TY - JOUR
T1 - Influence of Metal-Organic Framework Porosity on Hydrogen Generation from Nanoconfined Ammonia Borane
AU - Chung, Jing Yang
AU - Liao, Chi Wei
AU - Chang, Yi Wei
AU - Chang, Bor Kae
AU - Wang, Hao
AU - Li, Jing
AU - Wang, Cheng Yu
N1 - Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/12/14
Y1 - 2017/12/14
N2 - Hydrogen released from chemical hydride ammonia borane (AB, NH3BH3) can be greatly improved when AB is confined in metal-organic frameworks (MOFs), showing reduced decomposition temperature and suppressed unwanted byproducts. However, it is still debatable whether the mechanism of improved AB dehydrogenation is due to catalysis or nanosize. In this research, selected MOFs (IRMOF-1, IRMOF-10, UiO-66, UiO-67, and MIL-53(Al)) were chosen to explore both catalytic effect of the metal clusters and the manipulation of pore size for nanoconfinement by variations in ligand length. When AB particle size was restricted by the controlled micropores of MOFs, we observed that the decomposition temperature was not correlated to the MOF catalytic environment, but inversely proportional to the reciprocal of the particle size. The results correspond well with the derived thermodynamic model for AB decomposition considering surface tension of nanoparticles.
AB - Hydrogen released from chemical hydride ammonia borane (AB, NH3BH3) can be greatly improved when AB is confined in metal-organic frameworks (MOFs), showing reduced decomposition temperature and suppressed unwanted byproducts. However, it is still debatable whether the mechanism of improved AB dehydrogenation is due to catalysis or nanosize. In this research, selected MOFs (IRMOF-1, IRMOF-10, UiO-66, UiO-67, and MIL-53(Al)) were chosen to explore both catalytic effect of the metal clusters and the manipulation of pore size for nanoconfinement by variations in ligand length. When AB particle size was restricted by the controlled micropores of MOFs, we observed that the decomposition temperature was not correlated to the MOF catalytic environment, but inversely proportional to the reciprocal of the particle size. The results correspond well with the derived thermodynamic model for AB decomposition considering surface tension of nanoparticles.
UR - http://www.scopus.com/inward/record.url?scp=85038441501&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.7b10526
DO - 10.1021/acs.jpcc.7b10526
M3 - 期刊論文
AN - SCOPUS:85038441501
SN - 1932-7447
VL - 121
SP - 27369
EP - 27378
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 49
ER -