{"title":"Preparation and Characterization of PVA Composite Membranes with\nTiO2 and TiO2/ZrO2 Nanoparticles: A Comparative Study","authors":"Akanksha Mehto, Jyotsna Chauhan, V. R. Mehto","doi":"10.2174/0115734110313929240523085701","DOIUrl":null,"url":null,"abstract":"\n\nThis study presents the successful fabrication of composite membranes\ncomposed of polyvinyl alcohol (PVA) polymer blended with titanium dioxide (TiO2) nanoparticles\nand a combination of titanium dioxide/zirconium dioxide (TiO2/ZrO2) nanoparticles. The features\nof composite membranes were analyzed with a specific focus on comparing the characteristics of\nPVA/TiO2 and PVA/TiO2/ZrO2 composite membranes.\n\n\n\nTiO2 and ZrO2 nanoparticles were prepared using the sol-gel method. PVA/TiO2 and\nPVA/TiO2/ZrO2 composite membranes were fabricated utilizing the solution casting method. A\ncontrolled method of production of nanoparticles and their uniform dispersion inside the polymer\nmatrix are the key components contributing to the success of this approach. TiO2 and ZrO2 nanoparticles\nand their composite membranes were characterized through various characterization\nmethods encompassing X-ray diffraction (XRD) study, UV-visible absorption spectroscopy, photoluminescence\n(PL) spectroscopy, transmission electron microscopy (TEM), Fourier-transform\ninfrared (FTIR) spectroscopy and atomic force microscopy (AFM) analysis.\n\n\n\nThe XRD study revealed improved crystallinity in composite membranes. The\nPVA/TiO2/ZrO2 membrane possessed a greater level of crystallinity than the PVA/TiO2 membrane.\nThe composite membranes exhibited enhanced absorption and PL behaviour. The FTIR spectra\nrevealed the creation of a charge-transfer complex among the PVA, TiO2 and ZrO2. The AFM\nstudy indicates that surface roughness increases after doping\n\n\n\nGood concurrence is established between grain size calculated by XRD and TEM.\nPVA/TiO2/ZrO2 exhibits more improved characteristics than PVA/TiO2 because of the composite\nversatile properties resulting from the combining of two inorganic structural components with polymer.\nSuch characteristics render it an appealing option for optical and optoelectronic device applications.\n","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.2174/0115734110313929240523085701","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
This study presents the successful fabrication of composite membranes
composed of polyvinyl alcohol (PVA) polymer blended with titanium dioxide (TiO2) nanoparticles
and a combination of titanium dioxide/zirconium dioxide (TiO2/ZrO2) nanoparticles. The features
of composite membranes were analyzed with a specific focus on comparing the characteristics of
PVA/TiO2 and PVA/TiO2/ZrO2 composite membranes.
TiO2 and ZrO2 nanoparticles were prepared using the sol-gel method. PVA/TiO2 and
PVA/TiO2/ZrO2 composite membranes were fabricated utilizing the solution casting method. A
controlled method of production of nanoparticles and their uniform dispersion inside the polymer
matrix are the key components contributing to the success of this approach. TiO2 and ZrO2 nanoparticles
and their composite membranes were characterized through various characterization
methods encompassing X-ray diffraction (XRD) study, UV-visible absorption spectroscopy, photoluminescence
(PL) spectroscopy, transmission electron microscopy (TEM), Fourier-transform
infrared (FTIR) spectroscopy and atomic force microscopy (AFM) analysis.
The XRD study revealed improved crystallinity in composite membranes. The
PVA/TiO2/ZrO2 membrane possessed a greater level of crystallinity than the PVA/TiO2 membrane.
The composite membranes exhibited enhanced absorption and PL behaviour. The FTIR spectra
revealed the creation of a charge-transfer complex among the PVA, TiO2 and ZrO2. The AFM
study indicates that surface roughness increases after doping
Good concurrence is established between grain size calculated by XRD and TEM.
PVA/TiO2/ZrO2 exhibits more improved characteristics than PVA/TiO2 because of the composite
versatile properties resulting from the combining of two inorganic structural components with polymer.
Such characteristics render it an appealing option for optical and optoelectronic device applications.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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