Oriented ZnO nanoflowers obtained after calcination of electrospinning poly(vinyl alcohol)/zinc oxide/zinc acetate composite mats

Khankhuean, Anchan; Kuratsameethong, Wantana; Santibenchakul, Somtop; Laobuthee, Apirat; Sugimoto, Masataka; Srisawat, Natee; Jamnongkan, Tongsai

doi:10.1016/j.sajce.2021.06.002

Cited by 4 publications

(6 citation statements)

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“…ZnO nanoflowers were successfully fabricated by electrospinning from a suspension of zinc acetate used as a precursor via a calcination process [ 26 ]. Then, 3D printing filaments of PLA loaded with varying ZnO nanoflower contents were prepared by an extrusion method as follows.…”

Section: Methodsmentioning

confidence: 99%

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A Comprehensive Evaluation of Mechanical, Thermal, and Antibacterial Properties of PLA/ZnO Nanoflower Biocomposite Filaments for 3D Printing Application

et al. 2022

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Functionalities of 3D printing filaments have gained much attention owing to their properties for various applications in the last few years. Innovative biocomposite 3D printing filaments based on polylactic acid (PLA) composited with ZnO nanoflowers at varying contents were successfully fabricated via a single-screw extrusion technique. The effects of the varying ZnO nanoflower contents on their chemical, thermal, mechanical, and antibacterial properties were investigated using Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and tensile testing, as well as qualitative and quantitative antibacterial tests, respectively. It was found that the ZnO nanoflowers did not express any chemical reactions with the PLA chains. The degrees of the crystallinity of the PLA/ZnO biocomposite filaments increased when compared with those of the neat PLA, and their properties slightly decreased when increasing the ZnO nanoflower contents. Additionally, the tensile strength of the PLA/ZnO biocomposite filaments gradually decreased when increasing the ZnO nanoflower contents. The antibacterial activity especially increased when increasing the ZnO nanoflower contents. Additionally, these 3D printing filaments performed better against Gram-positive (S. aureus) than Gram-negative (E. coli). This is probably due to the difference in the cell walls of the bacterial strains. The results indicated that these 3D printing filaments could be utilized for 3D printing and applied to medical fields.

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Section: Methodsmentioning

confidence: 99%

“…A simple method for producing ZnO nanoflowers is the electrospinning method, which is able to produce at room temperature under ambient conditions. Additionally, their size, shape, and morphology can be defined by optimizing the conditions of the spinning processes [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Evaluation of Mechanical, Thermal, and Antibacterial Properties of PLA/ZnO Nanoflower Biocomposite Filaments for 3D Printing Application

et al. 2022

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“…Photocatalytic materials were obtained by hydrothermal synthesis [ 42 , 43 ] starting from Zn(CH 3 COO) 2 ·2H 2 O and Ce(NO₃)₃‧6H₂O (Sigma-Aldrich) as precursors and NH 4 OH (25% from Chemical Company, Romania) and PVA (average Mw 89,000–98,000, 99%, Aldrich) as anti-agglomeration agents. The precursors were mixed with ammonia solution in different molar ratios (S2- 2ZnO:CeO 2 ; S3- ZnO:2CeO 2 ), the mixture was kept at 120 °C for 8 h in a Teflon autoclave, and then the precipitates obtained were separated by centrifugation and washed with bidistilled water until the total elimination of NH 4 OH, NH 4 NO 3 , and CH 3 COOH.…”

Section: Methodsmentioning

confidence: 99%

Photocatalytic Removal of Antibiotics from Wastewater Using the CeO2/ZnO Heterojunction

et al. 2023

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CeO2/ZnO-based photocatalytic materials were synthesized by the sol-gel method in order to establish heterojunctions that increase the degradation efficiency of some types of antibiotics by preventing the recombination of electron–hole pairs. The synthesized materials were analysed by XRD, SEM, EDAX, FTIR, and UV-Vis. After several tests, the optimal concentration of the catalyst was determined to be 0.05 g‧L−1 and 0.025 g‧L−1 for chlortetracycline and 0.05 g‧L−1 for ceftriaxone. CeO2/ZnO assemblies showed much better degradation efficiency compared to ZnO or CeO2 tested individually. Sample S3 shows good photocatalytic properties for the elimination of ceftriaxone and tetracycline both from single solutions and from the binary solution. This work provides a different perspective to identify other powerful and inexpensive photocatalysts for wastewater treatment.

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“…[13] Electrospinning PVA-based fibers is popular because its many hydroxyl (OH) groups allow crystallinity, water solubility, and chemical dissolution. [14,15] Nanoparticles like boron nitride, [16] TiO 2 , [17] ZnO, [18] SiC and reduced graphene oxide, [19] and additives like boric acid (BA) can improve PVA polymers, thermal conductivity, photocatalytic efficiency, microwave absorption, thermal insulation, and energy storage. In the reaction, BA forms H + ions and PVA forms OH − ions in distilled water.…”

Section: Introductionmentioning

confidence: 99%

“…By adjusting the solubility; less water-soluble polymers such as chitosan, polycaprolactone, and gelatine could be electrospun into nanofibers. [18,19,33] This study optimized the solid loading of a PVA-BA polymer blend in distilled water to improve electrospun borate ester fibers. To maximize neutron capture, boric acid was used as a boron source.…”

Section: Introductionmentioning

confidence: 99%

An Optimization Study for the Electrospun Borate Ester Nanofibers as Light‐Weight, Flexible, and Affordable Neutron Shields for Personal Protection

Özcan

Kaya

2023

Macro Materials & Eng

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In this manuscript, a borate ester solution, as a precursor, is prepared by combining polyvinyl alcohol (PVA) and boric acid (BA). The precursor is then electrospun to form nanofibers. However, the addition of BA has a negative effect on the spinning behavior by changing the conductivity. The solution's quality is enhanced through use of additives such as glycerol, sodium chloride, and acetic acid. The effect of additives on the viscosity and conductivity of solutions, and their spinning behavior, is investigated. By adjusting electrospinning process variables and solution properties, nanofibers are produced. Fourier transform infrared (FT‐IR) analysis is performed to identify the formation of borate ester as a result of the reaction between PVA and BA. Thermal analysis is used to characterize the thermal stability of the fibers. Scanning electron microscopy (SEM) is used to examine the fiber morphology and diameter distribution. The findings are used to determine the best viscosity–conductivity windows for the production of electrospun borate ester nanofibers. Finally, the ability of optimized nanofibers to capture neutrons is evaluated using an Am‐Be neutron source and a BF3 detector set up. The results of the measurements indicate that the incorporation of BA into PVA nanofibers can enhance their neutron shielding capabilities up to 7.3%.

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Oriented ZnO nanoflowers obtained after calcination of electrospinning poly(vinyl alcohol)/zinc oxide/zinc acetate composite mats

Cited by 4 publications

References 29 publications

A Comprehensive Evaluation of Mechanical, Thermal, and Antibacterial Properties of PLA/ZnO Nanoflower Biocomposite Filaments for 3D Printing Application

A Comprehensive Evaluation of Mechanical, Thermal, and Antibacterial Properties of PLA/ZnO Nanoflower Biocomposite Filaments for 3D Printing Application

Photocatalytic Removal of Antibiotics from Wastewater Using the CeO2/ZnO Heterojunction

An Optimization Study for the Electrospun Borate Ester Nanofibers as Light‐Weight, Flexible, and Affordable Neutron Shields for Personal Protection

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