Low temperature ammonia synthesis from atomic N and water on rutile TiO2(110)

Lai，Yuemiao; Guo，Qing; Chen，Xiao

2023-06-01

10.1063/1674-0068/cjcp2210152

Chinese Journal of Chemical Physics   Impact Factor & Quartile

1674-0068

2327-2244

We have investigated the formation of ammonia (NH) from atomic N and water (HO) on a rutile(R)-TiO(110) surface using the temperature-programed desorption method. The formation of NH can be detected after coadsorption of atomic N and HO on the R-TiO(110) surface, desorbing from the 5-fold coordinated Ti (Ti) sites at about 400 K, demonstrating that the NH formation on R-TiO(110) is feasible at low surface temperature. During the process, both hydroxyl groups at the bridging oxygen rows and HO on the Ti sites contribute to the formation of NH, which are affected by HO coverage. At low HO coverage, the direct hopping of hydrogen atoms may be the dominant process for hydrogen transfer; while HO-assisted hydrogen atoms diffusion may be preferred at high HO coverage. Our result will be of significant help to get a deeper insight into the fundamental understandings of hydrogenation processes during the NH synthesis.

Ammonia Hydrogen transfer R-TiO2(110) Temperature programmed desorption

SCI

English

First ; Corresponding

National Key Ramp;D Program of China[22173041] ; National Natural Science Foundation of China["22173042","21973037","XDB17000000"] ; Strategic Priority Research Program of Chinese Academy of Sciences[JCYJ2019080914021660] ; Shenzhen Science and Technology Innovation Committee["ZDSYS20200421111001787","2019ZT08L455"] ; Guangdong Innovative amp; Entrepreneurial Research Team Program["2019JC01X091","121421KYSBYSB20170012"] ; International Partnership Pro-gram of Chinese Academy of Science[2021ZD0303304] ; null[2018YFE0203002]

Physics

Physics, Atomic, Molecular & Chemical

WOS:001038602300004

CHINESE PHYSICAL SOC

2-s2.0-85166151782

Scopus

Shenzhen Key Laboratory of Energy Chemistry,Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China

Lai，Yuemiao,Guo，Qing,Chen，Xiao. Low temperature ammonia synthesis from atomic N and water on rutile TiO2(110)[J]. Chinese Journal of Chemical Physics,2023,36(3):272-278.

Lai，Yuemiao,Guo，Qing,&Chen，Xiao.(2023).Low temperature ammonia synthesis from atomic N and water on rutile TiO2(110).Chinese Journal of Chemical Physics,36(3),272-278.

Lai，Yuemiao,et al."Low temperature ammonia synthesis from atomic N and water on rutile TiO2(110)".Chinese Journal of Chemical Physics 36.3(2023):272-278.