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Oberflächennahe ZnAl 2 O 4 /reduzierte Graphenoxid‐Nanokomposite mit gesteigerter photokatalytischer Leistung
Author(s) -
Miroliaee A.,
Hoshdari S.,
Mohammadi Chahaki M.,
Abdouss M.
Publication year - 2019
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201800113
Subject(s) - graphene , oxide , materials science , nanocomposite , photocatalysis , rhodamine b , chemical engineering , nanotechnology , composite material , chemistry , catalysis , organic chemistry , metallurgy , engineering
Abstract In this study, the fabrication of ZnAl 2 O 4 /reduced graphene oxide nanocomposites is reported for the initial time. Two nanocomposites, ZnAl 2 O 4 /reduced graphene oxide‐50 and ZnAl 2 O 4 /reduced graphene oxide‐100, with different reduced graphene oxide contents (50 mg/ml and 100 mg/ml initial graphene oxide concentration respectively) were synthesized via a hydrothermal route; and characterized with the aid of suitable characterization and analytical techniques. For comparative purposes, two pure ZnAl 2 O 4 samples were fabricated by citrate sol‐gel and urea combustion methods. The photocatalytic activity of the synthesized pure nanospinels and nanocomposites was studied for the degradation of rhodamine B dye under ultraviolet–A light irradiation. Compared to pure ZnAl 2 O 4 nanoparticles, ZnAl 2 O 4 /reduced graphene oxide nanocomposites exhibited superior photocatalytic activity. The highest efficiency was observed for ZnAl 2 O 4 /reduced graphene oxide‐100 composite, where; full degradation of rhodamine B occurred after 45 min. The enhancements of the photocatalytic performance of ZnAl 2 O 4 /reduced graphene oxide composites were mainly attributed to unique electronic and surface properties of reduced graphene oxide.