We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
PdCu nanoalloy decorated photocatalysts for efficient and selective oxidative coupling of methane in flow reactors.
- Authors
Li, Xiyi; Wang, Chao; Yang, Jianlong; Xu, Youxun; Yang, Yi; Yu, Jiaguo; Delgado, Juan J.; Martsinovich, Natalia; Sun, Xiao; Zheng, Xu-Sheng; Huang, Weixin; Tang, Junwang
- Abstract
Methane activation by photocatalysis is one of the promising sustainable technologies for chemical synthesis. However, the current efficiency and stability of the process are moderate. Herein, a PdCu nanoalloy (~2.3 nm) was decorated on TiO2, which works for the efficient, stable, and selective photocatalytic oxidative coupling of methane at room temperature. A high methane conversion rate of 2480 μmol g−1 h−1 to C2 with an apparent quantum efficiency of ~8.4% has been achieved. More importantly, the photocatalyst exhibits the turnover frequency and turnover number of 116 h−1 and 12,642 with respect to PdCu, representing a record among all the photocatalytic processes (λ > 300 nm) operated at room temperature, together with a long stability of over 112 hours. The nanoalloy works as a hole acceptor, in which Pd softens and weakens C-H bond in methane and Cu decreases the adsorption energy of C2 products, leading to the high efficiency and long-time stability. Efficient and stable photocatalytic oxidative coupling of methane to C2 products is revealed by Tang's group via synergistic effects of a PdCu nanoalloy cocatalyst which achieves high TONPdCu of 12642 and TOFPdCu of 116 h−1 with >100 hour stability.
- Subjects
OXIDATIVE coupling; METHANE; PHOTOCATALYSTS; TURNOVER frequency (Catalysis); QUANTUM efficiency; CHEMICAL synthesis; PHOTOVOLTAIC power systems
- Publication
Nature Communications, 2023, Vol 14, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-023-41996-y