Multiscale Porous Carbon Materials by In Situ Growth of Metal-Organic Framework in the Micro-Channel of Delignified Wood for High-Performance Water Purification

Overview

Journal Nanomaterials (Basel)

Date 2023 Oct 14

PMID 37836336

Authors

Youngho Jeon

Dabum Kim

Suji Lee

Kangyun Lee

Youngsang Ko

Goomin Kwon

Jisoo Park

Ung-Jin Kim

Sung Yeon Hwang

Jeonghun Kim

Jungmok You

Affiliations

Soon will be listed here.

Abstract

Porous carbon materials are suitable as highly efficient adsorbents for the treatment of organic pollutants in wastewater. In this study, we developed multiscale porous and heteroatom (O, N)-doped activated carbon aerogels (CAs) based on mesoporous zeolitic imidazolate framework-8 (ZIF-8) nanocrystals and wood using 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) oxidation, in situ synthesis, and carbonization/activation. The surface carboxyl groups in a TEMPO-oxidized wood (TW) can provide considerably large nucleation sites for ZIF-8. Consequently, ZIF-8, with excellent porosity, was successfully loaded into the TW via in situ growth to enhance the specific surface area and enable heteroatom doping. Thereafter, the ZIF-8-loaded TW was subjected to a direct carbonization/activation process, and the obtained activated CA, denoted as ZIF-8/TW-CA, exhibited a highly interconnected porous structure containing multiscale (micro, meso, and macro) pores. Additionally, the resultant ZIF-8/TW-CA exhibited a low density, high specific surface area, and excellent organic dye adsorption capacity of 56.0 mg cm, 785.8 m g, and 169.4 mg g, respectively. Given its sustainable, scalable, and low-cost wood platform, the proposed high-performance CA is expected to enable the substantial expansion of strategies for environmental protection, energy storage, and catalysis.

Citing Articles

Research on the Migration and Adsorption Mechanism Applied to Microplastics in Porous Media: A Review.

Zeng L, Yuan C, Xiang T, Guan X, Dai L, Xu D Nanomaterials (Basel). 2024; 14(12).

PMID: 38921936 PMC: 11206983. DOI: 10.3390/nano14121060.

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