Fu Ning, Ren Xue-Chang
School of Environmental & Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, China.
Gansu Environmental Monitoring Center, Lanzhou, China.
Front Chem. 2020 Oct 23;8:578847. doi: 10.3389/fchem.2020.578847. eCollection 2020.
Synthesis of semiconductor-MOF heterostructure photocatalysts has attracted considerable attention for their thermal stability, controllable crystallinity, and enhanced photocatalytic activity. In this work, the hollow nanostructure of anatase TiO was prepared by etching SiO from core-shell SiO@TiO nanoparticles. ZIF-8, one of the metal-organic frameworks (MOFs), was hybrid synthesized on the surface of hollow TiO and formed double-shell hollow nanoparticles. The photocatalytic activity of the double-shell hollow TiO@ZIF-8 nanoparticles toward methylene blue (MB) under UV light irradiation was processed, and the highest photocatalytic efficiency of 99.1% was shown compared with TiO and SiO@TiO nanoparticles. This study suggests a promising approach to achieve an advanced photocatalytic performance toward dye degradation using MOFs for the surface engineering of semiconductors.
半导体-金属有机框架（MOF）异质结构光催化剂的合成因其热稳定性、可控结晶度和增强的光催化活性而备受关注。在这项工作中，通过从核壳SiO@TiO纳米颗粒中蚀刻SiO制备了锐钛矿TiO的中空纳米结构。金属有机框架（MOF）之一的ZIF-8在中空TiO表面进行杂化合成，形成了双壳中空纳米颗粒。研究了双壳中空TiO@ZIF-8纳米颗粒在紫外光照射下对亚甲基蓝（MB）的光催化活性，与TiO和SiO@TiO纳米颗粒相比，其光催化效率最高可达99.1%。该研究表明，利用MOF对半导体进行表面工程以实现对染料降解的先进光催化性能是一种很有前景的方法。
