Semiconductor, polymeric, and carbonaceous composite electrodes ayming the synergy...
| Grant number: | 14/27164-6 |
| Support type: | Scholarships in Brazil - Post-Doctorate |
| Effective date (Start): | October 01, 2015 |
| Effective date (End): | September 30, 2019 |
| Field of knowledge: | Engineering - Materials and Metallurgical Engineering |
| Cooperation agreement: | Coordination of Improvement of Higher Education Personnel (CAPES) |
| Principal Investigator: | Neidenêi Gomes Ferreira |
| Grantee: | Silvia Sizuka Oishi |
| Home Institution: | Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia, Inovações e Comunicações (Brasil). São José dos Campos , SP, Brazil |
| Associated research grant: | 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination, AP.TEM |
Abstract The worldwide problem of good quality water availability due to an increase in consumption and decrease in water resources has increased concern about environment and the search for new materials and technologies for polluted water treatment. The nitrogen compounds arising from agricultural and some industrial sectors are among the contaminants, which in excess represent a health risk. As environmental regulations become stricter, new processes for efficient wastewater treatment at low cost are necessary. In this sense, this project aims the production, characterization and application of boron-doped nanodiamond (BDND) electrodes grown on reticulated vitreous carbon (RVC) with different graphitization index. RVC substrates will be processed by using polyfurfuryl alcohol resin treated in an oven with controlled atmosphere and will be characterized morphologically and structurally. From technological point of view, the combination of two materials such as diamond film and RVC, is particularly useful for integrating their properties in a hybrid material, resulting in a novel composite for electrochemical applications which combines the singular properties from diamond with the large surface area of RVC matrix. In order to enhance the electrocatalytic activity, the surfaces of RVC and RVC/BDND composites will be modified with silver nanoparticles by electrodeposition. The processed electrodes will be characterized by scanning electron microscopy, Raman spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy and cyclic voltammetry. Finally, these electrodes will be tested in synthetic samples for nitrate removal by electroreduction and their efficiency will be compared with a plan electrode of Si/BDND. The electrolysis results will be verified by Ion Chromatography. (AU) | |