Effects of adsorbed water on plasmon-based dissolution, redeposition and resulting spectral changes of Ag nanoparticles on single-crystalline TiO2

文献信息

发布日期 2008-02-25
DOI 10.1039/B719971F
影响因子 3.676
作者

Kazuki Matsubara, K. Lance Kelly, Nobuyuki Sakai


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摘要

Ag nanoparticles photocatalytically deposited on single-crystalline TiO2(111) and (100) surfaces exhibit visible light-induced topographic and spectral changes corresponding to the light wavelength. A certain amount of adsorbed water on the surface is essential for the changes. The photoinduced behaviors strongly depend on the amount of the adsorbed water and on interparticle spacing, indicating that ionic conductivity on the TiO2 surface is a key factor. The results obtained here are rationally explained in terms of a photoelectrochemical mechanism in which photoanodic dissolution of Ag nanoparticles to Ag+ and cathodic re-deposition of Ag play essential roles.

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来源期刊

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
自引率: 10.3%
年发文量: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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