Flexible Metal–Organic Frameworks as CO₂ Adsorbents en Route to Energy‐Efficient Carbon Capture

Abstract

Innovation in the realm of adsorbents for carbon capture is a necessity for meeting the carbon neutrality goal by 2060. Flexible metal–organic frameworks (MOFs) hold great promise for energy‐efficient carbon capture as a direct result of their high working capacity, high selectivity, and intrinsic thermal management during gate‐opening adsorption. In this review, the development and recent progress of flexible MOFs are summarized, the reported methods for control over flexibility are outlined, and the challenges and potential solutions of these materials toward practical carbon capture are discussed. It is envisioned that a deep molecular understanding of the adsorption mechanism in conjunction with a handle over gate‐opening phenomena is a critical element for promoting the performance and large‐scale application of flexible MOFs.

Surprising Use of the Business Innovation Bass Diffusion Model To Accurately Describe Adsorption Isotherm Types I, III, and V

“…Yao and coworkers explained why regular IAST is not applicable to mixtures with components with stepped isotherms . Coudert developed the OFAS theory based on the approach of utilizing two independent models for fitting the isotherm before and after the step .…”

“…Their step-shaped isotherms indicate outstanding storage and capture properties as well as good separation ability but are difficult to fit for calculations with existing models. Yao et al highlighted that binary co-adsorption predictions using IAST based on single-component isotherm models are not possible for these materials and suggested difficult mixture experiments as the only alternative . Interpolation between the isotherm points has been used in applications of IAST to get good fits in cases with stepped isotherms as it is even built into the commonly used pyIAST prediction tool. , The lack of models for isotherms in these flexible adsorbents also limits the utility of heats of adsorption calculations based on the Clausius–Clapeyron equation.…”

Nanoengineered Carbon‐Based Interfaces for Advanced Energy and Photonics Applications: A Recent Progress and Innovations

“…Metal-organic frameworks (MOFs) [118] are a novel family of advanced materials with a set of unique properties that make them promising for numerous applications, including energy storage and generation. [119,120] MOFs feature a very high specific surface area and a controllable internal structure. Combining MOFs and graphene into a single interfacial system is promising for the supercapacitor applications, yet requires the use of advanced nanoengineering.…”

In Situ Growth of a Stable Metal–Organic Framework (MOF) on Flexible Fabric via a Layer-by-Layer Strategy for Versatile Applications

“…In the past two decades, metal–organic frameworks (MOFs) have tremendously fostered the development of nano and porous materials due to their specific advantages in chemical and structural tunability with extremely high surface area, diverse structures, and tunable pore size. , To date, numerous MOFs have developed with different organic ligands and metal ions for various applications, such as filtration, gas storage, , separations, antimicrobials, , energy storage, catalysis, water harvesting, and drug delivery . However, prior studies have investigated MOFs mostly in the powder form, which greatly limits their practical deployment.…”