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首页> 外文期刊>Materials Chemistry and Physics >Preparation, characterization and photocatalytic activity evaluation of NaBiO_3·2H_2O and NaBiO_2·xH_2O nanosheets
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Preparation, characterization and photocatalytic activity evaluation of NaBiO_3·2H_2O and NaBiO_2·xH_2O nanosheets

机译:NaBiO_3·2H_2O和NaBiO_2·xH_2O纳米片的制备,表征和光催化活性评估

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摘要

In this paper, NaBiO_3·2H_2O and NaBiO_3·H_2O photocatalysts were synthesized by oxidation technique and hydrothermal method, respectively. The microstructure and properties of the photocatalysts were characterized in detail. The photocatalytic activity of the photocatalysts was investigated by photo-catalytic oxidation of Rhodamine B under visible light illumination. The results showed that the photocatalytic activity of NaBiO_3·2H_2O is higher than that of NaBiO_3·xH_2O. Compared with NaBiO_3·xH_2O, the absorption wavelength range of NaBiO_3·2H_2O is extended about 40 nm towards visible light. The appearance of NaBiO_3·2H_2O is flower-like aggregates with some loose bulk nanosheets, and NaBiO_3·xH_2O is composed of 2 dimensional hexagon nanosheets. ·O_2~- and ·OH were proved to be the dominant reactive species in the photocatalytic reactions of NaBiO_3·2H_2O and NaBiO_3·xH_2O. The mechanisms of the influence on the photocatalytic activity were also discussed.
机译:本文分别采用氧化技术和水热法合成了NaBiO_3·2H_2O和NaBiO_3·H_2O光催化剂。详细描述了光催化剂的微观结构和性能。在可见光照射下,通过罗丹明B的光催化氧化反应研究了光催化剂的光催化活性。结果表明,NaBiO_3·2H_2O的光催化活性高于NaBiO_3·xH_2O。与NaBiO_3·xH_2O相比,NaBiO_3·2H_2O的吸收波长范围向可见光延伸约40 nm。 NaBiO_3·2H_2O的外观为花状聚集体,具有一些疏松的块状纳米片,NaBiO_3·xH_2O由二维六角形纳米片组成。在NaBiO_3·2H_2O和NaBiO_3·xH_2O的光催化反应中,·O_2〜-和·OH是最主要的反应物种。还讨论了影响光催化活性的机理。

著录项

  • 来源
    《Materials Chemistry and Physics》 |2013年第3期|748-755|共8页
  • 作者单位

    Department of Chemistry, Huaibei Normal University, Anhui, Huaibei 235000, People's Republic of China,Department of Chemistry, Anhui Science and Technology University, Anhui, Fengyang 233100, People's Republic of China;

    Department of Chemistry, Huaibei Normal University, Anhui, Huaibei 235000, People's Republic of China;

    Department of Chemistry, Huaibei Normal University, Anhui, Huaibei 235000, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Microporous materials; Semiconductors; Crystal structure; Surface properties;

    机译:微孔材料;半导体;晶体结构表面特性;

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