Silicon Nanowires as Photoelectrodes for Carbon Dioxide Fixation

Authors

  • Rui Liu,

    1. Merkert Chemistry Center, Department of Chemistry, Boston College, 2609 Beacon St., Chestnut Hill, MA 02467 (USA)
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    • These authors contributed equally to this work.

  • Guangbi Yuan,

    1. Merkert Chemistry Center, Department of Chemistry, Boston College, 2609 Beacon St., Chestnut Hill, MA 02467 (USA)
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    • These authors contributed equally to this work.

  • Candice L. Joe,

    1. Merkert Chemistry Center, Department of Chemistry, Boston College, 2609 Beacon St., Chestnut Hill, MA 02467 (USA)
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  • Dr. Thomas E. Lightburn,

    1. Merkert Chemistry Center, Department of Chemistry, Boston College, 2609 Beacon St., Chestnut Hill, MA 02467 (USA)
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  • Prof. Dr. Kian L. Tan,

    Corresponding author
    1. Merkert Chemistry Center, Department of Chemistry, Boston College, 2609 Beacon St., Chestnut Hill, MA 02467 (USA)
    • Merkert Chemistry Center, Department of Chemistry, Boston College, 2609 Beacon St., Chestnut Hill, MA 02467 (USA)===

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  • Prof. Dr. Dunwei Wang

    Corresponding author
    1. Merkert Chemistry Center, Department of Chemistry, Boston College, 2609 Beacon St., Chestnut Hill, MA 02467 (USA)
    • Merkert Chemistry Center, Department of Chemistry, Boston College, 2609 Beacon St., Chestnut Hill, MA 02467 (USA)===

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  • We thank S. Shepard and M. Miao for their technical assistance. Financial support is provided by NSF (DMR 105576 to D.W.) and in part by NIGMS (R01GM087581 to K.L.T.). Mass spectrometry instrumentation at Boston College is supported by funding from the NSF (DBI-0619576).

Abstract

original image

Lights on: When illuminated, p-type Si nanowires donate photogenerated electrons to aromatic ketones, producing reactive radicals that can harvest CO2 to yield α-hydroxy acids (see scheme). The reaction scheme closely resembles that of natural photosynthesis and gives up to 98 % yield and selectivity. Products obtained by this reaction include important precursors for nonsteroidal anti-inflammatory drugs, such as ibuprofen and naproxen.

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