Green synthesis of ZIF-8 for selective adsorption of dyes in water purification

IF 2.4 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Open Chemistry Pub Date : 2025-01-01 DOI:10.1515/chem-2025-0140

Zhengyao Zhang, Kui Sun, Yuqi Bao, Lei Hong, Jun Yang

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引用次数: 3

Abstract

Abstract This work successfully developed a new green and low-cost preparation method of zeolitic imidazolate framework-8 (ZIF-8) by adding sodium hydroxide as a proton removing agent and surfactant to reduce the amount of 2-methylimidazole and the size of ZIF-8. Using surfactants cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) to modify ZIF-8. The modified ZIF-8 showed selective adsorption behaviors for Rhodamine B (Rh B), methylene blue (MB), methyl orange (MO), and acid yellow 36 (AC36). ZIF-8 modified by SDS was more likely to adsorb MB and Rh B cationic dyes than ZIF-8 modified by CTAB, with removal rates of 85.3 and 90.1%, respectively. The removal rates of anionic MO and AC36 by CTAB-modified ZIF-8 were 98.7 and 80.4%, respectively. Because of the selectivity of modified ZIF-8, it can separate specific dyes from mixed dyes. Fourier transform infrared spectrometry and zeta potential analysis showed that the adsorption of dyes by modified ZIF-8 was carried out by electrostatic interaction, π–π stacking and hydrogen bonding.

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绿色合成ZIF-8对水中染料的选择性吸附

摘要：通过添加氢氧化钠作为质子脱除剂和表面活性剂，减少2-甲基咪唑的用量和ZIF-8的粒径，成功开发了一种绿色低成本的新型分子筛咪唑骨架-8 （ZIF-8）制备方法。采用表面活性剂十六烷基三甲基溴化铵（CTAB）和十二烷基硫酸钠（SDS）对ZIF-8进行改性。改性后的ZIF-8对罗丹明B （Rh B）、亚甲基蓝（MB）、甲基橙（MO）和酸性黄36 （AC36）均有选择性吸附。SDS修饰的ZIF-8对MB和Rh B阳离子染料的吸附效果优于CTAB修饰的ZIF-8，去除率分别为85.3和90.1%。ctab改性ZIF-8对阴离子MO和AC36的去除率分别为98.7%和80.4%。由于改性后的ZIF-8具有选择性，可以从混合染料中分离出特定的染料。傅里叶变换红外光谱和zeta电位分析表明，改性ZIF-8对染料的吸附是通过静电相互作用、π -π堆积和氢键作用进行的。

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

Open Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

3.80

自引率

4.30%

发文量

审稿时长

6 weeks

期刊介绍： Open Chemistry is a peer-reviewed, open access journal that publishes original research, reviews and short communications in the fields of chemistry in an ongoing way. The central goal is to provide a hub for researchers working across all subjects to present their discoveries, and to be a forum for the discussion of the important issues in the field. The journal is the premier source for cutting edge research in fundamental chemistry and it provides high quality peer review services for its authors across the world. Moreover, it allows for libraries everywhere to avoid subscribing to multiple local publications, and to receive instead all the necessary chemistry research from a single source available to the entire scientific community.