Growing MnO2 nanocrystals in the bulk of porous carbon nanofibers is conducted in a KMnO4 aqueous solution aimed to enhance the electrochemical performance of MnO2. The rate of redox reaction between KMnO4 and carbon was controlled by the concentration of KMnO4 in a neutral solution. The MnO2 nanoparticles grow along with (211) crystal faces when the redox reaction happens on the surface of fib...

Graphite oxide was synthesized from natural flake graphite by the modified Hummers method. In brief, 200 mg of Graphite particles were immersed in Concentrated sulfuric acid (46 ml) and KMnO4 (6 g) was added slowly in small quantities in which temperature was maintained between the 0 and 5 c using an ice bath, after the complete oxidation of KMnO4, the mixture was heated to 37 c and kept at thi...

Hummers method is commonly used for the fabrication of graphene oxide (GO) from graphite particles. The oxidation process also leads to the cutting of graphene sheets into small pieces. From a thermodynamic perspective, it seems improbable that the aggressive, somewhat random oxidative cutting process could directly result in graphene nanosheets without destroying the intrinsic π-conjugated str...

Through the silver ion catalysis to form colored KMnO4, and combined with the DNA hybridization chain reaction and silver nanowire for signal amplification, a highly sensitive and selective colorimetric sensor has been developed for the detection of Hg(2+).

The main objective of the research was to identify semiconducting characteristics mature medium-thick (diameter 14, 15 µm) "Xorazm-150" cotton fibers both undoped and doped with 1.5% aqueous solution KMnO4, including current versus voltage temperature dependence, dependence electrical conductivity, influence doping time on photoconductivity. conducted in range (296-360 K) (0-100 V). infrared sp...

Studies with the electron microscope have revealed a structural plan common to the nuclear envelopes of many types of cells (e.g. 1-6, 8, 11, 13). Nearly all envelopes examined to date consist of two membranes each roughly 50 to 80 A in thickness separated by a perinuclear space of somewhat greater, but variable dimensions. In addition there exist discontinuities in the envelope which generally...

A novel flow injection chemiluminescence (CL) method for the determination of loxoprofen and naproxen was proposed based on the CL system of KMnO4, and Na2SO3 in acid media. The CL intensity of KMnO4-Na2SO3 was greatly enhaneed in the presence of loxoprofen and naproxen. The mechanism of the CL reaction was studied by the kinetic proecss and UV-vis absorption and the conditions were optimized. ...

Two Mn0.15Ce0.85O2−δ mixed oxides were synthesized by a co-precipitation method using Mn(NO3)2 and KMnO4 as the manganese precursors, respectively. Structural analyses X-ray powder diffraction Raman spectroscopy reveal formation of MnOx-CeO2 solid solutions. The catalyst prepared from high-valent precursor exhibits higher activity for catalytic oxidation NO. advantage is related to improved red...

Environmental pollution increases along with industrial developments, one of which is copper (Cu) heavy metal waste. In this research, banana peel as adsorbent was carbonized at 350℃. Then chemically activated ZnCl2 and KMnO4. Biopolymer pellets without carbon were in the form white gel-like beads, KMnO4 0.5 g dark gray, 1 light gray. SEM results showed that pores larger than g. The mechanical ...

Nitro-based compounds are the direct precursors of trichloronitromethane during chlorination disinfection. Two nitro-based pharmaceuticals ranitidine and nizatidine were selected as model compounds to assess the effect of oxidation on the removal of nitro-based pharmaceuticals, as well as the reduction of their trichloronitromethane formation potentials (TCNMFPs). The four oxidants were ozone (...