Sami Publishing Company
Asian Journal of Nanoscience and Materials
2645-775X
2588-669X
3
3
2020
07
01
The study of antibacterial properties of iron oxide nanoparticles synthesized using the extract of lichen Ramalina sinensis
157
166
EN
Roya
Safarkar
Department of Biology, Ardabil Branch, Islamic Azad University, Ardabil, Iran
royasafarkar@yahoo.com
Gholamreza
Ebrahimzadeh Rajaei
0000-0002-6787-5472
Department of Chemistry, Ardabil Branch, Islamic Azad University, Ardabil, Iran
farzad_rajaei@yahoo.com
Shayan
Khalili-Arjagi
PhD Student in Environmental Pollution, North Tehran Branch, Islamic Azad University, Tehran, Iran
shayan_yashar@yahoo.com
10.26655/AJNANOMAT.2020.3.1
In this work, the synthesis of iron oxide nanoparticles (NPs) was done by the extract of <em>Ramalina sinensis.</em> Co-precipitation method was usedto synthesize the nano-particles, which is very fast, low cost, and eco-friendly. For the green synthesis of the iron oxide nanoparticles, the distilled extract of <em>Ramalina sinensis</em>was utilized. Also, to confirm the synthesis of the nanoparticles, some techniques such as UV-Vis spectrophotometry, XRD, FT-IR, and FESEMEDX were used. In addition the antimicrobial activity of biosynthetic magnetite nanoparticles against bacterial strainswas evaluated. The uniform spherical nature of the iron oxide nanoparticles with the particle size 31.74 to 53.91 nm was observed in the FESEM images. In the spectrum obtained from the spectrophotometer, the peak at 310<strong>±</strong>5 nm indicated the electron transfer from oxygen to the iron. The iron oxide NPs depicted effective antibacterial probably against Gram-positive bacteria<em> Staphylococcus aureus</em>and Gram-negative bacteria<em> Pseudomonas aeruginosa.</em> Based on the obtained results, it can be stated that the powerful approach of green synthesis of magnetic iron oxide NPs using <em>Ramalina sinensis</em> has led to producingthe nanoparticles with high antimicrobial potential.
Green synthesis,Lichen,Iron oxide,Nanoparticles,antibacterial
https://www.ajnanomat.com/article_105816.html
https://www.ajnanomat.com/article_105816_083718cd51ed689d8b639d8f7c146c57.pdf
Sami Publishing Company
Asian Journal of Nanoscience and Materials
2645-775X
2588-669X
3
3
2020
07
01
Eco-friendly 2,4-D dimethylamine herbicide delivery system using synthesized nano-matrix
167
188
EN
Itodo Ugbede
Happiness
Department of Chemistry, Federal University of Science and Technology, P.M.B. 2373 Makurdi, Nigeria
itodohu@gmail.com
Raymond
Wuana
Department of Chemistry, Federal University of Agriculture, P.M.B. 2373 Makurdi, Nigeria
raynewton73@gmail.com
Nnamonu
Lami
Department of Chemistry, Federal University of Agriculture, P.M.B. 2373 Makurdi, Nigeria
lami.nnamonu@gmail.com
Sha'ato
Rufus
Department of Chemistry, Federal University of Agriculture, P.M.B. 2373 Makurdi, Nigeria
rshaato@gmail.com
10.26655/AJNANOMAT.2020.3.2
This study used chitosan as a capping agent and L-ascorbic acid as reducing agent to prepare copper nanoparticles encapsulated with 2,4-D dimethylamine herbicide <em>via</em> a green chemical reduction method to improve its herbicidal activity and reduce the negative environmental impacts associated with its application. Characterization of the synthesized CuCtsNPs and 2,4-D-CuCtsNPs was carried out using the following techniques; transmission electron microscopy (TEM), fourier transform- infra-red (FT-IR), scanning electron microscopy (SEM), energy-dispersive x-ray (EDX), powder x-ray diffraction (PXRD), differential scanning calorimeter (DSC), thermogravimetric and differential thermal analysis (TGA/DTA). The maximum absorption peak of CuCtsNPs was observed around 560 nm while that of 2,4-D-CuCtsNPs at 558 nm. The yield of CuCtsNPs was at the range of 40-92% and encapsulation efficiency of the 2,4-D-CuCtsNPs formulationwas 93%. Debye- Scherer’s equation was used to calculate the average crystalline size of the synthesized CuCtsNPs and 2,4-D-CuCtsNPs. The values were 38.78 nm (CuCtsNPs) and 54.93 nm (2,4-D-CuCtsNPs) respectively. The SEM images revealed the particle size of 21-56 nm for CuCtsNPs and 25-69 nm for 2,4-D-CuCtsNPs. The results obtained from the DSC and TGA curves of CuCtsNPs and 2,4-D-CuCtsNPs showed that the formulations exist in crystalline state and were thermally stable up to 401.73 °C. Aqueous release studies for the formulation were carried out in three different pH media and two agricultural soils. Leaching profile of the loaded CuCtsNPs through the soil layer (UAM and CAPS) demonstrated that the UAM soil had higher value for 2,4-D (58.67%) than in CAPS soil 40.78%. This study formulated an environmentally friendly herbicide delivery nano-matrix (CuCtsNPs) for the successful slow release of 2,4-D Dimethylamine herbicide in aqueous medium and agricultural soils.
