Pyramid-shaped MMn2O4/rGO (M = Ni, Co) nanocomposites and their application in ammonia sensors
- Authors
- Marimuthu, G.; Bharathi, G.; Palanisamy, G.; Albaqami, Munirah D.; Karami, Abdulnasser Mahmoud; Mani, G.; Pazhanivel, T.
- Issue Date
- Jun-2023
- Publisher
- SPRINGER HEIDELBERG
- Keywords
- rGO; NiMn2O4; rGO nanocomposite; CoMn2O4; rGO nanocomposite; Ammonia sensor; Wet impregnation method
- Citation
- APPLIED NANOSCIENCE, v.13, no.6, pp 3819 - 3826
- Pages
- 8
- Journal Title
- APPLIED NANOSCIENCE
- Volume
- 13
- Number
- 6
- Start Page
- 3819
- End Page
- 3826
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/91761
- DOI
- 10.1007/s13204-022-02560-0
- ISSN
- 2190-5509
2190-5517
- Abstract
- Herein, the MMn2O4 and MMn2O4/rGO (M = Ni, Co) samples were synthesized using co-precipitation and wet impregnation methods. XRD analysis showed the high purity and good crystallinity of the synthesized powders. FESEM analysis revealed the formation of pyramid-like structures and a good intimate mixture with rGO in the nanocomposite samples. Gas sensors were fabricated with pure and nanocomposite structures for the sensing of ammonia gas. The CoMn2O4/rGO nanocomposite sample achieved a higher sensitivity (S = 3.5) with shorter response/recovery (140 s/83 s) behavior in room temperature at 100 ppm of NH3. The stability and selectivity of the CoMn2O4/rGO nanocomposite gas sensor were examined. The preferable sensing mechanism of CoMn2O4/rGO nanocomposite towards the detection of NH3 was discussed.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - ETC > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/91761)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.