Synthesis of Ag@rGO/g-C3N4 Layered Structures and Their Application to Toxic Gas Sensors: Effect of Ag Nanoparticles
- Authors
- Qui Thanh Hoai Ta; Namgung, Gitae; Noh, Jin-Seo
- Issue Date
- Nov-2019
- Publisher
- KOREAN INST METALS MATERIALS
- Keywords
- Graphitic carbon nitride; Reduced graphene oxide; Silver nanoparticles; Hybrid nanostructures; Gas sensors
- Citation
- ELECTRONIC MATERIALS LETTERS, v.15, no.6, pp.750 - 759
- Journal Title
- ELECTRONIC MATERIALS LETTERS
- Volume
- 15
- Number
- 6
- Start Page
- 750
- End Page
- 759
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/18013
- DOI
- 10.1007/s13391-019-00175-2
- ISSN
- 1738-8090
- Abstract
- In this work, graphitic carbon nitride (g-C3N4) was synthesized by simple pyrolysis of melamine, and it was hybridized with reduced graphene oxide (rGO) and silver nanoparticles (AgNPs) using a stepwise solution method. AgNPs were randomly distributed on the surface of rGO/g-C3N4 layered hybrid structure, forming Ag@rGO/g-C3N4 composite. It was disclosed that the Ag@rGO/g-C3N4 composite responded to both oxidizing and reducing gases at room temperature, and its response was greatly enhanced from those of pristine rGO and rGO/g-C3N4. The room temperature responses of the composite were estimated at - 95% and 8% for 50 ppm of NO2 and NH3, respectively. The roles of structural components were discussed, and a gas-sensing mechanism was proposed based on the respective roles. In particular, AgNPs turned out to play an important role in the gas-sensing activity.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 바이오나노대학 > 나노물리학과 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.