Abstract
Photo-active metal-organic frameworks (MOFs) are considered as promising materials for the study of photo-electrochemical cells (PECs). They can be utilized as porous, high surface area scaffolds for the assembly of molecular chromophores atop semiconducting electrodes. Usually, however, the lack of prominent electronic interactions between adjacent MOF-installed chromophores impedes the development of PECs based solely on MOFs (without the use of a semiconducting electrode, e.g. TiO 2 ). Here we demonstrate that unlike standard semiconducting photo-electrodes, the photo-electrochemical behavior of a MOF-based electrode can be switched from photo-anodic to photo-cathodic by using appropriate redox mediators in the electrolyte. Additionally, a proof-of-principle photo-electrocatalytic H 2 production using a MOF-based photo-cathode is provided. Thus, these findings have a clear impact on the design of MOF-based PECs for solar fuel generation.
| Original language | English |
|---|---|
| Pages (from-to) | 3046-3053 |
| Number of pages | 8 |
| Journal | Journal of Materials Chemistry A |
| Volume | 7 |
| Issue number | 7 |
| DOIs | |
| State | Published - 2019 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© The Royal Society of Chemistry.
Funding
We thank the Ilse Katz Institute for Nanoscale Science and Technology for the technical support in materials characterization. This research was supported by the Israel Science Foundation (ISF) (grant No. 603/18). W. He thanks the Planning and Budgeting Committee's (PBC) fellowship for the nancial support.
| Funders | Funder number |
|---|---|
| Israel Science Foundation | 603/18 |
