首页> 外文期刊>Materials Science and Engineering >Structural, optical, and improved photocatalytic properties of CdS/SnO_2 hybrid photocatalyst nanostructure
【24h】

Structural, optical, and improved photocatalytic properties of CdS/SnO_2 hybrid photocatalyst nanostructure

机译:CdS / SnO_2杂化光催化剂纳米结构的结构,光学和改进的光催化性能

获取原文
获取原文并翻译 | 示例
           

摘要

CdS, SnO_2 and CdS/SnO_2 hybrid photocatalyst nanostructure were synthesized using a two-step (co-pre cipitation/hydrothermal) method. The as-prepared materials were characterized by powder X-ray diffraction, transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), surface analysis (BET), photoluminescence spectra (PL), UV-Vis diffusion reflectance spectroscopy (DRS), fourier transform infrared spectroscopy (FT-IR), and photocatalytic activity. The band gap energies calculated from the DRS results are 3.30, 2.15, and 2.99 eV for pristine SnO_2, CdS, and the CdS/SnO_2 hybrid photocatalyst, respectively. The CdS/SnO_2 hybrid photocatalyst showed more efficient charge carrier separation and improved photocatalytic degradation of methyl orange (MO). The highest degradation rate constant was achieved for the CdS/SnO_2 hybrid photocatalyst (0.02434 mm~(-1)) compared to CdS (0.01381 min~(-1)) and SnO_2 (0.00878 min~(-1)). The present study provides insights for improving the photocatalytic activity and photo-stability of CdS/SnO_2 hybrid photocatalyst.
机译:采用两步法(共沉淀/水热法)合成了CdS,SnO_2和CdS / SnO_2杂化光催化剂纳米结构。通过粉末X射线衍射,透射电子显微镜(TEM),高分辨率透射电子显微镜(HRTEM),X射线光电子能谱(XPS),表面分析(BET),光致发光光谱(PL)对所制备的材料进行表征。 ),UV-Vis扩散反射光谱(DRS),傅立叶变换红外光谱(FT-IR)和光催化活性。从DRS结果计算出的原始SnO_2,CdS和CdS / SnO_2杂化光催化剂的带隙能量分别为3.30、2.15和2.99 eV。 CdS / SnO_2杂化光催化剂显示出更有效的电荷载流子分离和改善的甲基橙(MO)光催化降解。与CdS(0.01381 min〜(-1))和SnO_2(0.00878 min〜(-1))相比,CdS / SnO_2杂化光催化剂的降解速率常数最高(0.02434 mm〜(-1))。本研究为改善CdS / SnO_2杂化光催化剂的光催化活性和光稳定性提供了见识。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号