Structure control and adsorption behavior of novel hierarchical porous polymer

CAI Lifeng; ZHAN Jieming; LIANG Jie; YANG Lei; ZHENG Bingna

doi:10.13471/j.cnki.acta.snus.2022C009

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Structure control and adsorption behavior of novel hierarchical porous polymer

Research articles | 更新时间：2023-11-01

- Structure control and adsorption behavior of novel hierarchical porous polymer
- Acta Scientiarum Naturalium Universitatis Sunyatseni Vol. 62, Issue 1, Pages: 161-168(2023)
- 作者机构：
  
  1.福建省新型污染物生态毒理效应与控制重点实验室 / 莆田学院环境与生物工程学院，福建莆田351100
  2.聚合物复合材料及功能材料教育部重点实验室 / 中山大学化学学院，广东广州 510006
- 作者简介：
- 基金信息：
- DOI：10.13471/j.cnki.acta.snus.2022C009
  CLC： TQ427.2⁺6
- Published：25 January 2023，
  
  Published Online：19 September 2022，
  
  Received：20 April 2022，
  
  Accepted：30 May 2022
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蔡力锋,詹杰茗,梁杰等.新型层次孔聚合物的结构调控及吸附行为[J].中山大学学报(自然科学版),2023,62(01):161-168.

CAI Lifeng,ZHAN Jieming,LIANG Jie,et al.Structure control and adsorption behavior of novel hierarchical porous polymer[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2023,62(01):161-168.
蔡力锋,詹杰茗,梁杰等.新型层次孔聚合物的结构调控及吸附行为[J].中山大学学报(自然科学版),2023,62(01):161-168. DOI： 10.13471/j.cnki.acta.snus.2022C009.

CAI Lifeng,ZHAN Jieming,LIANG Jie,et al.Structure control and adsorption behavior of novel hierarchical porous polymer[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2023,62(01):161-168. DOI： 10.13471/j.cnki.acta.snus.2022C009.

摘要

在成功制备新型层次孔聚合物（nHPP）的基础上，表征了nHPP的微纳结构，详细研究了傅克超交联条件对其孔隙结构的影响，并进一步考察了nHPP对水中有机小分子染料的吸附性能。实验结果表明，nHPP呈现由中空聚合物纳米球相互堆叠构成的三维纳米网络结构，其中空聚合物纳米球粒径约为154 nm，壳层聚合物厚度约为7 nm；聚合物骨架含大量微孔结构，聚合物纳米球相互堆砌及其中空腔体共同形成了中/大孔结构，从而显现出典型的层次孔结构。nHPP的BET（Brunauer-Emmett-Teller）比表面积、微孔比表面积、总孔容和微孔孔容等孔结构参数可通过超交联反应温度和催化剂添加量进行调控。nHPP丰富的层次化孔隙结构赋予其稳定、高效、环保的良好性能，表现为对水中刚果红（CR， Congo red）良好的吸附效果，且吸附过程初期主要由CR在吸附剂外部液膜中的扩散控制，后期主要由CR在吸附剂内部层次孔道中的扩散控制。

Abstract

Based on the successful synthesis of novel hierarchical porous polymer （nHPP）， the micro-， nano-structure of nHPP was characterized， the effect of Friedel-Crafts crosslinking conditions on the porous structure was studied in detail， and the liquid phase adsorption performance of nHPP toward organic dye molecules in water was further investigated. The experimental results showed that nHPP presented a three-dimensional nano-network structure composed of hollow polymeric nanospheres stacked with each other， with a size of 154 nm for the hollow polymeric nanosphere network unit， and a shell thickness of about 7 nm. The polymer skeleton contains a large number of micropores， and the meso/macro pore structure derives from the stacking of polymeric nanospheres and the template cavities， thus forming a porous structure with hierarchical distribution of micro-， meso- and macropores. By controlling the reaction conditions， the BET（Brunauer-Emmett-Teller） specific surface area， microporous specific surface area， total pore volume and microporous pore volume can be well adjusted. The abundant and hierarchical porous structure of nHPP facilitates decent adsorption performance toward Congo red in water. The initial stage of the adsorption process is mainly controlled by the diffusion of Congo red in the external liquid film of the adsorbent， and the later stage is mainly controlled by the diffusion of Congo red in the particles in the internal pores of the adsorbent.

关键词

新型层次孔聚合物傅克超交联结构调控液相吸附

Keywords

novel hierarchical porous polymerFriedel-Crafts crosslinkingstructural controlliquid-phase adsorption

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Lifeng CAI

Jieming ZHAN

Jie LIANG

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Bingna ZHENG

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