Photocatalytic Dye Degradation and Biological Activities of Cu-Doped ZnSe Nanoparticles and Their Insights

Environmental nanotechnology has received much attention owing to its implications on environmental ecosystem, and thus is promising for the elimination of toxic elements from the aquatic surface. This work focuses on Cu-doped ZnSe nanoparticles using the co-precipitation method. The synthesized Cu-doped ZnSe nanoparticles were examined for structural, optical, and morphological properties with the help of XRD, FTIR, UV/vis diffuse reflection spectroscopy (DRS), FESEM, TEM, and XPS. The synthesized Cu-doped ZnSe nanoparticles revealed the presence of Cu2+ in the ZnSe lattice, which has been shown to take a predominant role for enhanced catalysis in the Cu-doped ZnSe nanoparticles. The synthesized Cu-doped ZnSe nanoparticles were investigated for their catalytic and antibacterial activities. The 0.1 M copper-doped ZnSe nanoparticles exhibited the highest rate of degradation against the methyl orange dye, which was found to be 87%. A pseudo-first-order kinetics was followed by Cu-doped ZnSe nanoparticles with a rate constant of 0.1334 min−1. The gram-positive and gram-negative bacteria were used for investigating the anti-bacterial activity of the Cu-doped ZnSe nanoparticles. The Cu-doped ZnSe nanoparticles exhibited enhanced photocatalytic and antibacterial activity.

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Synthesis and characterization of silver doped magnetic-nanoclay montmorillonite/iron oxide/silver nanocomposite for environmental applications throught effective dye degradation

10.21203/rs.3.rs-296035/v1 ◽

2021 ◽

Author(s):

Musa Kazim Acar ◽

Türkan Altun ◽

Ilkay Hilal Gubbuk

Keyword(s):

Iron Oxide ◽

Dye Degradation ◽

Chemical Reduction ◽

Precipitation Method ◽

Reaction Conditions ◽

First Order Kinetics ◽

Optimum Reaction ◽

Silver Nanocomposite ◽

Co Precipitation

Abstract Magnetic-nanoclay montmorillonite/iron oxide (MMT/Fe 3 O 4 ) nanocomposite was prepared by co-precipitation method and montmorillonite/iron oxide/silver (MMT/Fe 3 O 4 /Ag) nanocomposite was synthesized, called as chemical reduction method, by reduction of silver nitrate (AgNO 3 ) salt with sodium borohydride (NaBH 4 ) as reducing agent. These nanocomposites were characterized by Branuer-Emmet-Teller Surface Area and Porosity Dimension (BET), X-Ray Diffractometer (XRD), Fourier Transform Infrared Spectrum (FTIR), Scanning Electron Microscope (SEM) and Vibrating Sample Magnetometer (VSM). Subsequently, MMT/Fe 3 O 4 /Ag was used in degradation of Rhodamine B (RhB) in the presence of NaBH 4 to evaluate catalytic activity of its and consequences were monitored using UV-Visible Spektrofotometer (UV-Vis). Moreover, various parameters including pH, catalyst dosage, initial dye concentration and amount of NaBH 4 were investigated for optimum reaction conditions. The reduction reactions followed pseudo-first order kinetics and complete degradation of RhB were achieved in 8 minutes using MMT/Fe 3 O 4 /Ag as catalysts while degradation of %46 of RhB were achieved in 60 minutes using MMT/Fe 3 O 4 .

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Photocatalytic Performances and Antibacterial Activities of Nano-Zno Derived By Cetrimide-Based Co-Precipitation Method by Varying Solvents

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.b7145.129219 ◽

2019 ◽

Vol 9 (2) ◽

pp. 930-938

Keyword(s):

