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Reforming of Rice Ash Waste by Incorporated Nanotitania in Silica Framework for Photo‐catalytic Treatment of Wastewater
Author(s) -
ElSalamony Radwa A.,
Hassan Salah A.
Publication year - 2020
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.5824
Subject(s) - chemistry , degradation (telecommunications) , methylene blue , fourier transform infrared spectroscopy , catalysis , composite number , photocatalysis , nuclear chemistry , visible spectrum , rice straw , wastewater , chemical engineering , copper , reaction rate constant , kinetics , straw , composite material , materials science , waste management , inorganic chemistry , organic chemistry , telecommunications , physics , optoelectronics , quantum mechanics , computer science , engineering
The nano‐composites based on the burnt rice straw waste, reformed by nano‐TiO 2 and copper phthalocyanine (CuPc), namely, RSA‐TiO 2 , RSA‐CuPc, and RSA‐TiO 2 ‐CuPc were prepared by a mechano‐chemical method. The as‐prepared composite systems were characterized by adopting FE‐SEM, TEM, XRD, FTIR, SBET, and optical techniques. Their photo‐catalytic performance in the degradation of methylene blue dye was evaluated under visible light irradiation. The co‐existence of the two components in RSA, SiO 2 and organic carbon, plus the inherently intimate contact between nano‐TiO 2 and CuPc could improve the photo‐degradation of MB dye. The complete degradation of MB dye was achieved by using RSA‐TiO 2 (50) nano‐composite and the time is taken for 50% degradation of a dye is 53 min under visible light radiation. The kinetic study revealed that photo‐degradation of MB follows a pseudo‐first‐order reaction mechanism, where the kinetic rate constant was 0.013 min −1 .