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Supermicroporous Silica Nanograins: Synthesis and Application
- Kitamura, Riku, Watanabe, Hiroto, Oaki, Yuya, Imai, Hiroaki
- Langmuir 2019 v.35 no.16 pp. 5594-5598
- cationic surfactants, micropores, photocatalysis, polyethylene glycol, quantum dots, silica, tungsten oxide
- Supermicroporous silicas having micropores 1–2 nm in diameter were miniaturized to 30–40 nm in diameter using a combination of binary organic agents: cationic surfactant as a porogen and polyethylene glycol as a growth suppressor in a concentrated system. The miniaturized nanograins of the porous silica were effective as a porous and transparent matrix for WO₃ quantum dots that exhibit enhanced photocatalytic activity.