Hydrogen bubble dynamic template synthesis of porous gold for nonenzymatic electrochemical detection of glucose

Li, Ying; Song, Yan‐Yan; Yang, Chen; Xia, Xing‐Hua

doi:10.1016/j.elecom.2006.11.035

Cited by 490 publications

(171 citation statements)

References 35 publications

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“…Research findings demonstrate that enzymatic catalysts exhibit high activity and excellent selectivity, but the unstable operating environment and fragile stability greatly hinder their practical applications [5,6]. To overcome these drawbacks, non-enzymatic catalysts (such as precious metal nanoparticles or alloys [7][8][9][10], composite materials [11,12], polymers [13,14] and transition metal oxides [15][16][17][18]) as enzyme mimics show higher performance than enzymatic ones. Among these non-enzymatic catalysts, transition metal oxides play important roles due to their high intrinsic catalytic performances, low cost, and environmental friendliness.…”

Section: Introductionmentioning

confidence: 99%

Rectangular flake-like mesoporous NiCo2O4 as enzyme mimic for glucose biosensing and biofuel cell

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Rectangular flake-like mesoporous NiCo2O4 as enzyme mimic for glucose biosensing and biofuel cell

et al. 2017

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“…The catalytic property of the hollow urchin-like AuNPs was further evaluated by exploiting the NPs in the electrocatalytic oxidation of glucose. The CV curves of the glucose oxidation using gold as catalyst are documented in previous reports [33,35,36]. Typically, using the spherical AuNPs electrode (Fig.…”

Section: Resultsmentioning

confidence: 82%

Facile synthesis of hollow urchin-like gold nanoparticles and their catalytic activity

et al. 2012

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The galvanic replacement reaction between Ag nanoparticles (NPs) and HAuCl 4 followed by addition of ascorbic acid led to the formation of AuNPs sharing both urchin-like and hollow structures. The AgNPs took as sacrificial templates to guide the hollow structure and the intermediates provided rough surface and active sites for the further deposition of AuNPs, which originated from the reduction of excess HAuCl 4 by ascorbic acid. These unique structured AuNPs presented excellent optical properties and great advantages in catalysis applications.

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“…It was proven that combining nanostructures of Pt and of other metals further reduces poisoning issues and further favors the detection of small molecules at even lower potential than using monometallic Pt nanomaterials [48]. The improvement in electrocatalysis by coupling Pt with other metals could be due to the higher/lower electronegativity of the second metal that could cause an increase/decrease in the amount of charge being transferred from Pt to the second metal [40]. Moreover, a particular arrangement of surface atoms of the two metals suppresses adsorbed poisonous species on surface-active sites of Pt.…”

Section: Effect Of the Potential On The Sensitivitymentioning

confidence: 99%

“…According to the literature, AuPt hybrid nanostructures have become more attractive thanks to the synergistic catalytic effect and an excellent resistance to poisoning [34][35][36][37][38][39]. Different strategies to realize AuPt hybrid structures are reported in literature such as the dealloying method that involves multiple steps [40,41].…”

Section: Introductionmentioning

confidence: 99%

A bimetallic nanocoral Au decorated with Pt nanoflowers (bio)sensor for H2O2 detection at low potential

Sanzò

Taurino

Puppo

et al. 2017

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a b s t r a c tIn this work, we have developed for the first time a method to make novel gold and platinum hybrid bimetallic nanostructures differing in shape and size. Au-Pt nanostructures were prepared by electrodeposition in two simple steps. The first step consists of the electrodeposition of nanocoral Au onto a gold substrate using hydrogen as a dynamic template in an ammonium chloride solution. After that, the Pt nanostructures were deposited onto the nanocoral Au organized in pores. Using Pt (II) and Pt (IV), we realized nanocoral Au decorated with Pt nanospheres and nanocoral Au decorated with Pt nanoflowers, respectively. The bimetallic nanostructures showed better capability to electrochemically oxidize hydrogen peroxide compared with nanocoral Au. Moreover, Au-Pt nanostructures were able to lower the potential of detection and a higher performance was obtained at a low applied potential. Then, glucose oxidase was immobilized onto the bimetallic Au-Pt nanostructure using cross-linking with glutaraldehyde. The biosensor was characterized by chronoamperometry at +0.15 V vs. Ag pseudo-reference electrode (PRE) and showed good analytical performances with a linear range from 0.01 to 2.00 mM and a sensitivity of 33.66 mA/mM cm 2 . The good value of K m app (2.28 mM) demonstrates that the hybrid nanostructure is a favorable environment for the enzyme. Moreover, the low working potential can minimize the interference from ascorbic acid and uric acid as well as reducing power consumption to effect sensing. The simple procedure to realize this nanostructure and to immobilize enzymes, as well as the analytical performances of the resulting devices, encourage the use of this technology for the development of biosensors for clinical analysis.

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Hydrogen bubble dynamic template synthesis of porous gold for nonenzymatic electrochemical detection of glucose

Cited by 490 publications

References 35 publications

Rectangular flake-like mesoporous NiCo2O4 as enzyme mimic for glucose biosensing and biofuel cell

Rectangular flake-like mesoporous NiCo2O4 as enzyme mimic for glucose biosensing and biofuel cell

Facile synthesis of hollow urchin-like gold nanoparticles and their catalytic activity

A bimetallic nanocoral Au decorated with Pt nanoflowers (bio)sensor for H2O2 detection at low potential

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