铝离子掺杂MIL-101(Cr)的制备及其VOCs吸附性能研究

doi:10.15541/jim20240486

无机材料学报

• 研究论文 •

铝离子掺杂MIL-101(Cr)的制备及其VOCs吸附性能研究

江宗玉¹, 黄红花², 清江³, 王红宁¹, 姚超¹, 陈若愚¹

1.常州大学江苏省精细石化工程重点实验室, 常州 213164;
2.青岛海关技术中心, 青岛 266002;
3.上海海关工业产品与原材料检验检测技术中心, 上海 200135

收稿日期:2024-11-15 修回日期:2025-02-19
通讯作者: 王红宁(1980-),副教授. E-mail：hnwang@cczu.edu.cn
作者简介:江宗玉（2000-）,女,硕士研究生. E-mail：17855227241@163.com
基金资助:
青岛海关技术中心（266002）;国家重点研发计划（2023YFC3306301）

Aluminum Ion Doped MIL-101(Cr): Preparation and VOCs Adsorption Performance

JIANG Zongyu¹, HUANG honghua², Qing jiang³, WANG Hongning¹, Yao chao¹, CHEN Ruoyu¹

1. Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, China;
2. Technology Center of Qingdao Customs, Qingdao 266002, China;
3. Technical Center for Industrial Product and Raw Material Inspection and Testing, Shanghai Customs, Shanghai 200135, China

Received:2024-11-15 Revised:2025-02-19
Contact: WANG Hongning (1980-), associate professor. E-mail：hnwang@cczu.edu.cn
About author:JIANG Zongyu （2000-）, female, Master candidate. E-mail：17855227241@163.com
Supported by:
Technology Center of Qingdao Customs (266002); National Key Research and Development Program of China (2023YFC3306301)

摘要/Abstract

摘要： 挥发性有机化合物（VOCs）危害环境质量和人体健康。为了提高吸附剂对VOCs的吸附性能,基于金属有机框架(MOFs)中金属位点可以取代,采用一步溶剂热法在MIL-101(Cr)合成体系中掺杂丰富、廉价且环保的金属离子Al³⁺, 增加MIL-101(Cr)表面的不饱和金属位点。通过调节Al³⁺掺杂量, 得到一系列Al-MIL-101(Cr)样品。通过不同手段对Al-MIL-101(Cr)样品的形貌和结构进行表征, 并研究其对甲苯、正己烷、油气和对二甲苯的吸附性能。MIL-101的甲苯、正己烷、油气和对二甲苯静态吸附容量分别为0.676、0.621、0.451和0.812 g·g^-1。随着Al³⁺掺杂量的增多, Al-MIL-101(Cr)样品的吸附容量先增加后减小; 当Al³⁺掺杂量达到0.75 mmol时, Al-0.75-MIL-101(Cr)具有最大的吸附容量(0.991 g·g^-1甲苯, 0.755 g·g^-1正己烷, 0.713 g·g^-1油气, 0.875 g·g^-1对二甲苯)。通过单一组分甲苯穿透曲线评估Al-MIL-101(Cr)样品的动态吸附行为,结果表明Al-MIL-101(Cr)具有良好的VOCs去除能力, 这与其较大的比表面积以及增加的不饱和金属位点有关。

关键词: 金属有机框架, 挥发性有机化合物, 铝离子掺杂, 动态吸附, 稳定性

Abstract: Volatile organic compounds (VOCs) pose significant risks to environmental quality and human health. To enhance adsorption performance of adsorbents for VOCs, based on the principle that metal ions can be replaced in metal organic framework (MOFs), improving unsaturated metal centers, a one-step solvothermal method was utilized to dope abundant, cost-effective, and environmentally friendly Al³⁺ ions into MIL-101(Cr) synthesis system for preparing Al-MIL-101(Cr). Various techniques were employed to analyze the morphology and structure of MIL-101(Cr) and Al-MIL-101(Cr) samples, alongside an investigation into the static toluene, hexane, oil and p-xylene adsorption performance. The static toluene, hexane, gasoline and p-xylene adsorption capacities of MIL-101 were 0.676, 0.621, 0.451 and 0.812 g·g^-1, respectively. When Al³⁺ doping amount reached 0.75 mmol, Al-0.75-MIL-101(Cr) demonstrated maximum VOCs adsorption capacities (0.991 g·g^-1 for toluene, 0.755 g·g^-1 for hexane, 0.713 g·g^-1 for oil, and 0.875 g·g^-1for p-xylene). The dynamic toluene adsorption behavior was assessed through single-component breakthrough curves. Both dynamic and static adsorption results confirmed that Al-MIL-101(Cr) possess excellent VOCs removal capabilities, which attributed to the extensive specific surface area and augmented unsaturated metal sites.

Key words: metal organic framework, volatile organic compound, aluminum ion doping, dynamic adsorption, stability

中图分类号:

X511

江宗玉, 黄红花, 清江, 王红宁, 姚超, 陈若愚. 铝离子掺杂MIL-101(Cr)的制备及其VOCs吸附性能研究[J]. 无机材料学报, DOI: 10.15541/jim20240486.

JIANG Zongyu, HUANG honghua, Qing jiang, WANG Hongning, Yao chao, CHEN Ruoyu. Aluminum Ion Doped MIL-101(Cr): Preparation and VOCs Adsorption Performance[J]. Journal of Inorganic Materials, DOI: 10.15541/jim20240486.

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铝离子掺杂MIL-101(Cr)的制备及其VOCs吸附性能研究

Aluminum Ion Doped MIL-101(Cr): Preparation and VOCs Adsorption Performance

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