首页|Construction of Fe3O4@FeS2@C@MoS2 Z-scheme heterojunction with sandwich-like structure: Enhanced catalytic performance in photo-Fenton reaction and mechanism insight
Construction of Fe3O4@FeS2@C@MoS2 Z-scheme heterojunction with sandwich-like structure: Enhanced catalytic performance in photo-Fenton reaction and mechanism insight
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
Herein, the sandwich-like Fe3O4@FeS2@C@MoS2 composite was prepared via coating MoS2 shell on the surface of core/shell Fe3O4@C composite. During the coating process, Fe3O4 was partly sulfurized to FeS2, whose energy band was well-matched with that of MoS2 for a Z-scheme heterojunction. The residual Fe3O4 ensured the rapid separation of heterojunction by magnet. In photo-Fenton reaction, 81.5% of tetracycline was degraded within 40 min, which was higher than the sum of degradation efficiency of Fenton reaction and photocatalytic reaction. 93.6% of the degradation efficiency in the 1st cycle was still maintained after 5 cycles. In mechanism study, the sources of ?OH, ?O2-, 1O2 and h+ were carefully traced, and the contributions of these radicals followed the order: ?OHsurf>?O2->1O2>h+>?OHfree. An inner electric field was built at the interface by analyzing the energy band and work functions, which driven the charge carriers transfer followed a Z-scheme path. The findings in this manuscript were beneficial for designing catalysts with high photo-Fenton activity.
Inner electric fieldMagnetic propertyPhoto-Fenton reactionSandwich-like structureZ-scheme heterojunction
Deng X.、Mei Y.、Li J.、Guo C.、Xin B.、Wu J.、Guo Y.、Yang Y.、Yao T.
展开 >
Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education School of Chemistry and Materials Science Heilongjiang University
Fujian Key Laboratory of Novel Functional Textile Fibers and Materials Minjiang University
School of Chemistry and Chemical Engineering Harbin Institute of Technology
NSTL
Elsevier
