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中文摘要：
通过高温固相反应制备铬掺杂的钙铌酸钾系列样品，并用离子交换反应制备出对应的铬掺杂钙铌酸样品．采用X-射线衍射、紫外一可见漫反射光谱、扫描电镜等方法，对所制得的样品进行表征．在甲醇为电子给体，Pt为助催化剂的情况下，研究铬掺杂的钙铌酸系列催化剂，在波长大于290nm紫外光辐射下分解水产氢的光催化活性．结果表明，适量的掺杂铬可有效地提高钙铌酸的光催化分解水的活性．最后，讨论引起催化剂活性差异的可能原因．
英文摘要：
The photocatalysts series HCa2Nb3O10 doped with Cr^3＋ were prepared by conventional solid-state reactions followed by an ion-exchange reaction. The samples were characterized by powder X-ray diffraction, UV-Vis diffusive reflectance spectrum and scanning electron microscope. The photocatalytic activities of HCa2 Nb3O10 doped with Cr^3＋ are investigated with methanol as electron donor and Pt as promoter catalyst under irradiation of UV light with wavelength more than 290 nm. The results show that the doping of Cr^3＋ improves the photocatalytic activity of HCa2 Nb3O10, the difference of photocatalytic activity among them is also discussed.
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