论文部分内容阅读
以丁二酸为交联剂，采用纳米TiO2和多壁碳管对棉织物进行改性。通过暴露于紫外和阳光照射，分析Direct Green 6浓度的减少来评价改性织物的光催化自洁性能。探讨样品的紫外吸收、耐磨性与扩张强度。结果表明，在紫外和阳光照射下，经纳米TiO2和多壁碳管处理后的棉织物能有效提高Direct Green 6的光降解效率。改性织物的耐麿性和抗紫外性能提高，抗张强度略降低。 Direct Green 6光降解效率的提高归因于电子空穴对重组的减少及由TiO2和多壁碳管产生协同作用而使吸收光的增加。“,”Cotton fabrics were treated with nano titanium dioxide and multi-wall carbon nanotubes ( MWCNTs ) using succinic acid as a crosslinking agent. The photocatalytic self-cleaning properties of the samples were assessed by analyzing the degradation of Direct Green 6 under UV and sunlight. The UV absorption, abrasion resistance and tensile strength of the treated fabric were meas-ured. It was found that coating the cotton fabrics with both MWCNTs and nano titanium dioxide effectively improves the photodeg-radation efficiency of Direct Green 6 under both UV and sunlight. The abrasion resistance and UV blocking capability are improved, and tensile strength decreases a little after the coating. The increased photodegradation of Direct Green 6 can be ascribed to enhanced adsorption, a reduced electron-hole pair recombination rate and an extended light absorption wavelength as a result of the joint action of nano titanium dioxide and MWCNTs.