High-intensive aerogels constructed through in-situ growth of ZIF-8-NH2 on wood for efficient formaldehyde absorption

IF 5.6 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Industrial Crops and Products Pub Date : 2024-11-13 DOI:10.1016/j.indcrop.2024.120040

Wenfan Yu , Zhenxuan Liang , Shaoyu Luo , Qian Yan , Yi Sun , Yisheng Zhu , Shifeng Zhang

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引用次数: 0

Abstract

Metal-organic frameworks (MOFs) are highly advantageous due to their tunable pore size, exceptional thermal and chemical stability, and high specific surface area, making them ideal for applications in formaldehyde adsorption. However, the practical use of powdered MOFs is significantly hindered by their recycling challenges. In this research, wood-based composite aerogels (WAZN-X) were successfully prepared through loading Zeolitic Imidazolate Framework-8-NH₂ (ZIF-8-NH₂) inside wood aerogels. Ascribing to the elimination of lignin and hemicellulose, the enlarged pore structures of wood aerogels and the potential interactions (e.g., hydrogen bonding and electrostatic attractions) between components promoted the uniformly depositing of ZIF-8-NH₂ nanocrystals. The WAZN-X aerogels displayed excellent mechanical strength (e.g., the longitudinal Young’s modulus of 68.57 MPa) and promising formaldehyde adsorption performance (e.g., a stable formaldehyde removal rate of 98.11 %), and kept commendable reusability (95.98 % after 5 cycles). This research provides a new insight for developing high-value functional composite adsorbents for efficient formaldehyde purification.

查看原文本刊更多论文

通过在木材上原位生长 ZIF-8-NH2 构建高强度气凝胶，实现高效甲醛吸收

金属有机框架（MOFs）具有可调节的孔径、优异的热稳定性和化学稳定性以及高比表面积等优点，因此非常适合应用于甲醛吸附。然而，粉末状 MOFs 的实际应用却因其回收难题而受到严重阻碍。本研究通过在木材气凝胶中添加沸石咪唑啉框架-8-NH2（ZIF-8-NH2），成功制备了木基复合气凝胶（WAZN-X）。由于消除了木质素和半纤维素，木材气凝胶的孔隙结构增大，各组分之间的潜在相互作用（如氢键和静电吸引）促进了 ZIF-8-NH2 纳米晶体的均匀沉积。WAZN-X 气凝胶显示出优异的机械强度（例如纵向杨氏模量为 68.57 兆帕）和良好的甲醛吸附性能（例如甲醛去除率稳定在 98.11 %），并保持了值得称赞的可重复使用性（5 次循环后为 95.98 %）。这项研究为开发高效净化甲醛的高价值功能复合吸附剂提供了新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Industrial Crops and Products 农林科学-农业工程

CiteScore

9.50

自引率

8.50%

发文量

1518

审稿时长

43 days

期刊介绍： Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.