Application of metal nanoparticles with surface plasmon resonance in water splitting
YANG Dequan
YANG Rui
TANG Dafu
LIU Bingxin
DUAN Junyuan
Abstract：The principle of photocatalytic water splitting, the concept of Schottky junction and surface plasmon resonance, and the working mechanisms of plasmonic metal over water splitting were described.The research progress of Au and Ag based semiconductor photocatalysts, series of silver compounds and non-noble metal based semiconductor photocatlysts were systematically introduced.The improved photocatalytic performance for the metal nanoparticles can be attributed to the following two issues.First, the work function of metal is larger than that of semiconductor, and the formation of Schottky junction can realize the spatial transfer of photo-excited-charge carriers.Second, the local surface plasmon resonance effect can expand the spectral absorption, enhance the charge separation efficiency by means of plasmon induced resonance energy transfer, enlarged local electromagnetic field, and the energetic hot electrons injection mechanism, and so on.Although much progress has been reported, plasmonic photocatalysis is still in an early stage.There are still some unsolved problems in this field.It mainly focuses on the precious metals Au and Ag and so forth.Their working principle needs to be further studied.The combination of theory and experiment, the development of cheap non-precious metal substitutes are of the urgent expectation.
Keywords：photocatalytic water splittingsurface plasmon resonanceSchottky junctionplasmonic photocatalysisnobel metal
Publication Date：2019-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 7-13 )