Search

Despite the state-of-the-art advantages of cellulose in improving the quality of electrical and electronic materials, this natural material does not always bring positive effects. The present work aims at filling this gap. For this purpose, a novel ferroelectric nanocomposite based on a classical ferroelectric metal-organic framework of dimethylammonium aluminum sulphate hexahydrate with a dielectric inclusion of cellulose nanoparticles was synthesized. The study on structure and dielectric properties revealed that the cellulose caused a strong depression of ferroelectricity at temperatures of lower than 115 K when interacting with functional groups of the ferroelectric component. [ABSTRACT FROM AUTHOR]

A metal-organic framework of iron-doped copper 1,4-benzenedicarboxylate was synthesized and, for the first time, utilized as a heterogeneous photo-Fenton catalyst for degradation of methylene blue dye in aqueous solution under visible light irradiation. The synthesized materials were characterized by scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. The influence factors, kinetics, and stability of the synthesized catalysts were investigated in detail. Iron-doped copper 1,4-benzenedicarboxylate showed higher degradation efficiency than pure copper 1,4-benzenedicarboxylate. An almost complete degradation was achieved within 70 min under visible light irradiation at a solution pH of 6, a catalyst loading of 1 g L−1, a H2O2 dosage of 0.05 mol L−1 and methylene blue concentration of 50 mg L−1. Recycling studies demonstrated that the iron-doped copper 1,4-benzenedicarboxylate is a promising heterogeneous photo-Fenton catalyst for long-term removal of methylene blue dye from industrial wastewater. [ABSTRACT FROM AUTHOR]