| 周黔龙,李莉,杨长龙,焦玉振,张鑫悦.光还原Pt掺杂三维有序大孔ZrO2复合材料的光降解与光解水制氢[J].分子催化,2017,31(3):236-246 |
| 光还原Pt掺杂三维有序大孔ZrO2复合材料的光降解与光解水制氢 |
| The Photocatalytic and Hydrogen Production of Pt-doped Three-dimensionally Ordered Macroporous Composite ZrO2 by Photoreduction Method |
| 投稿时间：2017-02-09 修订日期：2017-04-13 |
| DOI： |
| 中文关键词: 聚苯乙烯 光还原 3DOM Pt/ZrO2 光催化 制氢 |
| 英文关键词:polystyrene (PS) photoreduction 3DOM Pt/ZrO2 photocatalysis hydrogen production |
| 基金项目:国家自然科学基金（批准号：21376126）、黑龙江省自然科学基金资助项目（批准号：B201106）、黑龙江省教育厅科学技术研究项目（批准号：12511592）、黑龙江省政府博士后资助经费（批准号：LBH-Z11108）、黑龙江省政府博士后科研启动经费（批准号：LBH-Q13172）、齐齐哈尔大学大学生创新创业训练计划项目（批准号：201610221112）资助。 |
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| 中文摘要: |
| 采用胶晶模板技术结合光还原方法制备了Pt掺杂复合材料三维有序大孔Pt/ZrO2（3DOM Pt/ZrO2）. 通过X-射线衍射（XRD）、X-射线光电子能谱（XPS）、扫描电子显微镜（SEM）、紫外-可见漫反射吸收光谱（UV-Vis/DRS）和氮气吸附-脱附等测试方法对复合材料3DOM Pt/ZrO2的晶相、组成、结构、形貌以及表面物理化学性质等进行表征. 结果表明，Pt掺杂复合材料3DOM Pt/ZrO2与单体ZrO2的晶相相一致，其形貌呈现三维有序大孔结构，且孔结构排列整齐有序，孔壁为介孔结构. 经光还原作用后该复合材料中Pt主要以单质形式存在，并且均匀分布在三维有序复合材料表面. 同时，与单体ZrO2相比，复合材料3DOM Pt/ZrO2的BET比表面积显著增大，光吸收性能发生改变，在240~350 nm间呈现强吸收. 另外，在多模式光降解实验中，3DOM Pt/ZrO2的光活性明显增强. 同时，其光解水制氢性能差不多是P25的2.5倍. |
| 英文摘要: |
| In this paper, three-dimensionally ordered macroporous (3DOM) composite Pt/ZrO2 was prepared by the colloidal crystal template technology combined with photoreduction method. The composition, crystalline structure, morphology and surface physicochemical properties of 3DOM Pt/ZrO2 were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Scanning electron microscopy (SEM), UV-visible diffuse reflectance (UV-vis/DRS), and nitrogen adsorption-desorption testing methods. The results showed that 3DOM Pt/ZrO2 composite had the tetragonal phase of ZrO2, which exhibited a three-dimensionally ordered macroporous structure, whose pore structure was neat and orderly, and pore walls were the mesoporous structure. Pt mainly showed the elemental form in composite 3DOM Pt/ZrO2, which evenly distributed on the surface of the composite material. At the same time, compared with the monomer of ZrO2, the BET specific surface area of composite 3DOM Pt/ZrO2 was significantly increased, and the optical absorption was changed, strong absorption occured at 240~350 nm. Otherwise, in the multi-mode photocatalytic experiments, the photocatalytic activity of 3DOM Pt/ZrO2 obviously was enhanced; meanwhile, the hydrogen yield of the 3DOM Pt/ZrO2 composite was 2.5 times that of commercial P25, which also showed excellent photocatalytic activity. |
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