Novel electrochemical sensor for mononitrotoluenes using silver oxide quantum dots
- Authors
- Bhanjana, Gaurav; Chaudhary, Ganga Ram; Dilbaghi, Neeraj; Chauhan, Moondeep; Kim, Ki-Hyun; Kumar, Sandeep
- Issue Date
- Jan-2019
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Endocrine disruptor; Sensing; Silver oxide; Nanoparticles; Electrochemical; Cyclic voltammetry
- Citation
- ELECTROCHIMICA ACTA, v.293, pp.283 - 289
- Indexed
- SCIE
SCOPUS
- Journal Title
- ELECTROCHIMICA ACTA
- Volume
- 293
- Start Page
- 283
- End Page
- 289
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2969
- DOI
- 10.1016/j.electacta.2018.10.042
- ISSN
- 0013-4686
- Abstract
- Mononitrotoluenes (MNTs) can cause methemoglobinemia, liver/kidney damage, and skin/eye/throat irritation. Monitoring of MNTs in real and laboratory samples is necessary to maintain levels below permissible limits. Herein, silver oxide quantum dots (Ag2O QDs) were synthesized using a chemical method and were well characterized using transmission electron microscopy (TEM), Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and UV-visible spectroscopy. The characterized QDs were coated on a gold (Au) electrode using a binder (Nafion). This modified electrode was evaluated and standardized for redox-based sensing against 2-nitrotoluene. Cyclic voltammetry (CV) was optimized for electrochemical determination of 2-nitrotoluene. The effects of various factors like scan rate, solution pH, analyte concentration, and possible interferants were also evaluated for sensing performance of 2-nitrotoluene. The fabricated sensor displayed a high sensitivity of 100 mu A cm(-2) ppm(-1) with a limit of detection of 4.3 ppm and a linear range of 5-40 ppm. The proposed technique was reliable for monitoring real as well as laboratory samples of 2-nitrotoluene.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 건설환경공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2969)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.