Design and fabrication of integral carbon monoliths combining 3D printing and sol–gel polymerization: effects of the channel morphology on the CO-PROX reaction

Chaparro-Garnica, Cristian Yesid; Bailón‐García, Esther; Lozano‐Castelló, Dolores; Bueno‐López, Agustín

doi:10.1039/d1cy01104a

Cited by 10 publications

(8 citation statements)

References 27 publications

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“…This high oxidation resistance coupled with their textural properties (broad macropores) suggests that the 3D-printed biobased carbon monoliths could be interesting catalyst supports for the preferential oxidation of carbon monoxide (CO–PrOx) such as those demonstrated by Chaparro-Garnica et al − The monoliths presented in this work are even more versatile, allowing for greater freedom of architecture, a wide range of porosity, and a reduction in the number of steps to obtain the carbon support.…”

Section: Resultsmentioning

confidence: 75%

3D-Printed Carbons with Improved Properties and Oxidation Resistance

Blyweert

Nicolas

Fierro

et al. 2023

ACS Sustainable Chem. Eng.

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In this paper, we show the preparation and characteristics of new 3D-printed porous carbons obtained by stereolithography (SLA) of a precursor resin followed by heat treatment. Their physical and textural properties can be tuned by using chemically modified biobased aromatic precursors as monomers. Thus, vanillin and polyflavonoids such as mimosa tannins can be used together as building blocks for SLA materials when functionalized with methacrylate groups by a solvent-free technique and mixed with a photosensitive resin. Adjusting the photosensitive formulations led to high thermal stability and an increase in carbon yield of up to 27%. The corresponding dense porous carbon materials showed outstanding mechanical properties, far exceeding those of other SLA-printed carbons and carbon foams, and a very low surface area, which improves their oxidation resistance compared to acrylate−tannin-derived carbon or activated carbons. This new approach to architecturally engineered carbons with tailored properties can therefore be used for the promising design of catalyst supports or sodium-ion batteries.

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Section: Resultsmentioning

confidence: 75%

3D-Printed Carbons with Improved Properties and Oxidation Resistance

Blyweert

Nicolas

Fierro

et al. 2023

ACS Sustainable Chem. Eng.

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“…In that respect, Chaparro et al [ 169 ] compared a carbon monolith of interconnected crisscrossed channels (that split and join successively along the structure as shown in Figure 30f) with a carbon monolith of conventional straight channels to analyze the influence of the channel geometry on their catalytic performance. The carbon monoliths were used as supports of Cu/CeO 2 active phase in the preferential oxidation of CO in the presence of H 2 .…”

Section: Structure Geometry Effectmentioning

confidence: 99%

“…The latter option has already been studied for the synthesis of carbonous and ceramic catalyst. In this regard, Chaparro et al [16,169,170] proposed a strategy that combines the FDM and sol-gel polymerization processes, which has enabled the obtention of integral carbon monoliths with complex channel architecture and tailorable porosity. The influence of the channel geometry and carbon porosity on CuO/CeO 2 catalytic performance was identified with the CO-PrOx reaction.…”

Section: Fused Deposition Modelingmentioning

confidence: 99%

Revolutionizing Monolithic Catalysts: The Breakthroughs of Design Control through Computer‐Aided‐Manufacturing

Parra‐Marfil,

Pérez‐Cadenas,

Carrasco‐Marín

et al. 2024

Adv Materials Technologies

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Additive manufacturing (AM) presents a promising opportunity for the innovative design and production of structured catalytic materials. Given the critical role of catalysts in industrial catalytic processes, AM has the potential to contribute to the development of improved catalysts by reducing activation energy and enhancing selectivity. Conventional synthesis methods limit the choice of structural materials and composition for producing monoliths. Additionally, the deposition of catalytic compounds is also restricted by commonly applied techniques that may require prior coverage or treatments to improve adherence or do not achieve a homogenous coat. Moreover, production is limited to monoliths with straight and parallel channels. However, this format drives to laminar regime flow thus restricting the radial mass and heat transfer. Conversely, AM allows the production of a wider variety of compositions and more complex structures that have proven to rise their effectiveness by increasing reagents‐catalyst interaction, making catalytic processes more cost‐effective. Therefore, in this review an outline of the recent progress of AM methods in the development of monolithic catalysts is presented focusing on the requirements, advantages, and disadvantages of each technique, hence providing a practical overview of their novel opportunities to overcome current limitations in catalyst synthesis.

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“…Moreover, new designs and improved performances are achieved with new classes of photocurable composite resins based on nanomaterials [ 25 , 26 , 27 ] outlining a promising approach for portable flexible electronics. Moreover, the huge number of printable materials and printing techniques available on the market provide the possibility to manufacture complex 3D structures with attractive electrical [ 24 ], chemical [ 28 ], and morphological [ 20 , 29 ] properties. As regards the materials, a large and growing body of literature has investigated their role in SCs fabrication [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

3D Printed Supercapacitor Exploiting PEDOT-Based Resin and Polymer Gel Electrolyte

et al. 2023

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Renewable energy-based technologies and increasing IoT (Internet of Things) objects population necessarily require proper energy storage devices to exist. In the view of customized and portable devices, Additive Manufacturing (AM) techniques offer the possibility to fabricate 2D to 3D features for functional applications. Among the different AM techniques extensively explored to produce energy storage devices, direct ink writing is one of the most investigated, despite the poor achievable resolution. Herein, we present the development and characterization of an innovative resin which can be employed in a micrometric precision stereolithography (SL) 3D printing process for the fabrication of a supercapacitor (SC). Poly(3,4-ethylenedioxythiophene) (PEDOT), a conductive polymer, was mixed with poly(ethylene glycol) diacrylate (PEGDA), to get a printable and UV curable conductive composite material. The 3D printed electrodes were electrically and electrochemically investigated in an interdigitated device architecture. The electrical conductivity of the resin falls within the range of conductive polymers with 200 mS/cm and the 0.68 µWh/cm2 printed device energy density falls within the literature range.

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Design and fabrication of integral carbon monoliths combining 3D printing and sol–gel polymerization: effects of the channel morphology on the CO-PROX reaction

Abstract: A new method to synthesize integral carbon monoliths with controlled channels morphology has been developed in this work by combining 3D-printing technology and sol-gel polymerization. By this method, robust and...

Cited by 10 publications

References 27 publications

3D-Printed Carbons with Improved Properties and Oxidation Resistance

3D-Printed Carbons with Improved Properties and Oxidation Resistance

Revolutionizing Monolithic Catalysts: The Breakthroughs of Design Control through Computer‐Aided‐Manufacturing

3D Printed Supercapacitor Exploiting PEDOT-Based Resin and Polymer Gel Electrolyte

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