One-step synthesis of ZIF-8/ZnO composites based on coordination defect strategy and its derivatives for photocatalysis

Hang bo Zheng, Di Wu, Yuan li Wang, Xiao pan Liu, Peng zhao Gao, Wei Liu, Jin Wen, Evgeny V. Rebrov

Research output: Contribution to journalArticleAcademicpeer-review

71 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number155219
JournalJournal of Alloys and Compounds
Volume838
DOIs
Publication statusPublished - 15 Oct 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

  • C, N co-doped
  • Organic dyes
  • Photocatalysis
  • Porous structure
  • ZIF-8/ZnO composites

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