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The benefits of Technology

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發表於 2020-4-27 17:57 |顯示全部帖子
The BFC cathodes had been organized as follows: The CNT film was first laser minimize into 2-mm-diameter disks. The CNT pieces had been immersed into two mM MDB solution, heated to 140°C overnight, after which you can rinsed with h2o for a number of situations; the MDB-CNT items had been immersed in a very 60 mM H2PtCl6 answer with twenty mM doping steel ions (like Co, Ni, Cu, and Zn) then immersed in a 0.one M NaBH4 answer for seconds, adopted by numerous moments of h2o rinsing; two μl of 0.5% Nafion perfluorinated resin alternative was dropcasted onto the Pt- or Pt alloy-decorated MDB-CNT composite surfaces.

Characterizations on the BFCs
For characterization, the scanning electron microscopy (SEM) pictures on the electrodes have been obtained by a field-emission SEM (FEI Sirion). High-resolution TEM images had been attained by a TEM (Tecnai TF-20). CV and linear sweep voltammetry (LSV) analyses ended up carried out by means of an electrochemical workstation (CHI 660E).

The characterizations of BFCs ended up carried out in McIlvaine buffer answers (pH six.0) except in any other case observed. Ag/AgCl references electrodes had been employed in the BFC characterization. The Pt electrode was fabricated by photolithography (Microchemicals GmbH, AZ 9260) and electron beam (E-beam) evaporation of Cr/Pt (20/100 nm, in a pace of 0.2 and 0.five ?/s, respectively), adopted by lift-off in acetone.

The industrial Pt/C electrode was fabricated by drop-casting five μl of Pt/C resolution (two mg ml?1) and 2.five μl of Nafion (0.5%) over the Au electrode (three mm in diameter). To quantify the ECSA on the bioanode, we analyzed the electrodes in McIlvaine buffer (pH 6.0) with unique scan rates starting from ten to 200 mV s?one. The slope on the calibration curve (the current density at .one V compared to scan amount) was made use of as an estimate on the ECSA of each and every anode. The adsorption/desorption of hydrogen on Pt (in this article we applied integral space within the CV inside the range of .two to 0.1 V) was utilized to characterize the ECSA on the Pt-based BFC cathode. The polarization curves and electric power output were being achieved from the LSV measurement in a scan fee of two mV s?
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