Adsorptive and Photocatalytic Performance of TiO2/Layered Double Hydroxides in the Removal of Dimthyl Phthalate
The organic layered double hydroxides (LHDs)/TiO2 composites with various mass ratios were prepared by the reconstruction of mixed metal oxides to photodegrade dimethyl phthalate (DMP).The physicochemical properties of the obtained products were analyzed by X-ray diffraction (XRD) spectra,X-ray photoelectron spectra (XPS),UV-vis diffuse reflectance spectroscope and scanning electron microscope (SEM).The results showed that the Ti02 particles and the organic LDHs were combined together through chemical bonds,and TiO2 particles were well distributed on the surface of the interconnecting organic LDHs nano-flakes.According to the experimental results of adsorptive and photodegradation of DMP,the organic LDHs with flaky structure could effectively adsorb the DMP molecules and the adsorption isotherm by the composites modeled well with the Langmuir equation.The enrichment of DMP onto the composites and the external hydroxyl groups of the composites produce a synergistic effect leading to greatly enhance the rate of DMP photocatalytic degradation by the obtained composites.
Layered double hydroxides TiO2 XPS Adsorption Photocatalysis
HUAN Zhu-jian Ping-xiao
College of Environmental Science and Engineering,South China University of Technology,Guangzhou 5100 College of Environmental Science and Engineering,South China University of Technology,Guangzhou 5100
国内会议
第十一届全国博士生学术年会专题——节能环保与污染防治技术分会场论坛
成都
英文
147-162
2013-10-01（万方平台首次上网日期，不代表论文的发表时间）