Jute stick extract assisted hydrothermal synthesis of zinc oxide nanoflakes and their enhanced photocatalytic and antibacterial efficacy

Nayem, S. M. Abu; Shah, Syed Shaheen; Chaity, Shakira Billah; Biswas, Biswajit; Nahar, Bodrun; Aziz, Md. Abdul; Hossain, Muhammad Zamir

doi:10.1016/j.arabjc.2022.104265

Cited by 16 publications

(8 citation statements)

References 70 publications

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“…The stretching bands in the spectrum for (C=N), (C=C), and (C-H) between 1600 and 1400 cm −1 confirm the fingerprint region of the terpyridine moiety. [37][38][39] Peaks in the 1200 cm −1 to 1000 cm −1 range indicates the presence of C-C and C-N groups. In addition, a C-O stretching vibration was found in the range of 1000 to 700 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

Fe(II)-Based Metallo-Supramolecular Polymer Film for Electrochemical Detection of Nitrite: Studies of Kinetics and Reaction Mechanisms

Awal

Mia

Sarkar

et al. 2023

J. Electrochem. Soc.

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Here, a monometallic supramolecular polymer (SMP) was synthesized for the fabrication of an electrochemical nitrite sensor, and a mechanism for nitrite detection was proposed based on the experimental findings. The SMP (polyFe) was synthesized using a symmetrical ligand containing terpyridine moieties [4′,4′′′′-(1,4- Phenylene) bis(2,2′:6′,2′′-terpyridine)] and ferrous acetate. Various analytical methods, such as ultraviolet/visible titration, field-emission scanning electron microscopy, Fourier transform infrared spectroscopy, and energy dispersive X-ray spectroscopy, were used to characterize polyFe. The molecular weight of polyFe was calculated from the intrinsic viscosity measurement using the Mark-Houwink-Sakurada equation. The electrochemical behavior of the fabricated sensor was investigated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy. The variation in scan rate from CV was used to investigate the kinetics of nitrite oxidation. A possible reaction mechanism was proposed based on the kinetic studies. The proposed sensor showed a good linear range of 2.49 µM to 1.23 mM and a limit of detection of 0.17 µM. Stability, interference, and reproducibility of the proposed sensor were also investigated. The CV technique was used to demonstrate the applicability of the nitrite sensor for real sample analysis. A satisfactory recovery with a low relative standard deviation was achieved.

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Section: Resultsmentioning

confidence: 99%

Fe(II)-Based Metallo-Supramolecular Polymer Film for Electrochemical Detection of Nitrite: Studies of Kinetics and Reaction Mechanisms

Awal

Mia

Sarkar

et al. 2023

J. Electrochem. Soc.

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“…[24] We also used the Scherrer equation to measure the crystal size of the AuNPs. [43] The Scherrer equation is given by:…”

Section: Xrd Analysis Of Aunpsmentioning

confidence: 99%

Biocompatible Gold Nanoparticles‐Modified Fluorine Doped Tin Oxide Electrode for the Fabrication of Enzyme‐Free Glucose Sensor

Abu Nayem,

Islam,

Shah

et al. 2024

Chemistry An Asian Journal

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This work demonstrates the use of jute stick extract as a reducing and stabilizing agent for the synthesis of spherical gold nanoparticles (AuNPs). In UV‐Vis spectroscopy, peak at 550 nm was used to confirm the formation of AuNPs. The spherical surface morphology of AuNPs was determined through SEM and TEM analysis. While XRD investigation revealed the crystallinity of the prepared AuNPs. To ensure the biocompatibility of synthesized AuNPs, a bacterial investigation was conducted with negative results towards bacterial strain. The, modified FTO with AuNPs were able to detect glucose in CV analysis and the constructed sensor displayed a wide linear range of 50 µM to 40 mM with a detection limit of 20 µM. Scan rate analysis was performed to determine the charge transfer coefficient (0.42) and Tafel slope (102 mV/decade). Furthermore, the interfacial surface mechanism is illustrated to understand the interaction of glucose with the electrode surface in an alkaline medium and the product formation through the dehydrogenation and hydrolysis process. The prepared sensor also showed good stability, reproducibility, and anti‐interference capabilities. In the case of real sample analysis, we used a blood serum sample. A low RSD value (<10%) suggests the practical use of AuNPs/FTO in real‐life applications.

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“…The degradation of the obtained solutions was measured from the ultraviolet-visible spectroscopy (UV-vis) absorbance spectrum obtained using a SHIMADZU UV-1800 double-beam spectrophotometer (Shimadzu Corporation, Kyoto, Japan) with a resolution of 0.5 nm and wavelength between 200 and 800 nm. Using Equation (1), the percentage of photocatalytic degradation was then determined [34].…”

Section: Characterization Of Cuo Npsmentioning

confidence: 99%

“…The MB solution with photocatalyst was irradiated for 60 min of UV lamp exposure, indicating that MB was degraded under light conditions. The following formula is used to calculate the rate of dye degradation [34].…”

Section: Uv Light-induced Photodegradation Of Mbmentioning

confidence: 99%

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Synthesis of Spherical Copper Oxide Nanoparticles by Chemical Precipitation Method and Investigation of Their Photocatalytic and Antibacterial Activities

Nahar

Chaity

Gafur

et al. 2023

Journal of Nanomaterials

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Methylene blue (MB) dye and Staphylococcus aureus (S. aureus) bacteria in wastewater are the two significant problems currently. Researchers have been looking for materials that can combat these two problems at the same time. In the present study, we describe the synthesis of spherical copper oxide (CuO) nanoparticles (NPs) by the chemical precipitation method and evaluate their photocatalytic performance against MB dye and antibacterial efficacy against S. aureus. CuO NPs were produced using copper acetate monohydrate (Cu(CH3COO)2·H2O) as the precursor and sodium hydroxide (NaOH) as the reducing agent. Synthesized CuO NPs were characterized using a combination of techniques, including ultraviolet–visible spectroscopy, X-ray diffraction, transmission electron microscopy, selected area electron diffraction, Fourier transform infrared, and energy-dispersive X-ray diffraction analysis. All the analyses indicated that monoclinic CuO NPs were formed with a spherical shape and an average particle size of 6.2 nm. Photocatalytic experiments indicated that 55.5% of a 10 ppm MB dye solution was degraded by the prepared nano-CuO photocatalyst only after 60 min. Additionally, synthesized CuO NPs demonstrated, to some extent, the zone of inhibition on the S. aureus bacterium’s cell wall. It is inspiring that CuO NPs can be used to solve two problems of MB dye contamination and S. aureus bacterial infection simultaneously.

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Jute stick extract assisted hydrothermal synthesis of zinc oxide nanoflakes and their enhanced photocatalytic and antibacterial efficacy

Cited by 16 publications

References 70 publications

Fe(II)-Based Metallo-Supramolecular Polymer Film for Electrochemical Detection of Nitrite: Studies of Kinetics and Reaction Mechanisms

Fe(II)-Based Metallo-Supramolecular Polymer Film for Electrochemical Detection of Nitrite: Studies of Kinetics and Reaction Mechanisms

Biocompatible Gold Nanoparticles‐Modified Fluorine Doped Tin Oxide Electrode for the Fabrication of Enzyme‐Free Glucose Sensor

Synthesis of Spherical Copper Oxide Nanoparticles by Chemical Precipitation Method and Investigation of Their Photocatalytic and Antibacterial Activities

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