Hydrogen adsorption properties of Ag decorated TiO2 nanomaterials

• DOI: 10.1016/j.ijhydene.2017.12.080
• Publication Date: 2018-01-06T05:59:27Z
• Authors: Saravanan Rajendran; Tuan K.A. Hoang; Rabah Boukherroub; D.E. Diaz-Droguett; F. Gracia; M.A. Gracia-Pinilla; A. Akbari-Fakhrabadi; Vinod Kumar Gupta
• Keywords: Spillover; Nanocomposite; Kubas type; [CHIM]Chemical Sciences; Adsorption; [CHIM.MATE]Chemical Sciences/Material chemistry; [CHIM.CATA]Chemical Sciences/Catalysis; 02 engineering and technology; 0210 nano-technology; Hydrogen

Abstract In this work, we present the synthesis of Ag doped TiO2 materials. The products are characterized by powder X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, nitrogen adsorption, and hydrogen adsorption. The Ag/TiO2 materials exhibit 3.65 times higher in hydrogen adsorption capability compared with the non-doped TiO2 materials thank to the existence of Ti3+ species, which are Kubas-type hydrogen adsorption centers, and the Ag nanoparticles which provide spillover effects. We believe that this is the first time that both Kubas-type adsorption and spillover are exploited in the design of novel hydrogen storage materials.