Synthesis, Charaterization and Electrochemical Sensing Properties of PANI—Cobalt doped α-Fe[sub 2]O[sub 3] Nanocomposites

2011 ◽  
Author(s):  
R. Suresh ◽  
L. Vijayalakshmi ◽  
A. Stephen ◽  
V. Narayanan ◽  
Alka B. Garg ◽  
...  
Keyword(s):  
Electrochemical Sensing ◽  
Sensing Properties

scholarly journals Morphology–Dependent Electrochemical Sensing Properties of Iron Oxide–Graphene Oxide Nanohybrids for Dopamine and Uric Acid

Nanomaterials ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 835 ◽  
Author(s):  
Zhaotian Cai ◽  
Yabing Ye ◽  
Xuan Wan ◽  
Jun Liu ◽  
Shihui Yang ◽  
...  
Keyword(s):  
Uric Acid ◽  
Graphene Oxide ◽  
Iron Oxide ◽  
Electrocatalytic Activity ◽  
Electrochemical Impedance ◽  
Simultaneous Detection ◽  
Electrochemical Sensing ◽  
Electrochemical Performances ◽  
Hydrothermal Route ◽  
Sensing Properties

Various morphologies of iron oxide nanoparticles (Fe2O3 NPs), including cubic, thorhombic and discal shapes were synthesized by a facile meta-ion mediated hydrothermal route. To further improve the electrochemical sensing properties, discal Fe2O3 NPs with the highest electrocatalytic activity were coupled with graphene oxide (GO) nanosheets. The surface morphology, microstructures and electrochemical properties of the obtained Fe2O3 NPs and Fe2O3/GO nanohybrids were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques. As expected, the electrochemical performances were found to be highly related to morphology. The discal Fe2O3 NPs coupled with GO showed remarkable electrocatalytic activity toward the oxidation of dopamine (DA) and uric acid (UA), due to their excellent synergistic effect. The electrochemical responses of both DA and UA were linear to their concentrations in the ranges of 0.02–10 μM and 10–100 μM, with very low limits of detection (LOD) of 3.2 nM and 2.5 nM for DA and UA, respectively. Moreover, the d-Fe2O3/GO nanohybrids showed good selectivity and reproducibility. The proposed d-Fe2O3/GO/GCE realized the simultaneous detection of DA and UA in human serum and urine samples with satisfactory recoveries.

Hydrothermal synthesis and electrochemical sensing properties of copper vanadate nanocrystals with controlled morphologies

2017 ◽  
Vol 27 (5) ◽  
pp. 1105-1116 ◽  
Author(s):  
Gui-hong HAN ◽  
Shu-zhen YANG ◽  
Yan-fang HUANG ◽  
Jing YANG ◽  
Wen-cui CHAI ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Electrochemical Sensing ◽  
Sensing Properties ◽  
Copper Vanadate

Morphology-controlled electrochemical sensing properties of CuS crystals for tartrazine and sunset yellow

2019 ◽  
Vol 288 ◽  
pp. 552-563 ◽  
Author(s):  
Junhua Li ◽  
Mengqin Liu ◽  
Jianbo Jiang ◽  
Beibei Liu ◽  
Haixia Tong ◽  
...  
Keyword(s):  
Electrochemical Sensing ◽  
Sunset Yellow ◽  
Sensing Properties

Hydrothermal preparation and electrochemical sensing properties of TiO2–graphene nanocomposite

2011 ◽  
Vol 83 (1) ◽  
pp. 78-82 ◽  
Author(s):  
Yang Fan ◽  
Hai-Ting Lu ◽  
Jin-Hang Liu ◽  
Chun-Peng Yang ◽  
Qiang-Shan Jing ◽  
...  
Keyword(s):  
Electrochemical Sensing ◽  
Hydrothermal Preparation ◽  
Sensing Properties ◽  
Graphene Nanocomposite

Facile synthesis of cobalt doped hematite nanospheres: Magnetic and their electrochemical sensing properties

2012 ◽  
Vol 134 (2-3) ◽  
pp. 590-596 ◽  
Author(s):  
R. Suresh ◽  
R. Prabu ◽  
A. Vijayaraj ◽  
K. Giribabu ◽  
A. Stephen ◽  
...  
Keyword(s):  
Electrochemical Sensing ◽  
Facile Synthesis ◽  
Sensing Properties

Formation process of calcium vanadate nanorods and their electrochemical sensing properties

2012 ◽  
Vol 27 (18) ◽  
pp. 2391-2400 ◽  
Author(s):  
Lizhai Pei ◽  
Yinqiang Pei ◽  
Yikang Xie ◽  
Chuangang Fan ◽  
Diankai Li ◽  
...  
Keyword(s):  
Formation Process ◽  
Electrochemical Sensing ◽  
Sensing Properties ◽  
Image Position

Abstract

TEMPO-functionalized zinc phthalocyanine: synthesis, magnetic properties, and its utility for electrochemical sensing of ascorbic acid

2016 ◽  
Vol 45 (7) ◽  
pp. 3086-3092 ◽  
Author(s):  
Sibel Eken Korkut ◽  
Duygu Akyüz ◽  
Kemal Özdoğan ◽  
Yusuf Yerli ◽  
Atıf Koca ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Magnetic Properties ◽  
Electrochemical Sensing ◽  
Zinc Phthalocyanine ◽  
Sensing Properties

Zinc(ii) phthalocyanine (TEMPO-ZnPc), peripherally functionalized with 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) radicals is synthesized and its magneto structural and electrochemical sensing properties are investigated.

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