Advances in Interface-Modulated Hydrogen-Bond Network Construction for Gas Hydrates and Engineering Strategies

Abstract

Gas hydrate technology has exhibited substantial promise for environmental sustainability and energy applications. The introduction of gas−liquid−solid multiphase reaction systems has proven effective in optimizing the kinetics of hydrate formation. The interfacial properties between the solid phase and gas or water critically govern gas adsorption, water distribution and activity, and hydrogen bonding, thereby significantly influencing hydrate nucleation and formation. This review summarizes recent advances in interface-modulated hydrogen-bond network construction for gas hydrates and engineering strategies. It begins with the fundamental concepts of gas hydrates, including their crystal structures, thermodynamic and kinetic characteristics, and potential applications in the environmental and energy sectors. It then elaborates on how surface characteristicswettability, topography, ionic characteristics, and functional groupsdetermine the construction of hydrogen-bond networks, consequently regulating hydrate formation kinetics and pathways. Furthermore, it systematically compiles engineering strategies for hydrogen-bond networks, such as coating, etching, grafting, pyrolysis, polymerization, and physical treatments, while establishing structure−activity relationships between interfacial properties and hydrate formation kinetics. Finally, critical knowledge gaps and future research priorities for advancing interface-regulated hydrate technologies are proposed. This paper provides theoretical insights for controlling hydrate formation processes and offers practical guidance for the interface design in hydrate technologies.