Ammonia Gas Sensing Behavior of Hybridization between Reduced Graphene Oxide and Gold Nanoparticles
Joint Authors
Tran, Quang Trung
Pham, Hoai Phuong
Nguyen, Hoang Hung
Hoa, Huynh Tran My
Lee, Kang Jea
Doan, Tuan Anh
Nguyen, Tran Quang
Cuong, Tran Viet
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-08-28
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Stack and composite are the two ways of hybridization between gold nanoparticles (AuNPs) and reduced graphene oxide (rGO) which have been fabricated and tested the ability to detect NH3 gas at room temperature.
The device based on the rGO-AuNP composite structure exhibited the highest response and the fastest response and recovery time compared to stack and bare rGO.
The red shift of a resonant peak in the absorption spectra and the negative shift in the binding energy of 4f5/2 peak indicated that the remarkable NH3 gas-sensing properties of this composite are mainly attributed to a chemical bonding formed between AuNPs and rGO at the defective sites.
This type of interaction facilitates the electron transfer from the defect states to the AuNP surface wherein it easily reacts with the oxygen molecules in the atmosphere to create oxygen absorbents.
Consequently, NH3 not only reacts with sp3-hybridized atoms but also reacts primarily with oxygen absorbents on the surface of AuNPs, resulting in a better sensing behavior of composite samples.
American Psychological Association (APA)
Hoa, Huynh Tran My& Lee, Kang Jea& Pham, Hoai Phuong& Doan, Tuan Anh& Nguyen, Hoang Hung& Nguyen, Tran Quang…[et al.]. 2020. Ammonia Gas Sensing Behavior of Hybridization between Reduced Graphene Oxide and Gold Nanoparticles. Journal of Nanomaterials،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1188559
Modern Language Association (MLA)
Hoa, Huynh Tran My…[et al.]. Ammonia Gas Sensing Behavior of Hybridization between Reduced Graphene Oxide and Gold Nanoparticles. Journal of Nanomaterials No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1188559
American Medical Association (AMA)
Hoa, Huynh Tran My& Lee, Kang Jea& Pham, Hoai Phuong& Doan, Tuan Anh& Nguyen, Hoang Hung& Nguyen, Tran Quang…[et al.]. Ammonia Gas Sensing Behavior of Hybridization between Reduced Graphene Oxide and Gold Nanoparticles. Journal of Nanomaterials. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1188559
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1188559