نتایج جستجو برای: modified carbon active
تعداد نتایج: 940025 فیلتر نتایج به سال:
The active site amount of photocatalysts, being the key factors in photocatalytic reactions, directly affects performance photocatalyst. Pristine graphitic carbon nitride (g-C3N4) exhibits moderate activity due to insufficient sites. In this study, cyano-modified porous g-C3N4 nanosheets (MCN-0.5) were synthesized through molecular self-assembly and alkali-assisted strategies. cyano group acted...
the aim of this study is to verify the amount of nitrate absorption on latium composite over active carbon in which ph parameters, temperature, pollutant concentration, contact time for absorbent were considered. it was determined that optimum condition for absorbent are ph=3, t= 0 ˚c and initial concentration of solution=10 ppm, then absorption parameters verified and after drawing absorption...
a new hydroxylamine sensor has been fabricated by immobilizing oxadiazol denvative at the surface ol aglassy carbon electrode (gce) modified by multi-wall carbon nanotube (mivcnt). the adsorbed thin illms oroxadiazol derivative on the mwcnt modified gce show a pair of peaks with surface confined characierisnus.the oxadiazol derivative mwcni (omwcnt) modified gce shows highly catalytic activity ...
fabrication and electrochemical characterization of a sensor for the determination of epinephrine (ep), uric acid (ua) and folic acid (fa) is described. the sensor was prepared using carbon paste electrode (cpe) modified with 3,4-dihydroxybenzaldehyde-2,4-dinitrophenylhydrazone (ddp) and carbon nanotubes (cnts), which makes the modified electrode highly sensitive for the electrochemical detect...
Electrochemical behavior of a Prussian blue -modified carbon paste electrode and their applications to electrocatalytic activity for hydrazine oxidation. The electrochemical behavior and stability of the modified electrodes as well as electro-oxidation of hydrazine at the electrode were investigated using cyclic voltammetry method. At the modified electrode, the oxidation of hydrazine occurs ...
In the present work, well ordered, mesoporous carbon nitride (MCN) sorbent with uniform mesoporous wall, high surface area and pore volume has been fabricated using the simple polymerization reaction between ethylene diamine and carbon tetrachloride in mesoporous silica media, and then modified by TiO2 nanoparticles (Ti-MCN). The structural order and textural properties of the nanoporous materi...
Rapid and facile preparation of the cheap modified electrode materials is an important parameter in development of the efficient electrochemical sensor for industrial scale production and mass-market usage. In the present work, the carbon paste electrode modified with multi-walled carbon nanotubes (MWCNTs) was prepared for sensitive determination of lead (Pb) ion in the presence of bismuth (Bi)...
Background: Stevia rebaudiana Bertoni, an important anti-diabetic medicinal plant, becomes an inevitable alternative to sugar. Due to the propagation difficulties, tissue culture is the best alternative for rapid mass propagation of stevia plants. Objective: The present study was conducted to optimize a protocol for rapid micropropagation of Stevia rebaudiana by shoot tip explants and to inv...
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