption and ions transfer under various RH levels. Notably, the one-step supramolecular assembly method to prepare Pyr-rGO provides a new insight into developing novel functional humidity sensing materials with enhanced device performance.

Published in Scientific Reports

ISSN: 2045-2322 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Medicine; Science
Website: https://www.nature.com/srep/

About the journal