Nanoporous Carbon: Liquid-Free Synthesis and Geometry-Dependent Catalytic Performance | Zendy

Ruoyu Xu | Zendy; Liqun Kang | Zendy; Johannes Knossalla | Zendy; Jerrik Mielby | Zendy; Qiming Wang | Zendy; Bolun Wang | Zendy; Junrun Feng | Zendy; Guanjie He | Zendy; Yudao Qin | Zendy; Jijia Xie | Zendy; AnnChristin Swertz | Zendy; Qian He | Zendy; Søren Kegnæs | Zendy; Dan J. L. Brett | Zendy; Ferdi Schüth | Zendy; Feng Ryan Wang | Zendy

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Nanoporous Carbon: Liquid-Free Synthesis and Geometry-Dependent Catalytic Performance

Author(s) -

Ruoyu Xu,

Liqun Kang,

Johannes Knossalla,

Jerrik Mielby,

Qiming Wang,

Bolun Wang,

Junrun Feng,

Guanjie He,

Yudao Qin,

Jijia Xie,

AnnChristin Swertz,

Qian He,

Søren Kegnæs,

Dan J. L. Brett,

Ferdi Schüth,

Feng Ryan Wang

Publication year - 2019

Publication title -

acs nano

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.554

H-Index - 382

eISSN - 1936-086X

pISSN - 1936-0851

DOI - 10.1021/acsnano.8b09399

Subject(s) - nanoporous , catalysis , materials science , carbon fibers , nanotechnology , chemical engineering , geometry , chemistry , composite material , organic chemistry , engineering , mathematics , composite number

Nanostructured carbons with different pore geometries are prepared with a liquid-free nanocasting method. The method uses gases instead of liquid to disperse carbon precursors, leach templates, and remove impurities, minimizing synthetic procedures and the use of chemicals. The method is universal and demonstrated by the synthesis of 12 different porous carbons with various template sources. The effects of pore geometries in catalysis can be isolated and investigated. Two of the resulted materials with different pore geometries are studied as supports for Ru clusters in the hydrogenolysis of 5-hydroxymethylfurfural (HMF) and electrochemical hydrogen evolution (HER). The porous carbon-supported Ru catalysts outperform commercial ones in both reactions. It was found that Ru on bottleneck pore carbon shows a highest yield in hydrogenolysis of HMF to 2,5-dimethylfuran (DMF) due to a better confinement effect. A wide temperature operation window from 110 to 140 °C, with over 75% yield and 98% selectivity of DMF, has been achieved. Tubular pores enable fast charge transfer in electrochemical HER, requiring only 16 mV overpotential to reach current density of 10 mA·cm -2 .

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