Electrodeposited gold dendrites at reduced graphene oxide as an electrocatalyst for nitrite and glucose oxidation

Manivannan, Shanmugam; Kim, Kyu‐Won

doi:10.1016/j.jelechem.2016.06.009

Cited by 31 publications

(25 citation statements)

References 48 publications

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“…Compounds containing SO 3 2ions are used as preservatives in view of their antioxidant properties and as inhibitors of enzymatic and microbial activities in beverages, food, and pharmaceutical products [10]. The NO 2 ion is a typical inorganic pollutant and its sources include wastes from fertilizer and preservative industries and adulterants in food [11][12][13][14]. Therefore, it is important and desirable to design and develop a catalyst for the concurrent detection and determination of N 2 H 4 , SO 3 2-, and NO 2 present in food, water, biological fluids, etc.…”

Section: -mentioning

confidence: 99%

Concurrent Electrocatalysis and Sensing of Hydrazine and Sulfite and Nitrite Ions using Electrodeposited Gold Nanostructure-Modified Electrode

Seo¹,

Manivannan²,

Kang³

et al. 2017

J. Electrochem. Sci. Technol

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Concurrent electrocatalysis and sensing of hydrazine, sulfite ions, and nitrite ions in a mixture were studied using electrodes modified by electrodeposited Au nanostructures (NSs). The β-cyclodextrin-mixed silicate sol-gel composite was dropcasted on the electrode surface and nucleation guided by β-cyclodextrin occurred, followed by the electrodeposition of Au NSs. The additive, β-cyclodextrin, played an evident role as a structure-directing agent; thus, small raspberry-like Au NSs were obtained. The modified electrodes were characterized by surface characterization techniques and electrochemical methods. The Au NSs-modified electrodes effciently electrocatalyzed the oxidation of toxic molecules such as hydrazine and sulfite and nitrite ions even in the absence of any other electron transfer mediator or enzyme immobilization. Wellresolved oxidation peaks along with decreased overpotentials were noticed during the electrooxidation process. The fabricated Au nanostructured electrode clearly distinguished the electrooxidation peaks of each of the three analytes from their mixture.

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Section: -mentioning

confidence: 99%

Concurrent Electrocatalysis and Sensing of Hydrazine and Sulfite and Nitrite Ions using Electrodeposited Gold Nanostructure-Modified Electrode

Seo¹,

Manivannan²,

Kang³

et al. 2017

J. Electrochem. Sci. Technol

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“…Two different AuNPs-modified electrodes were prepared through minor revision of the literature [30]. (1) PTG-AuNPs electrode.…”

Section: Fabrication Of Series Aunps Electrodementioning

confidence: 99%

A Sandwich‐type Electrochemiluminescence Aptasensor for Thrombin Based on Functional Co‐polymer Electrode Using Ru(bpy)₃²⁺ Doped Nanocomposites as Signal‐amplifying Tags

Shan

Gong

et al. 2019

Electroanalysis

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Herein, a signal‐on sandwich‐type electrochemiluminescence (ECL) aptasensor for the detection of thrombin (TB) was proposed. The graphene (GR) doped thionine (TH) was electropolymerized synchronously on the bare glassy carbon electrode (GCE) to form co‐polymer (PTG) electrode. The gold nanoparticles (AuNPs) were decorated on the surface of the PTG by in‐situ electrodeposition, and the functional co‐polymer (PTG‐AuNPs) electrode was utilized as sensing interface. Then, TB binding aptamer I (TBA I) as capture probes were modified on the PTG‐AuNPs electrode to capture TB, and Ru(bpy)32+/silver nanoparticles doped silica core‐shell nanocomposites‐labeled TB binding aptamer II (RuAg/SiO2NPs@TBA II) were used as signal probes to further bind TB, resulting in a sandwich structure. With the assistant of silica shell and AgNPs, the enrichment and luminous efficiency of Ru(bpy)32+ were significantly improved. Under the synergy of PTG‐AuNPs and RuAg/SiO2NPs, the ECL signal was dramatically increased. The proposed ECL aptasensor displayed a wide linear range from 2 fM to 2 pM with the detection limit of 1 fM, which is comparable or better than that in reported ECL aptasensors for TB using Ru(bpy)32+ and its derivatives as the luminescent substance. The excellent sensitivity makes the proposed aptasensor a promising potential in pharmaceutical and clinical analysis.

