Transformation Journey of Zr-based MOFs: Study on Mechanics and Hydrogen Storage under Doping Regulation

TL;DR

This paper investigates how doping Zr-based MOFs with different metal ions affects their mechanical stability and hydrogen storage capacity, using multiscale computational methods to guide the design of improved materials.

Contribution

It provides a systematic computational analysis of metal ion doping effects on Zr-based MOFs' properties, offering new insights for material optimization.

Findings

Metal ion substitution alters mechanical stability.

Doping influences hydrogen adsorption capacity.

Insights aid in designing high-performance MOFs.

Abstract

This study delves into the transformation journey of Zr-based Metal-Organic Frameworks (MOFs), focusing on enhancing their mechanical properties and hydrogen storage capacities through doping regulation. MOFs, a versatile class of crystalline porous materials, have garnered significant attention due to their unique properties and broad potential applications in gas storage, separation, catalysis, and sensing. Among them, Zr-based MOFs stand out for their exceptional stability and high surface area. This research systematically investigates six key Zr-based MOFs (UIO-66, UIO-67, UIO-68, MOF-801, MOF-802, and MOF-841) using multiscale computational methods, including molecular dynamics (MD) simulations, grand canonical Monte Carlo (GCMC) simulations, and density functional theory (DFT). The study explores the impact of metal ion substitution (Fe, Co, Ni, Cu, Zn) on the mechanical and hydrogen storage properties of these MOFs. Our findings reveal that metal ion substitution significantly influences the mechanical stability and hydrogen adsorption capacity of Zr-based MOFs, providing valuable insights for the design and optimization of high-performance MOF materials.