纳米复合材料
光催化
介孔材料
材料科学
光降解
降级(电信)
化学工程
四环素
环境修复
可见光谱
纳米技术
催化作用
化学
有机化学
光电子学
污染
电信
生态学
生物化学
抗生素
计算机科学
工程类
生物
作者
Reda M. Mohamed,Adel A. Ismail,Mohammad W. Kadi,Ajayb S. Alresheedi,I.A. Mkhalid
出处
期刊:ACS omega
[American Chemical Society]
日期:2021-02-23
卷期号:6 (9): 6438-6447
被引量:30
标识
DOI:10.1021/acsomega.1c00135
摘要
Herein, we report a simple incorporation of PtO NPs at diverse percentages (0.2–0.8 wt %) onto a highly crystalline and mesoporous ZnO matrix by the wet-impregnation approach for degradation of tetracycline (TC) upon visible light exposure. These well-dispersed and small-sized PtO NPs provide the mesoporous PtO–ZnO nanocomposites with outstanding photocatalytic performance for complete TC degradation. The optimized 0.6% PtO–ZnO photocatalyst exhibits excellent TC degradation, and its degradation efficiency reached ∼99% within 120 min. The photocatalytic performance of the 0.6% PtO–ZnO nanocomposite is 20 and 10 times higher than that of pristine ZnO and commercial P-25, respectively. The photodegradation rate of TC over the 0.6% PtO–ZnO nanocomposite is 34 and 12.5 times greater than that of pristine ZnO and commercial P-25, respectively. This is because of the large surface area, unique porous structure, synergistic effect, and broad visible light absorption of the PtO–ZnO nanocomposite. Moreover, mesoporous PtO–ZnO nanocomposites showed a high stability and recyclability over five iterations. This work demonstrates the remarkable role of combining PtO and ZnO photocatalysts in providing nanocomposites with significant potential for the preservation of human health through wastewater remediation.
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