仿生叶片状二氧化钛/凹凸棒石/木质素复合材料的构建及其抗紫外线性能研究

doi:10.3969/j.issn.2097-2806.2025.08.008

摘要/Abstract

摘要：

全球紫外线辐射量随着臭氧层的破坏而增加，对人类健康造成了潜在危害。无机防晒剂多存在纳米毒性、活性自由基氧化及对生态系统的负面影响。由于天然木质素中存在大量苯环、酮基和酚羟基等官能团，具备能够清除活性自由基、吸收紫外线等优势，因此开发木质素基抗紫外材料具有巨大价值。受植物叶片结构的光保护机制启发，文章采用沉淀法制备了二氧化钛/凹凸棒石（TiO₂/ATP）二元复合材料，然后通过微波水热法得到了二氧化钛/凹凸棒石/脱碱木质素（TiO₂/ATP/DL）纳米复合材料，并将该材料进行抗紫外应用评价。结果表明，TiO₂以针状形态均匀分布在ATP表面，TiO₂的分散性得到提高，DL分子中丰富的酚羟基和芳香环以及羰基形成p-π偶联，使它们能够吸收大量的紫外光，同时与TiO₂/ATP产生相互作用，进一步提高紫外线吸收范围。TiO₂/ATP/DL加入到防晒乳液中，由于ATP的一维结构使乳液结构更加稳定，形成的防晒霜受破坏后恢复速度快，显示了优异的防晒应用效果。

关键词: 木质素, 抗紫外, 仿生, 凹凸棒石, TiO₂

Abstract:

The global ultraviolet radiation increases with the destruction of the ozone layer, causing potential harm to human health. Inorganic sunscreen usually have nanotoxicity, oxidation of active free radicals and negative effects on the ecosystem. Due to a large number of functional groups such as benzene ring, keto and phenol hydroxyl, natural lignin has the advantages of removing active free radicals and absorbing ultraviolet light, therefore the development of lignin-based anti-UV materials is of great importance. Inspired by the light protection mechanism of plant leaf structure, titanium dioxide/attapulgite （TiO₂/ATP） binary composite was prepared by precipitation method, and then TiO₂/ATP/dealkali-lignin （TiO₂/ATP/DL） nanocomposite was obtained by microwave hydrothermal method, and the composite was utilized for anti-UV application. Results show that needle-like TiO₂ is uniformly distributed on the ATP surface, thereby enhancing TiO₂ dispersion, and the abundant phenolic hydroxy in DL molecules and the aromatic rings formed p-π coupling enable them to absorb large amounts of UV light while generating interactions with TiO₂/ATP to further improve the UV absorption range. TiO₂/ATP/DL is added to the sunscreen lotion. The one-dimensional structure of ATP makes the emulsion structure more stable, and the formed sunscreen recovers quickly after damage, showing excellent sunscreen application.

Key words: lignin, UV resistance, biomimetic material, attapulgite, TiO₂

中图分类号:

TB332

张亮, 韦乐研, 李霞章. 仿生叶片状二氧化钛/凹凸棒石/木质素复合材料的构建及其抗紫外线性能研究[J]. 日用化学工业（中英文）, 2025, 55(8): 1017-1023.

Liang Zhang, Leyan Wei, Xiazhang Li. Construction of leaf-like TiO₂/attapulgite/lignin composite for UV protection application[J]. China Surfactant Detergent & Cosmetics, 2025, 55(8): 1017-1023.

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