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.
作者简介: 黄宁岸,2014年毕业于南京理工大学,获得工学学士学位。于2015年开始于西南石油大学攻读硕士学位,主要从事光催化于空气净化方面的研究。周莹,西南石油大学材料科学与工程学院院长、教授、博士生导师。2004年毕业于中南大学无机非金属材料专业,2007年获中国科学院上海光学精密机械研究所材料学硕士学位,2010年获瑞士苏黎世大学(UZH)博士学位,之后获得苏黎世大学优秀青年基金资助从事博士后研究,并在洪堡基金会的资助下在德国卡尔斯鲁厄理工学院(KIT)从事研究工作,长期从事能源催化材料及相关原位表征技术研究。在Angew. Chem. Int. Ed.,Small,ACS Catal.,J. Mater. Chem. A, J. Phys. Chem. C,Nanoscale,ACS Appl. Mater. Inter.等期刊发表SCI论文84篇,授权发明专利9项。
引用本文:
黄宁岸, 赵梓俨, 邹彦昭, 周莹. 表面处理对Pt/Al2O3光催化氧化NO的影响[J]. 材料导报, 2019, 33(12): 1921-1925.
HUANG Ning'an, ZHAO Ziyan, ZOU Yanzhao, ZHOU Ying. Research of Surface Treatment on the Photocatalytic NO OxidationPerformance over Pt/Al2O3. Materials Reports, 2019, 33(12): 1921-1925.
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