Abstract
The three-dimensional flower-like Bi2WO6 was synthesized through a one-step microwave method (the reaction temperature was 434 K and the reaction took 10 min) with the assistance of ethanolamine (EA). The prepared samples were characterized by X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, ultraviolet–visible spectroscopy, PL, X-ray photoelectron spectroscopy and Brunauer–Emmett–Teller analysis. Methyl orange was used as target pollutant to evaluate the photocatalysis property of samples. Furthermore, the influence of the mechanism of EA on the structure and catalytic performance of Bi2WO6 was discussed. The detailed characterizations revealed that the three-dimensional flower-like Bi2WO6 was successfully synthesized with the assistance of EA. The results confirmed that EA significantly influenced the morphology of Bi2WO6 products. The addition of EA can effectively alter the pressure of the reaction and improve the crystal phase and structure of Bi2WO6 photocatalysts, enhancing the photocatalytic activity of samples and improving the photocatalytic efficiency. EA can serve as an assembling agent and structure-directing agent resulting in the formation of flower-like architectures. With the increase of the amount of EA, the as-prepared Bi2WO6 sample gradually forms a flower-like structure, leading to a shorter time of light holes migrating to the surface of the catalyst. It makes the compound rate significantly decreased, and improves the photocatalytic efficiency of the sample.
Highlights
Organic pollution has become a subject of extensive scientific investigation
Since the heating rate of the microwave method is fast, which avoids the abnormal growth of crystal particles in the process of material synthesis, the materials with high purity, fine particle size and uniform distribution can be prepared in a short time and low temperature [17,18]
EA was introduced as an assembling and structure-directing agent to controllable synthesis of Bi2WO6 architectures without any other long-chain organic molecules assisting in a one-step microwave process
Summary
Organic pollution has become a subject of extensive scientific investigation. It is well known that the photocatalytic properties of semiconductor catalyst materials have an important relationship with their crystal shape, morphology and particle size [7,8,9]. The different preparation methods of Bi2WO6 and the different additives in the synthesis process make the morphology and size of samples different, which will greatly affect the photocatalytic activity of samples. Since the heating rate of the microwave method is fast, which avoids the abnormal growth of crystal particles in the process of material synthesis, the materials with high purity, fine particle size and uniform distribution can be prepared in a short time and low temperature [17,18]. EA was introduced as an assembling and structure-directing agent to controllable synthesis of Bi2WO6 architectures without any other long-chain organic molecules assisting in a one-step microwave process. The morphology and photocatalytic properties of the synthetic samples were investigated, and the action mechanism of EA was discussed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
