Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing100084, China.
ACS Nano. 2023 Feb 14;17(3):2893-2900. doi: 10.1021/acsnano.2c11296. Epub 2023 Jan 30.
The coloration of carbon nanotube (CNT) fibers (CNTFs) is a long-lasting challenge because of the intrinsic black color and chemically inert surfaces of CNTs, which cannot satisfy the aesthetic and fashion requirements and thus significantly restrict their performance in many cutting-edge fields. Recently, a structural coloration method of CNTFs was developed by our group using atomic layer deposition (ALD) technology. However, the ALD-based structural coloration method of CNTFs is expensive, time-consuming, and not suitable for the large-scale production of colorful CNTFs. Herein, we developed a very simple and scalable liquid-phase method to realize the structural coloration of CNTFs. A SiO/ethanol dispersion containing SiO nanospheres with controllable sizes was synthesized. The SiO nanospheres could self-assemble into photonic crystal layers on the surface of CNTFs and exhibited brilliant colors. The colors of SiO nanoparticle-coated CNTFs could be easily changed by tuning the sizes of SiO nanospheres. This method provides a simple, effective, and promising way for the large-scale production of colorful CNTFs.
碳纳米管纤维（CNTFs）的着色是一个长期存在的挑战，因为 CNT 的固有黑色和化学惰性表面，无法满足美观和时尚的要求，从而极大地限制了它们在许多前沿领域的性能。最近，我们小组使用原子层沉积（ALD）技术开发了一种 CNTFs 的结构着色方法。然而，基于 ALD 的 CNTFs 结构着色方法昂贵、耗时，并且不适合大规模生产彩色 CNTFs。在此，我们开发了一种非常简单且可扩展的液相方法来实现 CNTFs 的结构着色。合成了含有具有可控尺寸的 SiO 纳米球的 SiO/乙醇分散体。SiO 纳米球可以在 CNTFs 表面自组装成光子晶体层，并呈现出绚丽的色彩。通过调整 SiO 纳米球的尺寸，可以轻松改变涂覆有 SiO 纳米颗粒的 CNTFs 的颜色。该方法为大规模生产彩色 CNTFs 提供了一种简单、有效、有前途的途径。
