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알렉스,박주현,이다빈,팜티투이동,전예지,신용훈,임기환 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
Dyestuff contaminants disposed from various industrial effluent significantly affect both aquatic and terrestrial ecosystem. It is urgently required to develop effective adsorbent to remove dye pollutants from aqueous solution. Many organic, inorganic, and hybrid materials are being researched aiming to discover effective adsorbent. Metal-organic framework (MOF) are famous for their tailorable morphology and structural texture. In our work Co-MOF were synthesized hydrothermally and utilized for methylene blue (MB) adsorption. The strong adsorbent-adsorbate interaction stemmed from surface charge difference plays critical role for significant improvement of adsorption capacity. The Co-MOF matrix shows resilience for different temperature, pH, and initial MB concentration with great recoverability.
알렉스,박주현 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.104 No.-
Dyestuff in industrial wastewater continues to entail environmental pollution and thus developing anadsorbent with superior adsorption performance is urgently required for the survival of future generations. In this work, a novel Co– and H4dbp based metal-organic framework (MOF, denoted as Co-MOF)adsorbent was developed for the removal of methylene blue (MB) from aqueous solution. Hydrothermal synthesis was employed for the fabrication of the Co-MOF with phosphonic acid organicligand. X-ray diffraction, Fourier-transform infrared spectroscopy, field emission-scanning electronmicroscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, X-ray photoelectronspectroscopy, and N2 adsorption-desorption isothermal analysis were utilized for Co-MOF characterization. MB adsorption by as-prepared adsorbent obeys pseudo-second-order adsorption kinetics andfollows Langmuir isotherm model with the maximum adsorption capacity of 147.99 mg g 1, which issuperior to other analogies. Furthermore, the recoverability of this adsorbent material was astonishingwith an excellent MB removal capacity of 89.34 % of initial dye concentration after the fifth cycle. Thethermodynamic parameters affirm that this adsorption process exhibits a spontaneous endothermic processwith sufficient molecular randomness due to the adsorbent-adsorbate interaction suggesting a greatpotentiality as an adsorbent to be used for industrial wastewater treatment to mitigate the environment.
Efficient Co-Based Metal-Organic Framework (MOF) for Methylene Blue (MB) Dye Adsorption
알렉스,박주현 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.1
The accumulation of dye pollutants on the aquatic bodies affect both aquatic and terrestrial ecosystems. These contaminants mainly sourced from textile and paper factories. Methylene blue (MB) is one of the common cationic organic dyes, which greatly accounts for major industrial wastewater toxin. By fare physical adsorption of MB from industrial effluent is efficient method. Metal-organic frameworks (MOFs) are proven to be best adsorbent candidates for organic dye. In this work, a Co-based MOF were prepared hydrothermally, and various techniques were used for structural crystallinity characterization along with identification moiety. The as-synthesized MOF were utilized as an adsorbent for MB, and the result affirms this material owns excellent adsorption and recyclability performance.