scholarly journals Bio-Assisted Synthesis Of Potassium Doped Ferric Sulphide Nanoparticles For Agricultural Applications

2019 ◽  
Vol 6 (2) ◽  
pp. 4-7
Author(s):  
Balaganesh A.S ◽  
Pavithra N ◽  
RanjitKumar R ◽  
Dinesh K.P.B ◽  
Chandar Shekar B
Keyword(s):  
Green Synthesis ◽  
Crystallite Size ◽  
Average Crystallite Size ◽  
Cost Effective ◽  
Xrd Analysis ◽  
High Yield ◽  
Characteristic Peak ◽  
Agricultural Applications ◽  
Crystalline Nature ◽  
Agglomeration Of Nanoparticles

A simple and cost effective green synthesis (Bio-Assisted) method was used to prepare Potassium doped ferric sulphide nanoparticles. The FTIR spectrum of potassium doped ferric sulphide shows characteristic peak at 617.2 cm-1 indicating M-O bond and shows the presence of K and Fe. The XRD analysis revealed the crystalline nature of the NPs. The average crystallite size was found to be 7.02 nm. The observed FESEM images showed the agglomeration of nanoparticles and are sponge like structure. The study revealed that potassium doped ferric sulphide nanoparticles could be used for high yield in agriculture.

scholarly journals Bio-assisted synthesis of ferric sulphide nanoparticles for agricultural applications

2020 ◽  
Vol 7 (1) ◽  
pp. 35-38
Author(s):  
Pavithra N ◽  
Shiva Subramani M ◽  
Balaganesh A S ◽  
RanjitKumar R ◽  
Dinesh K P B ◽  
...  
Keyword(s):  
Plant Growth ◽  
Surface Morphology ◽  
Green Synthesis ◽  
Crystallite Size ◽  
Agricultural Production ◽  
Growth Study ◽  
Eds Analysis ◽  
Agricultural Applications ◽  
Crystalline Nature ◽  
Co Precipitation

Herein, Ferric sulphide nanoparticles were prepared by co-precipitation (green synthesis) method.Structural study (XRD) confirms the crystalline nature of prepared Ferric sulphide nanoparticles. The crystallite size was estimated and it was found to ~2.0 nm. The surface morphology of the Fe2S3 nanoparticles shows the agglomeration and is sponge and dried algae like structure. EDS analysis reveals the presence of Fe, S, O and C elements in the prepared Ferric sulphide nanoparticles. FTIR spectrum of Ferric sulphide shows the characteristic peaks that confirms the presence of Fe and S in the sample. Moreover, the plant growth study proves that Ferric sulphide nanoparticles could be used as a fertilizer to enhance the agricultural production.

scholarly journals Synthesis of potassium doped ferric sulphide nanoparticles using bio-assisted method for agricultural applications

2020 ◽  
Vol 7 (2) ◽  
pp. 22-25
Author(s):  
Balaganesh A S ◽  
Pavithra N ◽  
Ranjith Kumar R ◽  
Dinesh K.P.B ◽  
Chandar Shekar B
Keyword(s):  
Plant Growth ◽  
Green Synthesis ◽  
Growth Analysis ◽  
Spherical Shape ◽  
High Yield ◽  
Growth Promoter ◽  
Plant Growth Promoter ◽  
Agricultural Applications ◽  
Xrd Studies ◽  
Agglomeration Of Nanoparticles

Potassium (K) doped ferric sulphide nanoparticles were prepared by a simple green synthesis (Bio-Assisted) method. Structural (XRD) studies confirm the formation of K-doped Ferric sulphide nanoparticles. The FESEM images show the agglomeration of nanoparticles that are mostly sponge like structure and spherical shape. The plant growth analysis revealed that potassium doped ferric sulphide nanoparticle could be used as plant growth promoter for high yield in agriculture.

scholarly journals Research of Mechanical Properties of Random Disordered CuNi Alloys

2019 ◽  
Vol 8 (12S) ◽  
pp. 276-281
Keyword(s):  
Crystallite Size ◽  
Vacuum Chamber ◽  
Lattice Strain ◽  
Average Crystallite Size ◽  
Xrd Analysis ◽  
Argon Atmosphere ◽  
Oil Refining ◽  
Preparation Technique ◽  
Disordered Alloys ◽  
Peak Broadening

