Abstract
Boron carbide: A traditional ceramic material shows unique properties when explored in nano-range. Specially designed boron-based nanocomposite has been synthesized by reflux method. The addition of SnO2 in base matrix increases the defect states in boron carbide and shows unique catalytic properties. The calculated texture coefficient and Nelson–Riley factor show that the synthesized nanocomposite has large number of defect states. Also this composite is explored for the first time for catalysis degradation of industrial used dyes. The degradation analysis of industrial pollutants such as Novacron red Huntsman (NRH) and methylene blue (MB) dye reveals that the composite is an efficient catalyst. Degradation study shows that 1 g/L catalyst concentration of B4C/SnO2 degrades NRH and MB dye up to approximately 97.38 and 79.41%, respectively, in 20 min under sunlight irradiation. This water-insoluble catalyst can be recovered and reused.
Highlights
Dyes and pigments are extensively used in textile industries, food technology, cosmetics, paper technology, leather and plastic industries for coloring the products
The photocatalysis technology is economically viable method used for degradation of dyes at ambient conditions
X-ray diffraction (XRD) analysis confirmed the formation of B 4C and SnO2 phase in the synthesized sample
Summary
Dyes and pigments are extensively used in textile industries, food technology, cosmetics, paper technology, leather and plastic industries for coloring the products. A wide range of high temperature synthesis methods can be used for preparation of B4C nanostructures directly from boron and carbon (Hajizamani and Alizadeh 2012). These methods are economically not viable due to expensive precursors. B4C/SnO2 composite has been synthesized using wet chemical synthesis method in order to obtain the improved photocatalytic efficiency for wastewater treatment. Industrial pollutants, methylene blue (MB) and Novacron red Huntsman (NRH) dyes, were used as target materials Their degradation analysis is thoroughly studied and a proposed degradation mechanism in the light of crystal structure is presented. Similar processes were repeated for 0, 0.2 and 0.6 g/L photocatalyst dosages
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