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中文摘要：
通过高温固相法,制备出V5＋掺杂的K2-xLa2Ti3-xVxO10（x=0～1.0）系列层状钙钛矿.采用X射线衍射、紫外可见漫反射光谱和比表面积对样品进行表征.研究K2-xLa2Ti3-xVxO10作为光催化剂在波长大于290 nm光辐射下,裂解水产生氢气的光催化活性,并讨论V5＋掺杂对层状钙钛矿K2La2Ti3O10光催化活性的影响.实验结果表明,适量掺杂的V5＋可有效地提高K2La2Ti3O10裂解水的光催化活性,450 W汞灯照射5 h后,1 g的K2-xLa2Ti3-xVxO10（x=0.1）光催化剂可催化分解甲醇溶液（体积分数为10%）产生氢气约16μmol.
英文摘要：
K2La2 Tia O10 （x=-0. 1- 1.0） was synthesized by high temperature solid state method. Then, the Powder X- ray diffraction pattern, UV-Vis diffuse reflectance spectrum and specific surface area measurements were carried out to characterize the samples. The influence of doping with V^5＋ ion on photocatalytic property of photoeatalyst was studied. Under irradiation with λ〉290 nm from a Hg lamp of 450 W for 5 h , about 16μmol hydrogen was produced form 1250mL methanol solution （10 %） containing l g of dispersed K1.9 La2 Ti2.9 V0.1O10. The results reveal that the photocatalytic property of K1.9 La2 Tie. 9 V0.1O10 is higher than other samples owing to the appropriately doping with Vs＋ ion.
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