期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 21, 期 6, 页码 -出版社
SPRINGER
DOI: 10.1007/s11051-019-4564-8
关键词
Polystyrene; Three-dimensional order; Hollow sphere; Pt/TiO2-ZrO2; Photocatalysis; Photocatalytic hydrogen evolution; Nanostructured colloids
资金
- National Natural Science Foundation of China [21376126]
- Fundamental Research Funds in Heilongjiang Provincial Universities, China [135209105]
- Government of Heilongjiang Province Postdoctoral Grants, China [LBH-Z11108]
- Postdoctoral Researchers in Heilongjiang Province of China Research Initiation Grant Project [LBH-Q13172]
- College Students' Innovative Entrepreneurial Training Program of Qiqihar University
- Qiqihar University in 2016 College Students Academic Innovation Team
In this paper, a three-dimensional ordered hollow sphere (3DOH) structure composite Pt/TiO2-ZrO2 was prepared by using polystyrene (PS) colloidal spheres as the template and combining with two-step vacuum impregnation method, of which the composition, crystalline structure, morphology, and surface physicochemical properties were characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance (UV-vis/DRS), photoluminescence (PL), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and nitrogen adsorption-desorption measurements. The results illustrate the crystal type of 3DOH Pt/TiO2-ZrO2 is mainly anatase TiO2 and tetragonal ZrO2 phase, which exhibits a three-dimensional ordered hollow sphere structure. Hollow spheres are arranged orderly; moreover, the composite shows a strong absorption in the visible region due to the effect of surface plasmon absorption (SPA) after doping Pt nanoparticles. Meanwhile, the photocatalytic activity of 3DOH Pt/TiO2-ZrO2 was investigated by using Congo red as the model molecule. The results show that 3DOH Pt/TiO2-ZrO2 has good photocatalytic activity under multi-modes photocatalytic experiments, and its activity is higher than that of P25, ZrO2, and other Pt/TiO2-ZrO2 not treated by PS colloidal spheres. In addition, the total amount of hydrogen production of 3DOH Pt/TiO2-ZrO2 is 100 times as much as the commercial P25 in the photocatalytic hydrogen evolution experiment (8 h), which shows an excellent photolysis of water hydrogen production activity.
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