| (SrTiO3)1-x(SrTaO2N)x固溶体的制备及光催化性能研究(英文) | |
| Preparation and Photocatalytic Characterization of (SrTiO3)1-x(SrTaO2N)x Solid Solution | |
| 摘要: 通过高温固相反应合成了N掺杂的SrTiO3和(SrTiO3)1-x(SrTaO2N)x固溶体，对其进行了X射线衍射，紫外可见吸收光谱，X射线光电子能谱分析和比表面积的表征。随x由0增大至0.4，固溶体带隙变窄，由3.2 eV降至2.3 eV，吸收光谱由紫外光区扩展到可见光区。在甲醇溶液(50 mL CH3OH+220 mL H2O)中进行了光催化分解水产生氢气的反应，在硝酸银溶液(270 mL，0.01 mol·L-1)中进行了光催化分解水产生氧气的反应，在可见光(λ＞420 nm)照射下，实现了可见光响应的光催化分解水。 | |
| 关键词: 固相法 固溶体 可见光 分解水 | |
| 基金项目: | |
| Abstract: N-doped SrTiO3 and (SrTiO3)1-x(SrTaO2N)x were prepared by a thermal ammonolysis method. The samples were characterized by XRD, UV-Vis spectroscopy, XPS spectroscopy and low temperature nitrogen adsorption-desorption. The unit cell edge length of (SrTiO3)1-x(SrTaO2N)x increases linearly and the band gaps reduce from 3.2 to 2.14 eV as x increases from 0 to 0.40. The photocatalytic activities of the samples were investigated in an aqueous suspension system. Aqueous methanol solution(50 mL CH3OH+220 mL H2O) for H2 evolution and aqueous silver nitrate solution(270 mL, 0.01 mol·L-1) for O2 evolution were used as sacrificial reagents. The samples show photocatalytic activities under visible light(λ＞420 nm) irradiation. | |
| Keywords: solid state method solid solution visible light water splitting | |
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| 李瑞璞,罗文俊,李朝升,于 涛,邹志刚.(SrTiO3)1-x(SrTaO2N)x固溶体的制备及光催化性能研究(英文)[J].无机化学学报,2010,26(1):149-152. | |
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