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The Catalytic Activity of “Naked” Gold Particles

Authors

  • Massimiliano Comotti Dr.,

    1. Dipartimento di Chimica Inorganica, Metallorganica e Analitica, CIMAINA and ISTM, University of Milano, Via Venezian 21, 20133 Milano, Italy, Fax: (+39) 02-5031-4424
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  • Cristina Della Pina Dr.,

    1. Dipartimento di Chimica Inorganica, Metallorganica e Analitica, CIMAINA and ISTM, University of Milano, Via Venezian 21, 20133 Milano, Italy, Fax: (+39) 02-5031-4424
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  • Roberto Matarrese Dr.,

    1. Dipartimento di Chimica Inorganica, Metallorganica e Analitica, CIMAINA and ISTM, University of Milano, Via Venezian 21, 20133 Milano, Italy, Fax: (+39) 02-5031-4424
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  • Michele Rossi Prof. Dr.

    1. Dipartimento di Chimica Inorganica, Metallorganica e Analitica, CIMAINA and ISTM, University of Milano, Via Venezian 21, 20133 Milano, Italy, Fax: (+39) 02-5031-4424
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  • This work was supported in part by the EC project “AURICAT”.

Abstract

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Reducing size helps to oxidize: Unsupported gold particles behave as an efficient catalyst for the aerobic oxidation of glucose, showing a similar activity to enzymatic systems. The catalytic activity is inversely proportional to the particle diameter (d, see graph). With carbon-supported gold, no gold–support interaction is found; however, the use of a support avoids particle aggregation thus preserving the original activity for longer.

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