摘要
ZnO具有强紫外吸收能力,同时具有较高的光催化性能,因此限制了其在紫外屏蔽领域的应用。为探究ZnO在紫外屏蔽领域应用的可能性,使用VASP软件构建纳米ZnO/CeO_(2)异质结,并对其进行了电子性能和光学性能的模拟计算;用木质素和纳米ZnO/CeO_(2)异质结,制备了木质素改性的纳米ZnO/CeO_(2)异质结;通过FT-IR、XRD、SEM、UV-Vis-DRS等手段对样品进行表征,并以亚甲基蓝为保护对象对样品的紫外屏蔽性能进行了考察。结果表明,木质素改性的纳米ZnO/CeO_(2)异质结在280~420 nm处的光吸收性能优于同等条件下合成的改性前ZnO/CeO_(2)异质结;当紫外光照射70 min时,木质素改性的纳米ZnO/CeO_(2)异质结的亚甲基蓝保留率为77.92%,表明所合成的样品是具有高紫外屏蔽性能、低光催化活性的紫外屏蔽材料。
ZnO has a strong UV absorption capacity,but also has a high photocatalytic performance,which limits its application in the field of UV shielding.In order to explore the possibility of ZnO's application in the field of ultraviolet shielding,this article uses VASP to construct a ZnO/CeO_(2)heterojunction and performs electronic and optical simulation calculations on it.Then lignin is used to combine with the synthesized ZnO/CeO_(2)heterojunction to prepare lignin-modified nano-ZnO/CeO_(2)heterojunction.Through the FT-IR,XRD,SEM,UV-Vis-DRS means the characterization of samples.The UV shielding properties of the synthesized samples were investigated with methylene blue as the protection object.The results show that the light absorption performance of the samples at 280~420 nm is better than that of ZnO/CeO_(2)samples.The retention rate of methylene blue for 70 min under UV irradiation was 77.92%,indicating that the synthesized sample was a UV shielding material with high UV shielding properties and low photocatalytic activity.
作者
宋悦
吴限
马诚
李丽华
SONG Yue;WU Xian;MA Cheng;LI Lihua(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)
出处
《辽宁石油化工大学学报》
CAS
2024年第3期10-16,共7页
Journal of Liaoning Petrochemical University
基金
辽宁省自然科学基金项目(201602404)。
