Preparation of PEDOT-modified double-layered hollow carbon spheres as Pt catalyst support for methanol oxidation

Niyaz, Mariyam; Sawut, Nurbiye; Jamal, Ruxangul; Abdiryim, Tursun; Helil, Zulpikar; Liu, Haile; Xie, Shuyue; Song, Yanyan

doi:10.1016/j.ijhydene.2021.07.069

Cited by 22 publications

(4 citation statements)

References 58 publications

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“…Moreover, the drop in the methanol oxidation peak current is minimal for the 50 continuous cycles (less than 5%), demonstrating excellent stability shown by the Pt/Se-modified electrode toward MOR. Further, the obtained stability results were compared with previous studies, − and it was found that the stability possessed by Pt/Se was good. The overall possible mechanism involved in the electrochemical detection of 17β-estradiol (E 2 ) and methanol oxidation with Pt/Se as the electrode material is elaborated in Figure .…”

Section: Results and Discussionmentioning

confidence: 83%

Pt Nanoparticle-Decorated Se Rods for Electrochemical Detection of 17β-Estradiol and Methanol Oxidation

Amalraj

Murthy

Wang

2022

ACS Appl. Nano Mater.

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Fabricating platinum (Pt) nanoparticle-draped selenium (Se) rods over the spacious region of glassy carbon electrodes could stimulate an impressive electrocatalytic activity owing to the synergic effect and interfacial property between Pt and Se, the oxophilic property and the anchoring effect of Se, the electron confinement effect, and the surface-to-volume ratio possessed by Pt. Examination of the structure and morphology highlights the physical and chemical properties of the Pt/Se catalyst, as revealed by different physicochemical characterization techniques. From these characterizations, we identified a dual-functional electrocatalyst Pt/Se for electrochemical detection of 17β-estradiol (E2) and methanol oxidation. When used for the electrochemical detection of estradiol, the Pt/Se catalyst displays an excellent response toward electro-oxidation of estradiol in the linear sweep voltammetry (LSV) and the amperometry-it technique. The proposed sensor utilizes a concentration range that varies from 0.05 to 85.5 μM with good sensitivity (0.0376 mA μM–1 cm–2), a lower limit of detection (LOD) being 11.12 nmol L–1, and the limit of quantitation (LOQ) being 36.06 nmol L–1. It yields lower detection limits (LODs: 13.17 and 17.04 nmol L–1) even on detecting estradiol in environmental water samples (river and tap water samples) at a buffered pH of 7.0. In the methanol oxidation reaction (MOR), the Pt/Se catalyst displays a good mass activity and turnover number (TON) of 2.37 A/mg and 1.36 s–1, respectively, by cyclic voltammetry and chronoamperometry. As a result, the prepared Pt/Se electrocatalyst, has provided a creditable combination of stability, electron transfer rate, conductivity, and dual applicability to the electrochemical sensor and the methanol oxidation fuel cell for the first time.

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Section: Results and Discussionmentioning

confidence: 83%

Pt Nanoparticle-Decorated Se Rods for Electrochemical Detection of 17β-Estradiol and Methanol Oxidation

Amalraj

Murthy

Wang

2022

ACS Appl. Nano Mater.

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“…The results of the study showed greater stability toward oxidation with 61% current retention and superior tolerance to the carbonaceous species accumulation compared with other electrocatalysts [185]. Poly(3,4-ethyl) (PEDOT) backed with carbon-supported Pt is used as anode catalysts for DMFC methanol oxidation which exhibits high mass activity and superior stability after 500 durability cycles, which is greater than those of commercial Pt/C catalyst [186]. A study demonstrated a dual-template approach to produce well-defined cage-bell nanostructures containing Pt core and a mesoporous PtM (M 1 4 Co, Ni) bimetallic shell (Pt@mPtM (M 1 4 Co, Ni) CB).…”

Section: Mitigation Strategies For Catalyst Degradationmentioning

confidence: 93%

A Critical Assessment on Functional Attributes and Degradation Mechanism of Membrane Electrode Assembly Components in Direct Methanol Fuel Cells

