intercalation of lithium into ag-cnts sample is reported here. we have used a nano-porous silver foam as a frame for deposition of the cnts   inside   the   pores   by   electrophoresis   deposition   (epd) technique. by using  chronopotentiometry method,  we  have noticed that the li storage capacity of the prepared ag-cnts electrode was improved  noticeably  in  comparison  with  literature. ...

Electrochemical study of Er(III)/Er and Yb(III)/Yb systems was independently investigated in molten LiF-CaF2 on inert electrode at 840 °C using cyclic voltammetry square wave voltammetry. Experimental results showed that two different behaviours were observed: Er(III) reduced into metal a one-step diffusion controlled process Yb(III) first Yb(II) then Yb. The electrochemical containing both Mo ...

The development of transition metal (TM) catalysts to replace precious metals has garnered increasing interest. Specifically, platinum (Pt)-based have been extensively investigated for their electrochemical performance in hydrogen evolution reaction (HER), which offer a clean means producing fuel without carbon emissions. However, the reliance on Pt-based hindered progress HER development. Ther...

The state of the electrochemical behaviour Al electrode in aqueous solutions containing Na2MoO4 + H3PO4 chitosan was investigated by methods currentless chronopotentiometry, chronoamperometry, optical and scanning electron microscopy. modification surface polymolybdate phosphate layers carried out a potentiostatic mode potentials range from ?1 to ?3 V polarization time (from 15 90 min). element...

High edge energy storage with large life-span stable materials have become the most significant and major requirement in near future. Bismuth sulfide (Bi2S3) nanoparticles (NPs) was effectively synthesized by utilizing bismuth diethyldithiocarbamate (Bi[DTC]3) complex as single-source antecedent. The Bi2S3 NPs were affirmed structural, morphological thermal analysis various analytical studies. ...

Low-cost and high-performance advanced electrocatalysts for direct methanol fuel cells are of key significance for the improvement of environmentally-pleasant energy technologies. Herein, we report the facile synthesis of cobalt phosphate (Co3(PO4)2) nanospheres by a microwave-assisted process and utilized as an electrocatalyst for methanol oxidation. The phase formation, morphological surface ...

The improvement of knowledge about the toxicity and even processability, and stability of quantum dots (QD) requires the understanding of the relationship between the QD binding head group, surface structure, and interligand interaction. The scanned stripping chronopotentiometry and absence of gradients and Nernstian equilibrium stripping techniques were used to determine the concentration of C...

Boron doped diamond (BDD) functionalization has received an increasing interest during the last few years. Such an infatuation comes from the original properties of BDD, including chemical stability or an electrochemical window, that opens the way for the design of (bio)sensors or smart interfaces. In such a context, diazonium salts appear to be well suited for BDD functionalization as they ena...

We report here on a highly sensitive and rapid detection technique, multipulse flash chronopotentiometry, for the anticoagulant polyion heparin and its antidote protamine. The technique is based on a localized titration of the polyions at the surface of an appropriately formulated polymeric ion-selective membrane devoid of ion exchange properties to prohibit spontaneous extraction processes. A ...

In this paper, a label-free aptamer based detection system (apta-DS) was investigated for detecting colon cancer cells. For this purpose, we employed an aptamer specific to colon cancer cells like HCT116 expressing carcinoembryonic antigen (CEA) on their surfaces. Capture aptamers were covalently immobilized on the surface of gold nanoparticles (GNPs) through self-assembly monolayer of 11-merca...