Electrochemical sensor for detection of p-nitrophenol based on nanoporous gold

Liu, Zhaona; Du, Junguo; Qiu, Cuicui; Huang, Lihui; Ma, Houyi; Shen, Dazhong; Ding, Yi

doi:10.1016/j.elecom.2009.05.004

Cited by 200 publications

(98 citation statements)

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“…The electrochemical detection of nitrophenol using a nanoporous gold electrode has also been reported [148,149]. Different electrochemical behavior has been observed on nanoporous gold versus planar gold particularly as it pertains to the different isomers of nitrophenol.…”

Section: Small Molecule Sensingmentioning

confidence: 94%

“…The ability to use an electrode that has an electrochemically useful surface area that is 10-100 times larger than a traditional electrode thus offers much promise. Examples of small molecules that have been studied include dopamine [144], ascorbic acid [144], hydrogen peroxide [143,145], nitrite [146], cysteine [147], nitrophenol [148,149], hydrazine [150], and glucose [151].…”

Section: Small Molecule Sensingmentioning

confidence: 99%

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Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Collinson

2013

ISRN Analytical Chemistry

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Nanoporous gold prepared by dealloying Au:Ag alloys has recently become an attractive material in the field of analytical chemistry. This conductive material has an open, 3D porous framework consisting of nanosized pores and ligaments with surface areas that are 10s to 100s of times larger than planar gold of an equivalent geometric area. The high surface area coupled with an open pore network makes nanoporous gold an ideal support for the development of chemical sensors. Important attributes include conductivity, high surface area, ease of preparation and modification, tunable pore size, and a bicontinuous open pore network. In this paper, the fabrication, characterization, and applications of nanoporous gold in chemical sensing are reviewed specifically as they relate to the development of immunosensors, enzyme-based biosensors, DNA sensors, Raman sensors, and small molecule sensors.

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Section: Small Molecule Sensingmentioning

confidence: 94%

Section: Small Molecule Sensingmentioning

confidence: 99%

Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Collinson

2013

ISRN Analytical Chemistry

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“…15 As a widely used industrial compound, p-nitrophenol (PNP) has been listed as a priority pollutant by US Environmental Protection Agency (EPA) due to its toxic effects on humans, animals and plants. 16,17 Particularly, PNP interacting with DNA leads to significant damage to the health of human being. 18 However, the presence of a nitro group in PNP causes this aromatic compound to experience a strong chemical stability and resistance to microbial degradation.…”

Section: Introductionmentioning

confidence: 99%

“…electrochemistry, 16,23 spectrophotometry, 24 and chemiluminescence, 25 A novel photoelectrochemical strategy for the sensitive determination of p-nitrophenol (PNP) was developed using a glassy carbon electrode (GCE) modified with CdSe quantum dots (QDs) and DNA composite film (CdSe-DNA/GCE). Various surface analytical techniques, including X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM), were employed to characterize the synthesized CdSe QDs and CdSe-DNA modified electrode.…”

mentioning

confidence: 99%

Visible Light-driven Photoelectrochemical Determination of p-Nitrophenol Based on CdSe Quantum Dots and DNA Composite Film Modified Electrode

et al. 2015

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21,22 electrochemistry, 16,23 spectrophotometry, 24 and chemiluminescence, 25 A novel photoelectrochemical strategy for the sensitive determination of p-nitrophenol (PNP) was developed using a glassy carbon electrode (GCE) modified with CdSe quantum dots (QDs) and DNA composite film (CdSe-DNA/GCE). Various surface analytical techniques, including X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM), were employed to characterize the synthesized CdSe QDs and CdSe-DNA modified electrode. The interfacial behaviors of the modified electrodes were analyzed by electrochemical impedance spectroscopy (EIS), and the interaction between PNP and DNA was studied by UV-visible spectrometry. Due to the PNP-DNA interaction, CdSe-DNA/GCE exhibited a sensitive photocurrent response toward PNP under visible-light irradiation. The influencing factors, such as the concentration of DNA used for fabricating CdSe-DNA/GCE and the bias potential applied in the photoelectrochemical measurement, were investigated. Under the optimized conditions, the photocurrent on CdSe-DNA/GCE was linearly increased with the PNP concentration from 0.7 to 50 μmol L -1 , with a detection limit (3 S/N) of 0.27 μmol L -1 . The proposed photoelectrochemical strategy was successfully applied to monitoring the degradation of PNP.

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“…geneous catalysis and electroanalysis. [9][10][11] As shown in Figure 1B, the ligaments on NPG surfaces can be served as curved Au substrates. 12 The local environment of adsorbed thiolate monolayer on the ligaments of NPG is similar to that on AuNP surfaces.…”

mentioning

confidence: 99%