近日，中山大学张杰鹏团队报道了碱性苯甲酸铝具有低成本、多孔性和超疏水性。这一研究成果于2025年12月16日发表在《美国化学会志》上。

超疏水材料具有巨大的应用前景，但其制备通常需要使用较为昂贵的试剂或复杂的处理工艺。研究组报道了一种结构简单的铝基配位聚合物[Al(OH)(ba)₂]（命名为MCF-66，Hba=苯甲酸），该材料可利用多种低成本原料便捷合成。例如，仅通过苯甲酸与氢氧化铝（原料成本约1美元/千克）之间的简单酸碱反应，无需任何溶剂或添加剂，即可实现产率接近100%的合成，且反应副产物仅为水。

MCF-66由排列松散的蝶形链构成，疏水性苯环暴露于晶体表面，从而赋予材料超疏水性。其压片样品显示出高达152°的水接触角，证实了该材料的超疏水特性。尽管链间形成的离散孔道尺寸仅略大于氢气分子，但其结构可通过形变吸附多种小分子，并在正丁烷/异丁烷混合气中表现出特殊的分离性能。此外，MCF-66可直接在铝网表面原位生长，用于构建高效油水分离膜（通量达8.8×10³ L·m^-2·h^-1·bar^-1）。

附：英文原文

Title: Basic Aluminum Benzoate is Low-Cost, Porous, and Superhydrophobic

Author: Zhi-Shuo Wang, Mu-Yang Zhou, Ding-Yi Hu, Xiao-Xian Chen, Jun-Xian Chen, Xue-Wen Zhang, Dong-Dong Zhou, Jie-Peng Zhang, Xiao-Ming Chen

Issue&Volume: December 16, 2025

Abstract: Superhydrophobic materials are of tremendous application prospects, but they typically need to be prepared by relatively expensive reagents or complex treatments. Here, we report a simple aluminum-based coordination polymer [Al(OH)(ba)2] (MCF-66, Hba = benzoic acid), which can be facilely synthesized by various low-cost raw materials. For example, based on the simple acid–base reaction between Hba and Al(OH)3 (raw material costs ～ 1 USD kg–1), MCF-66 can be synthesized in ca. 100% yield without using any solvent or additive, with water as the sole byproduct. MCF-66 consists of insufficiently packed butterfly-like chains, with hydrophobic phenyl rings exposed on the crystal surfaces, enabling superhydrophobicity. The compressed pellet showed a high water contact angle of 152°, which identified MCF-66 as a rare superhydrophobic material. Although the small discrete pores formed between the chains are just slightly larger than H2, it can deform to adsorb various small molecules and show special separation behavior for the n-C4H10/i-C4H10 mixture. MCF-66 can also be directly grown on aluminum meshes for highly efficient oil–water separation (8.8 × 103 L m–2 h–1 bar–1).

DOI: 10.1021/jacs.5c12200

Source: https://pubs.acs.org/doi/abs/10.1021/jacs.5c12200