DataVXACS Energy LettersPaper
journal article·2021-05-14

Synergistic Photochemistry of Alcohols Catalyzed by Plasmonic Nanoparticles and a Metal Complex

Varun Mohan, Eric Wu, Jaeyoung Heo, Ankita Das, Prashant K. Jain

ACS Energy Letters· Volume 6· Issue 5
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Source abstract

Abstract

In photocatalytic schemes, it is common practice to employ a sacrificial agent for scavenging photogenerated holes and enhancing the yield and efficiency of electron harvesting. However, little attention is paid to the chemistry triggered by hole-mediated oxidation. Here, we trace the chemical fate of aliphatic alcohols used as hole scavengers in the photoinduced synthesis of Au nanoparticles. Under the action of visible light and the [AuCl4]− precursor, the alcohol undergoes a sequence of reactions, including oxidation, C–C bond scission, and chlorination, to form a chloroalkane and a carbonyl compound. Mechanistic and parametric studies show that this atypical chemistry is activated by the Lewis-acidic metal center of [AuCl4]− and enhanced by photoexcited carriers generated by interband excitation of Au nanoparticles. This work presents a unique example of interplay between a heterogeneous photocatalyst and a metal complex. Exploiting such synergy can be a route to new catalytic reactions.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Copper-based nanomaterials and applications · Advanced Photocatalysis Techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States

Department of Chemical Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States

Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States

Materials Research Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States

Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States

Department of Physics, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States

Funding

Energy and Biosciences Institute · Frederick-Seitz Materials Research Lab, University of Illinois

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