Thiophene-based porous organic networks for volatile iodine capture and effectively detection of mercury ion.

Thiophene-based porous organic networks for volatile iodine capture and effectively detection of mercury ion.
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基于噻吩的多孔有机网络用于捕获挥发性碘并有效检测汞离子

DOI:
10.1038/s41598-018-32360-y
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发表时间:
2018-09-19
期刊:
影响因子:
4.6
通讯作者:
Xu Y
Xu Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Liu M;Yao C;Liu C;Xu Y

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通过均相偶联聚合反应,合成了一系列含噻吩结构的共轭微孔聚合物(SCMP-COOH@1-3)。然后在没有任何模板剂的情况下直接热解SCMP-COOH@1-3以合成多孔碳网络,命名为SCMP-600@1、2和3。SCMP-600@1-3具有362-642 m2 g−1的中等BET表面积,具有永久性多孔结构,骨架中有大量的硫和氧单元作为有效的吸附位点,并显示出对碘蒸气的高吸收性能,吸收率高达204 wt.%。此外,SCMP-COOH@1-3聚合物可用于有效检测乙醇-水溶液中的汞离子。有趣的是,在相同浓度Hg 2+条件下,多孔材料对Hg 2+的检测能力随孔容和比表面积的增大而增大。
A series of conjugated microporous polymers containing thiophene-moieties (SCMP-COOH@1-3) was obtained by a homo-coupling polymerization reaction. Then the SCMP-COOH@1-3 were directly pyrolyzed without any templates to synthesize the porous carbon networks, named as SCMP-600@1, 2 and 3. SCMP-600@1-3 possess moderate BET surface area of 362–642 m2 g−1, have a permanent porous structure and plenty of sulfur and oxygen units in the skeletons as effective sorption sites, and display a high absorption performance for iodine vapour with an uptake up to 204 wt.%. In addition, SCMP-COOH@1-3 polymers can be used to effectively detect mercury ion from ethanol-water solution. Interestingly, under the same concentration of Hg2+ conditions, the detection ability of mercury ion of porous materials increased with the increase of the pore volumes and the specific surface.
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