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Ag2CrO4/Ti3C2Tx复合材料的合成及可见光光催化性能的研究.
Ag2CrO4/Ti3C2Tx复合材料的合成及可见光光催化性能的研究.
- Source :
-
Journal of Functional Materials / Gongneng Cailiao . 9/30/2019, Vol. 50 Issue 9, p9129-9134. 6p. - Publication Year :
- 2019
-
Abstract
- A new Ag2CrO4/Ti3C2Tx composite was prepared by simple precipitation method for the first time, and the two energy-level matched semiconductors were designed to form a heterojunction. The materials were characterized by XRD, SEM, EIS and DRS. The results showed that the pure Ti3C2Tx prepared by HF etching was accordion layered structure, and the polyhedral Ag2CrO4 nanoparticles were firmly adhered to the surface of Ti3C2Tx. The photocatalytic activity under visible light was studied. The results showed that the photocatalytic activity of the composite was the highest when the content of Ti3C2Tx was 0.4 wt%, which was 1.9 times that of pure Ag2CrO4. After repeated photocatalytic experiments, Ag2CrO4/Ti3C2Tx showed great stability. ESR and reactive specie trapping experiments showed that superoxide radicals and holes were the main active species. Based on the results obtained, the enhancement mechanism of photocatalytic activity of composite materials was proposed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10019731
- Volume :
- 50
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Journal of Functional Materials / Gongneng Cailiao
- Publication Type :
- Academic Journal
- Accession number :
- 138972754
- Full Text :
- https://doi.org/10.3969/j.issn.1001-9731.2019.09.021