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首页> 外文期刊>Environmental Engineering Science >Microwave-Assisted Photocatalytic Degradation of Dimethyl Phthalate Over a Novel ZrOx Catalyst
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Microwave-Assisted Photocatalytic Degradation of Dimethyl Phthalate Over a Novel ZrOx Catalyst

机译：新型ZrOx催化剂上的微波辅助光催化降解邻苯二甲酸二甲酯

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摘要

A novel microwave-assisted photocatalytic active ZrOx catalyst, which has mix-valences and wide bandgap, has been prepared by cetyltrimethylammonium bromide–assisted hydrothermal method. Structural and optical properties were characterized by X-ray photoelectron spectroscopy, X-ray diffraction, transmission electron microscopy, N2 adsorption–desorption, and UV–vis techniques. Total organic carbon (TOC) removal of dimethyl phthalate (DMP) (100 mL, 50 mg L−1) with 1 g L−1 ZrOx approached 84% after a 30-min reaction, which was about 15% and 11% higher than ZrO2 and P25 TiO2, respectively. TOC removal of DMP by microwave-assisted photocatalytic process followed pseudo–first-order kinetics in all cases, and ZrOx evidently accelerated the degradation of DMP. Degradation half-life time of DMP using ZrOx was shortened 43% and 34%, compared with ZrO2 and P25 TiO2, respectively. A possible catalytic mechanism of ZrOx was proposed based on microwave response and interfacial charge transfer analyses. Further research on ZrOx may develop a promising new generation of highly efficient catalysts for the microwave-assisted photocatalytic process for environmental remediation.
机译：十六烷基三甲基溴化铵辅助水热法制备了一种新型的具有混合价和宽带隙的微波辅助光催化活性ZrOx催化剂。结构和光学特性通过X射线光电子能谱，X射线衍射，透射电子显微镜，N2吸附-解吸和UV-vis技术进行表征。在30分钟的反应后，用1微克L-1 ZrOx去除邻苯二甲酸二甲酯（DMP）（100μmL，50微克L-1）的总有机碳（TOC）达到84％，分别比15％和11％高ZrO2和P25 TiO2。在所有情况下，微波辅助光催化过程中TOC去除DMP均遵循拟一级动力学，ZrOx明显加速了DMP的降解。与ZrO2和P25 TiO2相比，使用ZrOx降解DMP的降解半衰期分别缩短了43％和34％。基于微波响应和界面电荷转移分析，提出了ZrOx可能的催化机理。对ZrOx的进一步研究可能会开发出一种有前途的新一代高效催化剂，用于微波辅助光催化过程中的环境修复。

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