多孔Sr2MgSi2O7:Eu2+, Dy3+组装BiVO4储能自催化材料的研究

The project is aimed to prepare a new kind of photocatalysis material to work persistantlly especially in the darkness, which showed both energy storage and self-photocatalysis properties. The energy-storage and self-photocatalysis material that porous Sr2MgSi2O7:Eu2+, Dy3+@BiVO4 will be synthesized based on the energy-storage-luminescent characteristics and unique pore-structure of the porous Sr2MgSi2O7:Eu2+,Dy3+ and the outstanding visible light catalysis property of the monoclinic BiVO4. Through changing the ratio of the raw material,optimizing the crystalization conditions and selecting the proper asssembling process, a series of the target specimens will be sythesized. The mechanism of the sythesis, photocatalysis property and the energy transmission mechanism will be studied, and the model of "energy storage- energy transmission- photocatalysis" will be estabilished.

本课题以合成具有储能自催化功能的光催化材料，实现持续可见光催化为导向，基于多孔Sr2MgSi2O7:Eu2+, Dy3+的储能发光特性和特有的孔道结构以及单斜相BiVO4优良的可见光催化性能，通过调变原料配比、优化晶化条件以及选取合理的组装工艺，合成一系列新颖的具有特定结构及优异可见光催化性能的多孔Sr2MgSi2O7:Eu2+, Dy3+@BiVO4储能自催化材料，并探讨该体系材料的合成机理、光催化特性及能量转换机制，建立由“储能-传能-催化”构成的自催化过程的机理模型。

本课题以合成具有储能自催化功能的光催化复合材料，实现全天候持续光催化为导向，基于多孔Sr2MgSi2O7:Eu2+, Dy3+的储能发光特性和特有的孔道结构以及单斜相BiVO4优良的可见光催化性能，通过调变原料配比、优化晶化条件以及选取合理的组装工艺，合成了一系列新颖的具有特定结构及优异可见光催化性能的多孔Sr2MgSi2O7: Eu2+, Dy3+@BiVO4储能自催化材料，并探讨了该体系材料的合成机理、光催化特性及能量转换机制，建立了由“储能-传能-催化”构成的自催化过程的机理模型。项目研发的储能自催化新材料及相关技术实现了暗环境下光催化降解有机污染物功能，解决了光催化过程对光源依赖性问题，该项目成果已经在陶瓷釉料等产品初步应用，并有望进一步开展实用化工作。