通过石墨支持的H2SO4-CeO2激活过氧化,以在中性pH下降解异化
Qihui Jiang1, Ruyi Qian1, Tongdong Shen1
1College of Chemical Engineering, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China.
一种新的硫酸氧化物/石墨感触催化剂有效地使用过氧化 (H2O2) 降解异化物 (INH). 这种先进的氧化过程显示出对环境修复应用的前景.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 催化剂是一种催化剂.
背景情况:
- 异化 (INH) 是一种广泛使用的药物,在释放后可能带来环境风险.
- 先进的氧化工艺 (AOP) 为降解持久有机污染物提供了有效的方法.
- 氧化 (CeO2) 和石墨 (GF) 分别以其催化和支性能而闻名.
研究的目的:
- 为了合成和描述在石墨 (H2SO4-CeO2/GF) 催化剂上支的硫酸氧化物.
- 评估H2SO4-CeO2/GF在激活过氧化 (H2O2) 降解异化 (INH) 的催化性能.
- 调查开发的催化剂的降解途径和稳定性.
主要方法:
- 通过浸和硫化预处理制备H2SO4-CeO2/GF.
- 使用X射线衍射 (XRD),FTIR,SEM和XPS进行表征.
- 在各种反应条件下监测INH去除的降解实验和分析中间体.
主要成果:
- 该H2SO4-CeO2/GF复合物表现出极好的催化活性,在120分钟内实现了89.4%的INH去除.
- 最佳条件包括H2O2 2.94 mM,催化剂剂量 2.6 g/L,INH 10 mg/L,pH 6.8 和 25 °C.
- 催化剂还证明了甲基色 (MO) 和诺弗洛素 (NOF) 的有效降解,表明其广泛适用性.
结论:
- 在石墨上支的硫酸氧化物是AOPs中H2O2激活的高效催化剂.
- 催化剂显示出良好的稳定性和在废水处理中实际应用的潜力.
- 该研究提出了INH的降解途径,有助于理解AOP机制.
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