北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (6): 1141-1146.doi: 10.13700/j.bh.1001-5965.2017.0444

• 论文 • 上一篇    下一篇

Co和P掺杂对α-Fe2O3光电化学催化分解水的影响

朱珊1, 俞有幸1, 郝维昌2   

  1. 1. 北京航空航天大学 材料科学与工程学院, 北京 100083;
    2. 北京航空航天大学 物理科学与核能工程学院, 北京 100083
  • 收稿日期:2017-07-03 出版日期:2018-06-20 发布日期:2018-06-28
  • 通讯作者: 俞有幸.E-mail:yuyouxing@buaa.edu.cn E-mail:yuyouxing@buaa.edu.cn
  • 作者简介:朱珊 女,硕士研究生。主要研究方向:纳米氧化铁材料的制备、光电化学催化分解水性能;俞有幸 男,博士,副教授,硕士生导师。主要研究方向:磁性材料、电催化材料;郝维昌 男,博士,教授,博士生导师。主要研究方向:氧化物半导体。
  • 基金资助:
    国家自然科学基金(51201004)

Effect of Co and P doping on α-Fe2O3 photoelectrochemical catalysis water splitting

ZHU Shan1, YU Youxing1, HAO Weichang2   

  1. 1. School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
    2. School of Physics and Nuclear Energy Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2017-07-03 Online:2018-06-20 Published:2018-06-28

摘要: 在众多光阳极材料中,纳米结构材料α-Fe2O3由于其光吸收显著、化学稳定性好、储量丰富等优势,被认为是最有前途的材料之一。利用水热法制备了具有良好光解水性能的Co和P掺杂α-Fe2O3纳米材料。经过掺杂后α-Fe2O3纳米材料仍为纳米棒状形貌,纳米棒的粒径增加。实验发现,Co掺杂α-Fe2O3制成的电极在标准光照射下的最大光生电流密度为0.453 mA/cm2,是未掺杂样品的20.6倍,P掺杂α-Fe2O3制成的电极在标准光照射下的最大光生电流密度为0.276 mA/cm2,是未掺杂样品的12.5倍,具备了高效光解水性能。同时通过SEM、TEM、XRD、UV-Vis和Mott-Schottky测试等方法,结合形貌与结构表征,研究了α-Fe2O3的光电化学分解水性能影响机理。

关键词: 光电化学催化分解水, &alpha, -Fe2O3, Co掺杂, P掺杂, 纳米结构材料

Abstract: Among many photoanode materials, the nanostructured material α-Fe2O3 is considered as one of the most promising materials due to its remarkable light absorption, good chemical stability and abundant reserves. Co and P doped α-Fe2O3 nanomaterials with excellent water splitting properties were prepared by hydrothermal method. After doping, α-Fe2O3 nanomaterial is still nanorod shaped, and the particle size of nanorods increases. Experiments show that the maximum photocurrent density has reached 0.453 mA/cm2(Co doped α-Fe2O3) and 0.276 mA/cm2(P doped α-Fe2O3) in the standard light, which are 20.6 and 12.5 times higher than those of the undoped samples, respectively. Thus, they have the property of efficient photocatalytic water splitting. At the same time, we used SEM, TEM, XRD, UV-Vis, and Mott-Schottky testing methods, which are combined with the morphology and structure characterization, to study the property influence mechanism of photoelectrochemical water splitting of α-Fe2O3.

Key words: photoelectrochemical catalysis water splitting, α-Fe2O3, Co doping, P doping, nanostructured material

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