以硝酸锌为锌源,柠檬酸为燃烧剂,采用燃烧合成法制备了掺杂铒(Er)的纳米氧化锌(ZnO)(Er-ZnO),并对样品进行了测试。考察了不同Er-ZnO在紫外光照条件下催化降解罗丹明B的效率。结果表明:制得的ZnO为六边纤锌矿,粒径为50～300nm的多面体颗粒,并组合成多孔块体,Er用量为0.8%(wt,质量分数)的Er-ZnO经700℃煅烧3h后的光催化效果最佳,在Er-ZnO用量为0.5g,紫外光照3h,120mL罗丹明B浓度为0.02g/L,溶液 pH=9条件下,对罗丹明B的降解率达到92.4%。
Er-doped ZnO nanoparticles (Er-ZnO) were synthesized using zinc nitrate as zinc source and citric acid as combustion agent via combustion synthesis method,and were tested.The photocatalytic activity of different Er-ZnO toward the degradation of Rhodamine B were studied under ultraviolet light.The results showed that ZnO possessed hexagonal wurtzite structure,presented polyhedral particle with size of 50～300nm,which combined into porous blocks.The 0.8% (wt,mass fraction) Er-doped ZnO calcinated at 700℃ for 3h exhibited the highest photocatalytic ability,and the degradation rate of 0.5g sample to rhodamine B solution (0.02g/L,pH=9) reached 92.4% under UV irradiation for 3h.
[1] Phuruangrat A,Kongpet W,Yayapao O,et al.Ultrasonic-assisted synthesis,characterization,and optical properties of Sb doped ZnO and their photocatalytic activities[J].Journal of Nanomaterials,2014,2014(8):1-10.
[2] Manikandan A,Manikandan E,Meenatchi B,et al.Rare earth element (REE) lanthanum doped zinc oxide (La∶ZnO) nanomaterials:synthesis structural optical and antibacterial studies[J].Journal of Alloys and Compounds,2017,723:1155-1161.
[3] Kennedy J,Murmu P P,Leveneur J,et al.Enhanced power factor and increased conductivity of aluminum doped zinc oxide thin films for thermoelectric applications[J].Journal of Nanoscience and Nanotechnology,2018,18(2):1384-1387.
[4] 戚丽,俞杭丽,吴世军,等.Nd掺杂ZnO纳米棒的制备及其光催化性能的研究[J].上饶师范学院学报,2015,35(6):52-56.
[5] 戚丽,郭大政,邹如意,等.Er掺杂纳米ZnO的制备及紫外光催化降解罗丹明B[J].电子元件与材料,2015,34(8):13-17.
[6] Kajbafvala A,Ghorbani H,Paravar A,et al.Effects of morphology on photocatalytic performance of zinc oxide nanostructures synthesized by rapid microwave irradiation methods[J].Superlattices and Microstructures,2012,51(4):512-522.
[7] 乔梅英,谷永庆.溶胶-凝胶法制备纳米氧化锌及其光催化性能[J].光谱实验室,2012,29(2):1238-1240.
[8] 韩帅,王海芳,侯彬,等.水热合成法制备光催化剂氧化锌及光催化降解效果研究[J].化工新型材料,2015,43(1):173-175,181.
[9] 魏素凤.氧化锌薄膜与纳米棒的制备及其光学性能的研究[D].长春:吉林大学,2009.
[10] 蒋金芝,唐有根,彭小刚.柠檬酸锌的合成与结构分析[J].化学反应工程与工艺,1997,13(1):73-77.
[11] 陈姗姗.纳米氧化锌复合粉体的制备及其光催化性能的研究[D].济南:山东师范大学,2010.
[12] 徐松梅.双元素掺杂TiO2粉体及薄膜的光催化及抗菌性能研究[D].长沙:湖南大学,2009.
[13] 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.
[14] Anandan S,Vinu A,Lovely K L P S,et al.Photocatalytic activity of La-doped ZnO for the degradation of monocrotophos in aqueous suspension[J].Journal of Molecular Catalysis A(Chemical),2007,266(1/2):149-157.
基金资助
国家自然科学基金资助项目(21561028);江西省塑料制备成型重点实验室开放课题(jxsr201602、jxsr201704);上饶师范学院校级课题(201601、201502);上饶师范学院大学生科技课题(2016dxs30)
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