DataVXACS Energy LettersPaper
journal article·2018-01-12Open access

Dye-Sensitized Photocatalytic Hydrogen Generation: Efficiency Enhancement by Organic Photosensitizer–Coadsorbent Intermolecular Interaction

Norberto Manfredi, Matteo Monai, Tiziano Montini, Francesco Peri, Filippo De Angelis, Paolo Fornasiero, Alessandro Abbotto

ACS Energy Letters· Volume 3· Issue 1
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Source abstract

Abstract

Dye-sensitized photocatalytic H2 generation has been investigated using a metal-free phenothiazine-based donor–acceptor sensitizer (PTZ-GLU) in combination with coadsorbents. The coadsorption of the PTZ-GLU dye, functionalized with a glucose end-group, in combination with a glucose-based coadsorbent, afforded improved photocatalytic activity compared to the absence of coadsorbents, to the use of a conventional (chenodeoxycholic acid) coadsorbent, or by replacing the dye glucose functionality with an alkyl chain. The results suggest the strategic role of directional intermolecular dye–coadsorbent interactions on the semiconductor surface, as confirmed by first principles computational modeling, which likely suppressed detrimental recombination processes.
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Research context

Electronic materialsCatalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Advanced Nanomaterials in Catalysis · TiO2 Photocatalysis and Solar Cells

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

Affiliations

Department of Materials Science and Solar Energy Research Center MIB-SOLAR, University of Milano-Bicocca and INSTM Milano-Bicocca Research, Via Cozzi 55, I-20125 Milano, Italy

Department of Chemical and Pharmaceutical Sciences, INSTM Trieste Research Unit and ICCOM-CNR Trieste Research Unit, University of Trieste, via L. Giorgieri 1, I-34127 Trieste, Italy

Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, 20126 Milano, Italy

Istituto CNR di Scienze e Tecnologie Molecolari (CNR-ISTM), Department of Chemistry, University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy

D3-Computation, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy

Funding

Universit? degli Studi di Milano-Bicocca

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