A Facile Synthesis of Cellulose Acetate Functionalized Zinc Oxide Nanocomposite for Electrochemical Sensing of Cadmium ions

Padmalaya, G.; Sreeja, B. S.; Kumar, P. Dinesh; Radha, S.; Poornima, V.; Arivanandan, M.; Shrestha, Sujan; Uma, T.

doi:10.1007/s10904-018-0989-2

Cited by 28 publications

(6 citation statements)

References 54 publications

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“…When reaction was carried out using hydrothermal method for 6 h, nucleation phase led to the formation of structures. Previously, we have reported the formation of rods using cellulose acetate modified ZnO nanocomposite which had happened due to the increasing nucleation active sites of polymer [15]. From the images, Figs 3 c and d it was noticed that the structures are in uniform size with self‐assembled form due to the van der Waals forces of interaction [16].…”

Section: Resultsmentioning

confidence: 94%

Facile hydrothermal bio‐synthesis of cellulose acetate templated CuS nanorods like fibres: antibacterial, cytotoxicity effects and DNA cleavage properties against A549 lung cancer cells

Manikandan¹,

Padmalaya²,

Mahalakshmi³

et al. 2019

IET nanobiotechnol.

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In this research, the hydrothermal method was used for synthesising cellulose acetate (CA) templated nanorods like CuS fibres using vegetable extract (Brassica oleracea var. italica). These extracts act as a reducing agent in the presence of CA. Surprisingly, when the same reaction was carried out in the absence of CA and broccoli extract, structural morphology disappeared and was found as agglomerated. In the presence of cellulose templated extract mediated CuS has revealed as nanorods like fibres and was confirmed by field emission scanning electron microscope analysis. Their crystallinity property of CuS nanoparticles (NPs) and cellulose templated biosynthesised CuS NPs was analysed and compared using X-ray diffraction technique. The biological activities of the obtained product were examined for antibacterial assessment against two bacterial strains that include two-gram negative strains (E.Coli and S. aureus). The nanostructured product found to exhibit excellent antibacterial agent against all the strains. Biosynthesised nanostructure showed its efficacy against A549 lung cancer cells which might attribute to a larger surface to volume ratio of nanorods like fibres. The authors observation suggest that CuS nanorods like fibres can significantly reduce the cell growth with IC 50 value of 31.2 μg/ml.

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Section: Resultsmentioning

confidence: 94%

Facile hydrothermal bio‐synthesis of cellulose acetate templated CuS nanorods like fibres: antibacterial, cytotoxicity effects and DNA cleavage properties against A549 lung cancer cells

Manikandan¹,

Padmalaya²,

Mahalakshmi³

et al. 2019

IET nanobiotechnol.

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“…In this research work, the preparation of graphene oxide (GO) was performed as reported earlier, using a modified Hummer’s method. Previously, ZnO has been prepared using wet chemical method, which was reported earlier in our works. , In this work, the process for rapidly growing ZnO nanorods is developed using a hydrothermal technique and was described in the following section. To prepare ZnO/FTO electrode, substrate 2 (FTO) was dip-coated with ZnO sol to obtain a seed layer, using 0.05 M zinc acetate in ethanol.…”

Section: Experimental Methodsmentioning

confidence: 99%

An Efficient High-Powered Sulfamethaxazole Sensor Based onp–nJunction Heterostructures Using Nanostructured ZnO Thin Film and Graphene Oxide Sheets

Kumar

Sreeja

Padmalaya

et al. 2022

Ind. Eng. Chem. Res.