Preparation technique and structural analysis of random CuNi disordered alloys have been discussed. The arcmelting method is used to prepare different compositions of substitutional random disordered Cu1-x Nix (0.1, 0.3, 0.5, 0.7, 0.9) alloys. The stoichiometric amounts of highly purity constituents copper and nickel metals 5 N (99.999%) have been melted under argon atmosphere in vacuum chamber of 10−3 torr. The substitutional random disordered alloys free from carbon and oxygen traces are confirmed from XPS data. A lattice strain is produced in CuNi alloys as the environment of Ni atoms change from sites to sites. Lattice parameters, unit cell volume, structure and inter-planar spacing were calculated from XRD analysis. The average crystallite size of different compositions of random disordered CuNi alloys is calibrated by using Scherer’s method and Williamson-Hall (W-H) method. The roles of crystallite size and lattice strain on the XRD peak broadening of the random disordered CuNi alloys were analyzed. The strain increases with increase in concentration of Ni and exhibits a maximum of 0.00247 at 50% Ni concentration. The CuNi alloys find very wide applications in oil refining and long corrosion free life.

scholarly journals Synthesis and Characterization of Ce3+-Doped Ni0.5Cd0.5Fe2O4 Nanoparticles by Sol–Gel Auto-Combustion Method

Coatings ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1156
Author(s):  
Danyal Ahmad ◽  
Nasir Mehboob ◽  
Abid Zaman ◽  
Nabeel Ahmed ◽  
Kashif Ahmed ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Crystallite Size ◽  
Sol Gel ◽  
Average Crystallite Size ◽  
Combustion Method ◽  
Xrd Analysis ◽  
Sem Images ◽  
X Ray ◽  
Auto Combustion ◽  
Ray Density

Cerium (Ce)-doped Ni0.5Cd0.5CexFe2−xO4 (0.0 ≤ x ≤ 0.20) was synthesized using the sol–gel auto-combustion method. X-ray diffraction (XRD) analysis revealed that all the samples retained spinel cubic crystal structure with space group Fd3m at 800 °C. Crystal structure parameters, such as lattice constant, average crystallite size, and X-ray density were estimated from the major XRD (311) peak. Bulk density and porosity were also calculated. The average crystallite size was estimated to be in the range of 20–24 nm. SEM images displayed agglomerated particles with a porous morphology. The dielectric constant (ε′) increased and the dielectric loss tangent (tanδ) decreased with rising Ce concentration. The hysteresis loop (M–H loop) was measured at room temperature using a vibrating-sample magnetometer (VSM), which showed a nonlinear decrease in magnetization and coercivity with increasing Ce concentration.

scholarly journals Fabrication and Characterization of Copper Nanoparticles by Green Synthesis Approach Using Plectranthus Amboinicus Leaves Extract

2020 ◽  
Author(s):  
Srividya Parthasarathy ◽  
Sanjana Jayacumar ◽  
Sudestna Chakraborty ◽  
Prathyusha Soundararajan ◽  
Darshani Joshi ◽  
...  
Keyword(s):  
Zeta Potential ◽  
Green Synthesis ◽  
Copper Nanoparticles ◽  
Leaf Extract ◽  
Cost Effective ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
Copper Sulphate Solution ◽  
Synthesis Of Nanoparticles ◽  
Plectranthus Amboinicus

Abstract The field of nanotechnology is gaining interest among the researchers towards the eco-friendly way of synthesis of nanoparticles. In this project, green synthesis technique was employed to induce the synthesis of copper nanoparticles using Plectranthus amboinicus, i.e. Mexican mint, identified as Coleus amboinicus leaf extract. We report an eco-friendly synthesis of copper nanoparticle using Plectranthus amboinicus leaf extract, which is a simple and an ostentatiously rapid method which produces stable nanoparticles. The copper sulphate solution was naturally employed as a precursor for synthesizing the copper nanoparticles. The extract of the plant Plectranthus amboinicus was found to showcase excellent reducing and stabilizing properties. By using Ultraviolet-Visible spectroscopy, Zeta Potential, and X-Ray Diffraction (XRD) studies, it was confirmed that copper nanoparticles have been synthesized. The UV-Spectrometer analysis shows the characteristic peak indicating the synthesis of copper nanoparticles. The pattern of XRD analysis showed particle size of 16 - 25 nm and it reveals high crystallinity of the copper nanoparticles. Zeta potential was done to find the charge of the nanoparticles and size distribution which showed to have significant stability. This method proves to be cost-effective, can be performed at ease, and it’s also free of pollutants.

scholarly journals Facile one-pot green synthesis of Ag–ZnO Nanocomposites using potato peeland their Ag concentration dependent photocatalytic properties

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Fahad A. Alharthi ◽  
Abdulaziz Ali Alghamdi ◽  
Nabil Al-Zaqri ◽  
Hamdah S. Alanazi ◽  
Amjad Abdullah Alsyahi ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Photocatalytic Degradation ◽  
Reaction Medium ◽  
Cost Effective ◽  
Hexagonal Wurtzite Structure ◽  
Xrd Analysis ◽  
Photocatalytic Properties ◽  
Sem Images ◽  
One Pot ◽  
Vis Spectroscopy

