光催化
煅烧
甲基橙
材料科学
十二面体
金属
氧化物
化学工程
复合材料
纳米颗粒
金属有机骨架
催化作用
纳米技术
冶金
化学
吸附
有机化学
结晶学
工程类
作者
Hang-bo Zheng,Di Wu,Yuan-Li Wang,Xiaopan Liu,Pengzhao Gao,Wei Liu,Jin‐Kun Wen,E.V. Rebrov
标识
DOI:10.1016/j.jallcom.2020.155219
摘要
A new approach was proposed for the preparation of metal–organic framework/metal oxide composites in one step using only metal salts. Here, crystalline rhombohedral dodecahedron ZIF-8, hollow ZnO microsphere, and ZIF-8/ZnO composites were obtained in different one-pot solvothermal processes where the growth toward individual ZIF-8 and ZnO phases and toward ZIF-8/ZnO composites was controlled by adjusting the ratio of metal salts to 2-methylimidazole. Subsequently, a series of derived (C and/or N)-doped ZnO nanoparticles was obtained by a two-step calcination process. The absorption kinetics and photocatalytic activity in methyl orange degradation under visible light were investigated. ZIF-8-derived ZnO could maintain their original morphology and displayed excellent photocatalytic activity 10 times higher than that of the original ZIF-8.
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