Volume 93
Wang, J., Luo, J., Yao, Y., Song, J., & Shi, Y. (2024). Room-temperature hydrogen adsorption in Pd nanoparticle decorated UiO-66-NH2 via spillover. Particuology, 93, 309-315. https://doi.org/10.1016/j.partic.2024.07.008
Room-temperature hydrogen adsorption in Pd nanoparticle decorated UiO-66-NH2 via spillover
Jingchuan Wang *, Junhong Luo, Yong Yao, Jiangfeng Song, Yan Shi
Institute of Materials, China Academy of Engineering Physics, Jiangyou, 621908, China
10.1016/j.partic.2024.07.008
Volume 93,
October 2024,
Pages 309-315
Received 28 May 2024, Revised 4 July 2024, Accepted 13 July 2024, Available online 23 July 2024, Version of Record 29 July 2024.
E-mail:
wjchit@163.com
Highlights
• Pd-nanoparticles were decorated on UiO-66-NH2 to reduce diffusion energy barrier.
• Pd-nanoparticles were decorated on UiO-66-NH2 could increase the hydrogen spillover effect.
• The hydrogen up taken in UiO-66-NH2-1Pd was 3.7 wt% under 20 MPa at 298 K.
• DFT calculations show that Hads of UiO-66-NH2-Pd was much lower than that of UiO-66-NH2 and UiO-66.
Abstract
To improve room-temperature hydrogen storage, palladium (Pd) nanoparticles were innovatively decorated by carbon bridge onto the amino-group functioned Zr-terephthalate metal-organic framework (MOF) UiO-66 to reduce the diffusion energy barrier and then improve the hydrogen spillover effect. Powder X-ray diffraction shows broad Pd peak and retained UiO-66-NH2 integrity after Pd decoration. The hydrogen uptake capacity show that UiO-66-NH2-Pd exhibits best hydrogen storage performance than UiO-66-NH2 and pristine UiO-66. The hydrogen up taken in Pd decorated UiO-66 (UiO-66-NH2-1Pd) was close to 4 wt% under 20 MPa at room temperature. Density functional theory (DFT) calculations show that hydrogen adsorption energy of UiO-66-NH2-Pd was −0.5897 eV, which was much lower than that of UiO-66-NH2 (−0.3716 eV) and UiO-66 (−0.2975 eV). Ultimately, Pd decorated NH2 group functioned UiO-66 enable improve storage capacities through hydrogen spillover under ambient conditions which could satisfy the demand for sustainable energy, especially for the long-term storage energy media.
Graphical abstract
Keywords
Hydrogen storage; UiO-66-NH2; Pd decorated; Spillover
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