用BiOI和Ag3PO4装饰的氨基功能化减少石墨烯氧化物作为抗RhB的新型可见光催化剂
Somayeh Rahdar1, Mojtaba Davoudi2,3, Najmaldin Ezaldin Hassan4
1Student Research Committee, Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran.
Scientific reports
|October 29, 2025
概括
这项研究开发了一种新的ArGO@BiOI@Ag3PO4光催化剂,用于有效地去除诸如罗达胺B (RhB) 等有机染料. 复合材料显著提高了催化性能和稳定性,为废水处理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
- 纳米技术纳米技术
背景情况:
- 像BiOI这样的基于石的半导体是降解有机污染物的有效光催化剂.
- 纯半导体通常需要修改以提高其光活性和催化效率.
- 新出现的污染物,如有机染料,带来了重大的环境挑战,需要先进的整治技术.
研究的目的:
- 为了合成和表征一种新的异构连接光催化剂,ArGO@BiOI@Ag3PO4,用于加强有机染料的降解.
- 调查氨基功能化对减少氧化石墨烯 (rGO) 和其融入BIOI矩阵的影响.
- 评估在各种条件下和在真实水样中开发的复合物的光催化性能和稳定性.
主要方法:
- 制备一种新型的异构连接,包括 bismuth oxyiodide (BiOI),氨基功能化减少石墨烯氧化物 (ArGO) 和银酸盐 (Ag3PO4).
- 使用罗达胺B (RhB) 作为模型污染物的光催化降解实验.
- 使用响应表面方法 (RSM) 优化反应参数,包括催化剂剂量,pH,染料度和辐射时间.
- 动力学研究和激素捕捉实验以阐明降解机制.
- 通过多个降解周期和在真实水矩阵中测试,评估光催化剂稳定性.
主要成果:
- 该ArGO@BiOI@Ag3PO4复合物表现出优越的光催化活性,在35分钟内达到99.40%的RhB去除,与BiOI (92.25%) 和ArGO@BiOI (92.57%) 相比.
- 在优化条件下 (620 mg/L催化剂,pH 5.4,5 mg/L RhB,35 分钟) 获得了~99%的去除.
- 在真实水样中,复合材料表现出高效率 (89.76%-98.29%).
- 光催化降解遵循一阶动力学模型,在阳光下速度常数大约是LED光线的7.5倍.
- 在四个周期中,ArGO@BiOI@Ag3PO4催化剂保持了显著的效率,从99.40%降低到71.4%.
结论:
- 开发的ArGO@BiOI@Ag3PO4异构连接是一种高效和稳定的光催化剂,用于从水中去除有机染料.
- rGO的氨基功能化和异质连接结构的形成有效地减少了能量带隙,并抑制了电子孔重组.
- 这些发现凸显了这种复合材料在废水处理和环境修复方面的实际应用潜力.
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