NDLI: Solar and visible light photocatalytic enhancement of halloysite nanotubes/g-C<sub>3</sub>N<sub>4</sub> heteroarchitectures

Content Provider	Royal Society of Chemistry (RSC)
Author	Kordouli, E. Christoforidis, K. C. Fornasiero, P. Zafeiratos, S. Stathatos, E. Melchionna, M. Papoulis, D. Montini, T.
Copyright Year	2016
Abstract	Novel heteroarchitectures made of graphitic carbon nitride (g-C3N4) and halloysite nanotubes (HNTs) were prepared by a facile and soft self-assembly strategy. The morphological, structural and electronic properties of the HNTs/g-C3N4 nanocomposites were determined by means of a plethora of techniques including N2 physisorption, XRD, FT-IR, TEM, UV-Vis absorption, XPS, ζ potential and photoluminescence (PL). Their photocatalytic activity was evaluated under both simulated solar light and pure visible light irradiation against the photodegradation of neutral, positively and negatively charged pollutants, namely phenol, methylene blue (MB) and methyl orange (MO), respectively. The prepared HNTs/g-C3N4 nanocomposites were proven to be durable and significantly more efficient than the pure g-C3N4 reference for the degradation of positively charged and neutral organics. The nanocomposites presented increased charge carrier formation and reduced recombination rates due to the tight contact between the two components. The enhanced photoactivity was attributed to the dual function of HNTs enhancing (a) the abundance and stability of the photogenerated e− and h+ pairs and (b) the adsorption of positively charged organics on the nanocomposite. Both functions originate from the charged surface of HNTs.
Starting Page	86617
Ending Page	86626
Page Count	10
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	6
Issue Number	89
Journal	RSC Advances
DOI	10.1039/c6ra15581b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Photodegradation Charge carrier Photoluminescence Carrier generation and recombination Fourier-transform infrared spectroscopy Physisorption Graphitic carbon nitride Methylene blue X-ray crystallography Self-assembly Phenol Transmission electron microscopy Halloysite Adsorption Nanocomposite Nitride Methyl orange
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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