纤维素基有机-无机纳米光催化复合材料制备及其水处理应用的研究进展

Recent progress in preparation of cellulose-based organic-inorganic photocatalysts nanohybrids and it′s application in water treatment

为改善传统纳米粉体光催化剂易团聚导致催化活性降低,且难以重复利用等问题,针对性地开发具有高活性位点暴露、高分散性和稳定性的纤维素基光催化复合材料是推动光催化技术产业化应用的有效途径。综述了国内外纤维素基有机-无机纳米光催化复合材料的研究进展。首先从纤维素的不同制备形态角度出发,分析了纳米纤维素、纤维素膜材料、纤维素气凝胶材料与纳米光催化材料的设计合成与制备机制,重点阐述了其在环境领域的最新应用进展,最后提出纤维素基光催化材料的发展前景以及存在的问题与局限性,为纤维素基功能材料今后的规模化制备和在环境修复材料领域的广泛应用提供参考。

With the aim of solving the agglomeration of traditional nano-sized photocatalysts particles that leads to low catalytic activity and recycling difficulty,it is imperative to promote the scalable application of advanced photocatalytic technology using cellulose based hybrid photocatalysts with high active site exposure,high dispersion and long-term stability.This review summarizes the recent progress in worldwide research on cellulose-based organic-inorganic photocatalysts nanohybrids.In terms of different cellulose forms,the fabrication and preparation principle of nanocellulose,cellulose-based membrane,cellulose-based aerogel and their application in the fields of water treatment are discussed.The prospect of cellulose based photocatalytic materials and the existing scientific questions and limitations are proposed.It is anticipated that this review can be used as a reference for preparation and industrialization of cellulose-based functional materials,especially in areas of environmental remediation.