AgNPs encapsulated by an amine-functionalized polymer nanocatalyst for CO2 fixation as a carboxylic acid and the oxidation of cyclohexane under ambient conditions,New Journal of Chemistry

当前位置： X-MOL 学术 › New J. Chem. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

AgNPs encapsulated by an amine-functionalized polymer nanocatalyst for CO2 fixation as a carboxylic acid and the oxidation of cyclohexane under ambient conditions
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020/03/02 , DOI: 10.1039/c9nj05865f
Noor Salam _{1,

1,

2,

3,

4} , Priyanka Paul _{1,

1,

2,

3,

4} , Swarbhanu Ghosh _{1,

2,

3,

4} , Usha Mandi _{1,

4,

5,

6} , Aslam Khan _{7,

8,

9,

10} , Seikh Mafiz Alam _{1,

4,

6,

11} , Debasis Das _{1,

4,

12,

13} , Sk. Manirul Islam _{1,

2,

3,

4}

Affiliation

Silver nanoparticles (AgNPs) embedded in a porous polystyrene material (AgNPs@m-PS-PC) were synthesized via the polymerization of polystyrene amine and 2-pyridinecarbaldehyde, followed by the reduction of silver nitrate in methanol. The structure and morphology of this porous material were characterized by powder X-ray diffraction, transmission electron microscopy (TEM), scanning electron microscopy, Fourier-transform infrared, ultraviolet-visible, and atomic absorption spectroscopies, and thermogravimetric analysis. TEM showed that the AgNPs were well dispersed in the polymeric matrix, with dimensions of around 4–9 nm. This nanocatalyst showed activity, particularly for the green synthesis of valuable carboxylic acids by the carboxylation reaction of terminal alkynes with carbon dioxide under atmospheric pressure. Additionally, the catalyst displayed efficient catalytic activity for the oxidation of cyclohexane using hydrogen peroxide as the oxidising agent. The AgNPs@m-PS-PC nanocatalyst could be recycled five times and retained reliable efficiency.

中文翻译：

由胺官能化的聚合物纳米催化剂包封的AgNP，在环境条件下可固定为羧酸的CO2固定和环己烷的氧化

嵌入在多孔聚苯乙烯材料（AgNPs @ m-PS-PC）中的银纳米颗粒（AgNPs）通过聚苯乙烯胺和2-吡啶甲醛的聚合反应，然后在甲醇中还原硝酸银。该多孔材料的结构和形态通过粉末X射线衍射，透射电子显微镜（TEM），扫描电子显微镜，傅立叶变换红外，紫外可见和原子吸收光谱以及热重分析来表征。TEM显示，AgNPs很好地分散在聚合物基质中，尺寸约为4–9 nm。该纳米催化剂显示出活性，特别是对于通过末端炔与大气压下的二氧化碳的羧化反应绿色合成有价值的羧酸。另外，该催化剂对使用过氧化氢为氧化剂的环己烷的氧化显示出有效的催化活性。AgNPs @ m-PS-PC纳米催化剂可以循环使用五次，并保持可靠的效率。

更新日期：2020-04-06

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11