Publication detail

Increased Colloidal Stability and Decreased Solubility—Sol–Gel Synthesis of Zinc Oxide Nanoparticles with Humic Acids

ŠEBESTA M. KOLENČÍK M. URÍK M. BUJDOŠ M. VÁVRA I. DOBROČKA E. SMILEK, J. KALINA, M. DIVIŠ, P. PAVÚK M. MIGLIERINI M. KRATOŠOVÁ G. MATÚŠ P

Original Title

Increased Colloidal Stability and Decreased Solubility—Sol–Gel Synthesis of Zinc Oxide Nanoparticles with Humic Acids

English Title

Increased Colloidal Stability and Decreased Solubility—Sol–Gel Synthesis of Zinc Oxide Nanoparticles with Humic Acids

Type

journal article in Web of Science

Language

en

Original Abstract

Adding the humic acid coating to the nanoparticles of zinc oxide (ZnO-NP) may improve the properties necessary for their colloidal stability. To show how humic acid coating affects the properties of ZnO-NP, three differently sol–gel synthesized ZnO-NP were synthesized: pristine zinc oxide nanoparticles without coating (p-ZnO-NP) and humic acid coated zinc oxide nanoparticles at two different initial concentrations of 20 mg/L (HA20-ZnO-NP) and 200 mg/L (HA200-ZnO-NP) of humic acids in the starting solution. All ZnO-NP were found to be nanocrystals of mineral zincite exhibiting wurtzite crystal symmetry. Transmission electron microscopy showed that capping by humic acids during synthesis decreased the size of HA20-ZnO-NP and HA200-ZnO-NP compared to p-ZnO-NP nanoparticles. Via experiments, HA20-ZnO-NP were found to dissolve less and have a similar or higher stability than both p-ZnO-NP and HA200-ZnO-NP

English abstract

Adding the humic acid coating to the nanoparticles of zinc oxide (ZnO-NP) may improve the properties necessary for their colloidal stability. To show how humic acid coating affects the properties of ZnO-NP, three differently sol–gel synthesized ZnO-NP were synthesized: pristine zinc oxide nanoparticles without coating (p-ZnO-NP) and humic acid coated zinc oxide nanoparticles at two different initial concentrations of 20 mg/L (HA20-ZnO-NP) and 200 mg/L (HA200-ZnO-NP) of humic acids in the starting solution. All ZnO-NP were found to be nanocrystals of mineral zincite exhibiting wurtzite crystal symmetry. Transmission electron microscopy showed that capping by humic acids during synthesis decreased the size of HA20-ZnO-NP and HA200-ZnO-NP compared to p-ZnO-NP nanoparticles. Via experiments, HA20-ZnO-NP were found to dissolve less and have a similar or higher stability than both p-ZnO-NP and HA200-ZnO-NP

Keywords

Humic Acids, Zinc Oxide Nanoparticles, Colloidal Stability, Sedimentation, Dissolution

Released

02.01.2019

Pages from

3024

Pages to

3030

Pages count

7

URL

Documents

BibTex


@article{BUT151964,
  author="Pavel {Diviš} and Jiří {Smilek} and Michal {Kalina}",
  title="Increased Colloidal Stability and Decreased Solubility—Sol–Gel Synthesis of Zinc Oxide Nanoparticles with Humic Acids",
  annote="Adding the humic acid coating to the nanoparticles of zinc oxide (ZnO-NP) may improve the properties necessary for their colloidal stability. To show how humic acid coating affects the properties of ZnO-NP, three differently sol–gel synthesized ZnO-NP were synthesized: pristine zinc oxide
nanoparticles without coating (p-ZnO-NP) and humic acid coated zinc oxide nanoparticles at two
different initial concentrations of 20 mg/L (HA20-ZnO-NP) and 200 mg/L (HA200-ZnO-NP) of humic
acids in the starting solution. All ZnO-NP were found to be nanocrystals of mineral zincite exhibiting
wurtzite crystal symmetry. Transmission electron microscopy showed that capping by humic acids
during synthesis decreased the size of HA20-ZnO-NP and HA200-ZnO-NP compared to p-ZnO-NP
nanoparticles. Via experiments, HA20-ZnO-NP were found to dissolve less and have a similar or
higher stability than both p-ZnO-NP and HA200-ZnO-NP",
  chapter="151964",
  doi="10.1166/jnn.2019.15868",
  number="5",
  volume="19",
  year="2019",
  month="january",
  pages="3024--3030",
  type="journal article in Web of Science"
}