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通过无模板法一步合成了一种新型N掺杂石墨烯负载的CdS空心球复合材料.采用X射线衍射、透射电镜、红外光谱、紫外-可见光谱、N2吸附-脱附、荧光光谱和X射线光电子能谱等技术对该材料进行了表征,并在可见光照射下测试了其在降解亚甲基蓝和水杨酸中的光催化性能.结果表明,相对于氧化石墨烯负载硫化镉空心球和单独的硫化镉空心球,氮掺杂石墨烯负载的硫化镉空心球具有更高的光催化活性和稳定性.这是由于氮掺杂的石墨烯能充当优异的电子受体和传输体,从而抑制了载流子的复合.另外发现,羟基自由基是可见光下降解亚甲基蓝的主要活性物种.
A novel N-doped graphene-loaded CdS hollow spheres composite was synthesized by a template-free method using X-ray diffraction, transmission electron microscopy, infrared spectroscopy, UV-visible spectroscopy, N2 adsorption- desorption, fluorescence spectroscopy and X-ray Photoelectron spectroscopy and other techniques were used to characterize the material and its photocatalytic activity in degradation of methylene blue and salicylic acid was tested under visible light irradiation.The results showed that the photocatalytic activity of CdS hollow spheres loaded with graphene oxide Cadmium hollow spheres, nitrogen-doped graphene-loaded cadmium sulfide hollow spheres have higher photocatalytic activity and stability, because nitrogen-doped graphenes can act as excellent electron acceptors and transporters, It is also found that hydroxyl radical is the main active species that can degrade methylene blue in visible light.