Back to Search
Start Over
Theoretical Investigation of the Adsorption of Cadmium Iodide from Water Using Polyaniline Polymer Filled with TiO2 and ZnO Nanoparticles
- Source :
- Water, Volume 13, Issue 18, Water, Vol 13, Iss 2591, p 2591 (2021)
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- The removal of heavy metals from drinking water has attracted great interest in water purification technology. In this study, a biocompatible Polyaniline (PANI) polymer filled with TiO2 and ZnO nanoparticles (NPs) is considered as an adsorbent of cadmium iodide from water. Theoretical investigation of the van der Waals (vdW) interactions deduced from the Hamaker constant calculated on the basis of Lifshitz theory was presented. It was found that the surface energy as well as the work of adhesion between water and PANI/NPs across air increases with an increasing volume fraction of the TiO2 and ZnO nanoparticles. Consequently, an increase in the Laplace pressure around the cavities/porosities was found, which leads to the enhancement of the specific contact surface between water and PANI/NPs. On the other hand, for the interactions between CdI2 particles and PANI/NPs surface across water, we show that the interactions are governed principally by the attractive London dispersion forces. The vdW energy and force increase proportionally with the augmentation of the volume fraction of nanoparticles and of the radius of the CdI2 particle. Particularly, the PANI/TiO2 has been proved to be a better candidate for adsorption of cadmium iodide from water than PANI/ZnO.
- Subjects :
- Materials science
Water supply for domestic and industrial purposes
Hamaker constant
Geography, Planning and Development
Nanoparticle
Hydraulic engineering
Aquatic Science
Biochemistry
polyaniline
Surface energy
chemistry.chemical_compound
symbols.namesake
Adsorption
Cadmium iodide
chemistry
Chemical engineering
adsorption
Volume fraction
Polyaniline
symbols
van der Waals force
TC1-978
TD201-500
cadmium iodide
Water Science and Technology
Subjects
Details
- ISSN :
- 20734441
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- Water
- Accession number :
- edsair.doi.dedup.....74e0e244febbc42d40eb64824f26ee1a