In the present endeavour, SnO2 nanoparticles (NPs) were synthesized using microwave method. Synthesized SnO2 NPs were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersi...In the present endeavour, SnO2 nanoparticles (NPs) were synthesized using microwave method. Synthesized SnO2 NPs were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectrscopy (EDS) to find their structure, morphology and elemental composition. SnO2 NPs were of spherical morphology having crystallite size of 35.42 nm as obtained from Scherrer’s formula using most intense peak of XRD. Synthesized NPs were used for photodegradation of melthylene blue (MB) dye under UV light. The SnO2 NPs ware found to have photodegradation efficiency and apparent rate constant of 55.97% and 2.149 × 10_2 respectively.展开更多
文摘In the present endeavour, SnO2 nanoparticles (NPs) were synthesized using microwave method. Synthesized SnO2 NPs were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectrscopy (EDS) to find their structure, morphology and elemental composition. SnO2 NPs were of spherical morphology having crystallite size of 35.42 nm as obtained from Scherrer’s formula using most intense peak of XRD. Synthesized NPs were used for photodegradation of melthylene blue (MB) dye under UV light. The SnO2 NPs ware found to have photodegradation efficiency and apparent rate constant of 55.97% and 2.149 × 10_2 respectively.
文摘利用污水处理厂未消化脱水污泥,采用二氧化锰为催化剂,磷酸为活化剂,通过微波辐照工艺制备了掺锰污泥活性炭,研究了掺锰污泥活性炭对酸性湖蓝A的吸附效果。实验结果表明,掺锰污泥活性炭对初始质量浓度为30 mg/L的酸性湖蓝A的最佳吸附条件为:吸附时间60 m in,掺锰污泥活性炭加入量4 g/L,溶液pH值7,在此条件下,酸性湖蓝A吸附率达99.4%。对不同浓度的酸性湖蓝A进行了动力学研究,由线性相关系数可知:伪二级动力学方程能很好地描述掺锰污泥活性炭对酸性湖蓝A的吸附过程。说明伪二级动力学模型包含吸附的所有过程,能够更真实地反映酸性湖蓝A在掺锰污泥活性炭上的吸附机理。实验结果为污水处理厂污泥的资源化利用提供了理论基础。
