In this work, a novel copper-based nanocomposite catalyst was fabricated by using magnetic maize straw as support for the reduction of 4-nitrophenol (4-NP). Magnetic prepared amidation reaction amine-functionalized magnetite nanoparticles (NH2–Fe3O4) with succinylated (S-MS). After (Mag-S-MS) mixed cupric ions aqueous solution, Cu(II) could be captured amino and carboxylate groups reduced sodiu...

The green synthesis of silver nanoparticles is a rapid and environmentally friendly technique (AgNPs). Silver ions are bioreduced into AgNPs by compound found in Skimmiaanquetilia's aqueous leaf extract, which consists primarily alkaloids coumarins. were synthesized characterized multiple techniques, including ultraviolet-visible spectroscopy, Fourier transform infrared analysis, scanning elect...

Abstract 4-Nitrophenol is a highly toxic environmental pollutant. It challenge to selectively remove it from mixture of various pollutants. Herein, we report study on the selective adsorption 4-nitrophenol by using molecularly imprinted polymers (MIPs). The polymer was synthesized cellulose as framework, onto which, complex imprinting molecule (i.e., 4-nitrophenol) and candidate material [namel...

Gold nanoparticles (AuNP) are widely used for reaction catalysis. The common understanding is that the smaller particles, more reactive they are. It reported here this not always case citrate (Ct) or polyvinylpyrrolidone (PVP) stabilized AuNP in catalytic reduction of 4-nitrophenol with sodium borohydride (NaBH4), when total surface area kept constant. results prove size range 10–58 nm, reactiv...

This research evaluates the efficiency of nanosized ZnO in the catalytic ozonation of 4-chloro-2-nitrophenol and determines the effect of pH on heterogeneous catalytic ozonation. The combined use of ozone and ZnO catalyst leads to conversion of 98% 4-chloro-2-nitrophenol during 5 min. In addition, it was found that in ZnO catalytic ozonation, the degradation efficiency of 4-chloro-2-nitrophenol...

We describe specifications for high-purity 4-nitrophenol, which is suitable for spectrophotometric standardization. Such a reference material is needed in clinical enzymology to establish the proper molar absorptivity of 4-nitrophenol under final reaction conditions, particularly for measuring alkaline phosphatase activity in human serum. Some lots of 4-nitrophenol available commercially met th...

The reduction of nitroaromatics to aminoaromatics is essential for fine chemical production and effective sewage treatment. However, the activity an external catalyst reaction. In this study, Pd nanocrystals were anchored in situ on two-dimensional graphene oxide (GO), which acted as a support with high specific surface area. oxygen-containing groups GO bonded functionally rich boron clusters t...