Revolutionizing dye adsorption: amino functionalized Zeolitic Imidazole Framework-8 for effective methyl blue removal

IF 3 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
D. N. Awang Chee, N. A. Kamaludin, M. S. Soffian, F. Z. Abdul Halim, M. A. Mohamed Amin
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引用次数: 0

Abstract

The discharge of untreated wastewater containing synthetic dyes from the industry significantly pollutes water sources. Metal–Organic Frameworks especially Zeolitic Imidazolate Framework-8 have emerged as promising materials in dye wastewater treatment, offering innovative potential for mitigating this pollution. In this research study, the amino-functionalized Zeolitic Imidazole Framework-8 was synthesized and characterized using Field-Emission Scanning Electron Microscopy, Energy Dispersive X-ray Spectroscopy, Fourier Transform Infrared Spectroscopy, X-ray Diffraction, X-ray Photoelectron Spectroscopy and Brunauer–Emmett–Teller. The suitability of amino-functionalized Zeolitic Imidazole Framework-8 for dye removal was determined via a batch adsorption study, and the effects of several adsorption factors were investigated, including the initial concentration of methyl blue (40–200 ppm) the effect of pH condition (pH 3–11), and reaction time (30–180 min). Several kinetic isotherm models, including Langmuir, Freundlich, Pseudo First Order, and Pseudo Second Order, were applied to ascertain the adsorption mechanism. From the results obtained, the adsorption capacity of amino-functionalized Zeolitic Imidazole Framework-8 recorded is 537.4 mg/g. The adsorption isotherm is well-suited to the Freundlich model (R2 = 0.9453) and the kinetic of adsorption is most fitted with Pseudo-second order (R2 = 0.9999). Thus, these results suggest that amino-functionalized Zeolitic Imidazole Framework-8 is a highly efficient adsorbent for methyl blue, operating predominantly through multilayer adsorption and chemisorption. For future research, it is recommended to study the selectivity of amino-functionalized Zeolitic Imidazole Framework-8 for various dyes and contaminants, as well as to evaluate its performance in real wastewater samples to assess its practical applicability in complex matrices.

Graphical Abstract

Abstract Image

革命性的染料吸附:氨基功能化的沸石咪唑框架-8有效的甲基蓝去除
工业排放的含有合成染料的未经处理的废水严重污染了水源。金属-有机框架特别是咪唑酸分子筛框架-8已成为染料废水处理中有前途的材料,为减轻这种污染提供了创新潜力。本研究合成了氨基功能化的沸石咪唑骨架-8,并采用场发射扫描电镜、能量色散x射线能谱、傅里叶变换红外光谱、x射线衍射、x射线光电子能谱和布鲁诺尔-埃米特-泰勒等方法对其进行了表征。通过批量吸附研究确定了氨基功能化沸石咪唑骨架-8对染料去除的适宜性,并考察了甲基蓝初始浓度(40-200 ppm)、pH条件(pH 3-11)、反应时间(30-180 min)等因素对其吸附效果的影响。采用Langmuir、Freundlich、拟一级和拟二级等温线模型对吸附机理进行了研究。结果表明,氨基功能化沸石咪唑骨架-8吸附量为537.4 mg/g。吸附等温线符合Freundlich模型(R2 = 0.9453),吸附动力学最符合拟二级模型(R2 = 0.9999)。因此,这些结果表明,氨基功能化的沸石咪唑框架-8是一种高效的甲基蓝吸附剂,主要通过多层吸附和化学吸附起作用。未来的研究建议进一步研究氨基功能化沸石咪唑框架-8对各种染料和污染物的选择性,并在实际废水样品中评价其性能,以评估其在复杂基质中的实际适用性。图形抽象
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来源期刊
CiteScore
5.60
自引率
6.50%
发文量
806
审稿时长
10.8 months
期刊介绍: International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.
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