Sustainable Au (III) adsorption using greenly Fe-BTC/PpPDA synthesized composite: kinetic and isothermal studies.

IF 3 3区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Royal Society Open Science Pub Date : 2026-09-09 DOI:10.1098/rsos.251604

Woulou Somda, Francis O Konate, Konan R Koffi, Gerard Y Sanou, Rafiatou Lingane, Isaï N Bombiri, Mohamed Khalid, Arsène H Yonli

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Abstract

A novel porous composite material, Fe-BTC/PpPDA, was synthesized via a green solvothermal route by integrating polyparaphenylenediamine (PpPDA) into the Fe-BTC metal-organic framework. The material was characterized by X-ray diffraction, FTIR, ultraviolet-visible and scanning electron microscopy/energy-dispersive X-ray spectroscopy analyses, confirming successful incorporation of nitrogen-rich PpPDA into the metal organic frameworks structure. The composite exhibited a well-developed porous morphology and abundant functional groups favourable for metal binding. Batch adsorption experiments demonstrated a high gold uptake capacity (q _max = 1045.8 mg g^-1) with rapid kinetics, reaching equilibrium within 30 minutes. The adsorption behaviour followed the Langmuir model (R² = 0.9847), indicating monolayer adsorption and high selectivity. These findings position Fe-BTC/PpPDA as an efficient, sustainable and selective adsorbent for gold recovery from polymetallic aqueous solutions.

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绿色Fe-BTC/PpPDA复合材料对Au （III）的可持续吸附：动力学和等温研究

将聚对苯二胺（PpPDA）整合到Fe-BTC金属有机骨架中，采用绿色溶剂热方法合成了Fe-BTC/PpPDA多孔复合材料。通过x射线衍射、FTIR、紫外可见和扫描电镜/能量色散x射线能谱分析对材料进行了表征，证实了富氮PpPDA成功融入金属有机框架结构中。该复合材料具有良好的多孔形态和丰富的有利于金属结合的官能团。间歇式吸附实验表明，吸附量高（q max = 1045.8 mg g-1），吸附动力学快，30分钟内达到平衡。吸附行为符合Langmuir模型（R2 = 0.9847），表明其为单层吸附，具有较高的选择性。这些发现表明Fe-BTC/PpPDA是一种高效、可持续和选择性的多金属水溶液中金的吸附剂。

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来源期刊

Royal Society Open Science Multidisciplinary-Multidisciplinary

CiteScore

6.00

自引率

0.00%

发文量

508

审稿时长

14 weeks

期刊介绍： Royal Society Open Science is a new open journal publishing high-quality original research across the entire range of science on the basis of objective peer-review. The journal covers the entire range of science and mathematics and will allow the Society to publish all the high-quality work it receives without the usual restrictions on scope, length or impact.