Three-Dimensional Graphene-Based Foams with “Greater Electron Transferring Areas” Deriving High Gas Sensitivity

Zhuo Chen; Jinrong Wang; Nengjie Cao; Yao Wang; Hao Li; Nicolaas Frans de Rooij; Ahmad Umar; Yancong Feng; Paddy J. French; Guofu Zhou

doi:10.1021/acsanm.1c02759

Three-Dimensional Graphene-Based Foams with “Greater Electron Transferring Areas” Deriving High Gas Sensitivity

Zhuo Chen, Jinrong Wang, Nengjie Cao, Yao Wang^*, Hao Li, Nicolaas Frans de Rooij, Ahmad Umar, Yancong Feng^*, Paddy J. French, Guofu Zhou

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Graphene foams are promising three-dimensional (3D) architectures with the combination of the intrinsic nature of graphene and unique cellular structures for various realms. Herein, a facile technique is developed by combining supramolecular assembly with lyophilization to functionalize graphene with donor−π-acceptor (D−π-A) molecules and then massively transform the two-dimensional (2D) plane nanosheets into 3D foams. The as-prepared gas sensors work at room temperature (RT) and reveal comprehensive gas sensing performance with an ultrahigh response (R_a/R_g = 3.2, 10 ppm), excellent selectivity, and reliable repeatability toward NO₂. Notably, a gas sensing enhancement mechanism with density functional theory (DFT) calculations is proposed to unravel the synergetic effect of the “Greater Electron Transferring Area” and the specific 3D foam structure for the enhancement of charge transfer and NO₂ adsorption. The combination of supramolecular assembly and the lyophilization technique provides a strategy to prepare 3D architectural graphene-based materials for high-performance gas sensors and chemical trace detectors.

Original language	English (US)
Pages (from-to)	13234-13245
Number of pages	12
Journal	ACS Applied Nano Materials
Volume	4
Issue number	12
DOIs	https://doi.org/10.1021/acsanm.1c02759
State	Published - Dec 24 2021

Bibliographical note

Funding Information:
This work was supported by the National Natural Science Foundation of China (Grant Nos. 51973070 and 51773069), Science and Technology Program of Guangzhou (No. 2019050001), Innovative Team Project of Education Bureau of Guangdong Province, Guangdong Basic and Applied Basic Research Foundation (No. 2021A1515012420), Startup Foundation from SCNU, Guangdong Recruitment Program of Foreign Experts (191900016), and Guangdong Provincial Key Laboratory of Optical Information Materials and Technology (No. 2017B030301007).

Publisher Copyright:
© 2021 American Chemical Society

Keywords

charge transfer
gas sensors
graphene foams
lyophilization
supramolecular assembly

ASJC Scopus subject areas

General Materials Science

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10.1021/acsanm.1c02759

Cite this

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title = "Three-Dimensional Graphene-Based Foams with “Greater Electron Transferring Areas” Deriving High Gas Sensitivity",

abstract = "Graphene foams are promising three-dimensional (3D) architectures with the combination of the intrinsic nature of graphene and unique cellular structures for various realms. Herein, a facile technique is developed by combining supramolecular assembly with lyophilization to functionalize graphene with donor−π-acceptor (D−π-A) molecules and then massively transform the two-dimensional (2D) plane nanosheets into 3D foams. The as-prepared gas sensors work at room temperature (RT) and reveal comprehensive gas sensing performance with an ultrahigh response (Ra/Rg = 3.2, 10 ppm), excellent selectivity, and reliable repeatability toward NO2. Notably, a gas sensing enhancement mechanism with density functional theory (DFT) calculations is proposed to unravel the synergetic effect of the “Greater Electron Transferring Area” and the specific 3D foam structure for the enhancement of charge transfer and NO2 adsorption. The combination of supramolecular assembly and the lyophilization technique provides a strategy to prepare 3D architectural graphene-based materials for high-performance gas sensors and chemical trace detectors.",

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author = "Zhuo Chen and Jinrong Wang and Nengjie Cao and Yao Wang and Hao Li and Rooij, {Nicolaas Frans de} and Ahmad Umar and Yancong Feng and French, {Paddy J.} and Guofu Zhou",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (Grant Nos. 51973070 and 51773069), Science and Technology Program of Guangzhou (No. 2019050001), Innovative Team Project of Education Bureau of Guangdong Province, Guangdong Basic and Applied Basic Research Foundation (No. 2021A1515012420), Startup Foundation from SCNU, Guangdong Recruitment Program of Foreign Experts (191900016), and Guangdong Provincial Key Laboratory of Optical Information Materials and Technology (No. 2017B030301007). Publisher Copyright: {\textcopyright} 2021 American Chemical Society",

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AU - Li, Hao

AU - Rooij, Nicolaas Frans de

AU - Umar, Ahmad

AU - Feng, Yancong

AU - French, Paddy J.

AU - Zhou, Guofu

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PY - 2021/12/24

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N2 - Graphene foams are promising three-dimensional (3D) architectures with the combination of the intrinsic nature of graphene and unique cellular structures for various realms. Herein, a facile technique is developed by combining supramolecular assembly with lyophilization to functionalize graphene with donor−π-acceptor (D−π-A) molecules and then massively transform the two-dimensional (2D) plane nanosheets into 3D foams. The as-prepared gas sensors work at room temperature (RT) and reveal comprehensive gas sensing performance with an ultrahigh response (Ra/Rg = 3.2, 10 ppm), excellent selectivity, and reliable repeatability toward NO2. Notably, a gas sensing enhancement mechanism with density functional theory (DFT) calculations is proposed to unravel the synergetic effect of the “Greater Electron Transferring Area” and the specific 3D foam structure for the enhancement of charge transfer and NO2 adsorption. The combination of supramolecular assembly and the lyophilization technique provides a strategy to prepare 3D architectural graphene-based materials for high-performance gas sensors and chemical trace detectors.

AB - Graphene foams are promising three-dimensional (3D) architectures with the combination of the intrinsic nature of graphene and unique cellular structures for various realms. Herein, a facile technique is developed by combining supramolecular assembly with lyophilization to functionalize graphene with donor−π-acceptor (D−π-A) molecules and then massively transform the two-dimensional (2D) plane nanosheets into 3D foams. The as-prepared gas sensors work at room temperature (RT) and reveal comprehensive gas sensing performance with an ultrahigh response (Ra/Rg = 3.2, 10 ppm), excellent selectivity, and reliable repeatability toward NO2. Notably, a gas sensing enhancement mechanism with density functional theory (DFT) calculations is proposed to unravel the synergetic effect of the “Greater Electron Transferring Area” and the specific 3D foam structure for the enhancement of charge transfer and NO2 adsorption. The combination of supramolecular assembly and the lyophilization technique provides a strategy to prepare 3D architectural graphene-based materials for high-performance gas sensors and chemical trace detectors.

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Three-Dimensional Graphene-Based Foams with “Greater Electron Transferring Areas” Deriving High Gas Sensitivity

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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