Dye Degradation ◽

Uv Light ◽

Cost Effective ◽

Antibacterial Activities ◽

Precipitation Method ◽

Zno Nanostructures ◽

Sem Images ◽

Potential Applications ◽

Powder Samples ◽

Co Precipitation

In this work, zinc oxide nanoparticles have been synthesized by cost-effective and based on the efficient cetrimide and varying solvents are using the method of co-precipitation annealing at 350 C. The resultant powder samples were characterized well by means of XRD, SEM, FT-IR, PL and UV-visible DRS spectroscopy. Among them, XRD exhibits ZnO has the structure of hexagonal wurtzite with a preferred orientation of 101 planes. It is noted in ZnO represented in SEM images have different solvents and cetrimide has a strong influence on the morphology of ZnO nanostructures that are to be sized are 50nm, 70nm, 90nm 100nm. It confirms that the changes in the band-gap from UV-vis DRS data. The presence of Zn-O confirms various functional groups decomposed in the sample from FTIR data. The PL study states that the emission band available at approximately 410nm and checks the recombination level shows low, further, it correlates with good photocatalytic properties. The sunlight measured by Lux meter and dye degradation studies is done by a simple aeration photocatalytic technique represents 95% degradations and under UV light is 85%. Besides, the scavengers of the responsive species of during the degradation were additionally examined for photocatalytic mechanism. An antibacterial activity is enhanced significantly, which is based on the attribution of Nano features of ZnO nanostructures for p. aeruginosa bacteria. Thus, this study paved the way for potential applications of photocatalytic and antibacterial activities.

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Synthesis of Silica Modified Large-Sized Hydroxyapatite Whiskers by a Hydrothermal Co-Precipitation Method

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.645-646.1339 ◽

2015 ◽

Vol 645-646 ◽

pp. 1339-1344 ◽

Cited By ~ 1

Author(s):

Yan Ting Yin ◽

Qing Hua Chen ◽

Ting Ting Yan ◽

Qing Hua Chen

Keyword(s):

Bone Repair ◽

Ethanol Solution ◽

Morphological Properties ◽

Precipitation Method ◽

X Ray Diffraction ◽

X Ray ◽

New Type ◽

Ft Ir ◽

Co Precipitation ◽

Surface Modified

The objective of this study was to develop a novel silica modified large-sized hydroxyapatite whiskers with improved properties for use in bone repair applications. Large-sized whiskers with a mean length of 250μm were obtained by a hydrothermal co-precipitation method at 150°C, 7.5Mpa in high-pressure reactor. Silica modified hydroxyapatite whiskers were prepared by dissolving TEOS in ethanol solution, then sintering with hydroxyapatite. The compositional and morphological properties of prepared whiskers were studied by means of x-ray diffraction (XRD), Fouier transform infrared (FT-IR), scanning electron microscopy (SEM). The results indicated the evidence of nanosilicon dioxide particles on the surface of HAP whiskers. The size of nanosilicon dioxide particles depends on dropping and stirring rate. Hence, this new type of silica modified large-sized hydroxyapatite whiskers is a valuable candidate for biomedical applications.Key words: hydroxyapatite, hydrothermal co-precipitation, surface modified, whiskers

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Biological activity of gum Arabic-coated ferrous oxide nanoparticles

Modern Physics Letters B ◽

10.1142/s021798492150411x ◽

2021 ◽

pp. 2150411

Author(s):

Rania Hasan Huseen ◽

Ali A. Taha ◽

Ihab Q. Ali ◽

Oday Mahmmod Abdulhusein ◽

Selma M. H. Al-Jawad

Keyword(s):