AbstractHerein, a facile green synthesis route was reported for the synthesis of Ag–ZnO nanocomposites using potato residue by simple and cost effective combustion route and investigated the photocatalytic degradation of methylene blue (MB) dye. In the preparation potato extract functioned as a biogenic reducing as well as stabilizing agent for the reduction of Ag + , thus eliminating the need for conventional reducing/stabilizing agents. Ag–ZnO nanocomposites with different Ag mass fractions ranging from 2 to 10% were characterized by using XRD, FT-IR, XPS, SEM, TEM, and UV–Vis spectroscopy. XRD analysis revealed that the as prepared Ag–ZnO nanocomposites possessed high crystallinity with hexagonal wurtzite structure. TEM and SEM images showed that the Ag–ZnO nanocomposites in size ranging from 15 to 25 nm have been obtained, and the particle size was found to increase with the increase in percentage of Ag. FTIR results confirmed the characteristics band of ZnO along with the Ag bands. XPS analysis revealed a pair of doublet with peaks corresponding to Ag and a singlet with peaks corresponding to ZnO. With the increase of concentration of Ag in ZnO, the intensity of NBE emission in the PL spectra was observed to be decrease, resulted to the high photocatalytic activity. Photocatalytic properties of Ag–ZnO nanocomposites evaluated against the MB dye under visible-light irradiation showed superior photodegradation of ~ 96% within 80 min for 2% Ag–ZnO nanocomposites. The apparent reaction rate constant for 2% Ag–ZnO nanocomposites was higher than that of other nanocomposites, which proved to be the best photocatalyst for the maximum degradation of MB. Furthermore, various functional parameters such as dosing, reaction medium, concentration variation were performed on it for better understanding. The enhancement in photocatalytic degradation might be due to the presence of Ag nanoparticles on the surface of ZnO by minimizing the recombination of photo induced charge carriers in the nanocomposites.

Fe(III) Induced Behavior of Hydrothermally Synthesized Tin Dioxide Nanoparticles

2015 ◽  
Vol 749 ◽  
pp. 186-190
Author(s):  
Ajaib Singh ◽  
Astakala Anil Kumar ◽  
Ashok Kumar ◽  
Jitendra Kumar
Keyword(s):  
Crystallite Size ◽  
Tin Dioxide ◽  
Hydrothermal Process ◽  
Magnetic Behavior ◽  
Average Crystallite Size ◽  
Cost Effective ◽  
Rutile Phase ◽  
Progressive Increase ◽  
Lattice Parameter ◽  
Cell Parameters

We report structural, optical and magnetic behavior of polyvinylpyrrolidone (PVP) capped iron containing tin dioxide (SnO2) nanoparticles synthesized via facile cost effective, environmentally benign, low temperature hydrothermal process. X-ray diffraction pattern of pristine SnO2 revealed the formation of tetragonal rutile phase with lattice parameter, a = 0.479 nm, c = 0.323 nm; crystallite size being about 3 nm. The incorporation of iron resulted in progressive increase of unit cell parameters and average crystallite size, despite the fact that Fe3+ ion has lower ionic radius than Sn4+. The high resolution electron micrographs revealed the [110] preferred crystal orientation.

scholarly journals Silver Nanoparticles Loaded Activated Carbon Synthesis Using Clitorea Ternatea Extract for Crystal Violet Dye Removal

2021 ◽  
Vol 3 (1) ◽  
pp. 26-36
Author(s):  
Mohamad Aizad Mohd Mokhtar ◽  
Roshafima Rasit Ali ◽  
Eleen Dayana Mohamed Isa
Keyword(s):  
Silver Nanoparticles ◽  
Activated Carbon ◽  
Adsorption Capacity ◽  
Crystal Violet ◽  
Dye Adsorption ◽  
Average Crystallite Size ◽  
Cost Effective ◽  
Xrd Analysis ◽  
Leather Industry ◽  
Ag Nps

