We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Rational Design of Hydroxyl‐Rich Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene Quantum Dots for High‐Performance Electrochemical N<sub>2</sub> Reduction.
- Authors
Jin, Zhaoyong; Liu, Chuangwei; Liu, Zaichun; Han, Jingrui; Fang, Yanfeng; Han, Yaqian; Niu, Yusheng; Wu, Yuping; Sun, Chenghua; Xu, Yuanhong
- Abstract
To enable an efficient and cost‐effective electrocatalytic N2 reduction reaction (NRR) the development of an electrocatalyst with a high NH3 yield and good selectivity is required. In this work, Ti3C2Tx MXene‐derived quantum dots (Ti3C2Tx QDs) with abundant active sites enable the development of efficient NRR electrocatalysts. Given surface functional groups play a key role on the electrocatalytic performance, density functional theory calculations are first conducted, clarifying that hydroxyl groups on Ti3C2Tx offer excellent NRR activity. Accordingly, hydroxyl‐rich Ti3C2Tx QDs (Ti3C2OH QDs) are synthesized as NRR catalysts by alkalization and intercalation. This material offers an NH3 yield and Faradaic efficiency of 62.94 µg h−1 mg−1cat. and 13.30% at −0.50 V, respectively, remarkably higher than reported MXene catalysts. This work demonstrates that MXene catalysts can be mediated through the optimization of both QDs sizes and functional groups for efficient ammonia production at room temperature.
- Subjects
QUANTUM dots; ELECTROLYTIC reduction; HYDROXYL group; DENSITY functional theory; FUNCTIONAL groups; GROUP size
- Publication
Advanced Energy Materials, 2020, Vol 10, Issue 22, p1
- ISSN
1614-6832
- Publication type
Article
- DOI
10.1002/aenm.202000797