Synthesis, Characterization, and Photocatalytic Evaluation of Manganese (III) Phthalocyanine Sensitized ZnWO4 (ZnWO4MnPc) for Bisphenol A Degradation under UV Irradiation

Abstract

ZnWO4MnPc was synthesized via a hydrothermal autoclave method with 1 wt.% manganese (iii) phthalocyanine content. The material was characterized for its structural and morphological features via X-ray diffraction (XRD) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, transmission emission microscopy (TEM), scanning electron microscopy-Energy dispersive X-ray spectroscopy (SEM-EDX), N2 adsorption–desorption at 77K, X-ray photoelectron spectroscopy (XPS), and UV-visible/diffuse reflectance spectroscopy(UV-vis/DRS). ZnWO4MnPc photocatalytic performance was tested on the degradation of bisphenol A (BPA). The ZnWO4MnPc material removed 60% of BPA after 4 h of 365 nm UV irradiation. Degradation process improved significantly to about 80% removal in the presence of added 5 mM H2O2 after 4 h irradiation. Almost 100% removal was achieved after 30 min under 450 nm visible light irradiation in the presence of same concentration of H2O2. The effect of ions and humic acid (HA) towards BPA removal was also investigated.

Immobilized TiO2/ZnO Sensitized Copper (II) Phthalocyanine Heterostructure for the Degradation of Ibuprofen under UV Irradiation

“…Desire driven by more and better food and crop production, public health protection, and personal care practices facilitated commercial manufacturing of anthropogenic organic chemical compounds [1]. These compounds have been reported to breakdown slowly or to be persistent for a longer period and/or bioaccumulate [2,3]. A wide spectrum of these compounds is found with respect to their applications ranging from pesticides to pharmaceuticals and personal healthcare products (PPCPs), to organic solvents, to endocrine disrupting compounds (EDCs), to flame retardants, to artificial sweeteners, and other industrial chemical products [1][2][3][4].…”

“…These compounds have been reported to breakdown slowly or to be persistent for a longer period and/or bioaccumulate [2,3]. A wide spectrum of these compounds is found with respect to their applications ranging from pesticides to pharmaceuticals and personal healthcare products (PPCPs), to organic solvents, to endocrine disrupting compounds (EDCs), to flame retardants, to artificial sweeteners, and other industrial chemical products [1][2][3][4]. Among these compounds, is a class of pollutants referred to as contaminants of emerging concerns (CECs), anthropogenically synthesized organic chemical pollutants detected in natural water bodies at very low concentration levels [2][3][4].…”

“…A wide spectrum of these compounds is found with respect to their applications ranging from pesticides to pharmaceuticals and personal healthcare products (PPCPs), to organic solvents, to endocrine disrupting compounds (EDCs), to flame retardants, to artificial sweeteners, and other industrial chemical products [1][2][3][4]. Among these compounds, is a class of pollutants referred to as contaminants of emerging concerns (CECs), anthropogenically synthesized organic chemical pollutants detected in natural water bodies at very low concentration levels [2][3][4]. Based on their perceived harmful effects on human and the environment, several treatment technologies for their abatement with an integrated approach as they elude conventional wastewater treatment plants (WWTPs) due to their recalcitrant nature have been studied [2,3].…”

“…Among these compounds, is a class of pollutants referred to as contaminants of emerging concerns (CECs), anthropogenically synthesized organic chemical pollutants detected in natural water bodies at very low concentration levels [2][3][4]. Based on their perceived harmful effects on human and the environment, several treatment technologies for their abatement with an integrated approach as they elude conventional wastewater treatment plants (WWTPs) due to their recalcitrant nature have been studied [2,3]. The application of advanced oxidation processes (AOPs) for the removal of such organic compounds including the heterogeneous TiO 2 -based photocatalysis approach for pollutant decontamination has gained huge interest and has been intensively studied [5].…”

“…It exhibited extended photocatalytic degradation activity even after the light switch off [24]. Apart from semiconductor oxides doping, dye sensitization approach has been an interesting concept for improved photoresponse in the degradation of organic pollutants by TiO 2 or other semiconductor-based photocatalyst materials [2,3,25]. Albay et al synthesized copper (ii) phthalocyanine/TiO 2 nanocomposite investigating both its photocatalytic activity and disinfection properties over Cr (VI) reduction and Escherichia coli (E. coli) inactivation near visible UV-A 365 nm irradiation source respectively [26].…”