中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 28 No. 10 October 2018 |
（1. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
2. Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha 410083, China;
3. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China;
4. Department of Chemical Engineering, College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China）
Abstract:A novel Bi2S3 microsphere was fabricated through one-pot urea-assisted solvothermal method. The synthesized Bi2S3 microsphere was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transformed infrared spectroscopy (FT-IR) and thermal gravimetric analysis and differential thermal analysis (DTA-TG). Subsequently, the photocatalytic performances of Bi2S3 microsphere were evaluated by photocatalytic degradation of methyl orange (MO) simulation solution under visible-light irradiation. The results show that, Bi2S3 microsphere could be used as a potential cost-efficient catalysis for eliminating of methyl orange from aqueous solutions, whose degradation rate could reach 91.07% within 180 min. Besides, a tentative photocatalytic reaction mechanism was discussed according to the energy band position. Therefore, this work indicated a simplistic approach for the fabrication of visible-light responsive Bi2S3 microsphere photocatalyst, which can be used as a valuable candidate in solar energy conversion and environment pollution treatment.
Key words: Bi2S3 microsphere; hydrothermal methods; photocatalytic degradation
