Parasnis Mruganka Sandip, Fu Yu, Deng Erda, Butler Anthony, Chen Chu Te, Dias Ruveen, Lin Haiqing, Yao Fei, Nalam Prathima C
Department of Materials Design and Innovation, University at Buffalo, Buffalo, New York 14260-1660, United States.
Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, New York 14260-1660, United States.
ACS Appl Mater Interfaces. 2025 Feb 5;17(5):7838-7848. doi: 10.1021/acsami.4c19943. Epub 2025 Jan 24.
This study presents a hybrid microfiltration technology designed for high-performance lead (Pb(II)) remediation, especially from aqueous solutions with high Pb(II) concentrations, by utilizing two-dimensional (2D) TiCT-MXene layers deposited on dry mycelium membranes. The hybrid TiCT-MXene/mycelium (MyMX) membranes were fabricated via a single-step electrochemical deposition (ECD) technique, which enabled a uniform coating of 2D TiCT-MXene onto individual hyphal fibers of a prefabricated mycelium membrane. Optimized ECD parameters for high Pb(II) uptake were identified using scanning electron microscopy and energy-dispersive X-ray spectroscopy. In immersion-based (no-flow) Pb(II) remediation experiments, MyMX membranes demonstrated significantly high Pb(II) removal efficiency (>87-99%) and rapid sorption kinetics across an initial Pb(II) concentration range of 60-1500 ppm in both single-ion and co-ion solutions. The enhanced Pb(II) sorption was attributed to electrostatic interactions and surface complexation assisted by hyphal surface proteins and TiCT-MXene functional groups, as confirmed by infrared and X-ray photoelectron spectroscopies. In cross-flow studies, the MyMX membranes achieved a Pb(II) sorption capacity of ∼1347 mg/g while maintaining a high permeation rate of 51,800 L m bar h at 1500 ppm Pb(II), surpassing the performance of various polymer-based and MXene-based microporous membranes for heavy metal remediation. The biomaterial-based hybrid MyMX membrane represents a significant advancement in water treatment technology, providing a cost-effective, sustainable solution for Pb(II) remediation in contaminated water sources.
本研究提出了一种混合微滤技术，该技术通过利用沉积在干菌丝体膜上的二维（2D）TiCT-MXene层，专门用于高效去除铅（Pb(II)），特别是从高Pb(II)浓度的水溶液中去除。混合TiCT-MXene/菌丝体（MyMX）膜通过单步电化学沉积（ECD）技术制备，该技术能够将2D TiCT-MXene均匀地涂覆在预制菌丝体膜的单根菌丝纤维上。使用扫描电子显微镜和能量色散X射线光谱法确定了高Pb(II)吸附量的优化ECD参数。在基于浸泡（无流动）的Pb(II)修复实验中，MyMX膜在单离子和共离子溶液中，在初始Pb(II)浓度范围为60-1500 ppm时，均表现出显著高的Pb(II)去除效率（>87-99%）和快速的吸附动力学。红外和X射线光电子能谱证实，增强的Pb(II)吸附归因于菌丝表面蛋白和TiCT-MXene官能团辅助的静电相互作用和表面络合。在错流研究中，MyMX膜在1500 ppm Pb(II)时实现了约1347 mg/g的Pb(II)吸附容量，同时保持了51,800 L m bar h的高渗透速率，超过了各种基于聚合物和基于MXene的微孔膜在重金属修复方面的性能。基于生物材料的混合MyMX膜代表了水处理技术的重大进步，为受污染水源中的Pb(II)修复提供了一种经济高效、可持续的解决方案。
