表面处理对Pt/Al<sub>2</sub>O<sub>3</sub>光催化氧化NO的影响

doi:10.11896/cldb.19030281

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Abstract Pt/Al₂O₃ nano-photocatalyst was prepared by impregnation method using chloroplatinic acid as Pt source, and applied to the photocatalytic oxidation of NO. The morphology, structure and optical properties of Pt/Al₂O₃ with and without treated by H₂ reduction annealing were researched by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and ultraviolet-visible absorption spectroscopy (UV-vis). Effect of the surface hydroxyl and the value of Pt over Pt/Al₂O₃ on the photocatalytic properties of the samples during NO oxidation was investigated. The experimental results showed that the morphology and structure of the annealed Pt/Al₂O₃ have no obvious change compared with those of the un-annealed treated samples, but the hydroxyl content on the surface decreased significantly, which resulted in less generation of hydroxyl radicals. Furthermore, the valence of Pt decreased after annealing treatment, which was not benefit for NO photocatalytic oxidation. These results led to the decreased photocatalytic activity of annealed Pt/Al₂O₃ for photocatalytic NO oxidation.

Key words： photocatalysis NO Pt/Al₂O₃ surface hydroxyl

Published: 31 May 2019

CLC number:

X511

Fund:This work was financially supported by the Innovative Research Team of Sichuan Province (2016TD0011), the Sichuan Youth Science and Technology Foundation (2014JQ0017).

About author:: Ning'an Huangrecived his B.E.degree from Nanjing University of Science and Technology in 2014. From September 2015, he learns for master degree in Southwest Petroleum University focusing on the research of photocatalysis on air purification.Ying Zhoureceived his B.S.degree and M.S.degree from Central South University and Chinese Academy of Sciences, respectively. In 2010, he received his PhD at the University of Zurich (UZH) under the supervision of Prof.Greta R. Patzke. He then continued his work with a post-doctoral Forschungskredit grant from UZH. He was also awarded a fellowship by the Alexander von Humboldt Foundation at Karlsruhe Institute of Technology with Prof. Jan-Dierk Grunwaldtand was a visiting professor at Kyoto University. He currently holds a professorship at Southwest Petroleum University. His research interest is the clean utilization of oil and gas and environmental remediation materials as well as the related in situ characterization techniques.

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	HUANG Ning'an
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Cite this article:

HUANG Ning'an,ZHAO Ziyan,ZOU Yanzhao, et al. Research of Surface Treatment on the Photocatalytic NO OxidationPerformance over Pt/Al₂O₃[J]. Materials Reports, 2019, 33(12): 1921-1925.

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http://www.mater-rep.com/EN/10.11896/cldb.19030281 OR http://www.mater-rep.com/EN/Y2019/V33/I12/1921

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