Structural characterization of Ce-ZnO nanomaterials and photocatalytic degradation of rhodamine B dye

doi:10.14088/j.cnki.issn0439-8114.2020.01.026

Abstract

Abstract: Ce-doped nano ZnO nanomaterials were prepared by doping rare earth element Ce with nano-ZnO which prepared by pyrolysis at high temperature, and the structural characteristics and element composition of the materials was characterized by X-ray diffraction （XRD） and energy dispersive spectroscopy （EDS）. The effects of Photocatalytic Degradation of Dye RhB Catalyzed by Ce-ZnO was researched in Rhodamine B （RhB） dye as a single sewage system. The result of phase analysis of xray diffraction indicated that the Ce-ZnO catalyst has six crystal wurtzite type structure characteristic diffraction peak and had a diffraction peak of CeO₂. The result of energy spectrum showed that the mass ratio of Ce and Zn is 1∶23.88. Photocatalytic degradation of RhB by Ce-ZnO followed the first-orderkinetics, In natural light, the apparent rate constant of RhB degradation catalyzed by nano-material Ce-ZnO is 0.039 8, which is greater than the apparent rate constant under ultraviolet light （0.024 0）. It indicated that doping rare earth element Ce could effectively improve the catalytic degradation of RhB by nano-ZnO under natural light.

Key words: nano-ZnO, Ce doping, photocatalysis, rhodamine B, structural characteristics, kinetics

CLC Number:

X703

XU Jia-hao, CHEN Rou-lin, YANG Shu-yi, LI Meng-jie, SONG Ru, YU Qun-di. Structural characterization of Ce-ZnO nanomaterials and photocatalytic degradation of rhodamine B dye[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(1): 119-122.

References 15

[1]	武立州,祁丹,尹义隆.纳米氧化锌的合成工艺研究[J].云南化工,2018,45(8):12-14.
[2]	王元有. ZnO基光催化材料的制备及其性能研究[D].江苏扬州:扬州大学,2016.
[3]	王兴光. 纳米氧化锌复合材料制备和光催化性能研究[D].黑龙江大庆:东北石油大学,2018.
[4]	王玉新,童荧莹,傅鹏炜,等.铁掺杂纳米ZnO的制备及其光催化降解染料废水的研究[J].化工科技,2016,24(4):31-34.
[5]	AHMAD M,AHMED E,HONG Z L,et al.Structural,optical and photocatalytic properties of hafnium doped zinc oxide nanophotocatalyst[J].Ceramics international,2013,39(8):8693-8700.
[6]	郑继东,陆泉芳,俞洁,等.辉光放电电解等离子体降解水体中的罗丹明B[J].环境科学学报,2017,37(6):2164-2170.
[7]	许丽梅,康靖,曾勇明,等.SERS技术应用于食品中罗丹明B的快速检测[J].食品工业科技,2017,38(24):238-242,247.
[8]	VENNA S R,JASINSKI J B,CARREON M A.Structural evolution of zeolitic imidazolate framework-8[J].Journal of the american chemical society,2010,132(51):18030-18033.
[9]	VENNA S R,CARREON M A.Highly permeable zeolite imidazolate framework-8 membranes for CO2/CH4 separation[J].Journal of the american chemical society,2010,132(1):76-78.
[10]	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(2):505-512.
[11]	王凯乾,曾艳,陈荣生,等.罗丹明B修饰金纳米星构建检测Zn~(2+)的荧光传感器[J].分析科学学报,2018,34(4):549-552.
[12]	MOHAN A C,RENJANADEVI B.Preparation of zinc oxide nanoparticles and its characterization using scanning electron microscopy (SEM) and X-ray diffraction(XRD)[J].Procedia technology,2016,24(4):761-766.
[13]	薛涛,曾舒,毛键,等.稀土铈掺杂纳米氧化锌的结构及光催化性能研究[A].2006年全国功能材料学术年会专辑[C].重庆:中国仪器仪表学会仪表材料分会,2006.
[14]	沈文浩,刘天龙,李翠翠,等.TiO2胶体光催化降解罗丹明B染料[J].环境工程学报,2012,6(6):1863-1870.
[15]	张转芳,唐林,孙立,等.CuS/GO纳米复合材料的制备及光催化降解性能[J].精细化工,2019,36(2):62-67.