Open AccessEffect of synthesis conditions on methylene blue adsorption capacity of electrochemically preparated graphene
Author(s) -
Hao Pham Van,
Linh Ha Xuan,
Oanh Phung Thi,
Hong Phan Ngoc,
Nguyễn Nhật Huy,
Thanh Dang Van,
Đăng Nguyễn Văn
Publication year - 2020
Publication title -
xúc tác và hấp phụ
Language(s) - English
Resource type - Journals
ISSN - 0866-7411
DOI - 10.51316/jca.2020.042
Subject(s) - methylene blue , x ray photoelectron spectroscopy , graphene , exfoliation joint , adsorption , raman spectroscopy , aqueous solution , electrochemistry , materials science , oxygen , chemical engineering , nuclear chemistry , chemistry , electrode , nanotechnology , organic chemistry , catalysis , physics , optics , photocatalysis , engineering
This report presents the effect of synthesis conditions on the synthesis of graphene nanosheets via electrochemical exfoliation method for adsorbing methylene blue from aqueous solution. Oxygen-containing functional groups and defects in the material were characterized by Raman and X-ray photoelectron spectroscopy (XPS). As a result, by using voltage of 15 V, (NH4)2SO4 (5%, 250 mL) and KOH (7.5%, 250 mL), the obtained material showed the highest MB adsorption capacity due to the high densities of oxygen-containing groups and defects comparison to other conditions.