期刊
POWDER TECHNOLOGY
卷 269, 期 -, 页码 371-378出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.powtec.2014.09.027
关键词
Cu nanoparticle; SBA-15; Organic dyes; NaBH4; Decolorization
资金
- Council of Scientific and Industrial Research (CSIR), India [02(147)/13/EMR-II]
- Council of Scientific and Industrial Research (CSIR), India
In this paper, we report a simple aqueous solution based chemical method for preparation of Cu nanoparticle loaded mesoporous silica SBA-15 (Cu@SBA-15) catalysts. Synthesized catalysts were characterized by powder X-ray diffraction (XRD), atomic absorption spectroscopy (AAS), Fourier transform infrared spectroscopy (FTIR), high resolution transmission electron microscope (HRTEM), N-2 adsorption-desorption surface area and pore size analyzer, and particle size analyzer. Catalytic activity of Cu nanoparticle loaded SBA-15 towards reduction of various dyes, such as 4-nitrophenol, Methyl Orange, Congo Red, Rhodamine B, Methylene Blue and mixture of dyes were investigated in the presence of excess NaBH4. Catalysis reactions were monitored by employing UV-vis spectroscopy. Catalysis reactions followed pseudo-first order rate equation. These catalysts exhibited excellent catalytic activity and convenient recycling. The high catalytic activity, cost effectiveness and simple preparation methodology make 12.5Cu@SBA-15 an attractive catalyst for decolorization of organic dyes. (C) 2014 Elsevier B.V. All rights reserved.
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