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Facile synthesis of graphitic C3N4nanoporous-tube with high enhancement of visible-light photocatalytic activity
- Source :
- Nanotechnology. 28:495710
- Publication Year :
- 2017
- Publisher :
- IOP Publishing, 2017.
-
Abstract
- A simple and convenient method was used to synthesize a graphitic carbon nitride (g-C3N4) nanoporous-tube by using SiO2 nanoparticles as pore formers. The structure of the g-C3N4 nanoporous-tube was characterized by the SEM and TEM images. Taking photodegradation of RhB as an example, the photocatalytic activity of the as-prepared g-C3N4 nanoporous-tube was investigated. It can photodegrade 90% RhB in 40 min under visible-light irradiation and obtain a k value of 0.04491 min-1, which is 8.16 times that of bulk g-C3N4, 3.09 times that of tubular g-C3N4 and 1.48 times that of tubular g-C3N4-SiO2. The significant enhancement in photocatalytic efficiency is due to the edge effect of the pores and the special structure of the tubes. In addition, the possible mechanism of photocatalytic degradation of RhB was also proposed based on the trapping experiment of active species, which indicated that the superoxide radicals ([Formula: see text]) and the holes (h +) were the main reactive species in this photocatalyst. This work may open up a new idea of innovation in g-C3N4 structure and inspire its follow-up study.
- Subjects :
- Materials science
Scanning electron microscope
Nanoporous
Mechanical Engineering
Graphitic carbon nitride
Nanoparticle
Bioengineering
02 engineering and technology
General Chemistry
Nitride
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
chemistry.chemical_compound
chemistry
Chemical engineering
Mechanics of Materials
Photocatalysis
General Materials Science
Graphite
Electrical and Electronic Engineering
0210 nano-technology
Photodegradation
Subjects
Details
- ISSN :
- 13616528 and 09574484
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- Nanotechnology
- Accession number :
- edsair.doi...........50101a782c014c1e323919e74c467d1c