摘要
通过微波辅助热解分别制备了g-C3N4及S掺杂g-C3N4催化材料,采用N2保护法合成了S掺杂g-C3N4催化材料。利用X射线粉末衍射仪(XRD)、透射电镜(TEM)、紫外可见漫反射(UV-Vis DRS)、傅里叶红外光谱(FTIR)及X射线光电子谱(XPS)对样品进行了表征,并分析了材料对孔雀石绿废水的光催化降解效果。结果表明,微波辅助热解制备的S掺杂g-C3N4光催化降解效果最佳。对质量浓度为10mg/L的孔雀石绿废水在投加S掺杂gC3N4为1g/L的条件下,经过3h光照对孔雀石绿的降解可达90%。
S-doped g-C3N4 and g-C3N4 were successfully prepared via microwave-assisted pyrolysis.S-doped g-C3N4 was successfully prepared via N2 protection method.The samples were characterized by X-ray diffraction(XRD),transmission electron microscope(TEM),UV-visible diffuse reflection spectroscopy(UV-vis DRS),Fourier transform infrared spectroscopy(FT-IR)and X-ray photo-electron spectrometer(XPS).And photocatalytic activity of materials were investigated by degradation of malachite green wastewater.The results indicated that the s-doped g-C3N4 fabricated by microwave-assisted pyrolysis exhibited the highest photocatalytic activity.Under malachite green wastewater(10mg/L)and S-doped g-C3N4 addition amount(1g/L)condition,more than 90% of malachite green was degraded over the photocatalyst after 3h.
引文
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