Sn掺杂对氧空位型&alpha;-Fe2O3纳米颗粒光解水性能的影响

CORC > 厦门大学 > 2017年第23卷

	Sn掺杂对氧空位型α-Fe2O3纳米颗粒光解水性能的影响; Sn-Doped α-Fe2O3 Photocatalyst containing Oxygen Vacancy for Water-splitting
	王祖华 ; 钮东方 ; 李辉成 ; 杜荣斌 ; 徐衡 ; 张新胜 ; Wang Zu-hua ; Niu Dong-fang ; Li Hui-cheng ; Du Rong-bin ; XU Heng ; Zhang Xin-sheng
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract10290.shtml
	2017-02-28
关键词	&alpha -Fe2O3 Sn掺杂氧空位表面反应速率 &alpha -Fe2O3 photocatalyst oxygen vacancy Sn doping surface reaction rate
英文摘要	在退火前未抽真空条件下，采用滴涂法在常压氮气氛围中退火制备了含氧空位的α-Fe2O3纳米颗粒. 通过在空气和氮气氛围中退火和向前驱体溶液直接加入SnCl4制备α-Fe2O3的方法研究了Sn掺杂对氧空位型α-Fe2O3纳米颗粒光催化性能的影响. 结果表明，氮气氛围中退火Sn掺杂得到的α-Fe2O3在1.23V vs. RHE时的电流密度分别是氮气氛围中退火未掺杂α-Fe2O3的35倍和空气氛围中退火Sn掺杂α-Fe2O3的15倍，氮气氛围中退火和掺杂被证明是获得高催化性能必不可少的条件. Mott-Schottky曲线和交流阻抗谱表明，掺杂和氧空位能增大催化剂的载流子浓度的电导率. 在牺牲剂溶液中测试发现，Sn掺杂导致材料的表面反应速率提高是催化剂活性的重要影响因素.; The α-Fe2O3 nanoparticles containing oxygen vacancies were synthesized in atmospheric N2 by dip-dropping method without a high vacuum employed before annealing. The influences of annealing atmosphere and Sn-doping on the photocatalytic performance of α-Fe2O3 nanoparticles were studied by annealing the photocatalyst in N2 or air and adding SnCl4 to the precursor directly. The results showed that the current density of Sn-doping α-Fe2O3 annealed in N2 at 550 °C and 1.23 V (vs. RHE) was 35 times greater than that of pristine α-Fe2O3 annealed in N2 at 550 °C and 15 times greater than that of Sn-doping α-Fe2O3 annealed in air at 550 °C, which indicated that both Sn-doping and annealing in N2 were indispensible to obtain a good performance for α-Fe2O3 nanoparticles. Mott-Schottky curves and electrochemical impedance spectroscopic data proved that both Sn-doping and oxygen vacancy could lead to the increase of the donors concentration and conductivity, which resulted in the enhanced performance of α-Fe2O3 nanoparticles. The photocatalytic performance tested in the electrolyte containing sacrifice solvent confirmed that the Sn-doping could facilitate the surface reaction, which was another key factor contributed to the enhanced performance of α-Fe2O3 nanoparticles.; 国家自然科学基金项目（21303053）和化学工程联合国家重点实验室开放基金(SKLChE-14C02)资助; 作者联系地址：1.华东理工大学化学工程联合国家重点实验室上海 200237； 2.石油化工新材料协同创新中心安徽安庆 246011; Author's Address: 1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, 2. Collaborative Innovation Center for Petrochemical New Materials, Anqing 246011, Anhui; 通讯作者E-mail：xszhang@ecust.edu.cn
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dx.doi.org/10.13208/j.electrochem.160412]
专题	2017年第23卷
推荐引用方式 GB/T 7714	王祖华,钮东方,李辉成,等. Sn掺杂对氧空位型α-Fe2O3纳米颗粒光解水性能的影响, Sn-Doped α-Fe2O3 Photocatalyst containing Oxygen Vacancy for Water-splitting[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract10290.shtml,2017.
APA	王祖华.,钮东方.,李辉成.,杜荣斌.,徐衡.,...&Zhang Xin-sheng.(2017).Sn掺杂对氧空位型α-Fe2O3纳米颗粒光解水性能的影响.http://electrochem.xmu.edu.cn/CN/abstract/abstract10290.shtml.
MLA	王祖华,et al."Sn掺杂对氧空位型α-Fe2O3纳米颗粒光解水性能的影响".http://electrochem.xmu.edu.cn/CN/abstract/abstract10290.shtml (2017).