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Efficiently enhancing the photocatalytic activity of g‐C 3 N 4 by a simple advanced successive activation method
- Source :
- Micro & Nano Letters. 13:403-406
- Publication Year :
- 2018
- Publisher :
- Institution of Engineering and Technology (IET), 2018.
-
Abstract
- High activated graphitic carbon nitride (g-C3N4) was initially produced by a typical calcination of melamine, and then modified by a convenient successive activation: protonated in hydrothermal hydrochloric acid (g-C3N4-1) and subsequently immersed in aqueous sodium hydroxide solution (g-C3N4-2). Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and thermogravimetry were used to characterise the morphology, crystal structure and thermal stability of the as-prepared samples. The SEM and TEM showed that g-C3N4-2 had a much smaller aggregate size than g-C3N4-1 and obviously displayed porous structures. The XRD patterns indicated the decrease of inter-lamellar spacing between the layers of samples and the increase of stretched properties of g-C3N4-2. Under visible-light irradiation, the modified g-C3N4 showed higher photocatalytic activity for degradation of rhodamine B solution than pristine samples due to the tiny particles aggregate and porous structure. Thus, the method of acid and alkali treatment will widen the photocatalysis and application of g-C3N4.
- Subjects :
- Materials science
Scanning electron microscope
Biomedical Engineering
Graphitic carbon nitride
Bioengineering
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
0104 chemical sciences
law.invention
Thermogravimetry
chemistry.chemical_compound
chemistry
Chemical engineering
law
Transmission electron microscopy
Photocatalysis
Rhodamine B
General Materials Science
Calcination
Thermal stability
0210 nano-technology
Subjects
Details
- ISSN :
- 17500443
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- Micro & Nano Letters
- Accession number :
- edsair.doi...........4035a83d055d26a4fc17760d3938abd3