Journal
NANOMATERIALS
Volume 9, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/nano9081163
Keywords
LaFeO3-XNX; RhB degradation; charge separation; gas sensing
Categories
Funding
- National Natural Science Foundation of China [51774180, 51874169, 51634004]
- Natural Science Foundation of Liaoning Province [20180550802]
- Basic Scientific Research Project of colleges and universities in Liaoning Province [2017LNQN18]
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Here SnO2/LaFeO3-XNX composite was fabricated using a wet chemical method and was applied to pollutants degradation and gas sensing for the first time. The composite exhibits high performance for photocatalytic degradation of Rhodamine B (RhB) dye and selectivity sensing of various gases. On the basis of the completed experiments, the improved RhB degradation and selective gas sensing performance resulted from the extended optical absorption via N-2 incorporated surface states and enhanced charge separation via coupling SnO2. Using the scavengers trapping experiments, the superoxide radical (O-2(center dot-)) was investigated as the major scavenger involved in the degradation of RhB over SnO2/LaFeO3-XNX composite. In this paper, the probable reaction steps involved in the RhB dye degradation over SnO2/LaFeO3-XNX composite are proposed. This work will provide reasonable strategies to fabricate LaFeO3-based proficient and stable catalysts for environmental purification. In addition, the result of the selectivity of gas performance is also presented.
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