Visible light-induced Cr-doped SrTiO3-g-C3N4 composite for improved photocatalytic performance
Visible light-induced Cr-doped SrTiO3-g-C3N4 composite for improved photocatalytic performance
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DOI：
10.1007/s11595-014-1051-z
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发表时间：
2014-12
期刊：
影响因子：
--
通讯作者：
Ming-Meng Yang;Xiaoqi Jin
中科院分区：
文献类型：
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作者：
Ming-Meng Yang;Xiaoqi Jin
通过引入聚合物 g-C3N4 合成了新型可见光诱导 Cr 掺杂 SrTiO3-g-C3N4 复合光催化剂。通过X射线衍射（XRD）、高分辨率透射电子显微镜（HRTEM）、傅里叶变换红外（FT-IR）光谱、紫外-可见漫反射光谱、光致发光（PL）光谱和BET表面积测量对复合光催化剂进行了表征。以甲基橙（MO）为目标污染物评价新型复合光催化剂的光催化氧化能力。光催化剂在降解MO方面表现出显着增强的光催化性能。确定了复合光催化剂光降解活性的最佳g-C3N4含量。由于界面处光生电子-空穴分离的增强，所制备的复合光催化剂表现出改善的光催化活性。
Novel visible light-induced Cr-doped SrTiO3-g-C3N4composite photocatalysts were synthesized by introducing polymeric g-C3N4. The composite photocatalyst was characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared (FT-IR) spectroscopy, UV-vis diffuse reflection spectroscopy, photoluminescence (PL) spectroscopy and BET surface area measurements. The photocatalytic oxidation ability of the novel composite photocatalyst was evaluated using methyl orange (MO) as a target pollutant. The photocatalysts exhibited a significantly enhanced photocatalytic performance in degrading MO. The optimal g-C3N4content for the photodegradation activity of the composite photocatalysts was determined. The as-prepared composite photocatalyst exhibits an improved photocatalytic activity due to enhancement of photo-generated electron-hole separation at the interface.