Green synthesis,Herbicidal delivery,Encapsulation,Soil
https://www.ajnanomat.com/article_105922.html
https://www.ajnanomat.com/article_105922_8bf814c579869df4ec15f1f1229d95df.pdf
Sami Publishing Company
Asian Journal of Nanoscience and Materials
2645-775X
2588-669X
3
3
2020
07
01
Electrochemical deposition of tin doped zinc selenide (SnZnSe) thin film material
189
202
EN
Imosobomeh Lucky
Ikhioya
0000-0002-5959-4427
Nano Research Laboratory, University of Nigeria, Department of Physics and Astronomy, Nsukka, Enugu State, Nigeria
imosobomeh.ikhioya@unn.edu.ng
Donald N.
Okoli
Department of Physics and Industrial Physics, Faculty of Physical Sciences, Nnamdi Azikiwe University, Awka, Anambra State
Azibuike J.
Ekpunobic
Department of Physics and Industrial Physics, Faculty of Physical Sciences, Nnamdi Azikiwe University, Awka, Anambra State
10.26655/AJNANOMAT.2020.3.3
In this research study, the growth of SnZnSe thin film<strong> </strong>materials was carried out using the cationic precursor, which was an aqueous solution of 0.035 mol solution of ZnSO<sub>4</sub>.7H<sub>2</sub>O while the anionic precursor was 0.1 mol solution of selenium metal powder was prepared by dissolving with 4 mL of hydrogen chloride (HCl). The XRD of the films deposited on FTO substrates at different dopant concentration 1%, 2%, 3% and 4% showed the reflection peaks at (220), (221), (300), (310), (311), (222) and (320) with the lattice constant of a=7.189 Ǻ. The SEM results revealed the random distribution of tiny nano-grains on the substrate, the nano-grains were observed to agglomerate due to the presence of large free energy characteristics of small particles. The optical bandgap of the deposited material enhanced from 2.0-2.3 eV as the dopant concentration increased.
Electrochemical deposition,FTO,Dopant concentration,Thin film,SnCl2.2H2O
https://www.ajnanomat.com/article_106358.html
https://www.ajnanomat.com/article_106358_e7fe761e4b5f5f3eb657553c804cdf8e.pdf
Sami Publishing Company
Asian Journal of Nanoscience and Materials
2645-775X
2588-669X
3
3
2020
07
01
An efficient synthesis of 4,4'-(aryl methylene)-bis (1H-pyrazol-5-ol)s over graphene oxide Functionalized pyridine-methanesulfonate as a novel nanocatalyst
203
219
EN
Esmael
Rostami
0000-0002-6512-9951
Department of Chemistry, Payame Noor University, PO BOX 19395-3697 Tehran, Iran
esmaelrostami@gmail.com
Zahra
Kordrostami
Department of Chemistry, Payame Noor University, PO BOX 19395-3697 Tehran, Iran
kordrostamiz@yahoo.com
10.26655/AJNANOMAT.2020.3.4
In this study, graphene oxide was functionalized with 3-aminopyridine to prepare a novel nanocatalyst known as the graphene oxide functionalized pyridine-methanesulfonate (GO@PyH-CH<sub>3</sub>SO<sub>3</sub>). The GO@PyH-CH<sub>3</sub>SO<sub>3</sub> was then employed as an effective nanocatalyst to prepare 4, 4'<strong><em>-</em></strong>(aryl methylene)-bis(1H-pyrazol-5-ols) via one-pot multicomponent condensation reaction of aldehydes with 3-methyl-1-phenyl-1<em>H</em>-pyrazol-5(4<em>H</em>)-one. The best reaction condition involved the use of 0.02 g of the catalyst for 20 min and at 70 °C without using any solvent. Also, the reusability of catalyst and product yield in five runs was examined and no significant change was observed. The leaching test was utilized to assess the nature of the catalytic activity, and the results showed the heterogeneous condition for the catalytic activity. Efficiently and capability of the GO@PyH-CH<sub>3</sub>SO<sub>3</sub> catalyst and other catalysts were compared and showed the superior properties of this catalyst.
