Shape-selective synthesis of NiO nanostructures for hydrazine oxidation as a nonenzymatic amperometric sensor
- Authors
- Vikraman, Dhanasekaran; Park, Hui Joon
- Issue Date
- Sep-2016
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- RSC ADVANCES, v.6, no.89, pp.86101 - 86107
- Indexed
- SCIE
SCOPUS
- Journal Title
- RSC ADVANCES
- Volume
- 6
- Number
- 89
- Start Page
- 86101
- End Page
- 86107
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/22183
- DOI
- 10.1039/c6ra12805j
- ISSN
- 2046-2069
- Abstract
- In this work, we demonstrate the shape-dependent electrocatalytic activity of NiO NPs towards hydrazine oxidation. For this purpose, NiO NPs, having pellet, rod, dot and cuboid-shapes, were synthesized using a variety of reducing agents such as sodium hydroxide (NaOH) with polyethylene glycol (PEG), NaOH without PEG, ammonia (NH3), and sodium carbonate (Na2CO3) via a simple and low cost sol-gel approach. Moreover, NiO-silica core-shell (NiO@SiO2) NPs were prepared using TEOS as a source of the porous silica. The morphological structures of these NPs were characterized by field emission-scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). From the X-ray diffraction (XRD) results, a face-centered cubic (fcc) NiO crystalline structure was confirmed and the estimated size of the crystalline NPs was in the range of 2.7-12.5 nm depending on the reducing agents utilized for the synthesis. Moreover, their characteristics were further investigated by Raman spectroscopy. From the cyclic voltammetry results, it was shown that the nano-pellet shape NiO exhibited the best electrocatalytic performance for hydrazine oxidation and stability, promising for fuel cell application.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 유기나노공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/22183)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.