...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Visible-Light-Assisted Degradation of Dye Pollutants over Fe(III)-Loaded Resin in the Presence of H{sub}2O{sub}2 at Neutral pH Values
【24h】

Visible-Light-Assisted Degradation of Dye Pollutants over Fe(III)-Loaded Resin in the Presence of H{sub}2O{sub}2 at Neutral pH Values

机译：H {sub} 2O {sub} 2在中性pH值存在下可见光辅助染料在Fe（III）上降解染料污染物的研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A novel catalyst was synthesized by direct exchange of ferric ions onto a cationic resin (Amberlite IRA200). Upon visible light irradiation (λ> 420 nm) in the presence of H{sub}2O{sub}2, this catalyst was found to be highly effective for the degradation of nonbiodegradable cationic dyes, Malachite green, Rhodamine B, and Methylene blue, even at neutral pH values. It was also easy to separate from the degraded solution. By total organic carbon, FT-IR, and GC-MS analysis, the degradation process of Malachite green was shown to proceed with demethylation and phenyl ring openings into CO{sub}2 and small molecular compounds. EPR studies revealed that *OH radicals, other than *OOH/(O{sub}2){sup}(*-), were involved as the active species. A possible reaction mechanism is proposed on the basis of all the information obtained under various experimental conditions.
机译：通过将铁离子直接交换到阳离子树脂（Amberlite IRA200）上来合成新型催化剂。在H {sub} 2O {sub} 2的存在下，在可见光照射下（λ> 420 nm），发现该催化剂对不可生物降解的阳离子染料，孔雀石绿，若丹明B和亚甲基蓝的降解非常有效，即使在中性pH值下。从降解溶液中分离也很容易。通过总有机碳，FT-IR和GC-MS分析，孔雀石绿的降解过程表明脱甲基和苯环开环进入CO {sub} 2和小分子化合物。 EPR研究表明，除* OOH /（O {sub} 2）{sup}（*-）外，* OH自由基也作为活性物质。根据在各种实验条件下获得的所有信息，提出了一种可能的反应机理。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号