Pd(II) functionalized vinylene-linked covalent organic frameworks for acidic electrocatalytic hydrogen evolution reaction.
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| Title: | Pd(II) functionalized vinylene-linked covalent organic frameworks for acidic electrocatalytic hydrogen evolution reaction. |
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| Authors: | Yue, Jie-Yu1 (AUTHOR) yuejieyu@sdnu.edu.cn, Ding, Xiu-Li1 (AUTHOR), Song, Li-Ping1 (AUTHOR), Wang, Yu-Tong1 (AUTHOR), Yang, Peng1 (AUTHOR), Ma, Yu1 (AUTHOR) may@sdnu.edu.cn, Tang, Bo1 (AUTHOR) |
| Source: | Microporous & Mesoporous Materials. Oct2022, Vol. 344, pN.PAG-N.PAG. 1p. |
| Subjects: | Hydrogen evolution reactions, Electrocatalysts, Clean energy, Composite construction, Energy shortages, Energy conversion, Electrolytic reduction, Hydrogen as fuel |
| Abstract: | The development of non-platinum-based electrocatalysts for hydrogen evolution reaction (HER) is always a meaningful and hot research issue as it is an effective and promising route to produce clean hydrogen energy and alleviate the energy crisis. Herein, a vinylene-linked covalent organic framework (PY-SE- COF) was constructed by Knoevenagel reaction and served as palladium ions (Pd2+) supports with Pd content of 16.8 wt %. PY-SE–COF–Pd can be applied as an efficient electrocatalyst for hydrogen evolution reaction (HER) in acidic electrolyte with an overpotential of 128 mV at the current density of 10 mA cm−2, outperforming the electrocatalytic activity of individual PY-SE-COF and PdCl 2. This is the first Pd2+ coordinated COFs electrocatalytic system for HER and the current study proves that vinylene-linked COFs are promising platforms for the design and construction of composite pyrolysis-free electrocatalysts for clean energy conversion. A Pd2+ modified vinylene-linked covalent organic framework was constructed and exhibited efficient electrocatalytic performance for hydrogen evolution reaction in acidic media. [Display omitted] • Pd2+ modified vinylene-linked covalent organic frameworks (PY-SE–COF–Pd) was designed and synthesized. • PY-SE–COF–Pd was the first Pd coordinated COF system for hydrogen evolution reaction (HER). • PY-SE–COF–Pd exhibited effieient HER performance with an overpotential of 128 mV at 10 mA cm−2, outperforming the individual PY-SE-COF and PdCl 2. • Pd0 formed by in situ electroreduction in PY-SE–COF–Pd may play a key role in the HER process. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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