Novel hydrogen storage properties of palladium nanocrystals activated by a pentagonal cyclic twinned structure
hydrogen storage, lattice expansion, twinned structure, palladium nanoparticles
Researchers appear to have neglected a special form of crystallites, pentagonal cyclic twinning, in which an obvious two-dimensional lattice expansion exists leading to novel physical–chemical properties associated with the changes in geometric and electronic structures. Using the storage and release of hydrogen in Pd nanocrystals as a probe, we have found that icosahedral pentagonal cyclic twinned Pd nanocrystals had distinct hydrogen storage properties, due to the two-dimensional lattice expansions, quite different from those of the octahedral single crystalline counterpart. In addition, the two-dimensional lattice expansion in pentagonal cyclic twinned Pd nanocrystals causes a change in electronic structure, which results in novel catalytic properties involving in situ formation of PdHx pentagonal cyclic twinned nanocrystals.
Tsinghua University Press
Huang Huang,Shixiong Bao,Qiaoli Chen,Yanan Yang,Zhiyuan Jiang,Qin Kuang,Xiaoyin Wu,Zhaoxiong Xie,Lansun Zheng, Novel hydrogen storage properties of palladium nanocrystals activated by a pentagonal cyclic twinned structure. NanoRes.2015, 8(8): 2698–2705