摘要
采用草酸-氨水两步共沉淀法制备了ZnO以及Fe、Ni掺杂的Zn1-xMxO(0.00≤x≤0.06)纳米材料,利用XRD、UV-Vis、PL和VSM对其结构、光学和磁学性质进行表征与分析,并以亚甲基蓝溶液为模拟污染物,评价了Zn1-xMxO材料的光催化降解性能,考察Fe、Ni掺杂对ZnO结构、光学、磁学性质和光催化降解性能的影响。结果表明,所有的Zn1-xMxO样品都具有六方纤锌矿结构;Fe、Ni掺杂提高了ZnO的可见光吸收,且随着掺杂浓度的增加,Zn1-xMxO样品的带隙宽度减小;ZnO和Zn1-xMxO材料的光致发光主要有蓝光发射和绿光发射;Fe、Ni掺杂后的Zn1-xMxO样品表现出明显的室温铁磁性,随着掺杂浓度的增加,Zn1-xFexO的磁性增加,而Zn1-xNixO的磁性减小;Fe、Ni的掺杂浓度对ZnO的光催化降解性能产生较大的影响,高浓度掺杂反而降低了ZnO的光催化降解性能。
Fe/Ni doped ZnO nanoparticles(Zn1-xMxO(0.00≤x≤0.06))are synthesized by oxalate and ammonia co-precipitation method,with different Fe and Ni contents.The effects of Fe and Ni doping on the crystallite structure,optical and magnetic properties of ZnO are respectively characterized by XRD,UV-Vis,PL and VSM.The photocatalytic activities of Zn1-xMxO samples are evaluated via the degradation of methylene blue.Results indicate that the synthesized Zn1-xMxO nano-particles exhibit hexagonal wurtzite crystal structure.Fe and Ni doping has enhanced the absorption ability of ZnO to light in visible light region.In addition,the band gap of Zn1-xMxO nano-particles is observed to decrease with the increase of Fe and Ni percentages.The photoluminescence characteristics of Zn1-xMxO show blue emission and green emission peaks.Magnetic study assures Fe and Ni doped ZnO nanoparticle shows room temperature ferromagnetism and the magnetism increases with increasing Fe concentration,but decreases with increasing Ni concentration.The doping concentrations of Fe and Ni have a great impact on the photocatalytic activity of ZnO,and the photocatalytic tests show that over high doping concentrations of Fe and Ni will reduce the photocatalytic property of ZnO.
作者
潘会
胡轶
胡帅帅
PAN Hui;HU Yi;HU Shuai-shuai(School of Chemistry&Chemical Engineering,Xinjiang Normal University,Urumqi 830054,China)
出处
《现代化工》
CAS
CSCD
北大核心
2020年第7期136-140,共5页
Modern Chemical Industry
基金
新疆维吾尔自治区自然科学基金(2017D01A53)。
关键词
ZNO
掺杂
光学
磁学
光催化性能
ZnO
doping
optical
magnetism
photocatalytic property
