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A Scalable Methodology for Reinstating the Superhydrophilicity of Ambient-Contaminant Compromised Surfaces

https://doi.org/10.1021/acsami.5c00724

Papailias, Ilias; Mukhopadhyay, Arani; Pal, Anish; Namvar, Shahriar; Megaridis, Constantine M (April 2025, ACS Applied Materials & Interfaces)

Free, publicly-accessible full text available April 23, 2026
Resiliency, morphology, and entropic transformations in high-entropy oxide nanoribbons

https://doi.org/10.1126/science.adr5604

Shahbazi, Hessam; Seraji, Pardis; Farraj, Husam; Yang, Taimin; Kim, Allen; Fattahpour, Seyyedfaridoddin; Papailias, Ilias; Diamond, Matthew; Namvar, Shahriar; Ahmadiparidari, Alireza; et al (May 2025, Science)

We present the successful synthesis and characterization of a one-dimensional high-entropy oxide (1D-HEO) exhibiting nanoribbon morphology. These 1D-HEO nanoribbons exhibit high structural stability at elevated temperatures (to 1000°C), elevated pressures (to 12 gigapascals), and long exposure to harsh acid or base chemical environments. Moreover, they exhibit notable mechanical properties, with an excellent modulus of resilience reaching 40 megajoules per cubic meter. High-pressure experiments reveal an intriguing transformation of the 1D-HEO nanoribbons from orthorhombic to cubic structures at 15 gigapascals followed by the formation of fully amorphous HEOs above 30 gigapascals, which are recoverable to ambient conditions. These transformations introduce additional entropy (structural disorder) besides configurational entropy. This finding offers a way to create low-dimensional, resilient, and high-entropy materials.
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Free, publicly-accessible full text available May 29, 2026
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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