Study on preparation and properties of a novel photo-catalytic material based on copper-centred metal-organic frameworks (Cu-MOF) and titanium dioxide
by Nguyen Thanh Binh; Phung Thi Thu; Ngo Thi Hong Le; Dinh Manh Tien; Hoang Thi Khuyen; Lam Thi Kieu Giang; Nguyen Thanh Huong; Tran Dai Lam
International Journal of Nanotechnology (IJNT), Vol. 12, No. 5/6/7, 2015

Abstract: A Cu3BTC2 metal-organic framework (MOF) with large specific surface area of 1350 m2/g, where BTC = benzene-1,3,5-tricarboxylate, was synthesised by hydrothermal method. It was then used as a starting material for the preparation of a novel MOF based photocatalyst containing titanium dioxide. This photocatalyst, namely, TiO2@Cu3BTC2, has been prepared by hydrolysis of titanium (IV) isopropoxide under hydrothermal condition. The synthesised materials were then characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) techniques. The photocatalytic discolouration of methylene blue dye (MB) in aqueous solution was investigated under UV-VIS light irradiation at different illumination times using the photocatalyst TiO2@Cu3BTC2 metal-organic frameworks and a control sample of commercial TiO2 nano powder (Degussa P25). It is interesting to note that TiO2@Cu3BTC2 exhibits very strong photocatalytic activity for MB discolouration, much better than lone TiO2 nano-particles P25. Thus, this novel photocatalytic material based on copper-centred MOFs may serve as an excellent class of photocatalytic materials for different environmental applications.

Online publication date: Sun, 08-Mar-2015

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