Abstract
This chapter introduces the synthesis of nanomaterials by solution plasma process (SPP). The SPP was used as a simple method for metal nanoparticles (NPs) synthesis, bimetallic NPs, and NPs incorporated in mesoporous silica. The SPP, which is a non-equilibrium plasma, can provide an extremely rapid reduction of a metal ion to the neutral form without using a reducing agent. Preferential oxidation (PROX) of CO is an important practical process to purify H2 for use in polymer electrolyte fuel cells. Pt NPs in mesoporous silica synthesized by the SPP give a high conversion rate at a lower temperature. Recently, we focused on developing the SPP for producing carbon materials containing heteroatom as oxygen reduction reaction (ORR) catalyst. The SPP method can produce low-cost carbon materials, in one-step process, with controllable structure.
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