Rational Synthesis Pathway for Ordered Mesoporous Carbon with Controllable 30‐ to 100‐Angstrom Pores

Lee, Hyung Ik; Kim, Jin Hoe; You, Dae Jong; Lee, Ji Eun; Kim, Ji Man; Ahn, Wha‐Seung; Pak, Chanho; Joo, Sang Hoon; Chang, Hyuk; Seung, Doyoung

doi:10.1002/adma.200702209

Cited by 85 publications

(42 citation statements)

References 46 publications

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“…Very recently, Cho et al [69] reported that the support of platinum catalyst with carbon in the cathode of DMFC can improve its methanol tolerance. Thus, the development of novel supported catalysts using advanced carbon supports is one of the possible candidates for reducing the methanol crossover in DMFC [70,71]. In another work, MPc species were incorporated into mesoporous silica by direct synthesis techniques using some surfactants as structure directing agents [72].…”

Section: Methodsmentioning

confidence: 99%

Electrocatalytic Performances of Carbon Supported Metallophthalocyanine and Pt/Metallophthalocyanine Catalysts Towards Dioxygen Reduction in Acidic Medium

et al. 2009

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Electrocatalytic performances of phthalocyanines (Pcs) involving N-benzyl-4-phenyloxyacetamide moieties, dispersed on a high-surface area carbon substrate, Vulcan XC-72 (VC) and Nafion (Nf), towards oxygen reduction in acidic medium were determined and compared. The VC/Nf/CoPc(5) catalyst showed much higher catalytic activity than those of the other Pc(1-4)-based catalysts (H 2 Pc 1, ZnPc 2, NiPc 3 and CuPc 4) and that of unsubstituted CoPc-based one. The comparison of the performance of VC/Nf/Pt-5 dual catalyst with that of VC/ Nf/Pt one indicated that the former can be a good alternative to the latter as a cathode catalyst both in direct methanol and H 2 /O 2 fuel cell applications.

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Section: Methodsmentioning

confidence: 99%

Electrocatalytic Performances of Carbon Supported Metallophthalocyanine and Pt/Metallophthalocyanine Catalysts Towards Dioxygen Reduction in Acidic Medium

et al. 2009

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“…For example, bimodal mesoporous carbon materials, such as OMC material constructed with nanopipes [17,48], dual porous OMC material via a dual templating route [23,51,[58][59][60][61][62], and precise control of mesoporosity by spontaneous phase separation [63] have been reported. The CMK-5 material that has a hexagonally ordered array of amorphous carbon nanopipes shows two maxima in pore size distributions, one at 5.9 nm from the pores inside the nanopipes and the other at 4.2 nm from the pores between the adjacent nanopipes.…”

Section: Characteristics Of Mesoporous Carbonmentioning

confidence: 99%

“…Very recently, a rational synthesis pathway for OMC materials with controllable 3 to 10 nm pores has been reported by Kim and coworkers [63]. This new synthesis strategy to precisely control the pore sizes of OMC materials uses an inorganic pore expanding agent such as boric acid during the infiltration of carbon precursors within the mesopores of silica template.…”

Section: Characteristics Of Mesoporous Carbonmentioning

confidence: 99%

Mesoporous Carbon‐Supported Catalysts for Direct Methanol Fuel Cells

Pak

Kim

Chang

2009

Electrocatalysis of Direct Methanol Fuel Cells

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Recent developments in information technology and convergence of multifunctions in personal mobile devices have caused an increase of more than 350 times in consumption of per-person portable power in the last two decades and this is expected to exceed 10 000 Wh/year/person at 2010 as listed in Table 9.1. In addition, recently developed 4G mobile devices will require advanced functions such as fast exchanging data, mobile internet, digital mobile broadcasting, which demand more power and energy capacity (Table 9.2). To overcome these issues, new concepts of portable power source are required, and the direct methanol fuel cell (DMFC) is one of the most promising candidates owing to its high energy capacity as well as quick charging time of methanol liquid fuel.To increase the competitiveness of the DMFC system to the current technology of Li-ion battery, there are many requirements such as low cost, small volume and high energy efficiency, energy density and power density. Especially to mitigate the cost issue, the amount of Pt catalyst in the electrode should be reduced by increasing the activity of catalyst itself and/or the utilization ratio of Pt in the electrode. Finding more active element or alloys than Pt, which has been the most active component for several decades, is very challenging. Relatively, improving Pt use is easier due to versatility of methods of increasing the use of catalytic nanoparticles. As a simple approach, using a carbon support, the dispersion of catalyst can be increased or its size can be reduced to increase exposed surface areas of the active components. Among the various carbon supports, mesoporous carbon (MC), defined by the size of pore inside the carbon particles, is dealt with in view of novel support for electrocatalyst in this chapter. We introduce MC in Section 9.2, in which the concept, preparation and characteristics of MC are presented. As a preparation method, both the hard-templating and soft-templating methods are discussed. In Section 9.3, the preparation and characterization methods for supported catalysts using MC are covered. Examples of the application and approaches of MC for DMFC catalysts Electrocatalysis of Direct Methanol Fuel Cells. Edited

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“…In the present work, OMC-MSU-H was synthesized using a 2D hexagonally mesoporous silica MSU-H as the hard template and sucrose as the carbon precursor. Compared with other mesoporous silicas such as SBA-15 or MCM-41, MSU-H possesses a large two dimensional pore channels, which is beneficial for carbon infiltration and adjustability of carbon pore sizes [40]. Nafion, a kind of sulfonated tetrafluoroethylene based polymeric binder is promising to immobilize the as-synthesized OMC-MSU-H onto a stainless steel wire to form an SPME coating due to its unique properties such as high thermal and mechanical stability [41], excellent protonic conductivity [42], and good affinity towards polar analytes [43].…”

Section: Introductionmentioning

confidence: 99%

Ordered mesoporous carbon/Nafion as a versatile and selective solid-phase microextraction coating

Zeng

Zhao

Chen

et al. 2014

Journal of Chromatography A

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Rational Synthesis Pathway for Ordered Mesoporous Carbon with Controllable 30‐ to 100‐Angstrom Pores

Cited by 85 publications

References 46 publications

Electrocatalytic Performances of Carbon Supported Metallophthalocyanine and Pt/Metallophthalocyanine Catalysts Towards Dioxygen Reduction in Acidic Medium

Electrocatalytic Performances of Carbon Supported Metallophthalocyanine and Pt/Metallophthalocyanine Catalysts Towards Dioxygen Reduction in Acidic Medium

Mesoporous Carbon‐Supported Catalysts for Direct Methanol Fuel Cells

Ordered mesoporous carbon/Nafion as a versatile and selective solid-phase microextraction coating

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