Abstract: The overuse and misuse of ceftriaxone sodium is a serious issue threating human and ecological health.It is urgent to explore an effective way to eliminate antibiotic residues from the aquatic environment.Bulk g-C3N4 and nanoscale g-C3N4 photocatalytic materials are prepared successfully via high temperature calcination method,and both are characterized by XRD,SEM,FT-IR,UV-Vis and PL,etc.Photocatalytic degradation of ceftriaxone sodium over the as-prepared g-C3N4 materials under visible light irradiation is carried out to evaluate the catalytic activity and investigate the catalytic mechanism.The results indicate that the degradation rates over bulk g-C3N4 and g-C3N4 nanosheets are 67.74% and 85.84%,respectively when the degradation under visible light irradiation lasts for 120 min,the mass fraction of ceftriaxone sodium is 10 mg·mL-1 and the dosage amount of semi-conductive materials is 0.1 g.The g-C3N4 nanosheets shows much higher photocatalytic activity than bulk g-C3N4.It is found through exploring the catalytic mechanism that h+ and ·OH play major roles in catalytic actions,·O-2 comes next.Moreover,the as-prepared g-C3N4 nanosheets samples are of high stability after three times of uses.
赵艳艳, 梁旭华, 邓寒霜, 李筱玲. g-C3N4光催化材料的制备及降解水中头孢曲松钠[J]. 现代化工, 2018, 38(6): 128-132.
ZHAO Yan-yan, LIANG Xu-hua, DENG Han-shuang, LI Xiao-ling. Synthesis of g-C3N4 photocatalytic materials and applications in degradation of ceftriaxone sodium. Modern Chemical Industry, 2018, 38(6): 128-132.
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