Facile and large scale synthesis of novel Cu2O octahedral crystals with efficient visible light photocatalytic activity

In this paper, Cu2O octahedral microcrystal was successfully synthesized by a facile one-step reaction at relatively low temperature of 96°C. The morphology, chemical composition, crystal structure and optical properties were characterized by field emission scanning electron microscopy (FESEM), X-ra...

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Bibliographic Details
Published in:Materials letters 2015-07, Vol.150, p.48-51
Main Authors: Li, Dongpei, Dai, Kai, Lv, Jiali, Lu, Luhua, Liang, Changhao, Zhu, Guangping
Format: Article
Language:English
Subjects:
ACTIVITY
COPPER OXIDE
Cu2O
CUPROUS OXIDE
Degradation
Diffraction
DIODES
EMISSIONS
Field emission
Light-emitting diodes
Microstructure
Photocatalysis
Photocatalytic activity
Powder technology
Reflectance
Spectroscopy
Synthesis
TITANIUM DIOXIDE
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Summary:In this paper, Cu2O octahedral microcrystal was successfully synthesized by a facile one-step reaction at relatively low temperature of 96°C. The morphology, chemical composition, crystal structure and optical properties were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), energy dispersive spectrometry (EDS) and UV–vis diffuse reflectance spectroscopy (DRS). The results indicated that the size of Cu2O octahedral particles is 1.5–2μm and the samples are very pure. In addition, the photocatalytic performance of samples was evaluated by the cycling degradation of methylene blue (MB) under 410nm light emitting diode (LED) irradiation. Cu2O exhibited efficient and stable photocatalytic activity, and the rate constant for the degradation of MB photocatalyzed by Cu2O is 7.7 times more than that of P25 TiO2. [Display omitted] •Cu2O octahedral crystals are successfully synthesized by a chemical process.•Cu2O octahedral crystals are very pure.•Cu2O showed efficient photocatalytic activity with irradiation of 410nm LED light.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2015.03.015