光催化复合纤维及光催化纸的研制

Preparation and Properties Study of Photocatalytic Composite Fiber and Photocatalytic Paper

关键词:  光催化剂  纤维素  静电纺丝  复合纤维  光催化纸

Key Words:photocatalyst  cellulose  electrospinning  composite fiber  photocatalytic paper

摘要:以尿素为N源对TiO₂进行掺杂改性制备N掺杂TiO₂光催化剂（N-TiO₂），将N-TiO₂与纤维素溶液混合，然后经静电纺丝制备光催化复合纤维，最后将光催化复合纤维与纸浆纤维配抄，制备光催化纸，用于降解甲醛。结果表明，所制备光催化剂N-TiO₂颗粒小、分散均匀，易与纤维素溶液纺丝成光催化复合纤维；所抄造光催化纸对甲醛的降解率达53.8%，抗张指数大于41.9 N·m/g，耐破指数大于2.03 kPa·m²/g，具有良好的强度性能。

Abstract:With urea as the N source， the N-TiO₂ was prepared by doping and modifying TiO₂. Firstly， cellulose solution and N-TiO₂ were mixed， and then the photocatalytic composite fibers were prepared by electrospinning. Finally， the photocatalytic composite fibers were mixed with pulp fibers to prepare photocatalytic paper for degrading formaldehyde. The results showed that the prepared photocatalyst N-TiO₂ had small particles， could be uniformly dispersed in pulp fibers， and easily spun into photocatalytic composite fibers with cellulose solution. The prepared photocatalytic paper had the degradation rate for formaldehyde of 53.8%， the tensile index >41.9 N·m/g and burst index >2.03 kPa·m²/g， with good strength properties.