不同方法制备ZnO材料的光降解性能研究
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摘要
采用三种不同的方法,制备了微纳米ZnO材料,对最佳性能的ZnO进行了掺Ce研究。通过XRD,IR,SEM,XPS,表面和孔径分析仪和紫外可见吸收光谱手段对ZnO材料进行了表征。以亚甲基蓝为模拟污染物,考察了不同方法制备的ZnO的光催化性能,并研究了降解动力学参数变化。结果表明:制备的ZnO-C的光催化性能最好,结构均匀,且具有一定的稳定性。在紫外光下13min对MB溶液的降解能力:ZnO-C>ZnO-B>ZnO-A,对ZnO-C掺铈没有增加光催化活性。制备ZnO-C方法特点是:工艺简单,短时间降解率高,回收利用效果好。
Nanometer ZnO materials were prepared by three different methods.The properties of ZnO with the best photocatalytic properties was studied by Ce doping.The ZnO materials were characterized by XRD,IR,SEM,XPS,surface and pore size analyzer and UV-vis absorption spectra.The photocatalytic properties of ZnO prepared by different methods were investigated with methylene blue as the simulated pollutant,and the degradation kinetics parameters were calculated.The results show that the prepared ZnO-C has the best photocatalytic activity,uniform structure and certain stability.The degradation ability to MB solution is:ZnO-C>ZnO-B>ZnO-A when time is 13 min in ultraviolet light,and photocatalytic activity of cerium doped ZnO-C did not increase.The prepared ZnO-C is characterized by simple process,high degradation rate in short time,and good recovery and utilization effect.
Nanometer ZnO materials were prepared by three different methods.The properties of ZnO with the best photocatalytic properties was studied by Ce doping.The ZnO materials were characterized by XRD,IR,SEM,XPS,surface and pore size analyzer and UV-vis absorption spectra.The photocatalytic properties of ZnO prepared by different methods were investigated with methylene blue as the simulated pollutant,and the degradation kinetics parameters were calculated.The results show that the prepared ZnO-C has the best photocatalytic activity,uniform structure and certain stability.The degradation ability to MB solution is:ZnO-C>ZnO-B>ZnO-A when time is 13 min in ultraviolet light,and photocatalytic activity of cerium doped ZnO-C did not increase.The prepared ZnO-C is characterized by simple process,high degradation rate in short time,and good recovery and utilization effect.
引文
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[3]马歌.ZnO纳米线的研究应用及进展[J].激光杂志,2016,37(10):1-5.
[4]党民团,刘展晴.纳米氧化锌应用技术研究进展[J].化学工程师,2018,32(05):63-65
[5]Lv Y ,Yu L,Li C et al.ZnO nanopowders and their excellent solar light/UV photocatalytic activity on degradation of dye in wastewater[J].Science China Chemistry,2016,59(1):142-149.
[6]荣华,王富美,王岁.微/纳米ZnO绒球的制备及对混合污水的光降解[J].石油化工高等学校学报,2015,28(1):7-11.
[7]佟拉嘎,欧阳萍,马小丽,等.微/纳米ZnO 绒球的制备及光催化降解有机染料[J].功能材料,2015,46(6):0620-0624.
[8]潘荣飞,郑兴芳.稀土 Ce 掺杂 ZnO 光催化剂的制备及研究[J].广东化工,2017,44(7):35-47.
[9]郎集会,吴思,王勇.纳米ZnO 材料的合成及其光催化应用[J].吉林师范大学学报(自然科学版),2018,39(1):30-35.
[10]孟甲.ZnO纳米材料液相法合成与表征[D].山西:太原理工大学,2014.
[11]Manikandan B,Tamio E,Satoru K,et al.Properties of sol gel synthesized ZnO nanoparticles[J].Journal of Materials Science:Materials in Electronics,2018,29(11):9474-9485
[12]Qu J,Zhu Y,Chen Z,et al.Synthesis of ZnO nanomaterials with controlled morphology and their photoelectrochemical properties[J].Russian Journal of Physical Chemistry A,Focus on Chemistry,2016,90(8):1621-1627.
[13]李耀.金属有机骨架材料ZIF-8的制备及吸附性能研究[D].北京交通大学,2015.
[14]顾桂山,张园园,黄驰,等.铈掺杂纳米ZnO的制备及光催化降解染料废水[J].常熟理工学院学报,2014,28(04):55-61.
[15]黄艳芹.超声协同纳米ZnO光催化降解亚甲基蓝研究[J].河南师范大学学报(自然科学版),2012,40(05):106-109.
[16]武志富,李素娟.氢氧化锌和氧化锌的红外光谱特征[J].光谱实验室,2012,29(04):2172-2175.
[17]余长林,杨凯,余济美,等.稀土Ce掺杂对ZnO结构和光催化性能的影响[J].物理化学学报,2011,27(02):505-512.
[18]于翔鹏,傅佳佳,王鸿博.碱沉淀法制备Ce掺杂ZnO及其光催化性能[J].材料科学与工程学报,2015,33(04):591-594+624.