Cobalt hydroxide nanoparticles modified glassy carbon electrode as a biosensor for electrooxidation and determination of some amino acids

Hasanzadeh, Mohammad; Karim‐Nezhad, Ghasem; Shadjou, Nasrin; Hajjizadeh, M.; Khalilzadeh, Balal; Saghatforoush, Lotfali; Abnosi, Mohammad Hussein; Babaei, Ali; Ershad, Sohrab

doi:10.1016/j.ab.2009.03.024

Cited by 58 publications

(22 citation statements)

References 47 publications

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“…In addition, cobalt hydroxide films can be used as electrocatalytic materials for the oxidation of methanol, hydroquinone, and amino acids [34][35][36]. Meanwhile, little attention has been paid to the catalytic activity of cobalt hydroxide towards the ORR.…”

Section: Introductionmentioning

confidence: 98%

A study of the catalysis of cobalt hydroxide towards the oxygen reduction in alkaline media

Wang

Zhang

Liu

2010

Journal of Power Sources

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Section: Introductionmentioning

confidence: 98%

A study of the catalysis of cobalt hydroxide towards the oxygen reduction in alkaline media

Wang

Zhang

Liu

2010

Journal of Power Sources

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“…The results obtained by this modified electrode are compared in Table with previously reported modified electrode . Ag/PANI/GC is different from other reported electrodes such as: simplicity and low cost construction, LOD, selectivity, and linear range.…”

Section: Resultsmentioning

confidence: 77%

Ag/polyaniline nanocomposites: Synthesize, characterization, and application to the detection of dopamine and tyrosine

Massoumi

Fathalipour

Massoudi

et al. 2013

J of Applied Polymer Sci

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In this research, Ag/Polyaniline (PANI) nanocomposites were synthesized successfully by the chemical oxidative polymerization of aniline in the presence of 4-aminothiophenol (4-ATP) capped colloidal Ag nanoparticles (NPs). First, Ag colloidal NPs were prepared by borohydride reduction of AgNO 3 in the presence of 4-ATP as a stabilizer. Then, polymerization of aniline in the presence of Ag NPs was carried out by ammonium persulfate as an oxidant at room temperature. TEM, SEM, XRD, FTIR, EDX, TGA, and UV-vis studies were done for the morphological, structural, thermal, and optical characterization of the Ag/PANI nanocomposite. Furthermore, Ag/PANI nanocomposites were immobilized on the surface of a glassy carbon electrode (GCE) and electroactivity behavior was investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The obtained Ag/PANI modified GCE showed high catalytic activity for the oxidation of dopamine (DA) and tyrosine (Tyr). The peak current of differential pulse voltammograms of DA and Tyr increased linearly with their concentration in the ranges of 2.17-5.74 lM Tyr and 18.5-72.2 lM DA. The detection limits for DA and Tyr were 0.002 and 0.009 lM, respectively.

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“…The transfer coefficient is proportional with the Tafel slope as shown in Eq. (4). Based on the slope in Figure 7, using n＝4 the transfer coefficient, α, was calculated to be 0.1.…”

Section: Determination Of the Transfer Coefficientmentioning

confidence: 99%

“…The purpose of the present work (at continuing our study on the development and application of the modified electrodes [4][5][6][7][8][9][10] ) is the detailed investigation of oxygen reduction reaction on a rotating Ag/GC disk electrode in acidic solution aiming at computing the kinetic parameters and finding an appropriate mechanism of ORR.…”

Section: Introductionmentioning

confidence: 99%

Oxygen Reduction Reaction on a Rotating Ag/GC Disk Electrode in Acidic Solution

et al. 2010

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Finding an appropriate mechanism of oxygen reduction reaction, without having kinetic parameters and intermediate species at hand, is an impossible task. In view of the fact that this reaction is one of the important reactions, it was tried to overcome this problem through computing the kinetic parameters by means of Ag/GC rotating disc electrode in an acidic solution. Using this electrode, two values were obtained for electron transfer coefficient and reaction order was calculated through relative equations. Based on this information, an ECE (electrochemical chemical electrochemical) mechanism has been proposed.

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Cobalt hydroxide nanoparticles modified glassy carbon electrode as a biosensor for electrooxidation and determination of some amino acids

Cited by 58 publications

References 47 publications

A study of the catalysis of cobalt hydroxide towards the oxygen reduction in alkaline media

A study of the catalysis of cobalt hydroxide towards the oxygen reduction in alkaline media

Ag/polyaniline nanocomposites: Synthesize, characterization, and application to the detection of dopamine and tyrosine

Oxygen Reduction Reaction on a Rotating Ag/GC Disk Electrode in Acidic Solution

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