Synthesis of mesoporous carbon spheres <i>via</i> a soft-template route for catalyst supports in PEMFC cathodes

Javed, Hassan; Pani, Shubashree; Antony, Jithin; Mariappan, S. V. Santhana; Drillet, Jean‐François

doi:10.1039/d1sm00450f

Cited by 12 publications

(17 citation statements)

References 35 publications

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“…In the soft-templating method, amphiphilic molecules (surfactant molecules or block copolymers, metal organic frameworks), which act as the templates, are first self-assembled with carbon precursor molecules, through hydrogen bonds or other interactions. Subsequently, the amphiphilic molecules can be removed through the calcination process at high temperatures to generate mesopore structures with high controllability in the pore structures and dimensions [49]. In this approach, templates act mainly as molds for the replication of mesoporous carbon materials.…”

Section: Template Methodsmentioning

confidence: 99%

Mesoporous Carbon-Based Materials: A Review of Synthesis, Modification, and Applications

Mehdipour‐Ataei

Aram

2022

Catalysts

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Mesoporous carbon materials have attracted both academic and industrial interests because of their outstanding physical and chemical properties, such as high surface area, large pore-volume, good thermostability, improved mass transport, and diffusion. Mesoporous carbon materials with various pore sizes and pore structures can be synthesized via different methods. Their unique properties have made them a suitable choice for various applications, such as energy-storage batteries, supercapacitors, biosensors, fuel cells, adsorption/separation of various molecules, catalysts/catalyst support, enzyme immobilization, and drug delivery, in different fields. This review covers the fabrication techniques of mesoporous carbon structures and their typical applications in various fields and features a brief introduction of the functionalization and modification of mesoporous carbons.

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Section: Template Methodsmentioning

confidence: 99%

Mesoporous Carbon-Based Materials: A Review of Synthesis, Modification, and Applications

Mehdipour‐Ataei

Aram

2022

Catalysts

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“…higher temperatures [81] . The final peak at 406 eV is ascribed to the N‐ Oxide with a small fraction of NO 3 − /NO 2 groups [29] . The total N amount in selected samples of each species is mentioned in Table 7.…”

Section: Resultsmentioning

confidence: 99%

“…The investigation of Pt/C activity for oxygen reduction reaction (ORR) was performed with a 0.205 cm 2 rotating glassy carbon disk and Pt ring electrode (RRDE, Pine Research Instrumentation). The ink suspension was prepared similar to our earlier work [29] . For the preparation of the ink suspension, 2 mg of Pt/C powder was first dispersed in a mixture of ultrapure water and isopropanol followed by addition of Nafion solution (5 wt%) into the formed suspension, which were finally loaded onto the electrode.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of Highly Active and Stable Carbon by a Soft‐Template Hydrothermal Route as Pt Substrate for Oxygen Reduction Reaction

2023

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N-doped mesoporous carbon spheres were synthesized by a microwave-assisted ammonia-catalyzed hydrothermal route (C FAHM ) by using Pluronic® F127 as a soft-template and m-Aminophenol as both carbon and nitrogen source. Their physical and electrochemical properties were compared with those of carbon samples obtained by a conventional hydrothermal method (C FAH ). The best results in terms of particle size, surface area, pore size distribution, conductivity and N-content of the as-prepared C FAHM samples were obtained in 17 M NH 4 OH at 120 °C for 5 min. After 1100 °C pyrolysis step, conductivity of C FAHM increased to 5.64 S cm À 1 compared to 8.64 S cm À 1 for C FAH sample. Remarkably, GDE experiments with xylene-swelled C FAHM -supported platinum exhibited an excellent activity for ORR (181 mA cm À 2 @ 0.7 V) and ECSA retention (80 % after 10,000 ADT) under half-cell conditions in 1 M H 2 SO 4 at room temperature compared to only 57 mA cm À 2 and 13 % for GDE with Pt/C Vulcan reference material.

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“…Furthermore, there was approximately 40% domain spacing reduction among all samples from the as-cast state to the carbonized state, suggesting a remarkable degree of framework shrinkage under the high temperature pyrolysis step. Notably, MCs derived from Pluronic/resol systems have now been extensively studied and employed in various applications, including but not limited to, energy storage, 87,88 water purification, 89,90 separation membranes, 91,92 photovoltaics, 93,94 capacitors, 95,96 catalyst supports, 97,98 and gas capture. 29,99 Furthermore, this system was extended to the tri-constituent co-assembly of Pluronic/ resol/tetraethyl orthosilicate (TEOS) for preparing MCs with enhanced surface area.…”

Section: Linear Block Copolymer Templatesmentioning

confidence: 99%

Mesoporous carbons from self‐assembled polymers

Robertson

Zagho

Nazarenko

et al. 2022

Journal of Polymer Science

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Polymer self-assembly provides a robust and cost-efficient nanomanufacturing platform for enabling a broad range of applications, such as microelectronics, drug delivery, and separation membranes. This review focuses on discussing the progress and opportunities of self-assembled polymer in the synthesis of mesoporous carbons (MCs), which have aroused significant research interests over the past decades. Specifically, we will discuss the two most established approaches for converting nanostructured polymers to MCs, including templating-based and direct pyrolysis-based methods. We will also review the fundamental ordering mechanisms and kinetics of these polymeric systems and discuss the recent development of engineering methods for providing ondemand control over the pore size and morphology of MCs. Additionally, this review article also includes a section focusing on the strategies to further functionalize these materials from self-assembled polymers to enhance their performance, such as chemical activation, heteroatom doping, introduction of nanoparticles into the carbon matrix, and enhancing graphitization degree of carbon walls. Finally, a brief perspective is provided about the emerging research opportunity in this exciting field.

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Synthesis of mesoporous carbon spheres via a soft-template route for catalyst supports in PEMFC cathodes

Abstract: Synthesis of carbon spheres via soft-template route should be further improved for industrial applications especially in terms of time, cost and scalability. The present work reports on relative fast production...

Cited by 12 publications

References 35 publications

Mesoporous Carbon-Based Materials: A Review of Synthesis, Modification, and Applications

Mesoporous Carbon-Based Materials: A Review of Synthesis, Modification, and Applications

Synthesis of Highly Active and Stable Carbon by a Soft‐Template Hydrothermal Route as Pt Substrate for Oxygen Reduction Reaction

Mesoporous carbons from self‐assembled polymers

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