Electrochemical Determination of Nitrite and Iodate Based on Pt Nanoparticles Self-assembled on a Chitosan Modified Glassy Carbon Electrode

Li, Yongxin; Zhou, Yuan; Xian, Hongying; Wang, Lun; Huo, Jianqiang

doi:10.2116/analsci.27.1223

Cited by 15 publications

(3 citation statements)

References 44 publications

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“…Upon the addition of an aliquot of iodate, the Ru III /P-Au-NPs/GC electrode reaches 95% of the steady-state current in less than 3 s. The corresponding calibration plot shows the current response and the concentration of KIO 3 has a linear relationship in the concentration range from 9.90 Â 10 À8 to 1.89 Â 10 À3 M with a correlation coefficient of 0.998 (Fig. 8B), which is much wider than earlier reports [26,[31][32][33][34]. Meanwhile, 50-fold glucose, glutathione, formic acid, Cl -, NO 2 -, and Na + ions do not interfere with the detection of iodate at this potential (0.1 V), demonstrating good selectivity of Ru III /P-Au-NPs/GC electrode.…”

Section: Sensing Application Of P-au-npsmentioning

confidence: 51%

Immobilization and electrocatalysis of Ru(III) ions on phosphonate functionalized gold nanoparticles

Sun

Cai

et al. 2015

Electrochimica Acta

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Section: Sensing Application Of P-au-npsmentioning

confidence: 51%

Immobilization and electrocatalysis of Ru(III) ions on phosphonate functionalized gold nanoparticles

Sun

Cai

et al. 2015

Electrochimica Acta

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“…AuNP/AnTi electrodes were modified with AuNP-CH using two different methods according to the predescribed method in the literature with minimal modification. 30,31 In the first method, the electrodes were incubated into the AuNP-CH solution and after 15 min of waiting, they were removed and immersed in 0.1 M NaOH solution, after which they were washed with DI water and dried at room temperature. 30 Chitosan, which is an amine rich polysaccharide, has been used as an immobilization matrix to stabilize the metal nanoparticles due to its high metal affinity.…”

Section: Modification Of Anti Electrodes By Controlled Potential Coulmentioning

confidence: 99%

“…30,31 In the first method, the electrodes were incubated into the AuNP-CH solution and after 15 min of waiting, they were removed and immersed in 0.1 M NaOH solution, after which they were washed with DI water and dried at room temperature. 30 Chitosan, which is an amine rich polysaccharide, has been used as an immobilization matrix to stabilize the metal nanoparticles due to its high metal affinity. [32][33][34] Chitosan was adsorbed on the titanium surface by physical adsorption via electrostatic or van der Waals interactions between the positively charged amine groups of chitosan and oxide layer of AnTi electrode (TiO -).…”

Section: Modification Of Anti Electrodes By Controlled Potential Coulmentioning

confidence: 99%

Development of Titania Nanotube-based Electrochemical Immunosensor and Determination of Prostate Specific Antigen

et al. 2018

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Early diagnosis of cancer is the most important factor that increases the success of treatment. Therefore, the development of new diagnostic tools is a necessity. In this study, a new electrode surface was developed via modification of a disposable titanium electrode with anodic oxidation and coating of gold nanoparticle and chitosan. Titanium electrodes were anodized by several anodization parameters to obtain a nanoporous surface and characterized by scanning electron microscopy. Electrodes anodized in optimum conditions were modified with gold nanoparticles and chitosan for enhancing conductivity and functionalizing the surface of electrode, respectively. To detect prostate specific antigen (PSA), anti-PSA was bound onto the functional electrode surface. Modified electrodes were characterized with scanning electron microscopy and cyclic voltammetry and used for chronoamperometric detection of PSA. Limit of detection (LOD) of the designed electrode was found to be 7.8 ng mL for PSA in a linear range of 0 - 100 ng mL.

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One‐Step Electrodeposition of Polyallylamine‐Functionalized Gold Nanodendrites and Their Application in Sensing

Tan

Yang

et al. 2015

ChemPlusChem

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The three‐dimensional polyallylamine (PAH)‐functionalized gold nanodendrites (PAH‐3D‐Au‐NDs) were successfully synthesized through a simple, one‐step electrodeposition method. SEM, TEM, energy‐dispersive spectrum mapping, and X‐ray photoelectron spectroscopy measurements were used to characterize the morphology, structure, and composition of PAH‐3D‐Au‐NDs. The PAH‐3D‐Au‐NDs were then used as the functional interface to effectively immobilize the ruthenium(III) ion through coordination interactions between the ruthenium(III) ion and PAH. The obtained RuIII/PAH‐3D‐Au‐NDs/Au electrode showed excellent electrocatalytic activity towards iodate reduction. With the use of PAH‐3D‐Au‐NDs, the proposed iodate electrochemical sensor displayed a fast response (less than 3 s), wide linear range (4.99×10−8 to 8.50×10−4 M), and low detection limit (1.66×10−8 M).

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Electrochemical Determination of Nitrite and Iodate Based on Pt Nanoparticles Self-assembled on a Chitosan Modified Glassy Carbon Electrode

Cited by 15 publications

References 44 publications

Immobilization and electrocatalysis of Ru(III) ions on phosphonate functionalized gold nanoparticles

Immobilization and electrocatalysis of Ru(III) ions on phosphonate functionalized gold nanoparticles

Development of Titania Nanotube-based Electrochemical Immunosensor and Determination of Prostate Specific Antigen

One‐Step Electrodeposition of Polyallylamine‐Functionalized Gold Nanodendrites and Their Application in Sensing

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