Dyes are coloured compound which are widely used in textile, painting, rubber, cosmetics, plastics and leather industry to colour their products. However, the irresponsibility of certain manufacturer results in producing dye waste and channel it to water resources had become one of the biggest challenges in water pollution. In this study, an effective solid adsorbent derived from sustainable sources for adsorption capacity study was produced which is silver nanoparticles loaded activated carbon (Ag NPs – AC) to remove crystal violet (CV) dye. Adsorption process are cost – effective, simple and flexible with various dye pollutants. Silver nanoparticles (Ag NPs) was synthesized from Clitorea Ternatea flower extract that utilizes functions as stabilizing agents for silver nitrate (AgNO3) to promotes environmental friendly with no toxic chemicals produced and loaded in activated carbon (AC). Characterization of Ag NPs was analysed using UV-Visible which correspond to peak at 408 nm and XRD analysis. Four peaks values for silver at 2θ of 38.19°, 44.43°, 64.57°, 77.43° and average crystallite size of Ag NPs and Ag NPs – AC were calculated to be 16.11 nm and 36.13 nm respectively that were obtained from XRD pattern. The adsorption capacity of Ag NPs – AC was analysed and the optimum conditions were determined using different parameters which are the Ag NPs - AC ratio (1.0 g), contact time (240 min), adsorbent dosage (30 mg) and pH of CV dye (10). The highest percentage removal of CV dye using Ag NPs – AC was recorded up to 97% at 240 min with 30 mg dosage. Ag NPs – AC as adsorbent is a promising advanced materials in removing water pollutants with viable conditions and can applied in the wastewater treatment industry.

Review on Methodologies Used in the Synthesis of Metal Nanoparticles: Significance of Phytosynthesis Using Plant Extract as an Emerging Tool

2020 ◽  
Vol 26 (40) ◽  
pp. 5188-5204
Author(s):  
Uzair Nagra ◽  
Maryam Shabbir ◽  
Muhammad Zaman ◽  
Asif Mahmood ◽  
Kashif Barkat
Keyword(s):  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Plant Extracts ◽  
Biomedical Applications ◽  
Noble Metals ◽  
Cost Effective ◽  
Green Technology ◽  
Critical Parameters ◽  
Nanosized Particles ◽  
Preparation Methods

Nanosized particles, with a size of less than 100 nm, have a wide variety of applications in various fields of nanotechnology and biotechnology, especially in the pharmaceutical industry. Metal nanoparticles [MNPs] have been synthesized by different chemical and physical procedures. Still, the biological approach or green synthesis [phytosynthesis] is considered as a preferred method due to eco-friendliness, nontoxicity, and cost-effective production. Various plants and plant extracts have been used for the green synthesis of MNPs, including biofabrication of noble metals, metal oxides, and bimetallic combinations. Biomolecules and metabolites present in plant extracts cause the reduction of metal ions into nanosized particles by one-step preparation methods. MNPs have remarkable attractiveness in biomedical applications for their use as potential antioxidant, anticancer and antibacterial agents. The present review offers a comprehensive aspect of MNPs production via top-to-bottom and bottom-to-top approach with considerable emphasis on green technology and their possible biomedical applications. The critical parameters governing the MNPs formation by plant-based synthesis are also highlighted in this review.

Green Synthesis and Spectroscopic Studies of Ag-rGO Nanocomposites for Highly Selective Mercury (II) Sensing

2018 ◽  
Vol 9 (1) ◽  
pp. 101-108 ◽  
Author(s):  
Shubhangi J. Mane-Gavade ◽  
Sandip R. Sabale ◽  
Xiao-Ying Yu ◽  
Gurunath H. Nikam ◽  
Bhaskar V. Tamhankar
Keyword(s):  
Green Synthesis ◽  
Color Change ◽  
Limit Of Detection ◽  
Aqueous Media ◽  
Suitable Condition ◽  
Cost Effective ◽  
Spectroscopic Studies ◽  
Calibration Plot ◽  
First Time

Introduction: Herein we report the green synthesis and characterization of silverreduced graphene oxide nanocomposites (Ag-rGO) using Acacia nilotica gum for the first time. Experimental: We demonstrate the Hg2+ ions sensing ability of the Ag-rGO nanocomposites form aqueous medium. The developed colorimetric sensor method is simple, fast and selective for the detection of Hg2+ ions in aqueous media in presence of other associated ions. A significant color change was noticed with naked eye upon Hg2+ addition. The color change was not observed for cations including Sr2+, Ni2+, Cd2+, Pb2+, Mg2+, Ca2+, Fe2+, Ba2+ and Mn2+indicating that only Hg2+ shows a strong interaction with Ag-rGO nanocomposites. Under the most suitable condition, the calibration plot (A0-A) against concentration of Hg2+ was linear in the range of 0.1-1.0 ppm with a correlation coefficient (R2) value 0.9998. Results & Conclusion The concentration of Hg2+ was quantitatively determined with the Limit of Detection (LOD) of 0.85 ppm. Also, this method shows excellent selectivity towards Hg2+ over nine other cations tested. Moreover, the method offers a new cost effective, rapid and simple approach for the detection of Hg2+ in water samples.

Sign in / Sign up

Export Citation Format

Share Document