Fabrication of CdSe/CaTiO3 nanocomposties in aqueous solution for improved photocatalytic hydrogen production

By Han, Jishu; Liu, Ying; Dai, Fangxu; Zhao, Ruiyang; Wang, Lei
Published in Applied Surface Science 2018

Abstract

Novel CdSe/CaTiO3 nanocomposites are prepared in aqueous phase and used for photocatalytic hydrogen production. The modification of CdSe QDs on the surface of CaTiO3 sheet-like structure effectively increases visible light absorption of nanocomposites, improves the separation and transfer of photoinduced electrons and prevents the recombination of electron-hole pairs. Experimental results show that obtained CdSe/CaTiO3 nanocomposites possess significantly enhanced photocatalytic hydrogen production performance. The photocatalytic hydrogen production amount of CdSe/CaTiO3 is 48 times higher than that of pure CaTiO3 and 4.14 times higher than that of CdSe QDs. Meanwhile, CdSe/CaTiO3 nanocomposites display high stability and recyclability, which is beneficial for photocatalytic hydrogen production application.

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