Open AccessPolypyrrole coated hematite sand (HS@Ppy) as a new catalyst for degradation of organic dye based on sulfate radicals
Author(s) -
Abdellah Ait El Fakir,
Zakaria Anfar,
Amane Jada,
Noureddine El Alem
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/827/1/012011
Subject(s) - polypyrrole , persulfate , radical , catalysis , aqueous solution , chemistry , degradation (telecommunications) , methyl orange , nuclear chemistry , sulfate , polymer chemistry , inorganic chemistry , chemical engineering , photocatalysis , organic chemistry , polymer , polymerization , telecommunications , computer science , engineering
The present work deals with the degradation in water of organic dye such as Orange G by using sulphate radicals as oxidant. Thus, a new catalyst based on polypyrrole coated hematite sand particles, (HS@Ppy) was first prepared. Thereafter, sulphate radicals were produced by activating the persulfate (PS) agent in the presence of the HS@Ppy catalyst. The resulted HS@Ppy/PS system was finally mixed with Orange G aqueous solutions for dye degradation. The data indicate that polypyrrole shell coating amount in the HS@Ppy particles has a great influence on the Orange G degradation. The HS@Ppy/PS system exhibited the highest OG removal rate (the removal rate is 98 % after 15 minutes of reaction) as compared to the various systems: PS alone, HS@Ppy alone, or HS/PS alone.