Graphene oxide Pyridine methanesulfonate Pyrazole Solvent,free Nanocatalyst Multicomponent reaction
https://www.ajnanomat.com/article_106752.html
https://www.ajnanomat.com/article_106752_526c4dd5ac644db6844d174b3e7bd0fd.pdf
Sami Publishing Company
Asian Journal of Nanoscience and Materials
2645-775X
2588-669X
3
3
2020
07
01
Study on thermal and mechanical characteristics of different composite materials for thermal insulating applications
220
225
EN
Mahmoud E.
Awad
0000-0003-2861-3813
Department of Chemical Engineering, Cairo university, Giza, Egypt
ma7mood.3emad@gmail.com
Esalm
Elsaka
Department of Chemical Engineering, Cairo university, Giza, Egypt
eng.elsaka12@gmail.com
Mona E.
Awad
Department of Mechanical Engineering, Tanta University, Tanta, Egypt
mona.3emad@gmail.com
10.26655/AJNANOMAT.2020.3.5
Composite materials play a vital role in present industrial applications due to their positive properties when compared with the existing or conventional materials used for the same applications such as weight, strength, and flexibility in design. In this work, a laminate was prepared by considering three different fibers including, basalt, carbon, and glass fiber. The order of orientation is three different forms 40°, 60°, and 90°. The stacking of the fibers is of the same degrees and it is subjected to two different sets of tests such as failure analysis and thermal analysis. The results revealed that, increasing basalt fiber content (up to 50% wt.) reduced the thermal conductivity of the composite while reducing the glass fiber content increased the thermal conductivity. In addition, the orientation of 90<sup>o</sup> showed the best tensile strength and elongation over 40<sup>o</sup> and 60<sup>o</sup>.
basalt,Carbon,Glass fiber,Thermal analysis,Failure analysis
https://www.ajnanomat.com/article_107511.html
https://www.ajnanomat.com/article_107511_c905736807130293f555f69fc5302690.pdf
Sami Publishing Company
Asian Journal of Nanoscience and Materials
2645-775X
2588-669X
3
3
2020
07
01
Strontium doped nanohydroxy apatite/reduced graphene oxide nanohybrid is speed up osteogenic differentiation of human mesenchymal stem cells
226
237
EN
Shabnam
Abedin Dargoush
Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
shabnam.abedin@gmail.com
Shadie
Hatamie
College of Medicine, National Taiwan University, 10048, Taipei, Taiwan
shadyhatamy@gmail.com
Shiva
Irani
Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
s.irani@srbiau.ac.ir
Masoud
Soliemani
Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
soleim_m@modares.ac.ir
Hana
Hanaee-Ahvaz
Stem Cell Technology Research Center, Tehran, Iran
hana5122001@yahoo.com
Alireza
Naderi Sohi
Stem Cell Technology Research Center, Tehran, Iran
nanosohi@gmail.com
10.26655/AJNANOMAT.2020.3.6
Graphene based nanocomposites have been used to improve the osteogenic differentiation of stem cells. In this research study, the reduced graphene oxide (rGO) sheets were used as the base material while decorated with strontium doped hydroxyapatite (rGO/HAP/Sr). X-ray differentiation (XRD) analysis and transmission electron microscopy (TEM) were employed to evaluate the size and morphology of the HAP/Sr decorated rGO. Fourier transform infrared (FT-IR) was used to analyze the nanocomposites’functional groups.Raman spectroscopy was used to investigate the possible disorders in rGO/HAP/Sr structure and the number of layers<strong>. </strong>Ion-coupled plasma optical emission spectroscopy (ICP-OES) was used for evaluating the atomic concentrations of the elements (Ca and Sr) in nanocomposites. Likewise, zeta potential of thenanocomposite was determined to be -18.9 mV. To evaluate the cytotoxicity of the nanocomposites, MTT assay was performed. The osteo-inductive potential of the synthesized rGO/HAP/Sr nanocomposites was investigated using the adipose-derived mesenchymal stem cells (ADCs). Osteogenic differentiation was confirmed by measuring the calcium content. The results revealed that the nanocomposites concentrations induce calcium deposition by cells, indicating that the bone differentiation was done successfully. Lastly, it can be concluded that, this nanocomposite, alone, can be used for bone differentiation induction without using any chemical inducers.
