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用铜修饰的纳米碳复合物用于增强硫化吸附:持久性自由基和基于Cu的氧化物的协同作用

Qiushuang Li¹, Fen Li¹, Ying Yang¹

¹Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, P. R. China.

Langmuir : the ACS journal of surfaces and colloids

|September 5, 2025

概括

用铜修饰的纳米碳复合材料有效地去除硫化 (H2S). 由于持久的自由基和铜氧化物,优化合成产生高吸附能力,将H2S转化为固体副产品.

科学领域:

材料科学
环境化学
纳米技术

背景情况:

硫化 (H2S) 是一种有毒和腐蚀性气体,需要有效的去除方法.
由于其高表面积和可调性特性,纳米碳复合材料为气体吸附提供了有前途的平台.
开发先进材料的低温合成途径对于可持续的工业应用至关重要.

研究的目的:

通过低温水热方法合成铜改性纳米碳复合材料 (OMC).
研究合成参数 (修饰剂剂量,温度,时间) 对OMC结构和H2S吸附的影响.
阐明 OMC 的增强 H2S 吸附性能背后的机制.

主要方法:

使用二维碳纳米板,铜酸盐和低温水热工艺制备OMC.
铜酸盐与碳纳米板的比率,水热温度和停留时间的系统变化.
合成的OMC的H2S吸附能力和性能的评估.

主要成果:

最佳的OMC合成条件 (Cu:C比为2,130°C,8小时) 产生了最佳的H2S吸附能力 (46.72 mg/g).
这种增强的性能归因于持久性自由基和铜氧的协同作用.
铜的修饰促进了持续的自由基生成,增加了H2S的氧化,而铜氧化物提供了直接的吸附点.

结论:

低温水热合成是生产高性能H2S吸附剂的有效方法.
在OMC中持久性自由基和氧化铜的协同作用显著增强了H2S的去除.
这项研究扩大了持久性自由基在控制H2S污染方面的应用,并推动了纳米碳复合材料的开发.

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Precipitation and Co-precipitation

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Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...