Essential role of lattice oxygen in hydrogen sensing reaction
Jilin University · State Key Laboratory of Inorganic Synthesis and Preparative Chemistry · +6 more institutions
Abstract
Understanding the sensing mechanism of metal oxide semiconductors is imperative to the development of high-performance sensors. The traditional sensing mechanism only recognizes the effect of surface chemisorbed oxygen from the air but ignores surface lattice oxygen. Herein, using in-situ characterizations, we provide direct experimental evidence that the surface chemisorbed oxygen participated in the sensing process can come from lattice oxygen of the oxides. Further density functional theory (DFT) calculations prove that the p-band center of O serves as a state of art for regulating the participation of lattice oxygen in gas-sensing reactions. Based on our experimental data and theoretical calculations, we…
Citation impact
- FWCI
- 25.34
- Percentile
- 100%
- References
- 64
Authors
11- JLJiayu Li
Jilin University, State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- WSWenzhe Si
State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University
- LSLei Shi
Jilin University, State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- RGRuiqin GaoCorresponding
Ningbo University, Ningbo University of Technology
- QLQiuju LiCorresponding
Army Medical University
Topics & keywords
- Oxygen
- Lattice (music)
- Density functional theory
- Chemical physics
- Oxide
- Hydrogen
- Materials science
- Semiconductor