Photocatalytic Properties of Immobilised Graphitic Carbon Nitride on the Alumina Substrate

被引:8
作者
Vuksic, Milan [1 ]
Kocijan, Martina [1 ]
Curkovic, Lidija [1 ]
Radosevic, Tina [2 ]
Vengust, Damjan [3 ]
Podlogar, Matejka [2 ,4 ]
机构
[1] Univ Zagreb, Fac Mech Engn & Naval Architecture, Dept Mat, Ivana Lucica 5, Zagreb 10000, Croatia
[2] Jozef Stefan Inst, Dept Nanostruct Mat, Jamova Cesta 39, SI-1000 Ljubljana, Slovenia
[3] Jozef Stefan Inst, Adv Mat Dept, Jamova Cesta 39, SI-1000 Ljubljana, Slovenia
[4] Univ Ljubljana, Fac Chem & Chem Technol, Vecna Pot 113, SI-1000 Ljubljana, Slovenia
来源
APPLIED SCIENCES-BASEL | 2022年 / 12卷 / 19期
关键词
graphitic carbon nitride; alumina ceramic; photocatalysis; methylene blue; DEGRADATION; SURFACE; G-C3N4; NANOCOMPOSITES; WATER; ZNO;
D O I
10.3390/app12199704
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Textile industries significantly impact the contamination of wastewater. Conventional wastewater treatment methods consider the most common pollutants; however, they are very expensive and commonly produce toxic by-products. In the scientific community, advanced oxidation processes appear to be the most appealing, and a majority of the published work considers heterogeneous photocatalysis for the degradation of various toxic chemicals. For convenience, the reaction is performed directly in the water environment. In this work, a metal-free graphitic carbon nitride (g-C3N4) was prepared through a simple thermal method using urea as a precursor. Prepared g-C3N4 was deposited on the surface of the alumina ceramic ring by the dip-coating method using ethylene glycol as binder. The alumina ceramic ring, as substrate, was prepared by the slip casting method. Photocatalytic properties of immobilised graphitic carbon nitride were used for degradation of methylene blue as a model pollutant under simulated solar light irradiation. The photocatalyst was characterised by XRD, FTIR, UV-Vis DRS, TGA, BET and SEM/EDX analyses. The photocatalytic degradation of MB from an aqueous solution was found to increase with increasing irradiation time. It was found that the graphitic carbon nitride immobilised on alumina ceramic is convenient for largescale environmental applications because the whole setup is cheap, nontoxic, easy to operate and offers reusability with a high removal rate of MB after three consecutive cycles.
引用
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页数:13
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