2021

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Direct methanol fuel cells (DMFC) are typically a subset of polymer electrolyte membrane fuel cells (PEMFC) that possess benefits such as fuel flexibility, reduction in plant balance, and benign operation. Due to their benefits, DMFCs could play a substantial role in the future, specifically in replacing Li-ion batteries for portable and military applications. However, the critical concern with DMFCs is the degradation and inadequate reliability that affect the overall value chain and can potentially impede the commercialization of DMFCs. As a consequence, a reliability assessment can provide more insight into a DMFC component’s attributes. The membrane electrode assembly (MEA) is the integral component of the DMFC stack. A comprehensive understanding of its functional attributes and degradation mechanism plays a significant role in its commercialization. The methanol crossover through the membrane, carbon monoxide poisoning, high anode polarization by methanol oxidation, and operating parameters such as temperature, humidity, and others are significant contributions to MEA degradation. In addition, inadequate reliability of the MEA impacts the failure mechanism of DMFC, resulting in poor efficiency. Consequently, this paper provides a comprehensive assessment of several factors leading to the MEA degradation mechanism in order to develop a holistic understanding.

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“…208,209 Moreover, the rich functional groups on polymers can act as efficient anchoring sites for fixing noble-metal nanocrystals and thus ensure strong interfacial interactions between the noble metals and porous carbon carriers. 210,211 Among various functional polymers, polyaniline (PANI) is the most commonly applied in the surface functionalization of porous carbon nanoarchitectures towing to its π-conjugated polymeric chains, high electron conductivity, low costs, and facile synthesis. 212,213 One representative study was carried out by Yang and co-workers, who designed and prepared PANI nanolayer-sandwiched vertical RGO nanosheets for supporting Pd NPs (Pd/PANI@VrGO).…”

Section: Polymer-modified Porousmentioning

confidence: 99%

“…Specifically, a rational coating of functional polymers is an effective strategy to prevent reaggregation or restacking of porous nanocarbons during the synthetic process. It also activates their chemically inert surfaces to induce additional catalytic capacities. , Moreover, the rich functional groups on polymers can act as efficient anchoring sites for fixing noble-metal nanocrystals and thus ensure strong interfacial interactions between the noble metals and porous carbon carriers. , …”

Section: Application Of Noble Metal-decorated Porous Carbon Nanoarchi...mentioning

confidence: 99%

Advancements in Noble Metal-Decorated Porous Carbon Nanoarchitectures: Key Catalysts for Direct Liquid Fuel Cells

Huang,

Guo,

Zhang

et al. 2024

ACS Nano

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Noble-metal nanocrystals have emerged as essential electrode materials for catalytic oxidation of organic small molecule fuels in direct liquid fuel cells (DLFCs). However, for large-scale commercialization of DLFCs, adopting cost-effective techniques and optimizing their structures using advanced matrices are crucial. Notably, noble metaldecorated porous carbon nanoarchitectures exhibit exceptional electrocatalytic performances owing to their three-dimensional cross-linked porous networks, large accessible surface areas, homogeneous dispersion (of noble metals), reliable structural stability, and outstanding electrical conductivity. Consequently, they can be utilized to develop nextgeneration anode catalysts for DLFCs. Considering the recent expeditious advancements in this field, this comprehensive review provides an overview of the current progress in noble metal-decorated porous carbon nanoarchitectures. This paper meticulously outlines the associated synthetic strategies, precise microstructure regulation techniques, and their application in electrooxidation of small organic molecules. Furthermore, the review highlights the research challenges and future opportunities in this prospective research field, offering valuable insights for both researchers and industry experts.

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Preparation of PEDOT-modified double-layered hollow carbon spheres as Pt catalyst support for methanol oxidation

Cited by 22 publications

References 58 publications

Pt Nanoparticle-Decorated Se Rods for Electrochemical Detection of 17β-Estradiol and Methanol Oxidation

Pt Nanoparticle-Decorated Se Rods for Electrochemical Detection of 17β-Estradiol and Methanol Oxidation

A Critical Assessment on Functional Attributes and Degradation Mechanism of Membrane Electrode Assembly Components in Direct Methanol Fuel Cells

Advancements in Noble Metal-Decorated Porous Carbon Nanoarchitectures: Key Catalysts for Direct Liquid Fuel Cells

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