The sustainable, one-pot and high-yield synthesis of ultrafine carbonaceous nanospheres with high anionic separation efficiency
The sustainable, one-pot and high-yield synthesis of ultrafine carbonaceous nanospheres with high anionic separation efficiency
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DOI：
10.1016/j.apsusc.2021.151249
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发表时间：
2022-01
影响因子：
6.7
通讯作者：
Qiming Zhao;Qiaoyan Zhang;Yan Zhu;Lupin Qin
中科院分区：
文献类型：
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作者：
Qiming Zhao;Qiaoyan Zhang;Yan Zhu;Lupin Qin
超细碳纳米球（UCNSs）具有独特的可调尺寸特性（小于100 nm），在现代技术中具有上级应用前景。然而，大量制造单分散UCNSs仍然具有挑战性，特别是通过可持续的方式。本文采用一锅法高浓度水热碳化葡萄糖，在聚季铵盐-11的辅助下制备了粒径在51-100 nm之间的单分散UCNSs。当葡萄糖浓度为500 g L-1时，UCNSs的单分散性可达到38.1 g，放大5倍后的HTCs也可达到单分散性。进一步设计了一种新的绿色策略，该策略基于半胱氨酸在水溶液体系中的硫醇-烯点击化学，用于超支化聚季胺接枝UCNSs，而不会对其单分散性造成可忽略的损害。接枝的UCNSs作为胶乳应用于离子色谱填料中，与报道的或常见的商业胶乳附聚的对应物相比，显示出对常见阴离子的高分离效率，具有更好的峰对称性。
The unique and tunable size-dependent properties (less than 100 nm) make ultrafine carbonaceous nanospheres (UCNSs) superior and promising in plentiful modern technological applications. However, fabricating monodiperse UCNSs in quantity was still challenging, especially via a sustainable way. This article presents a one-pot high-concentration hydrothermal carbonization (HTC) of glucose under the aid of polyquaternium-11 to fabricate monodisperse UCNSs with controllable sizes of 51–100 nm. The monodispersity of UCNSs can even be achieved at glucose concentration of 500 g L-1and in 5-fold enlarged HTCs, with output up to 38.1 g. A novel green strategy based on the thiol-ene click chemistry with cysteine in aqueous system were further designed for the hyperbranched polyquaternary amine grafting of UCNSs without negligible damage on their monodispersity. Grafted UCNSs were applied as latices in ion chromatography packing, showing high separation efficiencies for common anions with better peak symmetry compared with reported or common commercial latex-agglomerated counterparts to the best of our knowledge.