%0 Journal Article 
%A Li, Xiyi
%A Wang, Chao
%A Yang, Jianlong
%A Xu, Youxun
%A Yang, Yi
%A Yu, Jiaguo
%A Delgado Jaén, Juan José
%A Martsinovich, Natalia
%A Sun, Xiao
%A Zheng, Xu-Sheng
%A Huang, Weixin
%A Tang, Junwang
%T PdCu nanoalloy decorated photocatalysts for efficient and selective oxidative coupling of methane in flow reactors
%D 2023
%@ 2041-1723
%U http://hdl.handle.net/10498/32278
%X 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.
%K carbon
%K coke
%K copper
%K hydrogen
%K metal alloy nanoparticle
%K methane
%K palladium
%K titanium dioxide
%K adsorption
%K alloy
%K catalyst
%K methane
%K nanoparticle
%K photodegradation
%K turnover
%K adsorption
%K Article
%K chemical bond
%K controlled study
%K density functional theory
%K molecular stability
%K oxidative coupling
%K photocatalysis
%K quantum mechanics
%K reaction analysis
%K room temperature
%K turnover number
%~ Universidad de Cádiz