Fibre and Polymer Technology, KTH Royal Institute of Technology, SE 100 44 Stockholm, Sweden.
ACS Nano. 2023 Apr 25;17(8):7093-7108. doi: 10.1021/acsnano.3c00436. Epub 2023 Apr 4.
The production and engineering of sustainable materials through green chemistry will have a major role in our mission of transitioning to a more sustainable society. Here, combined catalysis, which is the integration of two or more catalytic cycles or activation modes, provides innovative chemical reactions and material properties efficiently, whereas the single catalytic cycle or activation mode alone fails in promoting a successful reaction. Polyphenolic lignin with its distinctive structural functions acts as an important template to create materials with versatile properties, such as being tough, antimicrobial, self-healing, adhesive, and environmentally adaptable. Sustainable lignin-based materials are generated by merging the catalytic cycle of the quinone-catechol redox reaction with free radical polymerization or oxidative decarboxylation reaction, which explores a wide range of metallic nanoparticles and metal ions as the catalysts. In this review, we present the recent work on engineering lignin-based multifunctional materials devised through combined catalysis. Despite the fruitful employment of this concept to material design and the fact that engineering has provided multifaceted materials able to solve a broad spectrum of challenges, we envision further exploration and expansion of this important concept in material science beyond the catalytic processes mentioned above. This could be accomplished by taking inspiration from organic synthesis where this concept has been successfully developed and implemented.
通过绿色化学生产和工程可持续材料将在我们向更可持续社会转型的使命中发挥重要作用。在这里，组合催化（combined catalysis），即将两个或多个催化循环或激活模式集成，提供了高效的创新化学反应和材料特性，而单一催化循环或激活模式本身无法促进成功的反应。具有独特结构功能的多酚木质素作为一种重要的模板，用于创造具有多种特性的材料，例如坚韧、抗菌、自修复、粘合和环境适应性。可持续木质素基材料是通过将醌-儿茶酚氧化还原反应的催化循环与自由基聚合或氧化脱羧反应合并生成的，该反应探索了广泛的金属纳米粒子和金属离子作为催化剂。在这篇综述中，我们介绍了最近通过组合催化设计基于木质素的多功能材料的工作。尽管该概念在材料设计中的应用硕果累累，并且工程学已经提供了多方面的材料，能够解决广泛的挑战，但我们设想在材料科学中进一步探索和扩展这个重要概念，超越上述催化过程。这可以通过从有机合成中汲取灵感来实现，该概念在有机合成中已经成功发展和实施。
