The characteristics and photocatalytic activities of silver doped ZnO nanocrystallites

Ronghua Wang, John Haozhong Xin, Yang Yang, Hongfang Liu, Liming Xu, Junhui Hu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

238 Citations (Scopus)

Abstract

Silver ions doped ZnO nanocrystallites were synthesized from the precursor of Ag-doped Zn5(CO3)2(OH)6applying hybrid induction and laser heating (HILH) techniques. The physical properties of prepared nanoparticles were characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray diffraction (XRD) and UV-Vis methods. The results of the photocatalytic degradation of methylene blue (MB) and phenol in aqueous suspensions showed that silver ions doping greatly improved the photocatalytic efficiency of ZnO nanocrystallites. This was attributed to the change of surface properties of metal ions doped semiconductor, such as O vacancies, crystal deficiencies, and increased specific surface area (SSA). Increasing the amount of silver ions resulted in increased lattice deficiency and hence enhanced the photocatalytic activity. The quantum confinement of silver ions doped ZnO nanocrystallites was also investigated in this study.
Original languageEnglish
Pages (from-to)312-317
Number of pages6
JournalApplied Surface Science
Volume227
Issue number1-4
DOIs
Publication statusPublished - 15 Apr 2004

Keywords

  • Doping
  • HILH
  • Oxygen vacancy
  • Photocatalytic
  • Quantum confinement

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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