Indirect Sensing of Lower Aliphatic Ester Using Atomic Gold Decorated Polyaniline Electrode

Chakraborty, Parthojit; Chien, Yu‐An; Chang, Tso-Fu Mark; Sone, Masato; Nakamoto, Takamichi

doi:10.3390/s20133640

Cited by 7 publications

(18 citation statements)

References 26 publications

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“…The oxidation reached 55.0 and 78.0 μA/cm 2 as the glucose concentration increased to 10.0 and 20.0 mM, respectively. The even-odd pattern observed in the oxidation of short-chain aliphatic esters [10,11] was also observed from comparisons of the current responses generated by the three PANI/AuN electordes (N = 1-3) in this study, as shown in Figure 5. The PANI/Au2 electrode showed the best catalytic activity in the oxidation of glucose among the three electrodes.…”

Section: Resultssupporting

confidence: 75%

“…In order to evaluate the properties of atomic-level clusters experimentally, Janata et al reported a cyclic atomic electrodeposition process to allow electrodeposition of gold clusters one atom by one atom [7][8][9][10]. In the preparation of atomic-level gold clusters, a solution containing the tetrachloroaurate anion (AuCl 4 − ) is used.…”

Section: Introductionmentioning

confidence: 99%

“…The PANI/Au 2 electrode prepared by cyclic atomic electrodeposition is used in the sensing of ethanol, normal propanol, isopropanol and ethyl formate vapors [10]. PANI/Au 2 shows decent catalytic activity in sensing these short-chain aliphatic esters.…”

Section: Introductionmentioning

confidence: 99%

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Catalytic Activity of Atomic Gold-Decorated Polyaniline Support in Glucose Oxidation

et al. 2020

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Atomic-level gold clusters are decorated on a polyaniline (PANI) support by a cyclic atomic electrodeposition process, and the catalytic activity in the oxidation of glucose is studied. The evaluation is conducted by cyclic voltammetry using atomic-level gold clusters-decorated PANI (PANI/AuN, where N indicates the atomic size of the Au cluster and N = 1~3 in this study) as the working electrode and a solution containing 0 to 50.0 mM of glucose in phosphate-buffered saline. The catalytic activity is determined from the oxidation current observed at around +0.6 V vs. Ag/AgCl. The catalytic activity is found to be affected by the size of gold clusters decorated on the PANI/AuN, whereby the catalytic activity is low when N is 1 or 3. On the other hand, an obvious enhancement in the catalytic activity is observed for the PANI/Au2 electrode.

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Section: Resultssupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

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Catalytic Activity of Atomic Gold-Decorated Polyaniline Support in Glucose Oxidation

et al. 2020

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“…In our previous research, in a bulky EC system, it was successfully demonstrated and verified that modifying platinum (Pt) WE with PANI and atomic gold clusters (Au n where n = 1 to 4) showed the electrocatalytic activity and exhibited an odd-even pattern for isomer compounds, particularly for the Au 2 clusters [32][33][34]. Afterward, a tiny planar IDA electrode modified with PANI decorated Au 2 clusters was successfully conducted and first reported by our research group; however, it used only one RTIL (1-ethyl-3-methylimidazolium trifluoromethanesulfonate) and one fixed EC potential (i.e., +1 V) [35,36].…”

Section: Introductionmentioning

confidence: 88%

Array of Miniaturized Amperometric Gas Sensors Using Atomic Gold Decorated Pt/PANI Electrodes in Room Temperature Ionic Liquid Films

Faricha

Yoshida

Chakraborty

et al. 2023

Sensors

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Miniaturized sensors possess many advantages, such as rapid response, easy chip integration, a possible lower concentration of target compound detection, etc. However, a major issue reported is a low signal response. In this study, a catalyst, the atomic gold clusters of Aun where n = 2, was decorated at a platinum/polyaniline (Pt/PANI) working electrode to enhance the sensitivity of butanol isomers gas measurement. Isomer quantification is challenging because this compound has the same chemical formula and molar mass. Furthermore, to create a tiny sensor, a microliter of room-temperature ionic liquid was used as an electrolyte. The combination of the Au2 clusters decorated Pt/PANI and room temperature ionic liquid with several fixed electrochemical potentials was explored to obtain a high solubility of each analyte. According to the results, the presence of Au2 clusters increased the current density due to electrocatalytic activity compared to the electrode without Au2 clusters. In addition, the Au2 clusters on the modified electrode had a more linear concentration dependency trend than the modified electrode without atomic gold clusters. Finally, the separation among butanol isomers was enhanced using different combination of room-temperature ionic liquids and fixed potentials.

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“…This approach takes advantage of the fact that PANI is homogeneous, strongly adherent to the electrode surface and chemically stable [99]. A PANI film is deposited on an electrode by electrodeposition of aniline at an electrode followed by electrodeposition of metal from metal precursor salt by pulsed or potential cycle program [100,101]. The functionalization of PANI with the MNPs is due to the modification of interfacial electronic structure which occurs at the solution/polymer interface and is determined by the redox potentials of PANI and the metal ions [102].…”

Section: Electrodepositionmentioning

confidence: 99%

Electroconductive Green Metal‐polyaniline Nanocomposites: Synthesis and Application in Sensors

Kyomihumbo

Feleni

2022

Electroanalysis

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Polyaniline (PANI) is one of the most extensively used conducting polymer due to its fascinating properties including conducting, thermal, optical, magnetic and electrochemical properties, simple synthesis procedure and low cost of monomer. It has attracted major attention in a variety of applications including electrochemical sensors, catalysts, supercapacitors and biosensors. However, its limitations such as insolubility in common solvents, low process‐ability and poor mechanical properties have led to the development of new approaches to improve it properties. Metal nanoparticles (MNPs) such as silver, gold, copper and palladium have been combined with PANI to improve on its properties which has led to a new class of materials known as metal/PANI nanocomposites. These hybrid nanocomposites incorporate advantages of both MNPs and polymers which effectively improves the properties of the individual materials. Various synthesis techniques including in situ polymerization, ɤ‐radiolysis, electrodeposition, complexation, vacuum deposition and interfacial polymerization have been used in the formation of metal/PANI nanocomposites. These nanocomposites have been used in various sensor and biosensor applications due to their excellent conductivity, ease of synthesis, excellent redox potentials, chemical and thermal stability. This review highlights the various metal/PANI nanocomposites, their various synthesis techniques and their application in sensors and biosensors. The importance of these nanocomposites in sensing and signaling various toxic heavy metals such as mercury, lead and silver and toxic gases such as hydrogen sulphide, ammonia and chloroform has been discussed. In addition the review covers the applications of metal/PANI nanocomposites in biosensor systems for the detection of glucose, DNA, protein, cholesterol, drugs and hydrogen peroxide.

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Indirect Sensing of Lower Aliphatic Ester Using Atomic Gold Decorated Polyaniline Electrode

Cited by 7 publications

References 26 publications

Catalytic Activity of Atomic Gold-Decorated Polyaniline Support in Glucose Oxidation

Catalytic Activity of Atomic Gold-Decorated Polyaniline Support in Glucose Oxidation

Array of Miniaturized Amperometric Gas Sensors Using Atomic Gold Decorated Pt/PANI Electrodes in Room Temperature Ionic Liquid Films

Electroconductive Green Metal‐polyaniline Nanocomposites: Synthesis and Application in Sensors

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