Researchers develop graphene oxide membrane with water resistance and efficient hydrogen separation

A research team composed of researchers from Kyoto University in Japan and the Quantum Science and Technology Research and Development Institute has developed a graphene oxide (GO) membrane with high-efficiency hydrogen separation performance, which not only maintains the original hydrogen separation performance of GO membrane, but also greatly improves The water resistance of the GO film is expected to achieve stable supply of low-cost green hydrogen energy and promote the construction of a low-carbon society

GO membranes formed by stacking and compressing graphene oxide (GO) nanosheets have good hydrogen separation performance, but poor water resistance

The researchers explored to improve the swelling state of GO membrane in water and maintain its original hydrogen separation performance by suppressing the electrostatic repulsion between GO nanosheets

Nanodiamonds (NDs) are nanoparticles with a diamond crystal structure

The experimental results show that ND can eliminate the electrostatic repulsion between GO nanosheets and prevent the GO film from swelling in water

The researchers found that the hydrogen permeability can be controlled by adjusting the content of ND

In addition, the combination is not limited to the specific combination of GO+ND, other positively charged chemical materials such as cage polysilsesquioxane (POSS) can also be combined with the GO film to improve the water resistance of the GO film, A wider range of material combination possibilities are revealed

This research result greatly improves the poor water resistance of GO membrane without changing the original hydrogen separation performance of GO membrane, which is helpful to realize the stable supply of green hydrogen energy and promote the construction of a low-carbon society

Original link: https:// source: Ministry of Science and Technology

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