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| Preparation and Photocatalytic Degradation Properties #br#of a Fe(III)-taPc/ZnO NWs/SiO2 Ternary Composite Photo-catalyst |
| LI Xuefei ZHANG Ruifeng** |
| (Faculty of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211) |
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Cite this article:
LI Xuefei, ZHANG Ruifeng. Preparation and Photocatalytic Degradation Properties #br#of a Fe(III)-taPc/ZnO NWs/SiO2 Ternary Composite Photo-catalyst. Chinese Journal of Materials Research, 2013, 27(5): 526-531.
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Abstract ZnO nanowires were prepared by crystal seed formation in situ and hydrothermal synthetic process in large-sized macroporous SiO2 materials. The nanowires are formed by wurtzite ZnO crystal with a diameter of about 15—20 nm, which display a randomly-coiled morphology, good dispersion as well as stable structure. ZnO NWs/SiO2 complex can effectively load Fe (Ш)-taPc to offer ternary composite photo-catalyst Fe(Ш)-taPc/ZnO NWs/SiO2 with a maximum loading rate(mass fraction) of 11.5%. The photo-catalyst Fe(Ш)-taPc/ZnO NWs/SiO2 was characterized by means of SEM, XRD, UV-Vis diffuse reflectance spectrometry and Raman spectrometry. The photocatalytic activity of the photocatalysts was also determined by using Rhodamine B as the objective substance. The catalyst exhibited good activity for the degradation of Rhodamine B under visible light, and the reaction followed first-order kinetic equation. The catalyst containing 3.5% of Fe(Ш)-taPc showed highest activity, and can degrade 98.6% of Rhodamine B within 60 min. The presence of ZnO NWs promoted the photocatalytic activity by an average of 77%. The activity decreased very slightly after six circular utilizations, showing that the catalyst was stable and reusable.
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