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- Title
N掺杂C包覆NaTaO3复合材料制备及其可见光催化性能.
- Authors
胡海霞; 傅雅琴
- Abstract
The N-doped C coated NaTaO3 composite was prepared through sol-gel method by using tantalic chloride (TaCl5) and sodium acetate as raw materials, melamine as N sources, cetyl trimethyl ammonium bromide (CTAB) and polyvinylpyrrolidone (PVP) as surfactant. The synthesized sample was characterized in detail by XRD, TEM, XPS and UV-Vis DRS. The dye rhodamine B (RhB) was used as a model contaminant to evaluate the adsorption and photocatalytic activity of N-doped carbon coated NaTaO3. The results indicate that CTAB and PVP form ultra-thin carbon film around NaTaO3, which not only limits the growth of NaTaO3 particles, but also improves the adsorbability to target pollutants. The composites with tripolynitrile amines to TaCl5 molar ratio n=1.5 have the best visible light catalytic performance and the removal ratio of RhB achieves 96.46% under dark adsorption for 80 min and irradiation for 8 h. The photodegradation of RhB is in accordance with the pseudo first order reduction kinetics model.
- Subjects
CARBON films; SODIUM acetate; RHODAMINE B; VISIBLE spectra; COMPOSITE coating; PHOTODEGRADATION; SOL-gel materials; POVIDONE
- Publication
Acta Materiae Compositae Sinica, 2020, Vol 37, Issue 6, p1251
- ISSN
1000-3851
- Publication type
Article
- DOI
10.13801/j.cnki.fhclxb.20191204.001