Matsudo Arthur, Oliveira Larissa V F, Martins Tereza S, Camilo Fernanda F
Chemistry Department, Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Diadema SP-09913-030, Brazil.
Center of Natural Sciences and Humanities, Federal University of ABC, Santo Andre SP-09210-580, Brazil.
ACS Omega. 2024 Oct 15;9(43):43395-43405. doi: 10.1021/acsomega.4c04017. eCollection 2024 Oct 29.
This study focuses on comparing the efficiency of commercially available TiO (P25) with synthesized TiO nanoparticles (TiONP) impregnated in nonmodified cellulose membranes, specifically targeting the degradation of Indigo Carmine (IC) dye. We developed a novel method to enhance the interaction between cellulose and TiO, thereby improving efficiency and reusability. This involves dissolving microcrystalline cellulose in 1-butyl-3-methylimidazolium chloride (BMImCl) and dispersing the TiO samples within this solution. The resulting cellulose membrane embedded with TiO nanoparticles (TiONP) exhibited a higher adsorption capacity and greater photocatalytic efficiency against IC compared to that of P25. This improvement is attributed to the larger surface area and increased reactivity of the synthesized TiONPs. Furthermore, the CEL_TiONP membranes demonstrated excellent stability and reusability, maintaining their catalytic efficiency over multiple cycles. This study presents new opportunities for developing efficient, reusable photocatalytic materials for environmental remediation using eco-friendly cellulose.
本研究着重比较市售二氧化钛（P25）与负载于未改性纤维素膜中的合成二氧化钛纳米颗粒（TiONP）的效率，特别针对靛蓝胭脂红（IC）染料的降解。我们开发了一种新方法来增强纤维素与二氧化钛之间的相互作用，从而提高效率和可重复使用性。这包括将微晶纤维素溶解于1-丁基-3-甲基咪唑氯盐（BMImCl）中，并将二氧化钛样品分散在该溶液中。与P25相比，负载有二氧化钛纳米颗粒（TiONP）的所得纤维素膜对IC表现出更高的吸附容量和更大的光催化效率。这种改进归因于合成的TiONP更大的表面积和更高的反应活性。此外，CEL_TiONP膜表现出优异的稳定性和可重复使用性，在多个循环中保持其催化效率。本研究为使用环保型纤维素开发用于环境修复的高效、可重复使用的光催化材料提供了新机遇。
