铬和钼掺杂对HCa2Nb3O10/Pt光催化性能的影响

doi:10.7517/j.issn.1674-0475.2007.01.57

影像科学与光化学 ›› 2007, Vol. 25 ›› Issue (1): 57-62.DOI: 10.7517/j.issn.1674-0475.2007.01.57

铬和钼掺杂对HCa₂Nb₃O₁₀/Pt光催化性能的影响

谢艳梅, 吴季怀, 林建明, 黄妙良, 黄昀, 李毅斌

华侨大学, 材料物理化学研究所, 福建, 泉州, 362021

收稿日期:2006-05-29 修回日期:2006-07-10 出版日期:2007-01-23 发布日期:2007-01-23
通讯作者: 吴季怀(1958-), 男, 主要从事功能材料的研究.
基金资助:
国家自然科学基金(50572030,50372022)

Photocatalytic Activity of HCa₂Nb₃O₁₀/Pt Doped with Cr³⁺and Mo⁶⁺

XIE Yan-mei, WU Ji-huai, LIN Jian-ming, HUANG Miao-liang, HUANG Yun-fang, LI Yi-bin

Institute of Materials Physical Chemistry, Huaqiao University, Quanzhou 362021, Fujian, P.R.China

Received:2006-05-29 Revised:2006-07-10 Online:2007-01-23 Published:2007-01-23

摘要/Abstract

摘要： 通过高温固相反应合成了铌酸盐KCa₂Nb₃O₁₀及Cr³⁺和Mo⁶⁺掺杂(摩尔分数5%)的KCa₂Nb₃O₁₀,并通过离子交换反应制备出HCa₂Nb₃O₁₀及Cr³⁺和Mo⁶⁺掺杂的HCa₂Nb₃O₁₀,采用X射线衍射、原子吸收光谱、扫描电镜等对所制得的样品进行了表征.在甲醇为电子给体、Pt为助催化剂的情况下,研究了催化剂HCa₂Nb₃O₁₀及Cr³⁺和Mo⁶⁺掺杂的HCa₂Nb₃O₁₀在紫外光辐射下分解水产氢的光催化活性,并讨论了引起催化剂活性差异的原因.

关键词: HCa₂Nb₃O₁₀, 光催化, 掺杂, 氢气

Abstract: Photocatalysts HCa₂Nb₃O₁₀ and HCa₂Nb₃O₁₀ doped with Cr³⁺ and Mo⁶⁺ were prepared by solid-state reaction followed by an ion-exchange reaction.The samples were characterized by powder X-ray diffraction,UV-Vis diffuse reflectance spectrum and scan electron microscope.The photocatalytic activities of HCa₂Nb₃O₁₀ and HCa₂Nb₃O₁₀ doped with Cr³⁺ and Mo⁶⁺ were evaluated by photocatalytic water-splitting for hydrogen production with methanol as electron donor and Pt as promoter catalyst under UV irradiation with wavelength more than 290 nm.The difference of photocatalytic activity among them was also discussed.

Key words: HCa₂Nb₃O₁₀, photocatalysis, doping, hydrogen

中图分类号:

O643

谢艳梅, 吴季怀, 林建明, 黄妙良, 黄昀, 李毅斌. 铬和钼掺杂对HCa₂Nb₃O₁₀/Pt光催化性能的影响[J]. 影像科学与光化学, 2007, 25(1): 57-62.

XIE Yan-mei, WU Ji-huai, LIN Jian-ming, HUANG Miao-liang, HUANG Yun-fang, LI Yi-bin. Photocatalytic Activity of HCa₂Nb₃O₁₀/Pt Doped with Cr³⁺and Mo⁶⁺[J]. Imaging Science and Photochemistry, 2007, 25(1): 57-62.

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铬和钼掺杂对HCa₂Nb₃O₁₀/Pt光催化性能的影响

Photocatalytic Activity of HCa₂Nb₃O₁₀/Pt Doped with Cr³⁺and Mo⁶⁺

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