氨基功能化减少的氧化石墨烯支的银纳米颗粒用于优质的有机污染物的催化降低
Vijina C1, Majitha Kp1, Shima P Damodaran2
1Department of Chemistry, Kannur University, Kannur, Kerala, 670 327, India.
一种新的氨基功能化的减少氧化石墨烯支的银纳米粒子 (AgNPs) 纳米混合体被合成,以有效减少有机污染物. 这种RGO/AgNPs催化剂表现出卓越的活性和可回收性,用于环境修复.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 环境化学环境化学
背景情况:
- 石墨烯氧化物 (GO) 和减少的石墨烯氧化物 (RGO) 是广泛研究的纳米材料.
- 银纳米粒子 (AgNPs) 具有出色的催化性能.
- 为有机污染物降解开发高效的催化剂对于环境保护至关重要.
研究的目的:
- 为了合成氨基功能化的RGO支持的AgNP (RGO/AgNP) 纳米混合.
- 调查氨基三甲基 (APTMS) 在控制AgNP大小和分布方面的作用.
- 评估RGO/AgNPs纳米混合物的催化效率,以减少有机污染物.
主要方法:
- 使用GO与APTMS功能化的RGO/AgNPs纳米混合物的单热水合成.
- 使用XRD,SEM,TEM,FT-IR和拉曼光谱进行表征.
- 用于减少4-尼托醇 (4-NP) 和甲蓝 (MB) 的催化评价.
主要成果:
- 在RGO上,APTMS的功能化导致了统一的,小尺寸的球形AgNP.
- 与之前的催化剂相比,RGO/AgNPs纳米混合物显示了对4-NP和MB减少的优越催化活性.
- 催化还原遵循具有高速率常数的伪单分子动力学.
- 催化剂在五个循环中表现出极好的可回收性.
结论:
- 氨基胺功能化的RGO支持的AgNP提供了一个简单,环保和高效的催化系统.
- 由APTMS控制的纳米混合体的结构是其增强的催化性能的关键.
- 这种RGO/AgNPs纳米混合物是有机污染物的环境修复的有希望的候选人.
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