Iron Oxide ◽

Cell Line ◽

Biological Activities ◽

Low Cost ◽

Gum Arabic ◽

Precipitation Method ◽

Oxide Nanoparticles ◽

Electron Microscopic ◽

Co Precipitation ◽

Mcf 7

In this study, iron oxide nanoparticles (NPs) had been prepared by co-precipitation method. In order to reduce their toxicity and increase stability, prepared iron oxide was coated with gum Arabic. Gum Arabic is preferred over synthetic materials due to their non-toxicity, low cost and availability. Characterization of coated and non-coated iron oxide NPs had been performed by spectrophotometer, Fourier transfer infra-red spectrophotometer (FTIR), Zeta potential, X-ray diffraction (XRD) and field emission scanning electron microscopic (FE-SEM). The fabricated nanoparticles appeared purity and crystalline nature by XRD, with diameter average of 27.01 nm and 55.12 nm for iron oxide NPs and iron oxide NPs coated with gum Arabic, respectively. On the other hand, four biological activities of coated and non-coated iron oxide had been investigated. High removal of methylene blue pollutant dye (46%) was observed with iron oxide NPs, while removal percentage was 22.6 performed by iron oxide NPs coated with gum Arabic within 72 h. Iron oxide NPs revealed high inhibition zones of 27.5 nm and 30 mm, at 1000 [Formula: see text]g/ml, against S. aureus and E. coli, respectively, while coated iron oxide NPs with gum Arabic revealed low antibacterial activity against both examined bacteria even when used at 1000 [Formula: see text]g/ml. The hemolytic activity of prepared NPs had been determined. The hemolytic percentage was increased whenever concentrations of nanoparticles increased. Lower hemolytic percentages were 69.76 and 50.98 for iron oxide NPs and iron oxide NPs coated with gum Arabic were observed at a concentration of 250 [Formula: see text]g/ml. Finally, cytotoxic activity was estimated against MCF-7 cell line and normal cell line WRL68 by MTT assay. A decrease in MCF-7 viability to 65.1% was observed when 400 [Formula: see text]g/ml of iron oxide NPs was used, while WRL68 viability was 75.03%. Iron oxide NPs coated with gum Arabic revealed significant reduction in MCF-7 and WRL68 viability to 69.90% and 80.05%, respectively, when 400 [Formula: see text]g/ml of nanoparticles was applied.

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Structural, optical and morphological properties of La, Cu co-doped SnO2 nanocrystals by co-precipitation method

Optical Materials ◽

10.1016/j.optmat.2014.07.003 ◽

2014 ◽

Vol 37 ◽

pp. 425-432 ◽

Cited By ~ 17

Author(s):

S. Nilavazhagan ◽

S. Muthukumaran ◽

M. Ashokkumar

Keyword(s):

Morphological Properties ◽

Precipitation Method ◽

Sno2 Nanocrystals ◽

Co Precipitation ◽

Co Doped

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Synthesis and Characterization of Sr-Doped ZnSe Nanoparticles for Catalytic and Biological Activities

Water ◽

10.3390/w13162189 ◽

2021 ◽

Vol 13 (16) ◽

pp. 2189

Author(s):

V. Beena ◽

S. L. Rayar ◽

S. Ajitha ◽

Awais Ahmad ◽

Munirah D. Albaqami ◽

...

Keyword(s):

Electron Microscopy ◽

Antibacterial Activity ◽

Methyl Orange ◽

Photoelectron Spectroscopy ◽

Biological Activities ◽

Water Remediation ◽

Precipitation Method ◽

Znse Nanoparticles ◽

X Ray ◽

Degradation Of Methyl Orange

The development of cost-effective and ecofriendly approaches toward water purification and antibacterial activity is a hot research topic in this era. Purposely, strontium-doped zinc selenide (Sr-doped ZnSe) nanoparticles, with different molar ratios of Sr2+ cations (0.01, 0.05, and 0.1), were prepared via the co-precipitation method, in which sodium borohydride (NaBH4) and 2-mercaptoethanol were employed as reducing and stabilizing agents, respectively. The ZnSe cubic structure expanded by Sr2+ cations was indicated by X-ray diffraction (XRD) analysis. The absorption of the chemical compounds on the surface was observed via Fourier transform infrared (FT-IR) spectroscopy. The optical orientation was measured by ultraviolet–visible diffused reflectance spectroscopy (UV-DRS) analysis. The surface area, morphology, and elemental purity were analyzed using field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HR-TEM), and energy-dispersive spectroscopy (EDS) analyses. The oxidation state and valency of the synthesized nanoparticles were analyzed using X-ray photoelectron spectroscopy (XPS). Sr-doped ZnSe nanoparticles were investigated for photocatalytic degradation of methyl orange (MO), and their antibacterial potential was investigated against different bacterial strains. The antibacterial activity examined against Staphylococcus aureus and Escherichia coli implied the excellent biological activity of the nanoparticles. Moreover, the Sr-doped ZnSe nanoparticles were evaluated by the successful degradation of methyl orange under visible light irradiation. Therefore, Sr-doped ZnSe nanoparticles have tremendous potential in biological and water remediation fields.

