Room-temperature hydrogen adsorption in Pd nanoparticle decorated UiO-66-NH2 via spillover  

作　　者：Jingchuan Wang Junhong Luo Yong Yao Jiangfeng Song Yan Shi 

机构地区：[1]Institute of Materials,China Academy of Engineering Physics,Jiangyou,621908,China

出　　处：《Particuology》2024年第10期309-315,共7页颗粒学报（英文版）

基　　金：supportedby the National Natural Science Foundation of China(No.52371242).

摘　　要：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-NH_(2) integrity after Pd decoration. The hydrogen uptake capacity show that UiO-66-NH_(2)-Pd exhibits best hydrogen storage performance than UiO-66-NH_(2) and pristine UiO-66. The hydrogen up taken in Pd decorated UiO-66 (UiO-66-NH_(2)-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-NH_(2)-Pd was −0.5897 eV, which was much lower than that of UiO-66-NH_(2) (−0.3716 eV) and UiO-66 (−0.2975 eV). Ultimately, Pd decorated NH_(2) 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.

关 键 词：Hydrogen storage UiO-66-NH_(2) Pd decorated SPILLOVER 

分 类 号：TB383[一般工业技术—材料科学与工程]