通过表面化合成醇修饰的CNC的合成和特性
Mikhail A Torlopov1, Ilia S Martakov1, Vasily I Mikhaylov1
1Institute of Chemistry of Federal Research Centre "Komi Science Centre, the Ural Branch, Russian Academy of Sciences", 167982, 48 Pervomayskaya st., Syktyvkar, Russian Federation.
Carbohydrate polymers
|August 11, 2023
概括
这项研究合成了用于先进材料的新型含SH纤维素纳米晶体 (CNC-SH). 这些经过修改的CNC显示出独特的质性质和有效的Cr(VI) 吸附,为环境修复和材料科学提供了潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 聚合物化学 聚合物化学
背景情况:
- 含硫 (SH) 的聚合物和纳米粒子对于新材料的开发至关重要.
- 纤维素纳米晶 (CNC) 为材料功能化提供了一个可持续和多功能平台.
研究的目的:
- 合成tosiyl功能化的纤维素纳米晶体 (CNC-Ts),随后将其转化为含SH的纤维素纳米晶体 (CNC-SH).
- 描述合成的CNC-SH的结构和特性,以用于潜在的应用.
主要方法:
- 通过水性有机乳液合成CNC-Ts,然后进行核替代和水解,以产生CNC-SH.
- 使用TEM,XRD,CP/MAS 13C NMR和FTIR光谱学的结构分析.
- 使用元素分析,潜度定位,Folin-Ciocalteu和Ellman试剂对SH组进行量化.
主要成果:
- 成功合成了高达2.5mmol·g-1 Ts-函数的CNC-Ts,并将其转换为CNC-SH,保留了CNC结构.
- 在CNC-SH上描述了SH-组,并指出了部分氧化和参与结的情况.
- 在添加H2O2后观察到CNC-SH水溶中的pH依赖的质变化,并显示出高的Cr (VI) 吸附能力和光还原性.
结论:
- 开发的方法可以创建具有可调节属性的功能化的CNC-SH.
- 在环境修复 (Cr (VI) 吸附) 和光还原应用中,CNC-SH表现出有前途的功能.
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