Zhang Xie, Lv Xucheng, Qian Zikai, Chen Chunhong, Mao Shanjun, Lu Jun, Wang Yong
Advanced Materials and Catalysis Group, Center of Chemistry for Frontier Technologies, State Key Laboratory of Clean Energy Utilization, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310058, PR China.
College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, PR China.
ACS Nano. 2024 Jul 9;18(27):17826-17836. doi: 10.1021/acsnano.4c03744. Epub 2024 Jun 27.
Constructing carbonaceous materials with versatile surface structures still remains a great challenge due to limited self-assembly methods, especially at high temperatures. This study presents an innovative template evolution induced relay self-assembly (TEIRSA) for the fabrication of large polyoxometalate (POM)-mixed carbonaceous nanosheets featuring surface mesoporous structures through hydrothermal carbonization (HTC). The method employs POM and acetone as additives, cleverly modulating the Ostwald ripening-like process of P123-based micelles, effectively addressing the instability challenges inherent in traditional soft-template methods, especially within the demanding carbohydrate HTC process. Additionally, this method allows for the independent regulation of surface architectures through the selection of organic additives. The resulting nanosheets exhibit diverse surface morphologies, including surface spherical mesopores, 1D open channels, and smooth surfaces. Their unexpectedly versatile properties have swiftly garnered recognition, showing potential in the application of lithium-sulfur batteries.
由于自组装方法有限，特别是在高温下，构建具有多功能表面结构的碳质材料仍然是一个巨大的挑战。本研究提出了一种创新的模板演化诱导接力自组装（TEIRSA）方法，用于通过水热碳化（HTC）制备具有表面介孔结构的大型多金属氧酸盐（POM）混合碳质纳米片。该方法采用POM和丙酮作为添加剂，巧妙地调节基于P123的胶束的类奥斯特瓦尔德熟化过程，有效解决了传统软模板方法固有的不稳定性挑战，特别是在要求苛刻的碳水化合物HTC过程中。此外，该方法允许通过选择有机添加剂独立调节表面结构。所得纳米片呈现出多种表面形态，包括表面球形介孔、一维开放通道和平滑表面。它们出人意料的多功能特性迅速得到认可，在锂硫电池应用中显示出潜力。
