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Efficient visible-light photocatalytic degradation of sulfadiazine sodium with hierarchical Bi7O9I3under solar irradiation.
Xu, MengMeng; Zhao, YaLei; Yan, QiShe.
Afiliação
  • Xu M; Institution of Chemistry and Molecular Engineering, Zhengzhou University, China E-mail: xumengmeng951@163.com.
  • Zhao Y; Institution of Chemistry and Molecular Engineering, Zhengzhou University, China E-mail: xumengmeng951@163.com.
  • Yan Q; Institution of Chemistry and Molecular Engineering, Zhengzhou University, China E-mail: xumengmeng951@163.com.
Water Sci Technol ; 72(12): 2122-31, 2015.
Article em En | MEDLINE | ID: mdl-26675999
Bi7O9I3, a kind of visible-light-responsive photocatalyst, with hierarchical micro/nano-architecture was successfully synthesized by oil-bath heating method, with ethylene glycol as solvent, and applied to degrade sulfonamide antibiotics. The as-prepared product was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-visible diffuse reflection spectra and scanning electron microscopy (SEM). XRD and XPS tests confirmed that the product was indeed Bi7O9I3. The result of SEM observation shows that the as-synthesized Bi7O9I3 consists of a large number of micro-sheets with parallel rectangle structure. The optical test exhibited strong photoabsorption in visible light irradiation, with 617 nm of absorption edges. Moreover, the difference in the photocatalytic efficiency of as-prepared Bi7O9I3 at different seasons of a whole year was investigated in this study. The chemical oxygen demand removal efficiency and concentration of NO(3)(-) and SO(4)(2-) of solution after reaction were also researched to confirm whether degradation of the pollutant was complete; the results indicated a high mineralization capacity of Bi7O9I3. The as-synthesized Bi7O9I3exhibits an excellent oxidizing capacity of sulfadiazine sodium and favorable stability during the photocatalytic reaction.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Óxidos / Sulfadiazina / Bismuto / Compostos de Iodo / Iodetos / Luz Idioma: En Revista: Water Sci Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2015 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Óxidos / Sulfadiazina / Bismuto / Compostos de Iodo / Iodetos / Luz Idioma: En Revista: Water Sci Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2015 Tipo de documento: Article