Back to Search
Start Over
BiOBr/Ti3C2 nanocomposites prepared via an octanol solvothermal method to achieve enhanced visible photocatalytic properties.
- Source :
-
CrystEngComm . 2/14/2021, Vol. 23 Issue 6, p1507-1516. 10p. - Publication Year :
- 2021
-
Abstract
- BiOBr nanospheres grown in situ on lamellar Ti3C2 were synthesised in an octanol solvothermal system to obtain BiOBr/Ti3C2 heterojunction composites with high visible photocatalytic activity (OBT). The composition, crystal structure and morphology of OBT were characterised using X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscopy. The photoelectrochemical properties of OBT were tested via UV-vis diffuse reflectance spectroscopy (DRS), electrochemical impedance spectroscopy and transient photocurrents. Results showed that the BiOBr prepared with octanol demonstrates loose nanospheres with a diameter of approximately 2 μm and clear characteristic peak intensity of the (110) crystal plane. Compared with pure-phase BiOBr and BiOBr/Ti3C2 heterojunction synthesis with an ethylene glycol solvothermal method (EBT), the increased visible-light response threshold of the OBT band gap and the significantly enhanced photogenerated current density of OBT effectively improve the oxidation efficiency of the aromatic ring structure. The rhodamine B degradation rate of OBT is approximately 10% higher than that of EBT. Trapping agent experiments confirmed the dominant role of ˙O2− in OBT photocatalytic processes. The results of this study can provide a basis for the analysis of the photocatalytic mechanism of OBT. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 23
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 148719815
- Full Text :
- https://doi.org/10.1039/d0ce01688h