کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
150629 456454 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photocatalytic degradation of organic contaminants by TiO2/sepiolite composites prepared at low temperature
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Photocatalytic degradation of organic contaminants by TiO2/sepiolite composites prepared at low temperature
چکیده انگلیسی

The TiO2/sepiolite composites were successfully prepared by a facile and low-cost sol–gel technique at low temperature, using TiCl4 as a precursor. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), high-resolution transmission electron microscopy (HRTEM), UV–vis diffuse reflectance spectrum (UV–vis DRS), N2 adsorption–desorption and Fourier transform infrared (FT-IR) spectroscopy. The results showed that the ordered structure of sepiolite in the as-prepared samples was destroyed to some extent and the particle sizes of TiO2 in the composites were less than 10 nm. The as-prepared samples showed an efficient photocatalytic activity for the degradation of acid red G (ARG) and 4-nitrophenol (4-NP) under UV light irradiation, which could be attributed to the synergetic effect of the large specific surface area of the TiO2/sepiolite composites and the anatase phase of TiO2 in it.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 173, Issue 1, 1 September 2011, Pages 1–10
نویسندگان
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