Application of Optimised Nanocarbon Materials and Biofertilisers as a Potent Superfertiliser: Towards Sustainable Agriculture Production

2021 ◽  
Vol 13 (5) ◽  
pp. 812-819
Author(s):  
Mohamed Helmi Hadj Alouane ◽  
Faheem Ahmed ◽  
Nermin Adel Hussein El Semary ◽  
Munirah F. Aldayel ◽  
Fatimah H. Alhaweti ◽  
...  
Keyword(s):  
Environmental Sustainability ◽  
Carbon Nanomaterials ◽  
Growth Parameters ◽  
Precipitation Method ◽  
Great Promise ◽  
Sem Images ◽  
Nanocarbon Materials ◽  
Co Precipitation ◽  
Carbon Based Nanomaterials ◽  
Dose Dependent

In this work, carbon-based nanomaterials including; carbon nanotubes (CNT) and graphene were combined with biofertilisers and tested their impact on germination of Hordeum vulgare. The interaction between nanomaterials and biofertilisers was analysed. Scanning electron microscopy (SEM) images revealed that the surface of algal cells was covered with carbon nanomaterials including graphene and CNTs. Raman studies showed the characteristic band of graphene, CNTs and Algal cells. The combination of carbon nanomaterials with biofertilizers resulted in significantly better growth than with nanomaterials individually. To prepare a more effective superfertiliser, zinc ferrites (ZnFe2O4) nanoparticles were added to the nanomaterials-biofertilisers combination. These zinc ferrites nanofertilisers had a size ranging from 8–12 nm and were prepared by co-precipitation method and used at two different doses. The results showed that the growth parameters were increased most significantly with addition of 0.25 ml of ZnFe2O4 nanoparticles. Increasing the dose caused a less increase in growth parameters. These results indicated that increase in growth parameters was dose-dependent. These results demonstrated a great promise for novel formulation of superfertiliser that significantly enhanced plant growth without pollution or excessive use of harmful chemicals for better food security and environmental sustainability.

The Preparation and Characterization of LiFe0.98Mn0.02PO4/C by Spray-Drying and Low Temperature Reduction Route

2012 ◽  
Vol 581-582 ◽  
pp. 525-528
Author(s):  
Jia Feng Zhang ◽  
Bao Zhang ◽  
Xue Yi Guo ◽  
He Zhang Chen ◽  
Jian Long Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Spray Drying ◽  
Xrd Analysis ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Sem Images ◽  
Temperature Reduction ◽  
Co Precipitation ◽  
Low Temperature Reduction

The LiFe0.98Mn0.02PO4/C was synthesized by spray-drying and low temperature reduction route using FePO4•2H2O as precursor, which was prepared by a simple co-precipitation method. The LiFe0.98Mn0.02PO4/C sample was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and electrochemical measurements. The XRD analysis and SEM images show that sample has the good ordered structure and spherical particle. The charge-discharge tests demonstrate that the powder has the better electrochemical properties, with an initial discharge capacity of 162.1 mAh•g−1 and 155.8 mAh•g−1 at current density of 0.1 C and 1C, respectively. The capacity retention reaches 99.4% after 100 cycles at 1C.

scholarly journals PREPARATION AND CHARACTERIZATION OF CALCIUM FLUORIDE NANO PARTICLES FOR DENTAL APPLICATIONS

2018 ◽  
Vol 6 (1) ◽  
pp. 338-346 ◽  
Author(s):  
Mohammad S. Al-Ajely ◽  
Kareema M. Ziadan ◽  
Rafed. M. Al-Bader
Keyword(s):  
Elemental Composition ◽  
Calcium Fluoride ◽  
Structural Characteristics ◽  
Nano Particles ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Sem Images ◽  
Glass Type ◽  
Co Precipitation ◽  
Dental Applications

The aim of the present study was to prepare a calcium fluoride (CaF2NP) Nano particle which is used in dental composites as dental filling compo glass type. CaF2 Nano powders were prepared using a Co-precipitation method using binary liquid. Crystal Structural characteristics and Elemental composition of (CaF2NP) Nanoparticles were predicted by X-ray diffraction (XRD), which showed crystalline peaks of   this material. Elemental composition was obtained from EDX analysis.  Morphology and diameters of the Nano fibers were studied by scanning electron Microscope (SEM). The size of the particles was also measured from SEM images about 58 ± 21 nm.

The Thermodynamic Analysis of Ni1/2Mn1/2(OH)2 Prepared by Hydroxide Co-Precipitation Method

2013 ◽  
Vol 643 ◽  
pp. 104-107
Author(s):  
Yi Jie Gu ◽  
Qing Gang Zhang ◽  
Yun Bo Chen ◽  
Hong Quan Liu ◽  
Yan Min Wang ◽  
...  
Keyword(s):  
Thermodynamic Analysis ◽  
Ph Value ◽  
Chelating Agent ◽  
Ammonia Concentration ◽  
Precipitation Method ◽  
Mixed Solution ◽  
Sem Images ◽  
Precipitation System ◽  
Co Precipitation

The thermodynamic analysis of Ni2+-Mn2+-NH3-OH--H2O in co-precipitation system was carried out, and the precursor Ni1/2Mn1/2(OH)2 was prepared by hydroxide co-precipitation method. The analysis showed that the best pH value of mixed solution is 11 and the ammonia concentration is 0.4 mol/L, when NaOH is precipitating agent and ammonia is chelating agent. When the pH value is 11, the SEM images confirm that the morphology of Ni1/2Mn1/2(OH)2 is the best.

