.png){kind=icon}
.png){kind=icon}
Return
Tuning Lewis acid in nickel-containing polyoxometalates for enhanced ethanol selectivity of methane electrooxidation reactions
.png){kind=icon}
PRE
AI
J
Q
C
S
J
J
DOI：10.26599/NR.2026.94908604.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
The electrocatalytic oxidation of methane (CH4) facilitates the direct conversion of abundant natural gas into value-added chemicals utilizing renewable electricity. However, the high dissociation energy of the C-H bond and the presence of multiple competing reaction pathways lead to poor product selectivity. We synthesized a Ni-based polyoxometalate (Ni-POM-VO) through cluster-nucleus co-assembly and introduced rich oxygen vacancies using N2 cold plasma etching. The optimized catalyst attained a Faradaic efficiency of 88.4% for ethanol at 1.7 V versus the reversible hydrogen electrode (RHE). Notably, the oxygen vacancies in Ni-POM-VO create Lewis acid sites that enhance methane adsorption and activation, thereby facilitating its conversion into *CH2 and *CH2OH intermediates. The subsequent adsorption of these intermediates onto the polyoxometalate (POM) framework promotes C-C coupling, resulting in ethanol production. This work provides a new method for adjusting the Lewis acid content on the catalyst surface through oxygen vacancies, improving the selectivity of methane electro oxidation to ethanol.
Keywords:
Lewis acid
polyoxometalates (POMs)
oxygen vacancy
methane electrooxidation
selectivity
Journal
IF:
9
Papers:
7.4K
Citations:
4.9W
Organization
Cited Papers