TY - JOUR
T1 - Tuning of Redox Conductivity and Electrocatalytic Activity in Metal-Organic Framework Films Via Control of Defect Site Density
AU - Shimoni, Ran
AU - He, Wenhui
AU - Liberman, Itamar
AU - Hod, Idan
N1 - Funding Information:
We thank the Ilse Katz Institute for Nanoscale Science and Technology for the technical support in material characterization. This research was supported by the Israel Science Foundation (Grant No. 306/18). W.H. thanks the Planning and Budgeting Committee's fellowship for the financial support.
Funding Information:
We thank the Ilse Katz Institute for Nanoscale Science and Technology for the technical support in material characterization. This research was supported by the Israel Science Foundation (Grant No. 306/18). W.H. thanks the Planning and Budgeting Committee’s fellowship for the financial support.
Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/3/7
Y1 - 2019/3/7
N2 - Redox-active Metal-Organic Frameworks (MOFs) are considered as promising platforms for assembling high quantities of solution-accessible molecular catalysts on conductive surfaces, toward their utilization in electrochemical solar fuel related reactions. Nevertheless, slow redox hopping-based conductivity often constitutes a kinetic bottleneck hindering the overall electrocatalytic performance of these systems. In this work, we show that, by a systematic control of MOF defect site density, one can modulate the spatial distribution of post synthetically installed molecular catalyst and hence accelerate charge transport rates by an order of magnitude. Moreover, the improved MOF conductivity also yields an enhancement in its intrinsic electrocatalytic activity. Consequently, these results offer new possibilities for designing efficient MOF-based electrocatalytic systems.
AB - Redox-active Metal-Organic Frameworks (MOFs) are considered as promising platforms for assembling high quantities of solution-accessible molecular catalysts on conductive surfaces, toward their utilization in electrochemical solar fuel related reactions. Nevertheless, slow redox hopping-based conductivity often constitutes a kinetic bottleneck hindering the overall electrocatalytic performance of these systems. In this work, we show that, by a systematic control of MOF defect site density, one can modulate the spatial distribution of post synthetically installed molecular catalyst and hence accelerate charge transport rates by an order of magnitude. Moreover, the improved MOF conductivity also yields an enhancement in its intrinsic electrocatalytic activity. Consequently, these results offer new possibilities for designing efficient MOF-based electrocatalytic systems.
UR - http://www.scopus.com/inward/record.url?scp=85062346145&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.8b12392
DO - 10.1021/acs.jpcc.8b12392
M3 - Article
AN - SCOPUS:85062346145
SN - 1932-7447
VL - 123
SP - 5531
EP - 5539
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 9
ER -