Hydrogen storage in Zr-fumarate MOF

• Zr-fumarate MOFs were synthesized using water as solvent and HCOOH as modulator.
• The resultant Zr-fum MOFs has high thermal and hydro stabilities.
• The H2 uptake capacity is comparable to early reported MOF materials.
• The easy production qualifies them as good candidate for H2 storage applications.

In this work, we synthesized Zr-fumarate MOFs by applying water as solvent and formic acid as modulator. Highly crystalline Zr-fumarate MOF obtained from 120 °C, 24 h synthesis conditions showed high thermal and hydro stabilities. Compared to the early reported MOF materials, the lower cost, more environmentally friendly synthesis process and comparable hydrogen uptake capacity make Zr-fumarate MOFs a good candidate for hydrogen storage applications.