Electrocatalytic reduction of hydrogen peroxide by silver particles patterned on single-walled carbon nanotubes

Bui, Minh Phuong Ngoc; Pham, Xuan‐Hung; Han, Kwi Nam; Li, Cheng Ai; Kim, Yong Shin; Seong, Gi Hun

doi:10.1016/j.snb.2010.06.019

Cited by 93 publications

(32 citation statements)

References 46 publications

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“…So far, many methods have been developed for detection of H 2 O 2 concentration, including titrimetry [7], chromatography [8], spectrophotometry [9], and electrochemical method [10]. Among them, the electrochemical method has received more attention due to its high sensitivity, low cost, convenient operation, and fast response [11,12]. Until now, most studies on this subject have focused on enzyme-based sensor [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Carbon dots-decorated multiwalled carbon nanotubes nanocomposites as a high-performance electrochemical sensor for detection of H2O2 in living cells

2016

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A novel enzyme-free hydrogen peroxide sensor composed of carbon dots (CDs) and multi-walled carbon nanotubes (MWCNTs) was prepared. It was found that the carbon dots-decorated multi-walled carbon nanotubes nanocomposites (CDs/MWCNTs) modified glassy carbon (GC) electrode (CDs/MWCNTs/GCE) exhibited a significant synergistic electrocatalytic activity towards hydrogen peroxide reduction as compared to carbon dots or multi-walled carbon nanotubes alone, and the CDs/MWCNTs/GCE has shown a low detection limit as well as excellent stability, selectivity, and reproducibility. These remarkable analytical advantages enable the practical application of CDs/MWCNTs/GCE for the real-time tracking of hydrogen peroxide (H2O2) released from human cervical cancer cells with satisfactory results. The enhanced electrochemical activity can be assigned to the edge plane-like defective sites and lattice oxygen in the CDs/MWCNTs nanocomposites due to the small amount of decoration of carbon dots on the multi-walled carbon nanotubes. Based on a facile preparation method and with good electrochemical properties, the CDs/MWCNTs nanocomposites represent a new class of carbon electrode for electrochemical sensor applications. Graphical Abstract CDs/MWCNTs exhibited good electrocatalytic activity and stability to H2O2 reduction and can be used for real-time detection of H2O2 released from living cells.

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Section: Introductionmentioning

confidence: 99%

Carbon dots-decorated multiwalled carbon nanotubes nanocomposites as a high-performance electrochemical sensor for detection of H2O2 in living cells

2016

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“…These good properties of the SWCNT film ensure that it can be used as a conductive substrate for electrodeposition of nanoparticles and can provide a rapid electron transfer path in electrochemical processes. 23,28 Moreover, well-defined photoresist polymer patterns on the SWCNT film made using the photolithography method provide excellent conditions for the electrochemical deposition of nanoparticles on the SWCNT surface due to the high electric field strength induced by the features of the pattern. Figure 2A shows the FE-SEM image of the as-prepared Au-Pt alloy nanoparticles on the SWCNT electrode after the electrochemical deposition process.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, SWCNTs have been used as electrode materials in applications of electronics, catalysis, and sensing. nanoparticles such as gold, 22 silver, 23 platinum, 24 and palladium. 25 The remarkable properties of the Au-Pt alloy nanoparticles and SWCNT electrodes motivated us to design alloy nanoparticlemodified SWCNT sensors for the electrochemical detection of hydroxylamine.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Detection of Hydroxylamine via Au-Pt Alloy Nanoparticle-modified Single-walled Carbon Nanotube Electrodes

Geng

Tran

et al. 2017

ANAL. SCI.

