Open AccessSynthesis of immobilized ZnO over polyurethane and photocatalytic activity evaluation for the degradation of azo dye under UV and solar light irardiation
Author(s) -
Anam Inderyas,
Ijaz Ahmad Bhatti,
Ambreen Ashar,
Munir Ashraf,
Ambreen Ghani,
Maryam Yousaf,
Muhammad Mohsin,
Muhammad Ahmad,
Sidra Rafique,
Nasir Masood,
Munawar Iqbal
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ab715f
Subject(s) - scanning electron microscope , photocatalysis , degradation (telecommunications) , polyurethane , materials science , nuclear chemistry , chemical oxygen demand , irradiation , zinc , wastewater , chemical engineering , photochemistry , catalysis , chemistry , waste management , organic chemistry , composite material , telecommunications , physics , computer science , nuclear physics , engineering , metallurgy
Zinc oxide (ZnO) nanoparticles were immobilized on polyurethane foam (PUF) and employed for the degradation of Acid black 1 dye (AB1). The ZnO/PUF was characterized by x-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive x-ray (EDX) techniques. Process variables i.e., dye concentration, pH, concentration of H 2 O 2 , irradiation time were optimized for maximum degradation of dye. ZnO/PUF showed promising efficiency for the degradation of AB1 dye and up to 86% and 65% dye degradation was achieved under UV and solar light irradiation at neutral pH, 4% H 2 O 2 , 240 min/sunlight and 75 min/UV irradiation time using 40 mg l −1 dye initial concentration. The optimum conditions were applied for the treatment of textile wastewater and biological oxygen demand (BOD) and total organic carbon (TOC) were reduced up to 70% and 80%, respectively. In view of promising photocatalytic activity (PCA), ZnO/PUF could possibly be used for the treatment of wastewater contains dyes.