Prominent Visible Light Photocatalytic and Water Purification Activity of PbS/CdS/CdO Nanocomposite Synthesized via Simple Co-Precipitation Method

2019 ◽  
Vol 9 (2) ◽  
pp. 278-284
Author(s):  
Mohammad Sabet ◽  
Marziyeh Mohammadi ◽  
Fatemeh Googhari
Keyword(s):  
Cadmium Sulfide ◽  
Water Solution ◽  
Hexagonal Phase ◽  
Wide Band ◽  
Precipitation Method ◽  
Cubic Phase ◽  
Distilled Water ◽  
Hydrothermal Route ◽  
Sem Images ◽  
Co Precipitation

Background: Due to unique chemical and physical properties and potential application in many fields, nanostructured materials have attracted many attentions. Cadmium sulfide (CdS) is a semiconductor that has a wide band gap of 2.42 eV at room temperature and can be served in solar cells and photoluminescence devices. Cadmium sulfide (CdS) is a kind of attractive semiconductor material, and it is now widely used for optoelectronic applications. CdS nano and microstructures can be synthesized via different chemical methods such as microwave-solvothermal synthesis, surfactant-ligand coassisting solvothermal method and hydrothermal route. Also different morphologies of this semiconductor such as dendrites, nanorods, sphere-like, flakes, nanowires, flower-like shape triangular and hexagonal plates, were synthesized. Methods: To synthesis of the nanocomposite, a simple co-precipitation method was served. In briefly, 0.1 g of Pb(NO3)2 was dissolved in the distilled water (Solution 1). Also different aqueous solutions were made from dissolving different mole ratio of Cd(NO3)2.6H2O respect to the lead source in the water (Solution 2). Two solutions were mixed together under vigorous stirring and then S2- solution (0.02 g thiourea in the water) was added to the Pb2+/Cd2+ solution. After that 0.1 g of CTAB as surfactant was added to the final solution. Finally to the synthesis of both sulfide and oxide nanostructures, NaOH solution was added to the prepared solution to obtain pH= 10. Distilled water and absolute ethanol were used to wash the obtained precipitate and then it dried at 80 °C for 8 h. Results: From the XRD pattern it was found that the peaks placed at 24.9°, 27°, 44.1°, 48°, 52°, 54°, 57.8°, 66.8°, 71.2° are associated to CdS compound with hexagonal phase (JCPDS=00-001-0780) that belong to (100), (002), (110), (103), (112), (201), (202), (203), (211) Miller indices respectively. The Other peaks belong to PbS with hexagonal phase (JCPDS=01-078-1897), and CdO with cubic phase (JCPDS=00-001-1049). From SEM images, it was found by choosing the mole ratio to 1:1, very small and uniform particles were achieved. By increasing Pb2+/Cd2+ mole ratio to 1:2, very tiny particles aggregated together were achieved. Conclusion: The results showed that the product can adsorb extra 80% of heavy metal ions from the water. So it can be said that the nanocomposite can be used in the water treatment due to its high photocatalytic and surface adsorption activities. In other words, it can remove heavy metals from the water and also decompose organic pollutions.

scholarly journals Experimental Study of TiO2 Nanoparticles Fabrication by Sol-gel and Co-precipitation Methods for TiO2/SnO2 Composite Thin Film as Photoanode

2019 ◽  
Vol 20 (1) ◽  
pp. 61 ◽  
Author(s):  
E. Endarko ◽  
Siti Rabi’atul Adawiyah
Keyword(s):  
Thin Film ◽  
Smooth Surface ◽  
Tio2 Thin Film ◽  
Sol Gel ◽  
Composite Films ◽  
Pure Tio2 ◽  
Composite Thin Film ◽  
Precipitation Method ◽  
Sem Images ◽  
Co Precipitation

Sol-gel and coprecipitation methods successfully prepared titanium dioxide (TiO2) powders with anatase structure. The TiO2 powders are then used to fabricate pure TiO2 thin-film or mixed with SnO2 powders for the TiO2/SnO2 composite thin film. Furthermore, the structural, morphological, as well as the optical properties of films were also investigated. The results showed that the synthesized thin-film of TiO2 powders by sol-gel method obtained better crystallinity and microstructure compared to the synthesized thin film by co-precipitation method. In the DSSC system, these features are needed to increase the electron mobility that responsibility for transport and recombination of photoexcited electrons. SEM images exhibited the smooth surface and uniform in particle size obtained by the addition of SnO2 powders in composite films. The composite thin film also indicated a higher transmittance value. Keywords: sol-gel,co-precipitation,anatase, composite.