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A human framework needs a careful monitoring of drug concentration which imparts unfavorable condition to human health. Among the various antibiotics, sulfamethoxazole (SMX) has been determined to be a typical antibiotic that is used to treat urinary tract infections, toxoplasmosis, pneumonia, and skin and soft tissue infections. Herein, we report an electrochemical sensing platform using graphene oxide (GO), and nanostructured zinc oxide (ZnO) are used for the detection of SMX. In this study, the working electrodes, GO is modified on FTO using a dip coating technique and on ZnO nanostructures, using a hydrothermal coating method. Finally, GO was dip-coated on FTO in order to obtain a seed layer and the ZnO nanostructure was developed using a hydrothermal method, thus obtaining as GO-ZnO/FTO as a working electrode for SMX detection. Hence, our developed electrodes aimed for high sensitivity that was evidenced to detect SMX at high potential windows. Prior to sensing analysis, the physical and morphological properties of developed electrodes were investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM) methods. The performance of GO/FTO, ZnO/FTO, and GO-ZnO/FTO was probed by cyclic voltammetry (CV) and current−voltage characteristics (I−V). It was noticed that GO-ZnO/FTO found to exhibit a flower-like structure morphology with effective surface area and active sites for anchoring adsorbate molecules, thus leading to the production of amplified current signals in high potential windows. Under optimized conditions, the designed sensor provided the SMX detection with nanomolar and picomolar limit of detection (0.182 ng/L, 4.8 pg/L, and 0.0949 ng/L), respectively. Besides the specificity, stability and reliability studies were tested for electrodes in multiple real-time water samples for designed sensors. The experimental results of developed sensors show that it has an excellent electron transfer system on the sensor surface among the practical sensors reported for drug applications.

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“…By comparing the IR spectra of ZnO and ZnO/Cellulose Acetate composite, the peak at wave number 1126 cm −1 is shifted to 1045 cm −1 . The peak shift can result from cellulose acetate and ZnO forming a hydrogen bond bridge (Padmalaya et al, 2019) . The presence of ZnO was confirmed at wave number 488 cm −1 in the IR spectra of ZnO and ZnO/Cellulose Acetate composite.…”

Section: Ftir Testingmentioning

confidence: 99%

“…This is because the addition of ZnO into the cellulose matrix causes lattice distortion which also affects the size of the composite crystal. The crystal field will shrink after the addition of ZnO due to the radius of the Zn 2+ atom and will result in variations in crystal size (Padmalaya et al, 2019) . The average size of the composite crystal was obtained as 24.14 nm with a crystallinity index of 34.05%.…”

Section: Xrd Testingmentioning

confidence: 99%

Synthesis and Characterization of ZnO/Cellulose Acetate Composite and its Activity as Antibacterial Agent

Khefanny,

Charlena,

Sugiarti

2024

Sci. Technol. Indones

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Cellulose is an abundant natural polymer that can be applied in various fields. Cellulose has many types and derivatives, one of which is cellulose acetate. Cellulose can be obtained from various natural sources such as kepok banana peel. The a-cellulose content in kepok banana peel is high enough at 94% so that it can be utilized as a cellulose acetate raw material. Modification of cellulose acetate using antibacterial agents is needed, considering that cellulose does not have antibacterial properties. Metal oxide materials such as ZnO nanoparticles are used as antibacterial agents. This study added ZnO nanoparticles to cellulose acetate and tested its antibacterial activity. The characteristics of ZnO were analyzed by UV-Vis, PSA, and FTIR. The characteristics of cellulose acetate and composites were analyzed by FTIR and XRD. Antibacterial activity tests were performed on all samples. The results showed the band gap value of ZnO was 3.37 eV. The average size of ZnO nanoparticle distribution using PSA was 96.23 nm with an average PI value of 0.151. An indicator that the ZnO compound and cellulose acetate have been sucessfully mixed is the absorption band at wave number 488 cm−1. A composite crystal size of 24.14 nm and a crystallinity percentage of 34.05% were found using XRD data. S. aureus bacteria are more inhibited by all evaluated substances antibacterial properties than E. coli germs. ZnO/Cellulose Acetate composite is categorized as strong inhibition, while ZnO nanoparticles are categorized as medium inhibition.

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A Facile Synthesis of Cellulose Acetate Functionalized Zinc Oxide Nanocomposite for Electrochemical Sensing of Cadmium ions

Cited by 28 publications

References 54 publications

Facile hydrothermal bio‐synthesis of cellulose acetate templated CuS nanorods like fibres: antibacterial, cytotoxicity effects and DNA cleavage properties against A549 lung cancer cells

Facile hydrothermal bio‐synthesis of cellulose acetate templated CuS nanorods like fibres: antibacterial, cytotoxicity effects and DNA cleavage properties against A549 lung cancer cells

An Efficient High-Powered Sulfamethaxazole Sensor Based onp–nJunction Heterostructures Using Nanostructured ZnO Thin Film and Graphene Oxide Sheets

Synthesis and Characterization of ZnO/Cellulose Acetate Composite and its Activity as Antibacterial Agent

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