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Updated: Feb 14, 2026

Scalable Syntheses of Graphene Oxide and Reduced Graphene Oxide using Cascade Design Oxidation and Highly Basic Reduction Reactions
Published on: July 3, 2025
Polymer Foam-Supported Chemically Reduced Graphene Oxide Conductive Networks for Gas Sensing
Jiajia Song1, Yanyan Wang1, Feng Zhang1
1College of Physics, Optoelectronics and Energy and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, People's Republic of China; Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province and Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, People's Republic of China.
Abstract:
In this work, gas sensors based on chemically reduced graphene oxide (rGO) foams were reported for NH3 detection. Polymer foams were used as scaffolds to support rGO, and the resultant soft sensing devices exhibited a high sensitivity, high selectivity, and rapid recovery for NH3 detection at room temperature. The sensor showed more than 0.90% and 3.67% resistance changes respectively, when it's exposed to 1 ppm and 50 ppm NH3. The graphene foam gas sensors (FGS) also showed excellent repeatability. Furthermore, the response of rGO foam gas sensor to NH3 was more than two times higher than that to methanol vapors diluted to 1% of the saturated vapor concentration. Above all, the unique features, such as simple preparation, low cost and energy consumption, as well as excellent sensing performance, endow the sensor a great potential for NH3 detection.
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