Iron doped carbon aerogel – New electrode material for electrocatalytic reduction of H2O2

A novel rapid synthesis of Fe2O3/graphene nanocomposite using ferrate(VI) and its application as a new kind of nanocomposite modified electrode as electrochemical sensor

“…This result indicates that the redox couple in rGO-Fe 2 O 3 -GCE shows quasireversible behavior in an aqueous medium. The E 0 ' value found for rGO-Fe 2 O 3 -GCE (-0.39 V vs. SCE) is smaller than -0.210 V (vs. Ag/AgCl) reported for carbon paste electrode modified with Fe doped mesoporous carbon aerogel[46].The effect of pH and buffer solution on the electrochemical behavior of rGO-Fe 2 O 3 on GCE was investigated over the range of pH 2-9 with PBS and the results are illustrated in As the results show the peak currents did not change with increasing the solution pH in PBS 0.01 mol L -1 , the ammonia buffer (pH=9.0) shows an enhancement in redox peak currents clearly. Therefore, the ammonia buffer solution (pH 9.0) was chosen as the optimum working buffer solution for subsequent measurements.…”

“…compare some of the analytical characteristics from this work and those previously enzymic and nonenzymic reported in the literature[21,25,[44][45][46][47][48][49][50][51][52][53] for H 2 O 2 detection. The detection limits and linear calibration range of the proposed sensor are comparable with those provided by other modified carbon electrodes.…”

Removal of lead(II), copper(II), cobalt(II) and nickel(II) ions from aqueous solutions using carbon gels

“…There are three main methods of drying organic gels: drying with supercritical CO 2 [5,6] creating gels named aerogels, drying at ambient temperature [7][8][9][10],which gives xerogels or by freeze drying [11]cyrogels. During carbonisation, organic gels are heated from room temperature to the required pyrolysis temperature, generally 600-1050°C [12][13][14][15].…”

Bismuth doped carbon xerogel nanocomposite incorporated in chitosan matrix for ultrasensitive voltammetric detection of Pb(II) and Cd(II)

“…Continuing our previous research work in the field of "green nanomaterials" that can be applied in the development of electrochemical sensors [13,36], in this work the interest was focused on the obtaining of a new modified glassy carbon (GC) electrode, based on Bi nanoparticles incorporated in carbon xerogel. Thus, a sample of homemade carbon xerogel was impregnated with Bi nanoparticles and the obtained new material (Bi-CX) was immobilized in a film of Chi deposited on the surface of a GC electrode.…”