Singh Rajinder, Kumar Manesh, Khajuria Heena, Ladol Jigmet, Sheikh Haq Nawaz
Acta Chim Slov. 2018 Jun;65(2):319-327. doi: 10.17344/acsi.2017.3988.
A facile one step solvothermal method is designed for the synthesis of visible light-sensitive ZnO-nitrogen doped graphene (ZNG) nano photocatalysts using ethylene glycol as a solvent as well as an agent to prevent aggregation of graphene layers. The deposition of ZnO nanoparticles onto the NG layers was confirmed by high resolution transmission electron microscope (HR-TEM), scanning electron microscope (SEM), powder X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). UV-Vis spectroscopy (UV-Vis) was used to study the enhanced photocatalytic activity, which shows the red-shift of the band-edge as compared to ZnO nano particles. The enhancement in photocatalytic activity is possibly due to the synergistic effect of improved adsorptivity of dyes, enhanced visible light absorption and effective charge separation.
设计了一种简便的一步溶剂热法，以乙二醇为溶剂和防止石墨烯层聚集的试剂，用于合成可见光敏感的ZnO-氮掺杂石墨烯（ZNG）纳米光催化剂。通过高分辨率透射电子显微镜（HR-TEM）、扫描电子显微镜（SEM）、粉末X射线衍射（XRD）和傅里叶变换红外光谱（FTIR）确认了ZnO纳米颗粒在NG层上的沉积。采用紫外-可见光谱（UV-Vis）研究了增强的光催化活性，结果表明与ZnO纳米颗粒相比，带边出现红移。光催化活性的增强可能归因于染料吸附性提高、可见光吸收增强和有效电荷分离的协同效应。
