Layered double hydroxides functionalized with anionic surfactant: Direct electrochemistry and electrocatalysis of hemoglobin

Li, Maoguo; Chen, Shuihong; Ni, Fang; Wang, Yinling; Wang, Lun

doi:10.1016/j.electacta.2008.03.033

Cited by 50 publications

(24 citation statements)

References 54 publications

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“…For comparison, the GC electrode modified with Zn/Al LDH synthesized by hydrothermal treatment was prepared according to our previous publication [22] and this modified electrode was named as LDH/GCE.…”

Section: Electrode Modificationmentioning

confidence: 99%

Sensitive and Facile Determination of Catechol and Hydroquinone Simultaneously Under Coexistence of Resorcinol with a Zn/Al Layered Double Hydroxide Film Modified Glassy Carbon Electrode

Wang

et al. 2009

Electroanalysis

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A stable dihydroxybenzene sensor was fabricated by electrochemical deposition of Zn/Al layered double hydroxide film on glassy carbon electrode (LDHf/GCE). The sensitive and facile electrochemical method for the simultaneous determination of catechol (CA) and hydroquinone (HQ) under coexistence of resorcinol (RE) has been achieved at the LDHf/GCE in phosphate buffer solution (pH 6.5). Under the optimized conditions, the differential pulse voltammetry response of the modified electrode to CA (or HQ) shows a linear concentration range of 0.6 mM to 6.0 mM (or 3.2 mM to 2.4 mM) with a correlation coefficient of 0.9987 (or 0.9992) and the calculated limit of detection is 0.1 mM (or 1.0 mM) at a signal-to-noise ratio of 3. In the presence of 50 mM isomer, the linear concentration ranges for CA and HQ are 3.0 mM to 1.5 mM and 12.0 mM to 0.8 mM, respectively. The detection limits are 1.2 mM and 9.0 mM. Further, the proposed method has been performed to successfully detect dihydroxybenzene isomers in analysis of real samples, such as water and tea.

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Section: Electrode Modificationmentioning

confidence: 99%

Sensitive and Facile Determination of Catechol and Hydroquinone Simultaneously Under Coexistence of Resorcinol with a Zn/Al Layered Double Hydroxide Film Modified Glassy Carbon Electrode

Wang

et al. 2009

Electroanalysis

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“…The well-crystallized Mg-Al-HCF LDHs were prepared by using facile, hydrothermal technology [31,32]. Typically, the mixed basic solution containing 2 M NaOH and 0.2 M K 3 Fe(CN) 6 was quickly added (slowly after the pH about 9.0) into 150 mL of mixed salt solution containing 20 mM Mg(NO 3 ) 2 · 6 H 2 O and 10 mM Al(NO 3 ) 3 · 9 H 2 O with vigorous stirring, maintaining the pH close to 10.86 followed by continuous magnetic stirring for 20 min.…”

Section: Synthesis Of Mg-al-hcf Ldhsmentioning

confidence: 99%

“…3b). In fact, the uniform Mg-Al-HCF LDHs with a lateral size 40 -200 nm can be prepared facilely by varying hydrothermal treatment conditions (time, temperature and concentration) [31,32].…”

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confidence: 99%

Peroxidase‐Like Layered Double Hydroxide Nanoflakes for Electrocatalytic Reduction of H₂O₂

Wang

Chen

et al. 2009

Electroanalysis

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Peroxidase-like layered double hydroxide (LDH) nanoflakes were synthesized directly and facilely by a one-pot chemical method, hydrothermal treatment. The as-prepared LDHs were characterized by transmission electron microscopy, scanning electron microscopy, X-ray diffraction, Fourier transform IR, and cyclic voltammetry. The functionalized LDHs immobilized on the glassy carbon electrode exhibited a well-defined pair of redox peaks, excellent electrocatalytic activity toward the reduction of hydrogen peroxide without inhibition of dissolved oxygen and a higher affinity for H 2 O 2 , just like the peroxidase. The low apparent Michaelis -Menten constant was only 242 mM. The electrochemical response to H 2 O 2 shows a linear range of 12 -254 mM with the calculated detection limit of 2.3 mM at a signal-to-noise ratio of 3. Furthermore, compared with most metal hexacyanoferrates, the peroxidaselike LDHs are very stable in neutral and alkaline solution. The electrochemical and electrocatalytic behavior of the functionalized LDHs indicate that they may be useful to explore man-made mimics of enzyme in electrochemical biosensors.

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“…However, the NGB/Co-Al-LDH/GCE gave a pair of stable redox peaks with the apparent formal peak potential (E p ) of 0.482 V (curve c), which was much higher than that of a Co-Al LDH-modified Au electrode in 0.1 M NaOH (about 0.06 V) [13]. For comparison, Zn-Al-CO 3 LDHs were also prepared according to our previous work [18] and used for fabrication of the NGB-modified electrode (NGB/ Zn-Al-LDH/GCE). As can be seen from Fig.…”

Section: Resultsmentioning

confidence: 99%

A New Strategy for Immobilization of Electroactive Species on the Surface of Solid Electrode

et al. 2010

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This letter reports on a new method for immobilization of electroactive species on a solid electrode surface based on the composite film of naphthol green B (NGB) and Co-Al layered double hydroxides (LDHs). After the oxidation potential of Co(III)/(II) couple was dramatically enhanced by NGB, the functionalized LDHs exhibited a remarkable electrocatalytic activity toward the oxidation of hydrazine in a weak acidic medium. The amperometric response to hydrazine showed a linear range of 0.17 μM-400 mM, with the calculated detection limit of 0.1 μM at a signal-to-noise ratio of three and the sensitivity of the amperometric hydrazine sensor was found to be 35.26 μAμM −1 . The modified electrode displayed an acceptable reproducibility and good stability. The new strategy is expected to have wide applications for changing of the potential of redox couple in metal oxides, hydroxides, double hydroxides, and so on.

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Layered double hydroxides functionalized with anionic surfactant: Direct electrochemistry and electrocatalysis of hemoglobin

Cited by 50 publications

References 54 publications

Sensitive and Facile Determination of Catechol and Hydroquinone Simultaneously Under Coexistence of Resorcinol with a Zn/Al Layered Double Hydroxide Film Modified Glassy Carbon Electrode

Sensitive and Facile Determination of Catechol and Hydroquinone Simultaneously Under Coexistence of Resorcinol with a Zn/Al Layered Double Hydroxide Film Modified Glassy Carbon Electrode

Peroxidase‐Like Layered Double Hydroxide Nanoflakes for Electrocatalytic Reduction of H₂O₂

A New Strategy for Immobilization of Electroactive Species on the Surface of Solid Electrode

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Layered double hydroxides functionalized with anionic surfactant: Direct electrochemistry and electrocatalysis of hemoglobin

Cited by 50 publications

References 54 publications

Sensitive and Facile Determination of Catechol and Hydroquinone Simultaneously Under Coexistence of Resorcinol with a Zn/Al Layered Double Hydroxide Film Modified Glassy Carbon Electrode

Sensitive and Facile Determination of Catechol and Hydroquinone Simultaneously Under Coexistence of Resorcinol with a Zn/Al Layered Double Hydroxide Film Modified Glassy Carbon Electrode

Peroxidase‐Like Layered Double Hydroxide Nanoflakes for Electrocatalytic Reduction of H2O2

A New Strategy for Immobilization of Electroactive Species on the Surface of Solid Electrode

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Product

Resources

About

Peroxidase‐Like Layered Double Hydroxide Nanoflakes for Electrocatalytic Reduction of H₂O₂