期刊
CATALYSIS TODAY
卷 335, 期 -, 页码 228-235出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2018.11.047
关键词
Diatom; Cu2-xS; Photocatalyst; Degradation; Organic pollutant
资金
- National Natural Science Foundation of China [81472001, 31400851, 21536010]
- Minjiang Scholars Program of Fujian Province
- Tongjiang Scholars Program of Quanzhou City
- Fourth Health Education Joint Development Project of Fujian Province [WKJ-2016-2-36]
- Natural Science Foundation of Fujian Province [2015J05030]
Diatom frustules with hierarchical structures have been widely investigated in many fields due to their unique optical features, excellent mechanical resistance and extraordinarily intricate pore patterns. Herein, Cu2-xS modified diatomite has been successfully fabricated for the first time via a mild method at room temperature. The Cu2-xS nanoparticles with diameters of 50-100 nm were uniformly distributed on the diatomite. The as-prepared Cu2-xS-diatomite (Cu2-xS-DE) exhibits excellent photocatalytic degradation efficiencies for MB and MO, which reach to 99.1% and 96.9% respectively in 40 min under the irradiation of UV-vis light with 20 mg photocatalyst. The degradation mechanism of the organic pollutant over the Cu2-xS-DE/H2O2 reaction system was also proposed. This work provides an effective strategy to design and prepare of the diatom-based nanomaterials with efficient photocatalytic degradation activity, which is of great value for the environmental applications.
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