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Our recent studies have demonstrated that SWCNT electrodes have strong electrocatalytic activity when modified with metal 2017 © The Japan Society for Analytical Chemistry † To whom correspondence should be addressed. In the present study, we developed an electrochemical sensor for highly sensitive detection of hydroxylamine using Au-Pt alloy nanoparticles. Au-Pt alloy nanoparticles were electrochemically deposited on a working electrode made of singlewalled carbon nanotubes. The framework composition in the Au-Pt alloy nanoparticle was easily controlled by adjusting the Au 3+ :Pt 4+ composition ratio in the precursor solution. Morphological and chemical characterizations of the resulting Au-Pt alloy nanoparticles were performed using field emission scanning electron microscopy, X-ray diffraction, and energy dispersion X-ray spectroscopy. When the Au 3+ :Pt 4+ ratio in the precursor solution was 1:5, the ratio of Au:Pt atom in alloy nanoparticle was about 6:4. Au60Pt40 alloy nanoparticles were found to have the optimum synthetic ratio for hydroxylamine detection. The electrocatalytic performance of Au-Pt alloy nanoparticles in the presence of hydroxylamine was also characterized using cyclic voltammetry, differential pulse voltammetry, and chronoamperometry. In the chronoamperometric detection of hydroxylamine, the sensor exhibited a detection limit of 0.80 μM (S/N = 3) and a high sensitivity of 184 μA mM -1 cm -2 . Moreover, the amperometric response of the sensor in 1 mM hydroxylamine was stable for a long time (450 s). Long-term stability tests showed that the current responses to hydroxylamine were 96, 91 and 85% of the initial signal value after storage for 5, 10, and 20 days, respectively.

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“…1 Various analytical methods for detection of H 2 O 2 have been studied including fluorescence, 2 chemiluminescence, 3,4 electrochemical, [5][6][7][8][9][10][11][12][13][14][15] and chemiresistive 16 detection in addition to titrimetry 17 and spectrophotometry. 18 All these methods, except electrochemical detection, suffer from some technical downsides such as time-consuming procedure, low selectivity, low sensitivity, and complicated instrumentation.…”

mentioning

confidence: 99%

“…6,7,11,13,15 Besides, Li et al reported that incorporating carbon nanotubes in electrode structure would improve the response current to the reduction of hydrogen peroxide. 20 Recently, it is great interest to develop paper-based chemical sensors due to their simple fabrication process, low cost, and scalable manufacturing via the various type of printing.…”

mentioning

confidence: 99%

An Inkjet-Printed Non-Enzymatic Hydrogen Peroxide Sensor on Paper

Shamkhalichenar

Choi

2017

J. Electrochem. Soc.

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This paper reports a novel disposable non-enzymatic hydrogen peroxide sensor fabricated using an inkjet printing method on paper. An electrochemical cell based on carbon nanotubes was patterned and printed on a paper substrate. Silver nanoparticles have been used as the catalyst for electrochemical reduction of H 2 O 2 . Moreover, a handheld multichannel potentiostat was developed in order to on-site determination of hydrogen peroxide. The device was characterized by performing simultaneous cyclic voltammetry measurements utilizing separate working electrodes at various scan rates. Using the presented system, we successfully measured the hydrogen peroxide concentration in an alkaline solution with the linear range of 1 μM-700 μM. Incorporating the paper-based enzyme-free sensor and portable readout system will result in accurate, reliable, cost effective, and on-site measurement of hydrogen peroxide in concentration as low as 1 μM.

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Electrocatalytic reduction of hydrogen peroxide by silver particles patterned on single-walled carbon nanotubes

Cited by 93 publications

References 46 publications

Carbon dots-decorated multiwalled carbon nanotubes nanocomposites as a high-performance electrochemical sensor for detection of H2O2 in living cells

Carbon dots-decorated multiwalled carbon nanotubes nanocomposites as a high-performance electrochemical sensor for detection of H2O2 in living cells

Electrochemical Detection of Hydroxylamine via Au-Pt Alloy Nanoparticle-modified Single-walled Carbon Nanotube Electrodes

An Inkjet-Printed Non-Enzymatic Hydrogen Peroxide Sensor on Paper

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