scholarly journals Zinc and cobalt nano ferrites and their potential applications in environmental sustainability

2020 ◽  
Author(s):  
Leena V. Hublikar ◽  
Sharanabasava V Ganachari ◽  
Jayachandra S. Yaradoddi ◽  
Aasim U. Mokashi
Keyword(s):  
Transition Metals ◽  
Environmental Sustainability ◽  
Combustion Method ◽  
Structure Type ◽  
Precipitation Method ◽  
Magnetic Oxide ◽  
Potential Applications ◽  
Fundamental Research ◽  
Co Precipitation ◽  
Average Size

Abstract Fundamental research and industrially applied research, currently depend on magnetic oxide nanoparticles and ferromagnetic oxides due to their extensive applications for electronic, magnetic, optical sensor and absorptive activities. ferromagnetic substances mainly contain different type of Ferrite. Ferrite material constitutes, Iron oxide (Fe2O3) and divalent metal oxides of Transition metals like cobalt, nickel etc. The key objective of this paper is to study the impending applications of nano - ferrites doped with bivalent transition metals with their properties. Low-Temperature Self-Propagating combustion method was used to synthesize the particles. Synthesized Zinc and Cobalt Nano ferrites from the chemical co-precipitation method were found to be of 20 to 90 nm in average size, and comparative study of their properties using the results of Fourier-transform spectroscopy (FTIR) and X-ray powder diffraction (XRD). The Field Emission Scanning Electron Microscope (FESEM) confirms the conception of ferrite nanoparticles with a structure type cubic spinel. Further comparative Sensing studies showed that the sample displays variation in resistance when gases are passed over the surface, and the change in resistance is observed.

Synthesis and Gas Sensing Properties of SnO2-CuO Nanocomposites

2013 ◽  
Vol 645 ◽  
pp. 129-132 ◽  
Author(s):  
Jantasom Khanidtha ◽  
Suttinart Noothongkaew ◽  
Supakorn Pukird
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Precipitation Method ◽  
Monoclinic Structure ◽  
X Ray Diffraction ◽  
Sem Images ◽  
X Ray ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Co Precipitation

SnO2-CuO nanocomposites have been synthesized with the simple co-precipitation method for gas sensing properties. Sn and CuO powder were the starting materials. The synthesized products were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that SnO2-CuO nanocomposites have a tetragonal and monoclinic structure, respectively. SEM images verify that the some microballs are up to 10 µm and nanorods have a diameter range from 10-100 nm, while length ranges a few micrometers. The nanocomposite products were highly sensitivity to CO2gas at room temperature.

Comparison between Solid State Reaction and Coprecipitation Method of Titanium Oxide Addition on the YBa2Cu3Oδ Ceramics

2020 ◽  
Vol 1010 ◽  
pp. 187-193
Author(s):  
Ali Arlina ◽  
Nadiah Ameram ◽  
Nik Alnur Auli
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Single Phase ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Orthorhombic Crystal ◽  
Sem Images ◽  
Orthorhombic Crystal Structure ◽  
Oxide Addition ◽  
Co Precipitation

In this work, comparison of TiO2 additions on the physical properties of YBa2Cu3Oδ superconductor system with nominal starting compositions at x= 0, 1, 2, and 5 wt.% was studied derived via solid state reaction and co-precipitation method. The samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The result from XRD shown that all the samples were polycrystalline for solid state reaction, while single phase appear for co-precipitation methods. The intensity of the peak become higher with increasing amount of TiO2 addition indicating the presence of increased amount of the unreacted in the samples. The refine lattice parameters indicated that all the samples have an orthorhombic crystal structure without occurrence of orthorhombic-tetragonal phase transformation. Furthermore, from SEM images for solid state reaction and co-precipitation method showed that the grain size of the samples decreased with TiO2 increased. Small addition of TiO2 derived from co-precipitation method enhanced the YBCO microstructures.

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

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.

scholarly journals Production and Utilization of Surface Engineered SPIONS for Enhanced Removal of Dye from Water

2020 ◽  
Vol 2 (1) ◽  
pp. 20
Keyword(s):  
Environmental Remediation ◽  
Dye Removal ◽  
Metal Oxide Nanoparticles ◽  
Clinical Applications ◽  
Precipitation Method ◽  
Great Promise ◽  
Oxide Nanoparticles ◽  
Contaminated Water ◽  
Co Precipitation ◽  
Removal Studies

SPIONs, being the only metal oxide nanoparticles clinically approved, have shown a great promise in the various clinical applications, including environmental remediation, specifically water treatment. In this study, SPIONs are produced by the chemical co-precipitation method used for dye removal studies, where isotherm kinetics were studied. In conclusion, it was shown that both naked and coated SPIONs successfully demonstrated the removal of crystal violet from the water, thereby enabling to apply SPIONs for the treatment of contaminated water with textile dyes.

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