The Electrochemistry of Boron-Doped Diamond Films on Single Crystal Diamond in Li+-Based Solid Polymer Electrolyte in Ultrahigh Vacuum

1997 ◽  
Vol 119 (33) ◽  
pp. 7875-7876 ◽  
Author(s):  
Lin-Feng Li ◽  
Dana Totir ◽  
Barry Miller ◽  
Gary Chottiner ◽  
Alberto Argoitia ◽  
...  
2020 ◽  
Vol 18 (2) ◽  
pp. 1391-1399
Author(s):  
Andrea Luca Tasca ◽  
Davide Clematis ◽  
Marco Panizza ◽  
Sandra Vitolo ◽  
Monica Puccini

AbstractChlorpyrifos is an organophosphorus insecticide, acaricide and miticide used worldwide for the control of soil-borne insect pests. It must be considered as a substance of growing concern, given its use, toxicity, environmental occurrence, and potential for regional to long-range atmospheric transport. Considering the incomplete removal attained by conventional water treatment processes, we investigated the efficiency of electrolytic radicals production and sonoelectrolysis on the degradation of the pesticide. The treatment has been conducted in a novel electrochemical reactor, equipped with a boron-doped diamond anode and a solid polymer electrolyte (SPE). Different current intensity and times have been tested and coupled with sonication at 40 kHz. Up to 69% of chlorpyrifos was completely removed in 10 min by electrolysis operated at 0.1 mA, while 12.5% and 5.4% was converted into the treatment intermediates 3,5,6-trichloro-2-pyridinol (TCP) and diethyl (3,5,6-trichloropyridin-2-yl) phosphate, respectively. Ultrasound irradiation did not enhance the removal efficiency, likely due to mass transport limitations, while the energy consumption increased from 8.68∙10− 6 to 9.34∙10− 4 kWh µg− 1 removed. Further research is encouraged, given the promising processing by the SPE technology of low conductivity solutions, as pharmaceuticals streams, as well as the potential for water and in-situ groundwater remediation from different emerging pollutants as phytosanitary and personal care products.


2012 ◽  
Vol 1395 ◽  
Author(s):  
Shannon. N. Demlow ◽  
I. Berkun ◽  
M. Becker ◽  
T. Hogan ◽  
T.A. Grotjohn

ABSTRACTHigh quality single crystal boron-doped diamond films are deposited in a microwave plasma-assisted CVD reactor with feedgas mixtures including hydrogen, methane, diborane, and carbon dioxide at reactor pressures of 160 Torr. The effect of diborane levels and other growth parameters on the incorporated boron levels are investigated, and the doping efficiency is calculated over a wide range of boron concentrations. The boron level is investigated using infrared absorption, and compared to SIMS measurements, and defects are shown to affect the doping uniformity.


2011 ◽  
Vol 31 (3) ◽  
pp. 388-398 ◽  
Author(s):  
Gopi K. Samudrala ◽  
Georgiy Tsoi ◽  
Andrei V. Stanishevsky ◽  
Jeffrey M. Montgomery ◽  
Yogesh K. Vohra ◽  
...  

1998 ◽  
Vol 44 (6-7) ◽  
pp. 949-955 ◽  
Author(s):  
Lin-Feng Li ◽  
Dana Totir ◽  
Yosef Gofer ◽  
Gary S Chottiner ◽  
Daniel A Scherson

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