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Photocatalytic dye degradation and biological activities of the Fe2O3/Cu2O nanocomposite

RSC Advances ◽

10.1039/c8ra09929d ◽

2019 ◽

Vol 9 (15) ◽

pp. 8557-8568 ◽

Cited By ~ 30

Author(s):

Mavinakere Ramesh Abhilash ◽

Gangadhar Akshatha ◽

Shivanna Srikantaswamy

Keyword(s):

Dye Degradation ◽

Biological Activities ◽

Hydrothermal Route ◽

Facile Hydrothermal Route ◽

Photocatalytic Dye Degradation

The present study reports the synthesis of the Fe2O3/Cu2O nanocompositeviaa facile hydrothermal route.

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Nitrogen and Carbon Nitride-Doped TiO2 for Multiple Catalysis and Its Antimicrobial Activity

Nanoscale Research Letters ◽

10.1186/s11671-021-03573-4 ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

Atif Ashfaq ◽

Muhammad Ikram ◽

Ali Haider ◽

Anwar Ul-Hamid ◽

Iram Shahzadi ◽

...

Keyword(s):

Antimicrobial Activity ◽

Carbon Nitride ◽

Dye Degradation ◽

Morphological Properties ◽

Degree Of Crystallinity ◽

Bandgap Energy ◽

Fixed Amount ◽

E Coli ◽

Vis Spectroscopy ◽

Co Precipitation

AbstractNitrogen (N) and carbon nitride (C3N4)-doped TiO2 nanostructures were prepared using co-precipitation route. Fixed amount of N and various concentrations (0.1, 0.2, 0.3 wt%) of C3N4 were doped in TiO2 lattice. Through multiple techniques, structural, chemical, optical and morphological properties of samples were thoroughly investigated. XRD results verified anatase TiO2 presence along the substitutional doping of N, while higher degree of crystallinity as well as increased crystallite size were noticed after doping. HR-TEM study revealed formation of nanostructures incorporated on two dimensional (2D) C3N4 nanosheet surface. Elemental composition was checked out using EDS technique which confirmed the presence of dopant in product. Optical characteristics were evaluated with UV–vis spectroscopy which depicted representative redshift in absorption spectra resulted in a reduction in bandgap energy in N/C3N4-doped TiO2 samples. The formation of Ti–O–Ti bonds and different molecular vibrations were disclosed by FTIR. Trap sites and charge carrier’s migration in the materials were evaluated with PL spectroscopy. Multiple catalytic activities (photo, sono and photo-sono) were undertaken to evaluate the dye degradation performance of prepared specimen against methylene blue and ciprofloxacin. Further, antimicrobial activity was analyzed against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) bacteria.

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Structural and UV-Vis Diffuse Reflection Spectroscopy Studies of Nanosized Sr0.5Ba0.5Nb2O6 synthesized by Co-Precipitation method

International Journal of Scientific Research in Science and Technology ◽

10.32628/ijsrst218511 ◽

2021 ◽

pp. 78-83

Author(s):

Sanjay B. Nagdeote

Keyword(s):

Low Temperatures ◽

Diffuse Reflection ◽

Reflectance Spectrum ◽

Precipitation Method ◽

Diffuse Reflection Spectroscopy ◽

Reflection Spectroscopy ◽

Spectroscopy Studies ◽

Co Precipitation ◽

Average Size ◽

Good Homogeneity

The Sr0.5Ba0.5Nb2O6 (SBN-50) is Synthesis by coprecipitation method in nanoscale. TG/DTA shows the reaction and tetragonal phase formation occur at low temperatures, due to which the good homogeneity and morphology of the particles is observed. The average size of the particles was found to be ~ 45 nm. The lattice parameters is found very close to the reported values of single crystals despite method of synthesis and size of the particles. A reflectance spectrum in UV and visible regions shows less reflectance for 337nm and 519nm respectively.

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