Abstract A multilayer thin film from zinc oxide and silver (ZnO/Ag film) has been synthesized via the technique of pulsed infrared laser deposition at 600 °C to be used as a portable catalyst for degradation 4-nitrophenol. The was formed by two steps; first one making with 300 nm thickness, followed 100 Ag, which characterized different characterization techniques. XRD data demonstrated presenc...

This article describes the fabrication of electrochemical devices for detection a key environmental pollutant, 4-Nitrophenol (4-NPh). 4-NPh is requirement synthesis organophosphate pesticides. These pesticides are mostly used in agricultural sector to obtain high yield products. The use field results poisonous levels this compound soil and water. Different techniques have been its transformatio...

The effects of pentaand hexadecanoic acids on the population and orientational structure of p-nitrophenol, at the airlwater interface at a bulk pH of 2, have been studied by using the technique of second-harmonic generation. The results indicate that, with increasing fatty acid at the interface, (1) the population of p-nitrophenol at the airlwater interface first increases and then decreases, (...

The present investigation deals with the importance of interaction and position nitro group in adsorptive removal 2-nitrophenol (2-NP), 4-nitrophenol (4-NP) phenol by demineralized kraft lignin activated carbon (DKLAAC). adsorption NPs on DKLAAC was found to follow order 2-NP > 4-NP phenol. In this study, both solubility donor–acceptor complex mechanism played an important role besides poros...

Cyclodextrin (CD) capped CdTe quantum dots (QDs) were prepared with uniform dimension (average diameter ∼5 nm) and high quantum yield (ca. 65%). By taking advantage of the inclusion complexation of CD, β-CD-CdTe QDs exhibited strong fluorescence quenching in a linear relationship with the concentration of o-, m- and p-nitrophenol in the range of 20-100 μM. The detection limit reached 0.05 μM fo...

A standard assay for measuring alkaline phosphatase activity is detecting the production of nitrophenol from the artificial substrate p-nitrophenol phosphate. Nitrophenol absorbs light at 420 nm, which provides a convenient detection method. However, the absorbance of nitrophenol varies with pH. This variation complicates the use of the colorimetric assay to study the pH-dependence of alkaline ...

The glucuronic acid adducts of 1-naphthol, 2-naphthol and 4-methylumbelliferone activate microsomal UDP-glucuronyltransferase (EC 2.4.1.17) when the enzyme is assayed with p-nitrophenol as aglycone. Phenyl glucuronide and oestriol 3beta-glucuronide also activate UDP-glucuronyltransferase. but to a lesser extent. Activation by glucuronides is not dependent on metal ions, but is blocked by prior ...

The tubular nanocomposite with well-dispersed distribution of small gold nanoparticles (AuNPs) assembled on the inside and outside surfaces of silica nanotubes (SNTs) was fabricated by combining the single capillary electrospinning technique and an in situ reduction approach. The AuNPs/SNTs nanocomposite exhibited a good catalytic activity for reduction of 4-nitrophenol (4-NP).

0-0005 to 0-004M resulted in progressive acceleration of respiration. Glucose plus hexokinase accelerated respiration, which was further increased by AMP. 3. The addition to the mitochondrial fraction of the particle-free supernatant of kidney cortex greatly enhanced the stimulating action of p. nitrophenol on the respiration. The supernatant fraction of mammary tissue did not show a correspond...