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Zhang ZX, Liu Y, Meng WJ, Wang J, Li W, Wang H, Zhao D, Lu JX. One-pot synthesis of Ni nanoparticle/ordered mesoporous carbon composite electrode materials for electrocatalytic reduction of aromatic ketones. NANOSCALE 2017; 9:17807-17813. [PMID: 29115341 DOI: 10.1039/c7nr06602c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A simple one-pot synthesis of Ni nanoparticle/ordered mesoporous carbon composite electrode materials is demonstrated for electrosynthesis for the first time. The obtained nanocomposites have uniform mesopore sizes (3.0-3.7 nm), large specific surface areas (506-633 m2 g-1), high pore volumes (0.28-0.38 cm3 g-1), well-graphitized carbon frameworks, and uniformly dispersed Ni nanoparticles (7-15 nm) embedded in the carbon pore walls. The prepared materials show very high performance in the selective (∼84%) electrocatalytic reduction of aromatic ketones into alcohols (∼79%).
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Affiliation(s)
- Zhi-Xia Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China.
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Chadderdon XH, Chadderdon DJ, Matthiesen JE, Qiu Y, Carraher JM, Tessonnier JP, Li W. Mechanisms of Furfural Reduction on Metal Electrodes: Distinguishing Pathways for Selective Hydrogenation of Bioderived Oxygenates. J Am Chem Soc 2017; 139:14120-14128. [PMID: 28903554 DOI: 10.1021/jacs.7b06331] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Electrochemical reduction of biomass-derived platform molecules is an emerging route for the sustainable production of fuels and chemicals. However, understanding gaps between reaction conditions, underlying mechanisms, and product selectivity have limited the rational design of active, stable, and selective catalyst systems. In this work, the mechanisms of electrochemical reduction of furfural, an important biobased platform molecule and model for aldehyde reduction, are explored through a combination of voltammetry, preparative electrolysis, thiol-electrode modifications, and kinetic isotope studies. It is demonstrated that two distinct mechanisms are operable on metallic Cu electrodes in acidic electrolytes: (i) electrocatalytic hydrogenation (ECH) and (ii) direct electroreduction. The contributions of each mechanism to the observed product distribution are clarified by evaluating the requirement for direct chemical interactions with the electrode surface and the role of adsorbed hydrogen. Further analysis reveals that hydrogenation and hydrogenolysis products are generated by parallel ECH pathways. Understanding the underlying mechanisms enables the manipulation of furfural reduction by rationally tuning the electrode potential, electrolyte pH, and furfural concentration to promote selective formation of important biobased polymer precursors and fuels.
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Affiliation(s)
- Xiaotong H Chadderdon
- Department of Chemical and Biological Engineering, Iowa State University , 618 Bissell Road, Ames, Iowa 50011, United States.,US Department of Energy Ames Laboratory , 2408 Pammel Drive, Ames, Iowa 50011, United States
| | - David J Chadderdon
- Department of Chemical and Biological Engineering, Iowa State University , 618 Bissell Road, Ames, Iowa 50011, United States.,US Department of Energy Ames Laboratory , 2408 Pammel Drive, Ames, Iowa 50011, United States
| | - John E Matthiesen
- Department of Chemical and Biological Engineering, Iowa State University , 618 Bissell Road, Ames, Iowa 50011, United States.,US Department of Energy Ames Laboratory , 2408 Pammel Drive, Ames, Iowa 50011, United States.,NSF Engineering Research Center for Biorenewable Chemicals (CBiRC) , 617 Bissell Road, Ames, Iowa 50011, United States
| | - Yang Qiu
- Department of Chemical and Biological Engineering, Iowa State University , 618 Bissell Road, Ames, Iowa 50011, United States.,US Department of Energy Ames Laboratory , 2408 Pammel Drive, Ames, Iowa 50011, United States
| | - Jack M Carraher
- Department of Chemical and Biological Engineering, Iowa State University , 618 Bissell Road, Ames, Iowa 50011, United States.,NSF Engineering Research Center for Biorenewable Chemicals (CBiRC) , 617 Bissell Road, Ames, Iowa 50011, United States
| | - Jean-Philippe Tessonnier
- Department of Chemical and Biological Engineering, Iowa State University , 618 Bissell Road, Ames, Iowa 50011, United States.,US Department of Energy Ames Laboratory , 2408 Pammel Drive, Ames, Iowa 50011, United States.,NSF Engineering Research Center for Biorenewable Chemicals (CBiRC) , 617 Bissell Road, Ames, Iowa 50011, United States
| | - Wenzhen Li
- Department of Chemical and Biological Engineering, Iowa State University , 618 Bissell Road, Ames, Iowa 50011, United States.,US Department of Energy Ames Laboratory , 2408 Pammel Drive, Ames, Iowa 50011, United States
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Kashimura S, Murai Y, Tamai Y, Hirose R, Ishifune M, Iwase H, Yamashita H, Yamashita N, Kakegawa H. Preparation of novel modified electrode by anodic oxidation of carbon fiber with radical NO3 and its application to the selective reduction of acetophenone. Electrochim Acta 2001. [DOI: 10.1016/s0013-4686(01)00618-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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