TY - JOUR
T1 - Novel polyoxometalateatg-C3N4 hybrid photocatalysts for degradation of dyes and phenolics
AU - He, Jijiang
AU - Sun, Hongqi
AU - Indrawirawan, Stacey
AU - Duan, Xiaoguang
AU - Tade, Moses O.
AU - Wang, Shaobin
N1 - Funding Information:
We thank the Australia Research Council (ARC) for partially financial support under Project No: DP150103026.
Publisher Copyright:
© 2015 Elsevier Inc..
PY - 2015/10/5
Y1 - 2015/10/5
N2 - Graphitic carbon nitride (g-C3N4) is an emerging metal-free catalyst, and has attracted considerate research interests in photocatalysis. For improving the low photocatalytic activity due to the polymeric nature, a variety of methods have been developed. In this study, polyoxometalate (POMs) functionalized g-C3N4 were synthesized using a facile hydrothermal method as novel photocatalysts. The photocatalysts were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), N2 sorption isotherms, thermogravimetric analysis (TGA), and UV-vis diffusion reflectance spectroscopy (UV-vis DRS). The photocatalytic properties were evaluated in photodecomposition of aqueous methylene blue (MB) and phenol under UV-visible light irradiations. Compared to pristine g-C3N4, POMs modified samples demonstrated enhanced efficiencies in photodegradation of MB and phenol. It was suggested that increased specific surface area, porous volume and efficient charge transfer would be responsible for the improved photocatalysis. This study proves the promising role of POMs in modification of novel photocatalysts.
AB - Graphitic carbon nitride (g-C3N4) is an emerging metal-free catalyst, and has attracted considerate research interests in photocatalysis. For improving the low photocatalytic activity due to the polymeric nature, a variety of methods have been developed. In this study, polyoxometalate (POMs) functionalized g-C3N4 were synthesized using a facile hydrothermal method as novel photocatalysts. The photocatalysts were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), N2 sorption isotherms, thermogravimetric analysis (TGA), and UV-vis diffusion reflectance spectroscopy (UV-vis DRS). The photocatalytic properties were evaluated in photodecomposition of aqueous methylene blue (MB) and phenol under UV-visible light irradiations. Compared to pristine g-C3N4, POMs modified samples demonstrated enhanced efficiencies in photodegradation of MB and phenol. It was suggested that increased specific surface area, porous volume and efficient charge transfer would be responsible for the improved photocatalysis. This study proves the promising role of POMs in modification of novel photocatalysts.
KW - Graphitic carbon nitride
KW - Phenol
KW - Photocatalysis
KW - Polyoxometalate
KW - Visible light
UR - http://www.scopus.com/inward/record.url?scp=84930933547&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2015.06.003
DO - 10.1016/j.jcis.2015.06.003
M3 - Article
AN - SCOPUS:84930933547
SN - 0021-9797
VL - 456
SP - 15
EP - 21
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -