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Synthesis of ZnTiO3/tourmaline/Ni foam catalyst and enhanced photocatalytic performance
Institution:1. School of Food Science and Engineering, Harbin University of Commerce, Harbin 150076, PR China;2. Research Center on Life Sciences and Environmental Sciences, Harbin University of Commerce, Harbin 150076, PR China
Abstract:ZnTiO3/tourmaline loaded on the nickel foam (ZnTiO3/tourmaline/Ni-foam) is prepared by a facile coating method. Morphology and structure of the photocatalyst were characterized by X-ray diffraction (XRD), scanning electrons microscopy (SEM), raman spectroscopy, UV–vis diffuse reflectance spectrum (UV–vis DRS) and photoluminescence spectroscopy (PL). The photocatalytic properties of the materials were tested by using the Rhodamine B (RhB) solution as the target pollutant. The results indicates that the ZnTiO3/tourmaline/Ni foam exhibited higher photocatalytic activity than that of ZnTiO3 and ZnTiO3/Ni foam under ultraviolet (UV) light irradiation, and its degradation rate was up to 99.2%. Moreover, the degradation rate remained at 91.3% after eight consecutive photocatalytic reaction cycles. The outstanding photocatalytic performances of ZnTiO3/tourmaline/Ni foam was mainly attributed to the existence of tourmaline, which can help to inhibit the recombination of electron-hole paris, and the proper pore structure of the carrier. Meanwhile, the trapping experiments indicated that ·O2 was the main active species in the photocatalytic degradation of RhB.
Keywords:Tourmaline  Ni foam  Photocatalysis
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