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“…首先 [7,8] . Shanmugam 等 [9] [11] , 而绿色化学的一项基本原则是提倡使用水作为一种更安全、更环保的溶剂, 但是使用水作为反应介质对有机合成化学家来说是一个巨大的挑战, 因为有机化合物在水中的溶解度很低, 然而环糊精可以通过包合有机材料提高其在水中的溶解性. 基于这些研究, Dheer 等 [12] 研究了一种新型的 CuI(碘化亚铜)/β-CD 催化剂, 并首次用于水中区域选择性合成 5-碘-1,2,3-苯并三唑、2-…”

Section: 环糊精参与的纳米金催化有机反应unclassified

Transition Metal Catalyzed Organic Reaction Involving Cyclodextrin

Chen¹,

Gui²,

Duan³

et al. 2019

Chin. J. Org. Chem.

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Cyclodextrin is a kind of cyclic oligosaccharide which is composed of the D-pyran glucose units connected with the α-1,4-glycosidic bond. Cyclodextrin has the rigidly tapered cavity of hydrophobic inner and hydrophilic outer. Cyclodextrin has been attracted more and more attention from scientists since it was discovered, owning to its special space cavity of hydrophilic inner and hydrophilic outer. As an important industrial catalyst, transition metal catalyst can combine with the cyclodextrin system to simultaneously exert the catalytic properties of the metal and the molecular recognition and phase transfer of cyclodextrin, which greatly improves its catalytic performance. In this paper, the transition metal catalyzed organic reactions involving cyclodextrin are reviewed, and these reactions are described in terms of the metal valence from 0 to 4. Finally, the development and foreground of these co-catalyst systems involving metal and cyclodextrin are prospected. It is expected that the catalytic system will have a wider application in the future, and a more efficient and selective catalytic system will be continuously developed.

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Electrodeposited gold dendrites at reduced graphene oxide as an electrocatalyst for nitrite and glucose oxidation

Cited by 31 publications

References 48 publications

Concurrent Electrocatalysis and Sensing of Hydrazine and Sulfite and Nitrite Ions using Electrodeposited Gold Nanostructure-Modified Electrode

Concurrent Electrocatalysis and Sensing of Hydrazine and Sulfite and Nitrite Ions using Electrodeposited Gold Nanostructure-Modified Electrode

A Sandwich‐type Electrochemiluminescence Aptasensor for Thrombin Based on Functional Co‐polymer Electrode Using Ru(bpy)₃²⁺ Doped Nanocomposites as Signal‐amplifying Tags

Transition Metal Catalyzed Organic Reaction Involving Cyclodextrin

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Electrodeposited gold dendrites at reduced graphene oxide as an electrocatalyst for nitrite and glucose oxidation

Cited by 31 publications

References 48 publications

Concurrent Electrocatalysis and Sensing of Hydrazine and Sulfite and Nitrite Ions using Electrodeposited Gold Nanostructure-Modified Electrode

Concurrent Electrocatalysis and Sensing of Hydrazine and Sulfite and Nitrite Ions using Electrodeposited Gold Nanostructure-Modified Electrode

A Sandwich‐type Electrochemiluminescence Aptasensor for Thrombin Based on Functional Co‐polymer Electrode Using Ru(bpy)32+ Doped Nanocomposites as Signal‐amplifying Tags

Transition Metal Catalyzed Organic Reaction Involving Cyclodextrin

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A Sandwich‐type Electrochemiluminescence Aptasensor for Thrombin Based on Functional Co‐polymer Electrode Using Ru(bpy)₃²⁺ Doped Nanocomposites as Signal‐amplifying Tags