کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1641766 | 1517225 | 2016 | 4 صفحه PDF | دانلود رایگان |
• [EMIm]NO3 has been employed to prepare BiOBr photocatalyst.
• [EMIm]NO3 increases the specific surface area and decreases the particle size.
• The photo-induced charge separation rate has been greatly increased.
• The solar-driven photocatalytic activity has been greatly promoted.
In this work, novel BiOBr photocatalyst (IL-BiOBr) with enhanced solar-driven photocatalytic activity was fabricated by a facile hydrothermal method with the assistance of ionic liquid (IL) 1-ethyl-3-methylimidazolium nitrate ([EMIm]NO3). BiOBr and IL-BiOBr were characterized by the Brunauer–Emmett–Teller (BET) method, X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), particle size analyzer and surface photovoltage spectroscopy (SPS), respectively. The results reveal that [EMIm]NO3 increases the specific surface area, decreases the particle size, and greatly enhances separation rate of the photo-induced charge of BiOBr. The photocatalytic activity of IL-BiOBr for decolorization of rhodamine B aqueous solution was evaluated. The results illustrate that the photocatalytic performance of IL- BiOBr is more than 2.3 times of that of the reference BiOBr and the possible reason was suggested.
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Journal: Materials Letters - Volume 163, 15 January 2016, Pages 175–178