Polyvinyl alcohol (PVA)/Carboxymethyl cellulose (CMC)/Manganese dioxide (PVA/CMC/MnO2 NPs) nanocomposite were produced by one-pot laser ablation route. PVA/CMC/MnO2 NPs nanocomposite were prepared with different content of manganese dioxide nanoparticles. The formation of MnO2 is confirmed by appearing diffraction peaks at 2θ?=?26.4°, 28.4°, 37.2°, 42.5°, 56.4°, 72.2° according to JCPDS No. 24-0735 which agreed with previous literature. The increasing of laser ablation time causes a change of all bands intensities. All the above conclusions affirmed the formation of Mn–O and their complexation with PVA/CMC blend. The ultraviolet and visible (UV/Vis.) measurements showed enhanced in the optical properties as the ratio of Manganese dioxide nanoparticles enhanced. The absorption edge is changed towards lower photon energy sides when MnO2 NPs are added to the PVA/CMC. The AC conductivity was enhanced after the addition of MnO2 NPs. The values of the ε′ and ε? of the synthesized samples increased as the ratio of Manganese dioxide nanoparticles increased, which is attributed to an increase in the current films' ion conduction. The obtained results demonstrate the benefits of using MnO2 NPs as a filler to improve polymeric systems and suggest it for optical and electrical applications.
相似文献The molecular structures of pure polymer (chitosan) incorporated with ternary metal nanoparticles (Au/Bi2O3/Mo) synthesized by laser ablation have been performed ia FT-IR and XRD. The surface of the synthesized samples has been investigated ia SEM. Thermal, electrical, and dielectric haracterization have been performed to utilized in energy applications. XRD patterns display the amorphous nature of chitosan (Cs), characterized by two hump peaks at 2? =11.34o and 2? =19.57o, which disappeared by doped with Au/Bi2O3/Mo NPs. FT-IR spectra revealed that thereare complexation between Cs and Au/Bi2O3/Mo NPs took place in amorphous regions. SEM displays grains with rectangular shape after adding different filling nanoparticles, and rod-shaped formed on the surface of the samples.TGA curves obtained the enhancement in the thermal stability of samples . The AC conductivity of the samples increased by the addition of Au/Bi2O3/Mo NPs. The results confirm that nanocomposite of Cs/metal have excellent thermal and electronic haracterization, which may suggest the utilization of these nanocomposites in energy storage.
相似文献This study supports the binary and ternary merging tactic, this methodology is useful in the creation of new features that lacked in the parent constituents. Ra develops to reach its peak of 4.25 nm upon HAP/Sb2O3/GO which is shadowed by HAP/Sb2O3 with 3.87 nm. EDX technique offers quantitative, and qualitative elemental composition of the studied composite, where C, O, P, Ca, and Sb elements records 17.14, 66, 8.7, 7.57, and0.58%, respectively. Consequently, the composition is pure. Also, The BET technique’s resultant surface area is 39.49 for HAP/Sb2O3, and 50.76 m2/g for HAP/Sb2O3/GO. Additionally, The (HAP/GO, and HAP/Sb2O3/GO) ceramic composites microhardness was 3.2?±?0.2 GPa for binary composite, and 3.5?±?0.3 GPa for ternary composite. Thus, GO nano-materials enhance mechanical behavior. Applicably, the merging of the three components in one ternary nanocomposite presents the highest viability with 98.4?±?0.8%, besides the highest antibacterial performance by 15.2?±?0.4 mm for Escherichia coli and 16.1?±?0.5 mm for Staphylococcus aureus.
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