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采用化学吸附法制备了类石墨相氮化碳负载埃洛石纳米管(g-C_3N_4/HNTs)的复合型光催化材料。利用扫描电镜、X射线衍射、Fourier变换红外光谱、紫外-可见漫反射光谱表征技术对合成材料的形貌和结构进行研究,利用可见光照射对降解盐酸四环素(TC)的光催化活性进一步考察。研究结果表明,HNTs负载于g-C_3N_4表面,二者表现出协同催化作用。当HNTs的质量含量为20%时,g-C_3N_4/HNTs复合材料在降解盐酸四环素溶液过程中催化活性最强。经过120min可见光照射,TC的降解率高达96.31%,证明该复合材料具有优良的光催化活性。
A composite photocatalytic material with graphite-like carbonized halloysite nanotubes (g-C_3N_4 / HNTs) was prepared by chemical adsorption. The morphology and structure of the synthesized materials were studied by scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy and ultraviolet-visible diffuse reflectance spectroscopy. The photocatalytic activity of tetracycline hydrochloride (TC) degraded by visible light irradiation was investigated further. The results showed that HNTs were supported on the surface of g-C_3N_4, and both showed synergistic catalysis. When the content of HNTs was 20%, the catalytic activity of g-C_3N_4 / HNTs composites was the highest in degradation of tetracycline hydrochloride solution. After 120min visible light irradiation, the degradation rate of TC was as high as 96.31%, which proves that the composite has excellent photocatalytic activity.