Degradation of orange Ⅱ by "γ ray-BaF<sub>2</sub>-nano TiO<sub>2</sub>" radiocatalysis system

Guangxia QI; Xi ZHANG; Simeng ZHANG; Lei LI; Bangda WANG; Lianhai REN; Yi WANG; Wei WANG

doi:10.11889/j.1000-3436.2017.rrj.35.060301

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Degradation of orange Ⅱ by "γ ray-BaF₂-nano TiO₂" radiocatalysis system

RADIATION CHEMISTRY | 更新时间：2021-12-10

- Degradation of orange Ⅱ by "γ ray-BaF₂-nano TiO₂" radiocatalysis system
- Journal of Radiation Research and Radiation Processing Vol. 35, Issue 6, (2017)
- 作者机构：
  
  1.北京工商大学环境科学与工程系北京 100048
  2.北京工商大学中国轻工业清洁生产和资源综合利用重点实验室北京 100048
  3.固体废物处理与环境安全教育部重点实验室清华大学北京 100084
  4.北京市集中生物燃气利用工程技术研究中心清华大学北京 100084
- 作者简介：
- 基金信息：
  
  China Postdoctoral Science Foundation(2014M560983);Key Laboratory for Solid Waste Management and Environment Safety (Tsinghua University), Ministry of Education of China(SWMES201605);Beijing Technology and Business University(QNJJ2016-21)
- DOI：10.11889/j.1000-3436.2017.rrj.35.060301
  CLC：
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Guangxia QI, Xi ZHANG, Simeng ZHANG, et al. Degradation of orange Ⅱ by "γ ray-BaF₂-nano TiO₂" radiocatalysis system. [J]. Journal of Radiation Research and Radiation Processing 35(6):060301-8(2017)
DOI：

Guangxia QI, Xi ZHANG, Simeng ZHANG, et al. Degradation of orange Ⅱ by "γ ray-BaF₂-nano TiO₂" radiocatalysis system. [J]. Journal of Radiation Research and Radiation Processing 35(6):060301-8(2017) DOI： 10.11889/j.1000-3436.2017.rrj.35.060301.

摘要

为实现含偶氮染料废水妥善处理，采用三步式制备工艺合成硅基负载"BaF,2,-纳米TiO,2,"复合材料，实现了含金橙Ⅱ染料废水的脱色与降解矿化。研究发现，辐照时间和溶液pH值为确保低剂量辐照催化降解效果的重要条件参数，BaF,2,与TiO,2,存在最适掺杂比例（,m,BaF,2,：,m,TiO,2,=1：1），N,2,气氛有利于生成更多的羟基自由基降解金橙Ⅱ。"γ射线-BaF,2,-纳米TiO,2,"辐照催化体系对金橙Ⅱ、活性黑5和活性蓝222的脱色率可分别达到96.8%、95.3%和99.9%，TOC去除率分别为92.5%、40.2%和98.6%。研究结果说明，该复合材料可应用于含混合偶氮染料分子的印染废水处理，扩展了TiO,2,光催化技术的环境应用范围。

Abstract

In order to realize the proper treatment of wastewater containing azo dyes, a silica-base supported BaF,2,-nano-TiO,2, composite (hereinafter called the composite) was prepared by a three-step synthetic procedure and utilized for the decolorization and degradation of orange Ⅱ in aqueous solution. It was found that the irradiation time and solution pH value was important parameter that ensured the degradation effect of γ-rays at low dose. The optimal doping ratio of BaF,2, to nano-TiO,2, was determined to be 1:1 (,m,BaF,2,:,m,TiO,2,). Furthermore, it was found that a highly reductive atmosphere (N,2,) favored the formation of hydroxyl radicals (·OH), which were responsible for the efficient degradation and mineralization of orange Ⅱ. The decolorization rate of the orange Ⅱ, Reactive black 5 and Reactive blue 222 dyes solution by the radiocatalysis system was 96.8%, 95.3% and 99.9%, respectively; and total organic carbon (TOC) removal rate of the orange Ⅱ, Reactive black 5 and Reactive blue 222 dyes solution achieved 92.5%, 40.2% and 98.6%, respectively. Thus, it was shown that the composite could be applied to the treatment of wastewater containing azo dye mixtures. The results of this study extend the technical applications of the TiO,2, photocatalytic oxidation technology.

关键词

电离辐射辐照催化闪烁体复合材料偶氮染料

Keywords

Ionizing radiationRadiocatalysisScintillatorComposite materialAzo dye

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Degradation of orange Ⅱ by "γ ray-BaF2-nano TiO2" radiocatalysis system

DOI：10.11889/j.1000-3436.2017.rrj.35.060301

摘要

Abstract

关键词

Keywords

references

Degradation of orange Ⅱ by "γ ray-BaF₂-nano TiO₂" radiocatalysis system