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Surface modification of activated carbon by corona treatment 42
PEGO,MATHEUS F.F.; BIANCHI,MARIA LÚCIA; CARVALHO,JANAÍNA A.; VEIGA,TAIS R.L.A..
Surface modification may lead activated carbon (AC) to take on different properties. This study aimed to promote surface modification of activated carbons using corona treatment (electrical discharge). In this study, powdered commercial activated carbon was used. Activated carbons were subjected to corona treatment at different exposure times (2, 5, 8 and 10 min) at 4.5 cm height from the source. To observe differences promoted by treatment, activated carbons were analyzed by acidity, surface functional groups, Fourier Transform Infrared Spectroscopy (FTIR), elemental analysis (CHN), proximate analysis and thermogravimetry. Corona treatment impacted surface chemistry of activated carbons. There was a trend of increasing surface acidity according to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chemical reactions; Electric discharge; Oxidation; Surface chemistry.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100402
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