在CMK-3催化剂上支持的氧化纳米颗粒上催化减少有毒染料
Mohammed M Younus1, M A Sayed2, Mohamed El Saied3
1Special Processes Lab, Processes Development Division, Egyptian Petroleum Research Institute, EPRI, Nasr City, Cairo, 11727, Egypt.
Scientific reports
|July 17, 2024
概括
一种新型的氧化 (NiO) 纳米颗粒装载的半孔碳 (CMK-3) 催化剂有效地去除甲蓝 (MB) 染料. 这种稳定且可重复使用的催化剂为含有染料的废水整治提供了有前途的解决方案.
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:
- 污染废水的持久有机染料,如甲蓝 (MB) 造成了重大的环境挑战.
- 开发高效和稳定的异质催化剂对于有效的染料整治至关重要.
研究的目的:
- 合成和表征一种新型的含有NiO纳米粒子的中孔碳 (CMK-3) 催化剂,标记为NiO/CMK-3.
- 评估NiO/CMK-3的催化性能,以减少甲蓝 (MB) 染料.
- 研究合成催化剂的稳定性和可重复使用性.
主要方法:
- 容易合成NiO/CMK-3催化剂.
- 使用XRD,拉曼光谱,N2物理吸收,FTIR,FE-SEM,TEM和XPS进行表征.
- 使用NaBH4作为减少剂的MB染料的催化还原.
- 动力学研究以确定反应机制.
主要成果:
- NiO/CMK-3催化剂表现出高活性,在室温下3分钟内使用7.5mM L-1 NaBH4和0.1g L-1催化剂实现了超过99%的25mg L-1 MB染料的减少.
- 减少动力学遵循一个伪第一阶模型.
- 催化剂表现出极好的稳定性和可重复使用性,在5个周期后保持显著的活性.
结论:
- 合成的NiO/CMK-3催化剂对于快速减少甲蓝非常有效.
- 催化剂的卓越稳定性和可重复使用性使其成为含着染料的废水处理中的实际应用的有希望的候选者.
- /CMK-3是环境修复的可行的异质催化剂.
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