期刊
MATERIALS
卷 14, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/ma14081967
关键词
graphitic carbon nitride; melamine; melamine-cyanurate complex; photocatalysis; ofloxacin; ampicillin
类别
资金
- Czech Science Foundation [19-15199S]
- EU structural funding in Operational Program Research, Development and Education [CZ.02.1.01/0.0/0.0/16_019/0000853]
- VSB-TU Ostrava [SP 2021/46]
- Large Research Infrastructure ENREGAT [LM2018098]
Graphitic carbon nitride (g-C3N4, or CN) was prepared by heating melamine and melamine-cyanurate complex in air, with the latter showing higher photocatalytic activity in decomposing ofloxacin compared to ampicillin.
Graphitic carbon nitride (g-C3N4, hereafter abbreviated as CN) was prepared by the heating of melamine (CN-M) and melamine-cyanurate complex (CN-MCA), respectively, in air at 550 degrees C for 4 h. The specific surface area (SSA) of CN-M and CN-MCA was 12 m(2) g(-1) and 225 m(2)g(-1) and the content of oxygen was 0.62 wt.% and 1.88 wt.%, respectively. The band gap energy (E-g) of CN-M was 2.64 eV and E-g of CN-MCA was 2.73 eV. The photocatalytic activity of the CN materials was tested by means of the decomposition of antibiotics ofloxacin and ampicillin under LED irradiation of 420 nm. The activity of CN-MCA was higher due to its high SSA, which was determined based on the physisorption of nitrogen. Ofloxacin was decomposed more efficiently than ampicillin in the presence of both photocatalysts.
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