Loading...
Please wait, while we are loading the content...
Similar Documents
2D Microporous Covalent Organic Frameworks as Cobalt Nanoparticle Supports for Electrocatalytic Hydrogen Evolution Reaction
| Content Provider | MDPI |
|---|---|
| Author | Song, Jialong Liao, Li Zhang, Zerong Yusran, Yusran Wang, Rui Fang, Jing Liu, Yaozu Hou, Yu Wang, Yujie Fang, Qianrong |
| Copyright Year | 2022 |
| Description | Covalent organic frameworks (COFs) are a new class of porous crystalline polymers, which are considered to be excellent supports for metal nanoparticles (MNPs) due to their highly ordered structure, chemical tunability, and porosity. In this work, two novel ultra-microporous COFs, JUC−624 and JUC−625, with narrow pore size distribution have been synthesized and used for the confined growth of ultrafine Co nanoparticles (CoNPs) with high loading. In an alkaline environment, the produced materials were investigated as electrocatalysts for the hydrogen evolution reaction (HER). Electrochemical test results show that CoNPs@COFs have a Tafel slope of 84 $mV·dec^{−1}$, an onset overpotential of 105 mV, and ideal stability. Remarkably, CoNPs@JUC−625 required only 146 mV of overpotential to afford a current density of 10 mA $cm^{−2}$. This research will open up new avenues for making COF-supported ultrafine MNPs with good dispersity and stability for extensive applications. |
| Starting Page | 880 |
| e-ISSN | 20734352 |
| DOI | 10.3390/cryst12070880 |
| Journal | Crystals |
| Issue Number | 7 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-06-21 |
| Access Restriction | Open |
| Subject Keyword | Crystals Environmental Engineering Covalent Organic Frameworks Metal Nanoparticles Hydrogen Evolution Reaction |
| Content Type | Text |
| Resource Type | Article |
