we for the first time report the use of guanidinium ILs as auxiliary agents to synthesize ZIF-8 in the mixture of water and poly ethylene glycols PEG which is kind of easily available biodegradable an

The use of guanidinium ILs as auxiliary agents not only promotes the nucleation and growth of ZIF-8 crystals, but also improves the crystallinity and morphology of the final product. The resulting ZIF-8 crystals exhibit excellent thermal stability and gas adsorption properties, making them promising candidates for gas separation and storage applications. Moreover, the use of water and PEG as solvents reduces the environmental impact of the synthesis process, making it a more sustainable and eco-friendly approach. Overall, this work demonstrates the potential of using guanidinium ILs and green solvents for the synthesis of metal-organic frameworks with enhanced properties for various applications.