Photodecomposition of dimethyl phthalate in an aqueous solution with UV radiation using novel catalysts

Abstract

2014) Photodecomposition of dimethyl phthalate in an aqueous solution with UV radiation using novel catalysts, Desalination and Water Treatment, 52:16-18, 3377-3383, A B S T R A C TThis study investigates the photolytic and photocatalytic degradation of dimethyl phthalate (DMP) with novel catalysts including the titanium dioxide-coated magnetic poly(methyl methacrylate) (TiO 2 /mPMMA) and platinum-doped TiO 2 /mPMMA microspheres. The experiments under the illumination of ultraviolet (UV) radiation at 185 and 254 nm are conducted to examine the effects of the initial DMP concentration, photocatalyst, and Pt doping on the degradation of DMP and its mineralization efficiency. The photocatalyst and initial DMP concentration are important factors for the degradation of DMP, while the Pt doping has a minor effect. On the other hand, the mineralization efficiency would be significantly accelerated by the presence of photocatalysts and the Pt doping. In addition, it demonstrates the remarkable contribution of UV radiation at 185 nm to the elimination of DMP and intermediates via both direct photolysis and photocatalysis. This study provides useful information about the direct photolytic and photocatalytic degradation of DMP using the novel photocatalysts with the presence of UV radiation at 185 nm.

Controlled synthesis of Zn(1−1.5x)FexS nanoparticles via a microwave route and their photocatalytic properties

“…1,[6][7][8][9] Recently, a great deal of attention has been paid to the photodegradation of DMP by inorganic materials, especially ZnS-based semiconductors. [10][11][12] There are many preparation methods for Fe-doped ZnS, such as hydrothermal, 13,14 microemulsion, 15 and chemical co-precipitation method. [16][17][18][19] Contrasted with the above-mentioned methods, microwave irradiation method is a environmentally friendly and economical method to synthesize materials, 20,21 probably due to its outstanding advantages of fast reaction speed and clean reaction way.…”

Decomposition and Mineralization of Dimethyl Phthalate in an Aqueous Solution by Wet Oxidation

“…It was biodegraded to monomethyl phthalate (MMP) and phthalic acid (PA) after treatment of 2.5 d [ 8 – 10 ]. Some advanced solutions were proposed such as photolysis [ 11 – 13 ], photocatalysis [ 11 – 15 ], electrochemical [ 16 , 17 ], and oxidant-added oxidation [ 11 , 14 , 18 , 19 ] methods. Most of these treatments need postbiological process to further mineralize the decomposed compounds.…”