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Optimization study of large electrochemical active area of nanocomposites VACNT-GO and its application in capacitive deionization

Grant number: 15/02960-7
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): April 01, 2015
Effective date (End): March 31, 2018
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal Investigator:Evaldo Jose Corat
Grantee:Amanda Araujo Silva
Host Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovações (Brasil). São José dos Campos , SP, Brazil
Associated research grant:12/15857-1 - Scientific studies and innovation application on CVD diamond, DLC and carbon nanostructures obtained by chemical vapor deposition technique, AP.TEM


The aim of this work is to study and develop a composite of Vertically Aligned Carbon Nanotubes with Graphene Oxide (VACNT-GO) on large surfaces areas (up to 70 x 300 mm2) with high specific capacitance, in order to employ this material in capacitive deionization processes (CDI), focusing on treating water by removing pollutants ions (heavy metals, nitrates and nitrites, for example). Depending on the parameters that will be obtained (deionization efficiency and energy efficiency), the study of brackish water desalination or even sea water desalination can become the objective of this project. The study will involve: (a) the growth of highly crystalline VACNT, using thermal CVD process with floating catalyst; (b) the study of appropriate substrates, which must have high electrical conductivity and low contact resistance with the nanotubes to reduce ohmic loss in charging and discharging processes ions; (c) the study of oxidation methods to increase the exfoliation volume of VACNT for the VACNT-GO formation; (d) the study of CDI settings that allow the capillary pumping due to the VACNT-GO superhydrophilicity properties, to deionization studies in small volumes, developing a method of "lab on a chip" and (e) the construction of an CDI system to evaluate the deionization efficiency and energy efficiency in a desalination process. (AU)

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SILVA, AMANDA ARAUJO; PINHEIRO, ROMARIO ARAUJO; RAZZINO, CLAUDIA DO AMARAL; CONTIN, ANDRE; TRAVA-AIROLDI, VLADIMIR JESUS; CORAT, EVALDO JOSE. Synthesis and Characterization of Carbon Fiber Based Porous CNTs-RGO/BDD for Application as Microelectrodes. MRS ADVANCES, v. 2, n. 41, p. 2247-2252, . (15/02960-7, 12/15857-1)
SILVA, AMANDA ARAUJO; PINHEIRO, ROMARIO ARAUJO; RODRIGUES, ALINE CASTILHO; BALDAN, MAURICIO RIBEIRO; TRAVA-AIROLDI, VLADIMIR JESUS; CORAT, EVALDO JOSE. Graphene sheets produced by carbon nanotubes unzipping and their performance as supercapacitor. Applied Surface Science, v. 446, n. SI, p. 201-208, . (15/02960-7, 12/15857-1)
SILVA, AMANDA ARAUJO; PINHEIRO, ROMARIO ARAUJO; RAZZINO, CLAUDIA DO AMARAL; TRAVA-AIROLDI, VLADIMIR JESUS; CORAT, EVALDO JOSE. Thin-film nanocomposites of BDD/CNT deposited on carbon fiber. DIAMOND AND RELATED MATERIALS, v. 75, n. SI, p. 116-122, . (15/02960-7, 12/15857-1)
SILVA, AMANDA ARAUJO; PINHEIRO, ROMARIO ARAUJO; TRAVA-AIROLDI, VLADIMIR JESUS; CORAT, EVALDO JOSE. Influence of catalyst particles on multi-walled carbon nanotubes morphology and structure. FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES, v. 26, n. 5, p. 315-323, . (15/02960-7, 12/15857-1)

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