Surface Plasmon-Based Nanomaterials as Photocatalyst
In recent era, plasmonic photocatalysts have facilitated rapid progress in improving the photocatalytic efficiency under visible light irradiation, increasing the prospect of using sunlight for environmental and energy applications, such as wastewater treatment, water splitting, and carbon dioxide reduction. Plasmonic photocatalysis makes use of noble metal NPs dispersed in semiconductor photocatalysts and has two prominent features, a Schottky junction and localized SPR effect. With the advances in fundamental and experimental studies on plasmon-mediated photocatalysis, the rational design and synthesis of metal/semiconductor and carbon-based hybrid nanostructures as photocatalysts have been realized. This chapter highlights a recently reported and easy methodology for the fabrication of SPR-based materials and its real developments in plasmon-mediated photocatalytic mechanisms, such as Schottky junctions, direct electron transfer, enhanced local electric field, plasmon resonant energy transfer, and scattering and heating effects. In addition, this chapter also summarizes the factors, size, shape, geometry, loading, and composition of plasmonic metal, as well as the nanostructure and properties of semiconductors that mainly affect the photodegradation of dyes. Finally, a perspective on future directions within this rich field of research is provided.
KeywordsMetal nanoparticles Au and Ag Surface plasmon resonance Visible light Photocatalysis Water treatment
This study was supported by the Priority Research Centers Program by Basic Science Research Program (Grant No: 2015R1D1A3A03018029) through the National Research Foundation of Korea (NRF) funded by the Korean Ministry of Education.
- Fuku K, Hayashi R, Takakura S, Kamegawa T, Mori K, Yamashita H (2013) The synthesis of size-and color-controlled silver nanoparticles by using microwave heating and their enhanced catalytic activity by localized surface Plasmon resonance. Angew Chem Int Ed 52(29):7446–7450. https://doi.org/10.1002/anie.201301652 CrossRefGoogle Scholar
- Kelly KL, Coronado E, Zhao LL, Schatz GC (2003) The optical properties of metal nanoparticles: the influence of size, shape, and dielectric environment. ACS Publications DOI: https://doi.org/10.1021/jp026731y
- Lettmann C, Hinrichs H, Maier WF (2001) Combinatorial discovery of new photocatalysts for water purification with visible light. Angew Chem Int Ed 40(17):3160–3164. https://doi.org/10.1002/1521-3773(20010903)40:17<3160::AID-ANIE3160>3.0.CO;2-Z CrossRefGoogle Scholar
- Muhd Julkapli N, Bagheri S, Bee Abd Hamid S (2014) Recent advances in heterogeneous photocatalytic decolorization of synthetic dyes. Sci World J 2014. https://doi.org/10.1155/2014/692307
- Priebe JB, Radnik J r, Lennox AJ, Pohl M-M, Karnahl M, Hollmann D et al (2015) Solar hydrogen production by plasmonic Au–TiO2 catalysts: impact of synthesis protocol and TiO2 phase on charge transfer efficiency and H2 evolution rates. ACS Catal 5(4):2137–2148. https://doi.org/10.1021/cs5018375 CrossRefGoogle Scholar
- Rayalu SS, Jose D, Joshi MV, Mangrulkar PA, Shrestha K, Klabunde K (2013) Photocatalytic water splitting on Au/TiO2 nanocomposites synthesized through various routes: enhancement in photocatalytic activity due to SPR effect. Appl Catal B Environ 142:684–693. https://doi.org/10.1016/j.apcatb.2013.05.057 CrossRefGoogle Scholar