Significant enhancement in the electrochemical determination of 4-aminophenol from nanoporous gold by decorating with a Pd@CeO<sub>2</sub> composite film

Li, Gang; Sun, Peng; Wu, Fanggen; Zhao, Jie; Han, Dongxue; Cui, Guofeng

doi:10.1039/c9nj05728e

Cited by 7 publications

(11 citation statements)

References 61 publications

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“…Two-step or co-electrodeposition approaches are also possible to incorporate multiple metals into the NPG framework. For example, Cui and coworkers described a two-step electrodeposition approach for fabricating a Pd@CeO 2 NPG electrode on carbon fiber paper (CFP) [ 131 ]. The NPG-CFP was first immersed in a solution of Ce(NO 3 ) 2 , and then the cerium ions were electrochemically reduced.…”

Section: Bimetallic Npg Electrode Fabricationmentioning

confidence: 99%

“…Figure 10 shows the SEM images of a Pd@CeO 2 NPG at various points during its fabrication. In this work, Cui and coworkers first formed NPG coated on carbon fiber paper (CFP); Figure 10 a,b show the SEM images [ 131 ]. Next, the NPG-CFP was immersed in a solution of Ce(NO 3 ) 2 and the cerium ions were electrochemically reduced.…”

Section: Characterizationmentioning

confidence: 99%

“…The surface became rougher when CeO 2 was deposited, but the porous structure was still present ( Figure 10 c). It can be seen from Figure 10 d that the Pd nanoparticles are uniformly dispersed on the CeO 2 layer [ 131 ].…”

Section: Characterizationmentioning

confidence: 99%

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Recent Advances in Bimetallic Nanoporous Gold Electrodes for Electrochemical Sensing

Islam,

Banik,

Collinson

2023

Nanomaterials

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Bimetallic nanocomposites and nanoparticles have received tremendous interest recently because they often exhibit better properties than single-component materials. Improved electron transfer rates and the synergistic interactions between individual metals are two of the most beneficial attributes of these materials. In this review, we focus on bimetallic nanoporous gold (NPG) because of its importance in the field of electrochemical sensing coupled with the ease with which it can be made. NPG is a particularly important scaffold because of its unique properties, including biofouling resistance and ease of modification. In this review, several different methods to synthesize NPG, along with varying modification approaches are described. These include the use of ternary alloys, immersion–reduction (chemical, electrochemical, hybrid), co-electrodeposition–annealing, and under-potential deposition coupled with surface-limited redox replacement of NPG with different metal nanoparticles (e.g., Pt, Cu, Pd, Ni, Co, Fe, etc.). The review also describes the importance of fully characterizing these bimetallic nanocomposites and critically analyzing their structure, surface morphology, surface composition, and application in electrochemical sensing of chemical and biochemical species. The authors attempt to highlight the most recent and advanced techniques for designing non-enzymatic bimetallic electrochemical nanosensors. The review opens up a window for readers to obtain detailed knowledge about the formation and structure of bimetallic electrodes and their applications in electrochemical sensing.

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Section: Bimetallic Npg Electrode Fabricationmentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

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Recent Advances in Bimetallic Nanoporous Gold Electrodes for Electrochemical Sensing

Islam,

Banik,

Collinson

2023

Nanomaterials

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“…4-AP considered as a precursor for the synthesis of wide range of the materials for different application in various field, such as medical substances, rubber, dyestuff, feeding stuff and pesticides [ 6 ] and therefore, significant quantities of 4-AP can be predictably released as a pollutant into the environment. 4-AP is toxic and detrimental to human health by raising the body temperature for a long period [ 7 ]. Indeed, monitoring of 4-AP is essential and the development of low-cost, selective and sensitive analytical methods is urgently necessary.…”

Section: Introductionmentioning

confidence: 99%

Development of an Efficient Voltammetric Sensor for the Monitoring of 4-Aminophenol Based on Flexible Laser Induced Graphene Electrodes Modified with MWCNT-PANI

