Study on Ag(I) Loaded ZIF-8 and Ag(I) Ion Release in Artificial Seawater

From a porous structure perspective, the one-stage de novo synthesis method and impregnation method were applied to synthesize Ag(I) ion-containing ZIF-8 samples. With the de novo synthesis method, Ag(I) ions could be located inside micropores or adsorbed on the external surface of the ZIF-8 by sele...

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Published inMaterials Vol. 16; no. 5; p. 2040
Main Authors Tsai, Shang-Tien, Tang, Wei-Cheng, Wei, Yeu-Kuen, Wu, Kevin C-W
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 01.03.2023
MDPI
Subjects
Ammonia
Antimicrobial agents
Catalysis
Chemical synthesis
Chloride
Corrosion
de novo synthesis
Diffusion rate
metal-organic frameworks
Pore size
Porous materials
Potassium
Seawater
Silver
Silver nitrate
silver release
Sodium
ZIF-8
Zinc
United States > US
Japan
silver release
de novo synthesis
ZIF-8
metal-organic frameworks
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Summary:From a porous structure perspective, the one-stage de novo synthesis method and impregnation method were applied to synthesize Ag(I) ion-containing ZIF-8 samples. With the de novo synthesis method, Ag(I) ions could be located inside micropores or adsorbed on the external surface of the ZIF-8 by selecting AgNO in water or Ag CO in ammonia solution as precursors, respectively. The ZIF-8 confining Ag(I) ion exhibited a much lower constant releasing rate than the Ag(I) ion adsorbed on the ZIF-8 surface in artificial seawater. As such, strong diffusion resistance in association with the confinement effect is contributed by ZIF-8's micropore. On the other hand, the release of Ag(I) ions adsorbed on the external surface was diffusion limited. Therefore, the releasing rate would reach a maximum not increasing with Ag(I) loading in the ZIF-8 sample.
Bibliography:ObjectType-Article-1
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ISSN:1996-1944
1996-1944
DOI:10.3390/ma16052040