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Metal Ions Removal from Organic Solvents using MXene-Based Membranes

https://doi.org/10.1021/acsaenm.3c00450

Gnani_Peer_Mohamed, Syed Ibrahim; Arabi_Shamsabadi, Ahmad; Kavousi, Sepideh; Dadashi_Firouzjaei, Mostafa; Elliott, Mark; Yazdanparast, Sanaz; Nejati, Siamak; Asle_Zaeem, Mohsen; Bavarian, Mona (October 2023, ACS Applied Engineering Materials)

We investigated the applicability of membranes, prepared with Ti3C2Tx MXene as the active layer, for metal ion removal from an organic solvent. The removal of various mixed metal ions from propylene glycol monomethyl ether acetate, commonly used in the microelectronics industry, was evaluated. The MXene membrane exhibited over 90% removal efficiency for metal ions such as Li, Ca, Cr, Fe, Ni, and Co and over 80% for metal ions such as Al, V, and Pb from a solution containing 17 metal ions. This result highlights the potential of MXene as an effective material for ion removal from organic solvents.
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One-Step Synthesis of Cationic Covalent Organic Frameworks

https://doi.org/10.1021/acs.jpclett.2c02543

Mohamed, Syed Ibrahim; Zhang, Tan; Jiang, Zhen; Rappe, Andrew M.; Nejati, Siamak (November 2022, The Journal of Physical Chemistry Letters)

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SonifyIt: Towards Transformative Sound for All Robots

https://doi.org/10.1109/LRA.2022.3193228

Zhang, Brian J.; Sigafoos, Noel; Moffit, Rabecka; Syed, Ibrahim; Adams, Lili S.; Fick, Jason; Fitter, Naomi T. (October 2022, IEEE Robotics and Automation Letters)

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Vapor‐Phase Synthesis of Electrocatalytic Covalent Organic Frameworks

https://doi.org/10.1002/adma.202309302

Mohamed, Syed Ibrahim Gnani Peer; Namvar, Shahriar; Zhang, Tan; Shahbazi, Hessam; Jiang, Zhen; Rappe, Andrew M.; Salehi‐Khojin, Amin; Nejati, Siamak (December 2023, Advanced Materials)

Abstract The inability to process many covalent organic frameworks (COFs) as thin films plagues their widespread utilization. Herein, a vapor‐phase pathway for the bottom‐up synthesis of a class of porphyrin‐based COFs is presented. This approach allows integrating electrocatalysts made of metal‐ion‐containing COFs into the electrodes’ architectures in a single‐step synthesis and deposition. By precisely controlling the metal sites at the atomic level, remarkable electrocatalytic performance is achieved, resulting in unprecedentedly high mass activity values. How the choice of metal atoms, i.e., cobalt and copper, can determine the catalytic activities of POR‐COFs is demonstrated. The theoretical data proves that the Cu site is highly active for nitrate conversion to ammonia on the synthesized COFs.
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