在可见光照射照射下,甲蓝在CA-BMO上的光诱导吸附-脱附行为
Jianbiao Peng1, Bingjie Wang1, Zhiguo Cao1
1School of Environment, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang, 453007, People's Republic of China.
Environmental science and pollution research international
|October 2, 2023
概括
用酸修饰的石酸盐 (CA-BMO) 显著增强了甲基蓝 (MB) 的吸附. 这种新型材料还可以在可见光下实现高效,无试剂的MB溶解,有助于染料回收和废水处理.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术纳米技术
背景情况:
- 废水处理需要有效的方法来去除持久有机污染物,如甲蓝 (MB).
- 石酸盐 (Bi2MoO6) 显示出作为吸附剂的潜力,但其效率和可回收性需要改进.
研究的目的:
- 用酸 (CA-BMO) 修改Bi2MoO6,以增强MB吸附和可见光诱导的脱吸.
- 为了研究吸附-脱附机制,并探索染料回收中的应用.
主要方法:
- 对CA-BMO的热水合成.
- 使用SEM,FT-IR,XRD和XPS进行表征.
- 在不同的条件下 (光,pH,金属离子) 进行吸附-脱附实验.
主要成果:
- 与未经修改的Bi2MoO6相比,CA-BMO显示MB吸附率增加了4.6倍,达到92.9%的去除率和18.9毫克g-1容量.
- 从CA-BMO在可见光下实现了有效的MB脱吸,这取决于光波长,pH和金属离子.
- 在CA-BMO上的碳素基作为吸附点,光诱导的键损伤促进了脱附.
结论:
- 酸修饰显著提高了Bi2MoO6对MB吸附的性能.
- 可见光触发的无试剂脱吸提供了染料回收的可持续策略.
- CA-BMO提出了一种有前途的基于Bi的吸附剂,用于处理染料污染的废水而不会产生二次污染.
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