alexa Fabrication of TiO2 MoS2@zeolite photocatalyst and its photocatalytic activity for degradation of methyl orange under visible light.
Materials Science

Materials Science

Research & Reviews: Journal of Material Sciences

Author(s): Weiping Zhang, Xinyan Xiao, Lili Zheng, Caixia Wan

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TiO2/[email protected] composite photocatalysts with visible-light activity were fabricated via a simple ultrasonic-hydrothermal synthesis method, using TiCl4 as Ti source, MoS2 as a direct sensitizer, glycerol water solution with certain dispersion agent as hydrolytic agent, and zeolite as carrier. The structure, morphology, composition, optical properties, and specific surface area of the as-prepared photocatalysts were characterized by using XRD, FTIR, SEM–EDS, TEM, XPS, UV–vis, PL and BET analyzer, respectively. And the photocatalytic degradation of methyl orange (MO) in aqueous suspension has been employed to evaluate the photocatalytic activity and degradation kinetics of as-prepared photocatalysts with xenon lamp as irradiation source. The results indicate that: (1) TiO2/[email protected] composite photocatalysts exhibit enhanced photocatalytic activities for methyl orange (MO) degradation compared to Degussa P25; (2) photocatalytic degradation of MO obeys Langmuir–Hinshelwood kinetic model (pseudo-first order reaction), and its degradation rate constant (kapp) (2.304 h−1) is higher than that of Degussa P25 (0.768 h−1); (3) the heterostructure consisted of zeolite, MoS2 and TiO2 nanostructure could provide synergistic effect for degradation of MO due to the efficient electron transfer process and better absorption property of TiO2/[email protected] composite photocatalyst.

This article was published in Appl Surf Sci and referenced in Research & Reviews: Journal of Material Sciences

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