نتایج جستجو برای: acidic medium electrochemical measurements
تعداد نتایج: 671987 فیلتر نتایج به سال:
An experimental setup has been developed for successive photo-electrochemical etch and EIS measurement of semiconductor samples. Furthermore an algorithm based on electrochemical capacitance-voltage (ECV) has been developed for calculating dopant profile based on the measurements by developed setup. Phosphorous diffusion profile in p-type silicon was estimated by employing developed setup and a...
The oxygen reduction reaction (ORR) is one of the key processes for electrochemical energy storage, such as cathode process in fuel cells and metal–air batteries. To date, efficiency ORR half-reaction limits overall performance these storage devices. Traditional platinum-based materials are expensive cannot provide desired efficiency. As an alternative, a new catalytic scheme was proposed, whic...
We have created hybrid organic−inorganic nanoarchitectures by electrodepositing ultrathin (<10-nm-thick) polymer coatings onto nanostructured MnO2 birnessite-type electrodes with surface areas in excess of 200 m2 g-1. By choosing a self-limited growth process, based on the electropolymerization of o-phenylenediamine, the resulting polymer conformally coats the oxide nanoscale network without di...
1. Theoretical considerations lead to the conclusion that dissociable acidic groups present to a varying extent in different collodion preparations determine the electrochemical behavior of membranes cast from these preparations. It is further reasoned that the base exchange capacity of the collodion surfaces is the true quantitative measure of the abundance of the dissociable groups. 2. The co...
bounded) organelles are involved in the dynamic membrane trafficking processes essential for protein sorting and targeting, receptor-mediated endocytosis, neural or hormonal signal transduction and other processes (Mellman et al., 1986; Goldstein et al., 1985). These organelles include the Golgi apparatus, secretory vesicles, coated vesicles, endosomes, lysosomes and synaptic vesicles. Their lu...
As known, in the synthesis of conductive polyaniline polymer from aniline monomer, polymerization medium must be acidic. In order to make acidic, protonic acids such as HCl and H2SO4 are generally used. this study, two have been used One them, we know, is a acid. The other acid zinc ion, which Lewis metal ion has never for purpose up now. Two polymers synthesized prove that can also presence io...
copper nanoparticles were fabricated by electro-reduction of cuso4solution in the presence of cetyltrimethylammonium bromide (ctab) cationic surfactant as an additive through potentiostatic method. the prepared copper nanoparticles were characterized by scanning electron microscopy (sem) and electrochemical methods. the sem images reveal that the nanoparticles with diameters at about 70 n...
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