Nasraoui

Ameur

Al‐Hamry

et al. 2022

Sensors

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Sensitive electrodes are of a great importance for the realization of highly performant electrochemical sensors for field application. In the present work, a laser-induced carbon (LIC) electrode is proposed for 4-Aminophenol (4-AP) electrochemical sensors. The electrode is patterned on a commercial low-cost polyimide (Kapton) sheet and functionalized with a multi-walled carbon nanotubes polyaniline (MWCNT-PANI) composite, realized by an in-situ-polymerization in an acidic medium. The LIC electrode modified with MWCNT-PAPNI nanocomposite was investigated by SEM, AFM, and electrochemically in the presence of ferri-ferrocyanide [Fe(CN)6]3−/4− by cyclic voltammetry and impedance spectroscopy. The results show a significant improvement of the electron transfer rate after the electrode functionalization in the presence of the redox mediators [Fe(CN)6]3−/4−, related directly to the active surface, which itself increased by about 18.13% compared with the bare LIG. The novel electrode shows a good reproducibility and a stability for 20 cycles and more. It has a significantly enhanced electro-catalytic activity towards electrooxidation reaction of 4-AP inferring positive synergistic effects between carbon nanotubes and polyaniline PANI. The presented electrode combination LIC/MWCNT-PANI exhibits a detection limit of 0.006 μM for the determination of 4-AP at concentrations ranging from 0.1 μM to 55 μM and was successfully applied for the monitoring in real samples with good recoveries.

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“…Porous materials including porous fibers refer to those containing open or internal pores. Many unique properties of porous materials derived from the intrinsically large surface area have drawn the interest of researchers to explore their new uses in many fields including energy conversion and storage [1][2][3][4][5][6], biomedical engineering [7,8], adsorption and filtration [9], purification [10][11][12], catalysis [13,14], chemical detection and sensing [15][16][17][18][19][20][21][22], etc. There are different approaches to increasing the specific surface area further by increasing porosity, refining the structures, and implementing both.…”

Section: Introductionmentioning

confidence: 99%

Porous Fiber Processing and Manufacturing for Energy Storage Applications

Gan

2020

ChemEngineering

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The objective of this article is to provide an overview on the current development of micro- and nanoporous fiber processing and manufacturing technologies. Various methods for making micro- and nanoporous fibers including co-electrospinning, melt spinning, dry jet-wet quenching spinning, vapor deposition, template assisted deposition, electrochemical oxidization, and hydrothermal oxidization are presented. Comparison is made in terms of advantages and disadvantages of different routes for porous fiber processing. Characterization of the pore size, porosity, and specific area is introduced as well. Applications of porous fibers in various fields are discussed. The emphasis is put on their uses for energy storage components and devices including rechargeable batteries and supercapacitors.

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Significant enhancement in the electrochemical determination of 4-aminophenol from nanoporous gold by decorating with a Pd@CeO₂ composite film

Abstract: An electrode based on Pd@CeO2 nanocomposite-decorated nanoporous gold on a carbon fiber paper was achieved, which demonstrated excellent performance in 4-aminophenol determination.

Cited by 7 publications

References 61 publications

Recent Advances in Bimetallic Nanoporous Gold Electrodes for Electrochemical Sensing

Recent Advances in Bimetallic Nanoporous Gold Electrodes for Electrochemical Sensing

Development of an Efficient Voltammetric Sensor for the Monitoring of 4-Aminophenol Based on Flexible Laser Induced Graphene Electrodes Modified with MWCNT-PANI

Porous Fiber Processing and Manufacturing for Energy Storage Applications

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Significant enhancement in the electrochemical determination of 4-aminophenol from nanoporous gold by decorating with a Pd@CeO2 composite film

Abstract: An electrode based on Pd@CeO2 nanocomposite-decorated nanoporous gold on a carbon fiber paper was achieved, which demonstrated excellent performance in 4-aminophenol determination.

Cited by 7 publications

References 61 publications

Recent Advances in Bimetallic Nanoporous Gold Electrodes for Electrochemical Sensing

Recent Advances in Bimetallic Nanoporous Gold Electrodes for Electrochemical Sensing

Development of an Efficient Voltammetric Sensor for the Monitoring of 4-Aminophenol Based on Flexible Laser Induced Graphene Electrodes Modified with MWCNT-PANI

Porous Fiber Processing and Manufacturing for Energy Storage Applications

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Product

Resources

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Significant enhancement in the electrochemical determination of 4-aminophenol from nanoporous gold by decorating with a Pd@CeO₂ composite film