Reduced graphene oxide can activate the sunlight-induced photocatalytic effect of NiO nanowires
作者： Kourosh Rahimi , Haniyeh Zafarkish , Ahmad Yazdani
DOI: 10.1016/J.MATDES.2018.02.030
关键词:
摘要: Abstract Nickel (II) oxalate dihydrate nanowires, synthesized in the presence of graphene oxide, were thermally decomposed into a composite oxide and nickel (GO-NiO) was then reduced (rGO-NiO) nanowires. The structures characterized by field emission scanning electron microscopy, X-ray diffractometry, Fourier-transform infrared spectroscopy, showing structure as well reduction sheets existing sheets. UV–visible spectrophotometry showed that rGO could enhance absorption NiO particularly visible region light, also decrease their bandgap energy from 3.3 to 2.8 eV. Photoluminescence spectroscopy indicated vanish PL intensity meaning rGO-NiO sample has lower e-h recombination rate than sample. It shown although nanowires had an insignificant photocatalytic effect, incorporation activate it, increasing its activity nearly equal standard TiO2-P25 photocatalyst. Finally, we discussed mechanism behind enhancement activity.
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