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DIY: Salvage Carbon rod electrodes for free

Frey Scientific 576672 Carbon Rod, 4mm Diameter x 100mm Length (Pack of 10)

$15.98


Pointed Copperclad AC 3/16" x 12" Electrode $134.00 99% Off more

The technology is quite simple. A pair of carbon rod electrodes areconnected to a current limited source of power - 115 V AC or DC in serieswith a 1500 W space heater, for example. They are mounted on a wellinsulated, fire proof structure which allows the distance between the rodsto be controlled.

Inexpensive carbon fiber rod electrodes (CFRE) in three diameters of 0.8 mm, 2 mm and 3 mm were used for voltammetric determination of 5-amino-6-nitroquinoline (5A6NQ) based either on its anodic oxidation or cathodic reduction using direct current voltammetry and differential pulse voltammetry. CFRE is based on carbon fiber rod, which consists of lengthwise oriented long carbon fibers coated from outer side by epoxy resin, connected to copper wire by conducting paint. The electrode material is inexpensive, commercially available at very low cost and at various shapes and sizes and its surface is easy to regenerate. Electrochemical behavior of prepared electrodes was examined using typical model redox system potassium ferrocyanide in aqueous supporting electrolytes. The best ratio between signal and noise was attained at CFRE with a 2 mm diameter. Practical applicability of these methods was demonstrated on the determination of 5A6NQ at CFRE-2 mm in model samples of drinking and pond water. CFRE can serve as a good alternative to pencil electrodes or carbon paste electrodes especially in cathodic voltammetry.

Carbon arc air gouging metal removal tools for ..

  • Determination of Trans-Resveratrol Using Voltammetric and Amperometric methods at Carbon Fiber Rod Electrode and Carbon Paste Electrode
    [Show abstract] [Hide abstract] ABSTRACT: A new method for the determination of trans-resveratrol employing voltammetry (direct current voltammetry (DCV), differential pulse voltammetry (DPV), adsorptive stripping differential pulse voltammetry (AdSDPV)) and flow injection analysis (FIA) with electrochemical detection (ED) at a carbon fiber rod electrode (CFRE) was developed and compared with the voltammetric determination using carbon paste electrode (CPE) and FIA with spectrophotometric detection (SPD). Optimum conditions were found to be Britton-Robinson (BR) buffer pH 2 - methanol (1:1, v/v) for voltammetry (except for AdSDPV where BR buffer pH 10 - methanol mixture, 95:5, v/v was used), and BR buffer pH 10 - methanol (1:1, v/v) medium with the detection potential +1.0 V or wavelength 306 nm for FIA. Practical applicability of the methods was tested on the determination of trans-resveratrol in Evelor pastilles. The results were in agreement with the results obtained using CPE and spectrophotometric detection and also with the content declared by the manufacturer.
    Article · Oct 2012
    Lenka NemcovaJiri BarekJiri Zima
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A hybrid catalyst composed of silver (Ag) doped wire-like molybdenum carbide (MoxCy) with pure β-phase and carbon nanotubes (CNTs) was coated well on a carbon rod electrode for the hydrogen evolution reaction (HER). The effects of Ag loading amount and carbonization temperature on the crystal form of MoxCy were inv