Hydrothermal assisted synthesis of zeolite based nickel deposited poly(pyrrole-co-fluoro aniline)/CuS catalyst for methanol and sulphur fuel cell applications

Saranya, Durairaj; Selvaraj, V.

doi:10.1016/j.jelechem.2017.01.026

Cited by 20 publications

(6 citation statements)

References 47 publications

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“…These graphs are generally known as semicircles, where the load transfer resistance increases as the diameter of the circle decreases. The charge transfer resistance (Rct) is associated with the diameter of the semicircle because as the diameter decreases, Rct decreases, and so the catalytic activity increases [50] . As seen in Figure 7, the Nyquist plot taken at the potential of 0.4 V displayed the best electrochemical resistance.…”

Section: Resultsmentioning

confidence: 97%

“…The charge transfer resistance (Rct) is associated with the diameter of the semicircle because as the diameter decreases, Rct decreases, and so the catalytic activity increases. [50] As seen in Figure 7, the Nyquist plot taken at the potential of 0.4 V displayed the best electrochemical resistance. This result indicates that hybrid 1 catalyst has the highest activity in hydrazine electrooxidation reaction.…”

Section: Ccd For Hydrazine Electrooxidation On (1) Catalystmentioning

confidence: 85%

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Synthesis of Novel Artemisinin Derivatives and Their Electrochemical Properties

et al. 2022

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In present, new artemisinin-based organic compounds (1-6) are designed and synthesized in excellent yields (up to 97 %) via Steglich Esterification reactions. All new artemisinin derivatives are tested as anode catalysts for hydrazine electrooxidation reactions with electrochemical methods in 1 M KOH/ 0.5 M N 2 H 4 solution. Hybrid molecule 1 exhibits the best catalytic activity in hydrazine electrooxidation reaction with 2.28 mA cm À 2 value. Moreover, response surface methodology (RSM) is applied to investigate of optimum electrode conditions. By using optimum conditions, hydrazine electrooxidation is obtained as 3.55324 mA cm À 2 . As a result, artemisininbased hybrid compounds may be alternative, and nextgeneration anode catalyst for direct hydrazine fuel cells.

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Section: Resultsmentioning

confidence: 97%

Section: Ccd For Hydrazine Electrooxidation On (1) Catalystmentioning

confidence: 85%

Synthesis of Novel Artemisinin Derivatives and Their Electrochemical Properties

et al. 2022

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“…The catalyst's activity and stability of alcohol oxidation in alkaline medium depend not only on the presence of metal nanoparticles but also on the properties of support material and interactions between the metal particles and support materials. Generally, conductive polymers [11]; carbon-based materials like graphene, carbon nanotubes, carbon fibers, and mesoporous carbon [12][13][14][15]; metal sulfides [16]; and zeolites [17] are used as catalyst supports for various applications.…”

Section: Introductionmentioning

confidence: 99%

Bio‐Based Graphene Sheet/Copolymer Composite as Supporting Material for Nanocatalysts towards Electrochemical Studies and Direct Alkaline Alcohol Fuel Cells

Selvaraj¹,

ThamilMagal²,

Andal³

et al. 2022

Journal of Nanomaterials

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In this work, graphene carbon sheets (BGS) were prepared from writing paper and lemon peel, and its polymer composite has a higher surface area compared with the existing Vulcan carbon. Further, the use of lead as a promoter for the oxidation of alcohol and CO on platinum-supported poly(amine-terminated cyclophosphazene-co-cyclophosphazene)-biobased graphene sheet (Poly(AFCP-co-CP)-BGS) composite was demonstrated. The size, phase morphology, and distribution of metal nanoparticles on Poly(AFCP-co-CP)-BGS composite as well as the formation of composite based catalysts were confirmed from TEM, XRD, and FTIR studies. The catalytic activity and stability of the prepared catalysts were tested and compared to methanol, ethylene glycol, glycerol, and CO in 0.5 M KOH solution. The results conclude that the lead-doped Pt/Poly(AFCP-co-CP)-BGS catalyst shows higher oxidation current with respect to onset potential and lower I f / I r ratio for alcohol as well as CO oxidation. In addition, Pt-Pb/Poly(AFCP-co-CP)-BGS catalyst was checked for direct alkaline fuel cells and proved as a potent anode catalyst in alkaline medium for real-time fuel battery applications. In addition, Poly(AFCP-co-CP)-BGS composite also promotes the catalytic reaction compared to Poly(AFCP-co-CP) and BGS supports as noticed from methanol oxidation in alkaline medium. The surface area of the prepared supporting material is 750.72 m2g-1, which is higher than the activated carbon (250.12m2g-1). So, the prepared Poly(AFCP-co-CP)-BGS composite is a potent support for metal deposition, electrooxidation, and single stack fuel cell constructions.

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“…Nano-structured copolymer of aniline (ANI) and pyrrole (Py), (poly(ANI-co-Py)), synthesized at low temperature showed enhanced and selective ammonia sensing behavior as compared with individual polymers PANI and PPy [ 3 ]. Zeolite-based nickel-deposited poly(Py-co-fluoro-ANI)/CuS [ 4 ] and nano-sulfur/poly(Py-co-ANI) [ 5 ] were used as efficient catalysts in sulfur fuel cell applications. Poly(ANI-co-Py)/graphene oxide [ 6 ] and transition metal doped poly(ANI-co-Py)/multi-walled carbon nanotube nanocomposite [ 7 ] were employed as high performance supercapacitor electrode materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Nano-Conducting Copolymer Composites: Efficient Sorbents for Organic Pollutants

2017

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Nano-conducting copolymers of aniline (ANI) and pyrrole (Py) with silica of different starting monomer ratios are prepared by oxidative chemical polymerization. X-ray diffraction (XRD) data showed that polyaniline (PANI) is the predominant phase in copolymer composites with a higher starting ANI monomer ratio while polypyrrole (PPy) is the major phase for other prepared samples. Transmission and scanning electron microscope images ascertained XRD results where hexagonal-shaped particles are assigned to PANI/SiO2 and poly(9ANI-co-1Py)/SiO2 samples; the cauliflower morphology can be observed for PPy/SiO2, poly(1ANI-co-9Py)/SiO2, poly(1ANI-co-2Py)/SiO2, and poly(1ANI-co-1Py)/SiO2 samples. One-dimensional nano-fibers can be obtained by using a starting monomer ratio of 2ANI:1Py during synthesis. Thermal analysis showed that copolymerization increases the thermal stability as compared with PANI/SiO2 and PPy/SiO2 composites. All prepared samples were applied as sorbents for Congo red dye from aqueous solutions. It was found that the sorption capacity value was affected by the starting monomer ratio; poly(2ANI-co-1Py)/SiO2 has the highest sorption capacity; the qm value is 142.9 mg g−1 due to its highly-stabilized nano-structure.

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Hydrothermal assisted synthesis of zeolite based nickel deposited poly(pyrrole-co-fluoro aniline)/CuS catalyst for methanol and sulphur fuel cell applications

Cited by 20 publications

References 47 publications

Synthesis of Novel Artemisinin Derivatives and Their Electrochemical Properties

Synthesis of Novel Artemisinin Derivatives and Their Electrochemical Properties

Bio‐Based Graphene Sheet/Copolymer Composite as Supporting Material for Nanocatalysts towards Electrochemical Studies and Direct Alkaline Alcohol Fuel Cells

Synthesis and Characterization of Nano-Conducting Copolymer Composites: Efficient Sorbents for Organic Pollutants

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