A novel porous material that has unique carbon dioxide retention properties has been developed through research led by Nottingham University.
The study forms part of efforts to develop new materials for gas storage applications and could have an impact in the advancement of new carbon capture products.
It focuses on the metal organic framework NOTT-202a, which has a unique honeycomb-like structural arrangement and can be considered to represent a new class of porous material.
Importantly, the material structure allows selective adsorption of carbon dioxide.
The unique defect structure can be correlated directly to its gas adsorption properties.
While other gases such as nitrogen, methane and hydrogen can pass back through, the carbon dioxide remains trapped in the materials nanopores, even at low temperatures.
Lead researcher Professor Martin Schröder, in the University’s School of Chemistry, said: “The unique defect structure that this new material shows can be correlated directly to its gas adsorption properties.”
NOTT-202a consists of a tetra-carboxylate ligands — a honeycomb-like structure made of a series of molecules or ions bound to a central metal atom — and filled with indium metal centres.
This forms a novel structure consisting of two interlocked frameworks.
X-ray powder diffraction measurements at Diamond Light Source and advanced computer modelling were used to gain an insight into the unique carbon dioxide capturing properties of the material.
The study has been funded by the ERC Advanced Grant COORDSPACE and by an EPSRC Programme Grant ChemEnSus aimed at applying coordination chemistry to the generation of new multi-functional porous materials that could provide innovative solutions for key issues around environmental and chemical sustainability.
These projects incorporate multi-disciplinary collaborations across chemistry, physics and materials science, and aim to develop new materials that could have application in gas storage, sieving and purification, carbon capture, chemical reactivity and sensing.
