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A Perspective on the Flame Spray Synthesis of Photocatalyst Nanoparticles
Clean Energy and Nanotechnology (CLEAN) Laboratory, School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
Received: 3 June 2013; in revised form: 6 July 2013 / Accepted: 8 July 2013 / Published: 31 July 2013
Abstract: The synthesis of functional nanoparticles via one-step flame spray pyrolysis (FSP), especially those of catalytic nature, has attracted the interests of scientists and engineers, as well as industries. The rapid and high temperature continuous synthesis yields nanoparticles with intrinsic features of active catalysts, that is, high surface area and surface energetics. For these reasons, FSP finds applications in various thermally inducible catalytic reactions. However, the design and synthesis of photocatalysts by FSP requires a knowledge set which is different from that established for thermal catalysts. Unknown to many, this has resulted in frustrations to those entering the field unprepared, especially since FSP appears to be an elegant tool in synthesising oxide nanoparticles of any elemental construct. From simple oxide to doped-oxide, and mixed metal oxide to the in situ deposition of noble metals, this Perspective gives an overview on the development of photocatalysts made by FSP in the last decade that led to a better understanding of the design criteria. Various challenges and opportunities are also highlighted, especially those beyond simple metal oxides, which perhaps contain the greatest potential for the exploitation of photocatalysts design by FSP.
Keywords: flame synthesis; photocatalysis; semiconductor; nanoparticle; mixed oxides
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MDPI and ACS Style
Teoh, W.Y. A Perspective on the Flame Spray Synthesis of Photocatalyst Nanoparticles. Materials 2013, 6, 3194-3212.
Teoh WY. A Perspective on the Flame Spray Synthesis of Photocatalyst Nanoparticles. Materials. 2013; 6(8):3194-3212.
Teoh, Wey Y. 2013. "A Perspective on the Flame Spray Synthesis of Photocatalyst Nanoparticles." Materials 6, no. 8: 3194-3212.