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/双金属碳催化剂作为一种高效的促进剂,用于PMS反应性染料降解

Tianning Wang¹, Xiuming Liu^1,2, Jixian Gong¹

¹College of Textile Science and Engineering, Tiangong University, 399 Binshui West Road, Tianjin 300387, China.

Langmuir : the ACS journal of surfaces and colloids

|May 14, 2024

概括

在酸盐上固定的铜有效地激活硫酸盐 (PMS) 进行反应性染料降解. 这种双金属催化剂在处理染色废水方面表现出高效率,稳定性和可重复使用性.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
催化剂是一种催化剂.

背景情况:

双金属催化剂增强硫酸盐 (PMS) 激活,以降解污染物.
废水中的反应性染料给环境带来了挑战.
酸盐是催化剂固定化的合适支材料.

研究的目的:

准备和描述在酸盐 (CuCo-CTs) 上固定的铜作为PMS激活的催化剂.
研究CuCo-CTs/PMS系统在各种反应性染料上的降解效率.
阐明催化降解机制,评估催化剂的稳定性和可重复使用性.

主要方法:

铜对酸盐的固定.
使用CuCo-CTs和PMS与不同反应性染料进行的催化降解实验.
降解动力学分析,活性物种识别 (激素清除) 和催化剂可重复使用性测试.
使用紫外线对光谱学的表征.

主要成果:

在30分钟内,CuCo-CTs/PMS系统实现了90%以上的反应性染料 (乙烯紫,利,二利) 的降解.
在室温下,在广泛的pH范围 (3-11) 中观察到高的催化活性.
在10分钟内确认了RV5染料97%以上的降解,催化剂显示出良好的稳定性和可重复使用性 (92.8%在八个循环后).
降解遵循伪第一阶动力学,涉及激进和非激进的途径,单片氧 (O2) 作为主要的活性物种.

结论:

CuCo-CTs是PMS激活和反应性染料降解的高效双金属催化剂.
催化剂表现出优异的性能,稳定性和废水处理的可重复使用性.
这项研究提供了一种可行的硫酸盐氧化方法,用于处理染色废水.

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