Reduced graphene oxide Hydroxyapatite Strontium Adipose,derived mesenchymal stem cells Osteogenic differentiation
https://www.ajnanomat.com/article_107513.html
https://www.ajnanomat.com/article_107513_e70285a3ef71c2eba637011f0eddb490.pdf
Sami Publishing Company
Asian Journal of Nanoscience and Materials
2645-775X
2588-669X
3
3
2020
07
01
An efficient one-pot, four-component synthesis of a series of pyrazolo [3,4-b] pyridines in the presence of magnetic LDH as a nanocatalyst
238
250
EN
Fatemeh
Majidi Arlan
0000-0003-0185-7869
Research Department of Analytical Chemistry, Iranian Academic Center for Education, Culture and Research, P. O. Box 57155-397, Urmia, Iran
majiidi@yahoo.com
Ramin
Javahershenas
0000-0001-5771-7203
Department of Organic Chemistry, Faculty of Chemistry, Urmia University, Urmia 5756151818, Iran
jshbco@yahoo.com
Jabbar
Khalafy
0000-0003-1202-2664
Department of Organic Chemistry, Faculty of Chemistry, Urmia University, Urmia 5756151818, Iran
jkhalafi@yaho.com
10.26655/AJNANOMAT.2020.3.7
In this research study, one-pot, four-component reaction of 3-aryl-3-oxopropanenitriles, 1-aryl-3-methyl-1<em>H</em>-pyrazol-5 (4<em>H</em>) one, arylglyoxals and ammonium acetate using green solvent systems and different catalysts under the reflux conditions afforded a series of the corresponding 4-aroyl-3-methyl-1,6-diaryl-1<em>H</em>-pyrazolo [3,4-<em>b</em>] pyridine-5-carbonitrile derivatives. The best yields (70-85%) were obtained using the metal oxide silica based-matal bifunctional LDH (layered double hydroxide) as a magnet nanocatalyst in EtOH/H<sub>2</sub>O (1:1) under the reflux conditions. This protocol provided mild reaction conditions, good yields, simple workup procedure, easy preparation of nanocatalyst and, products to structurally diverse bicyclic pyrazolo [3,4-<em>b</em>] pyridines, demonstrating biological and pharmacological activities.
Pyrazolo [3,4-b] pyridines Arylglyoxals 1-Aryl-3-methyl-1H-pyrazol-5(4H) one Nanocatalyst One-pot
https://www.ajnanomat.com/article_107766.html
https://www.ajnanomat.com/article_107766_b1a5e20ac4602f8afc417a4f6685a6ee.pdf
Sami Publishing Company
Asian Journal of Nanoscience and Materials
2645-775X
2588-669X
3
3
2020
07
01
Optimized synthesis of AgNPs using aqueous extract of celosia argentea and its practical implications on textile dye decolorization
251
265
EN
Srimathi
Raghavan
Department of Biomedical Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India
srimathiraghavan5@gmail.com
Jannatul Firdous
Siddique
Department of Biomedical Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India
firdousjannatul07@gmail.com
Nivetha
Anbalagan
Department of Biomedical Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India
nivethaanbazagan@gmail.com
Vishnu
Kirthi
Department of Biomedical Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India
bioviski@gmail.com
Mohanasrinivasan
Vaithilingam
Department of Biomedical Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India
v.mohan@vit.ac.in
10.26655/AJNANOMAT.2020.3.8
Quickly developing industrialization is one of the significant benefactors of natural contamination as it presents awful difficulties for the earth and the ordinary citizens. Biological synthesis of the silver nanoparticles (AgNPs) atthe presence of the aqueous leaf extract of <em>Celosia argentea</em>, funtioned as the reducing and capping agent. In this research study, we are reportthe synthesis of the AgNPs with the optimized experimental parameters at the pH. Formation of the AgNPs was confirmed by the UV-Visible spectroscopy and FT-IR analysis. The structural characterization was carried using the SEM-EDX, providing the size of the nanoparticles to be 50-80 nm. The AFM showed the spherical surface topology, the zeta potential whereas, particle size analysis showed stability and the average size was determined to be 50 nm.
AgNp Celosia argentea Response surface methodology SEM,EDX Decolourization
https://www.ajnanomat.com/article_108043.html
https://www.ajnanomat.com/article_108043_a632353244a7c9ef448ad9a2b2c31e0c.pdf