文章基本信息

标题：Plasmon-enhanced light-driven water oxidation by a dye-sensitized photoanode
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作者：Degao Wang ; Benjamin D. Sherman ; Byron H. Farnum 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2017
卷号：114
期号：37
页码：9809-9813
DOI：10.1073/pnas.1708336114
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Dye-sensitized photoelectrosynthesis cells (DSPECs) provide a flexible approach for solar water splitting based on the integration of molecular light absorption and catalysis on oxide electrodes. Recent advances in this area, including the use of core/shell oxide interfacial structures and surface stabilization by atomic layer deposition, have led to improved charge-separation lifetimes and the ability to obtain substantially improved photocurrent densities. Here, we investigate the introduction of Ag nanoparticles into the core/shell structure and report that they greatly enhance light-driven water oxidation at a DSPEC photoanode. Under 1-sun illumination, Ag nanoparticle electrodes achieved high photocurrent densities, surpassing 2 mA cm⁻² with an incident photon-to-current efficiency of 31.8% under 450-nm illumination.
关键词：water oxidation ; DSPEC ; core/shell ; plasmonic ; atomic layer deposition