含有二氧化钛和二氧化钛/二氧化锆纳米颗粒的 PVA 复合膜的制备与表征：比较研究

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-04 DOI:10.2174/0115734110313929240523085701

Akanksha Mehto, Jyotsna Chauhan, V. R. Mehto

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引用次数: 0

摘要

本研究成功制备了由聚乙烯醇（PVA）聚合物与二氧化钛（TiO2）纳米颗粒和二氧化钛/二氧化锆（TiO2/ZrO2）纳米颗粒组合而成的复合膜。分析了复合膜的特性，重点比较了 PVA/TiO2 和 PVA/TiO2/ZrO2 复合膜的特性。采用溶液浇铸法制备了 PVA/TiO2 和 PVA/TiO2/ZrO2 复合膜。纳米粒子的可控生产方法及其在聚合物基质中的均匀分散是这种方法取得成功的关键因素。通过各种表征方法，包括 X 射线衍射 (XRD) 研究、紫外-可见吸收光谱、光致发光 (PL) 光谱、透射电子显微镜 (TEM)、傅立叶变换红外 (FTIR) 光谱和原子力显微镜 (AFM) 分析，对 TiO2 和 ZrO2 纳米颗粒及其复合膜进行了表征。与 PVA/TiO2 膜相比，PVA/TiO2/ZrO2 膜的结晶度更高。傅立叶变换红外光谱显示，PVA、TiO2 和 ZrO2 之间产生了电荷转移复合物。原子力显微镜研究表明，掺杂后表面粗糙度增加，XRD 和 TEM 计算出的晶粒尺寸之间具有良好的一致性。PVA/TiO2/ZrO2 比 PVA/TiO2 表现出更好的特性，这是因为两种无机结构成分与聚合物结合产生的复合易变特性。

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Preparation and Characterization of PVA Composite Membranes with TiO2 and TiO2/ZrO2 Nanoparticles: A Comparative Study

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.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

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.