This study shows a preparation and evaluation of a new non-expensive TiO 2 based photocatalyst built over sand grains surfaces as an alternative green technology for water treatment. The semiconductor covalently bonded to the silica sand grains (sand@TiO 2 ) prepared by hydrolysis of isopropoxide orthotitane over sand grains, showed a high surface area 296 m 2 g -1 and a high reaction rate for methylene blue (MB) photodegradation (0.064 min -1 ), on steady state condition by using 3 g of sand@TiO 2 and an MB solution (20 mL, 3 × 10 -5 mol L -1 ) or ciprofloxacin hydrochloride (CIP) solution (20 mL, 1.9 × 10 -3 mol L -1 ). Under UV irradiation with a medium pressure Hg lamp, the total MB removal reached 70% after 7 min and 45% for CIP in 60 min. Further, the photocatalyst showed to be a promising reusable material for removal of ciprofloxacin hydrochloride antibiotic (CIP) on wastewater. This new material appears as a new promising low cost and low impact reusable catalyst for water treatment. Scheme 1. Chemical structure of CIP antibiotic and methylene blue dye.
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