氧空位纳米TiO<sub>2</sub>催化合成生物基聚(2,5-呋喃二甲酸乙二醇酯)及其原位闭环回收

李璐; 刘春亮; 周冠男; 宋蕾; 孙云龙; 王瑞; 胡雁鸣

doi:10.11777/j.issn1000-3304.2025.25218

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氧空位纳米TiO₂催化合成生物基聚(2,5-呋喃二甲酸乙二醇酯)及其原位闭环回收

研究论文 | 更新时间：2026-01-16

- 氧空位纳米TiO₂催化合成生物基聚(2,5-呋喃二甲酸乙二醇酯)及其原位闭环回收
- Oxygen-deficient TiO₂ Nanocatalysts for Sustainable Poly(ethylene 2,5-furandicarboxylate) Production and Closed-loop Recycling
- 高分子学报 2026年57卷第1期页码：232-244
- 作者机构：
  
  中国科学院大连化学物理研究所高性能高分子材料研究中心(DNL2200) 大连 116023
- 作者简介：
  
  E-mail: wangrui87@dicp.ac.cn
- 基金信息：
  
  国家重点研发计划项目(2022YFC2105800);国家自然科学基金面上项目(基金号 52473012)
- DOI：10.11777/j.issn1000-3304.2025.25218
  中图分类号：
- CSTR：32057.14.GFZXB.2025.7494
- 收稿：2025-07-25，
  
  录用：2025-09-29，
  
  网络出版：2025-12-29，
  
  纸质出版：2026-01-20
- 稿件说明：
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李璐, 刘春亮, 周冠男, 宋蕾, 孙云龙, 王瑞, 胡雁鸣. 氧空位纳米TiO₂催化合成生物基聚(2,5-呋喃二甲酸乙二醇酯)及其原位闭环回收. 高分子学报, 2026, 57(1), 232-244.

Li, L.; Liu, C. L.; Zhou, G. N.; Song, L.; Sun, Y. L.; Wang, R.; Hu, Y. M. Oxygen-deficient TiO₂ nanocatalysts for sustainable poly(ethylene 2,5-furandicarboxylate) production and closed-loop recycling. Acta Polymerica Sinica (in Chinese), 2026, 57(1), 232-244.
李璐, 刘春亮, 周冠男, 宋蕾, 孙云龙, 王瑞, 胡雁鸣. 氧空位纳米TiO₂催化合成生物基聚(2,5-呋喃二甲酸乙二醇酯)及其原位闭环回收. 高分子学报, 2026, 57(1), 232-244. DOI： 10.11777/j.issn1000-3304.2025.25218. CSTR： 32057.14.GFZXB.2025.7494.

Li, L.; Liu, C. L.; Zhou, G. N.; Song, L.; Sun, Y. L.; Wang, R.; Hu, Y. M. Oxygen-deficient TiO₂ nanocatalysts for sustainable poly(ethylene 2,5-furandicarboxylate) production and closed-loop recycling. Acta Polymerica Sinica (in Chinese), 2026, 57(1), 232-244. DOI： 10.11777/j.issn1000-3304.2025.25218. CSTR： 32057.14.GFZXB.2025.7494.

摘要

在循环材料经济背景下，开发了一系列基于氧空位可调纳米TiO

的高效催化剂，实现生物基聚(2

5-呋喃二甲酸乙二醇酯) (PEF)的绿色合成与原位闭环回收. 通过精准调控TiO

催化剂表面的氧空位密度，显著提升了其对2

5-呋喃二甲酸(FDCA)与乙二醇聚合反应的催化活性，成功制备出高特性黏度的PEF ([

]

= 0.728 dL/g). 该催化体系可创新性地在温和条件下直接驱动PEF解聚，无需额外添加催化剂即可实现完全解聚. 解聚产物可直接用于再聚合，所得再生PEF (rPEF，[

]

=0.864 dL/g)的性能与原始材料相当. “聚合—解聚—再聚合”的全循环工艺突破了传统聚酯回收的能源与成本瓶颈，其核心在于氧空位缺陷对催化活性位点的动态调控机制，为解决生物基聚酯的可持续生产与循环利用难题，提供了一个兼具原子经济性与工艺可行性的有效策略.

Abstract

Under the context of circular material economy

this study developed a series of oxygen vacancy-tunable TiO

-based catalysts to enable green synthesis and in-situ closed-loop recycling of bio-based poly(ethylene 2

5-furandicarboxylate) (PEF). By precisely regulating oxygen vacancy density on TiO

catalyst surfaces

catalytic activity for the polymerization reaction between 2

5-furandicarboxylic acid (FDCA) and ethylene glycol was significantly enhanced

successfully producing high intrinsic viscosity PEF ([

]

=0.728 dL/g). The catalytic system innovatively drove PEF depolymerization under mild conditions without additional catalysts

achieving complete depolymerization. Depolymerized products could be directly repolymerized

yielding recycled PEF (rPEF

[

]

=0.864 dL/g) with performance comparable to virgin material. The full-cycle polymerization-depolymerization-repolymerization process overcame energy and cost barriers in traditional polyester recycling

with its core mechanism lying in dynamic regulation of catalytic active sites by oxygen vacancy defects. This work provides an atomically economical and industrially viable strategy for addressing sustainable production and circular utilization challenges of bio-based polyesters.

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基于化学平衡原理设计热固性聚氨酯弹性体的闭环回收

氧空位纳米TiO2催化合成生物基聚(2,5-呋喃二甲酸乙二醇酯)及其原位闭环回收

Oxygen-deficient TiO2 Nanocatalysts for Sustainable Poly(ethylene 2,5-furandicarboxylate) Production and Closed-loop Recycling

DOI：10.11777/j.issn1000-3304.2025.25218

摘要

Abstract

关键词

Keywords

references

氧空位纳米TiO₂催化合成生物基聚(2,5-呋喃二甲酸乙二醇酯)及其原位闭环回收

Oxygen-deficient TiO₂ Nanocatalysts for Sustainable Poly(ethylene 2,5-furandicarboxylate) Production and Closed-loop Recycling