Synthesis of bis(4-hydroxycoumarin)methanes using nano-CuO/CeO2 as recyclable catalyst
Bita
Baghernejad
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
author
Saman
Parhizgar
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
author
text
article
2021
eng
Coumarin derivatives have been widely utilized as agrochemicals, cosmetics, and pigments, demonstrating broad spectrum biological and pharmacological activities. In this research study, we reported an efficient and environmentally benign one-pot multi–component reaction for the synthesis of bis(4-hydroxylcoumarin) methanes derivatives from the reaction of 4-hydroxycoumarin and aromatic aldehydes in the presence of a catalytic amount of nano- CuO/CeO2. The advantages of this method are including, good yields (92-97%), short reaction times, simple work-up and reusable catalyst. The catalyst could be recycled and reused for five times without much loss in its activity. As is evident from this research study, the best efficiency for the synthesis of bis(4-hydroxylcoumarin) methanes is achieved with the nano-CuO/CeO2 catalyst in the shortest time.
Asian Journal of Nanoscience and Materials
Sami Publishing Company
2645-775X
4
v.
3
no.
2021
178
187
https://www.ajnanomat.com/article_129149_cde7e26c6251c05855c7bc035a3d96d5.pdf
dx.doi.org/10.26655/AJNANOMAT.2021.3.1
Hydrothermal synthesis of ZnO nanoparticles and comparison of its adsorption characteristics with the natural adsorbent (mango peel)
Elnaz
Rezaei-Aghdam
Department of Chemistry, Ardabil Branch, Islamic Azad University, Ardabil, Iran
author
Ali
Shamel
Department of Chemistry, Ardabil Branch, Islamic Azad University, Ardabil, Iran
author
Mohammad
Khodadadi-Moghaddam
Department of Chemistry, Ardabil Branch, Islamic Azad University, Ardabil, Iran
author
Gholamreza
Ebrahimzadeh Rajaei
Department of Chemistry, Ardabil Branch, Islamic Azad University, Ardabil, Iran
author
Sahar
Mohajeri
Department of Chemistry, Ardabil Branch, Islamic Azad University, Ardabil, Iran
author
text
article
2021
eng
This study focuses on the utilization of ZnO (as synthetic) and mango peel (natural adsorbent) to remove blue 221 dye from aqueous solutions. First, ZnO nanoparticles (NPs) were synthesized and detected using the descriptor-based techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), N2 adsorption/desorption isotherms (BET), and X-ray diffraction (XRD). Various operational parameters including adsorbent concentration, pH, adsorbent dose, contact time, and stirring speed were investigated. The obtained kinetic results demonstrated great compatibility of the pseudo-second-order model with the experimental data. The effects of thermodynamic parameters were calculated to confirm the endothermic, spontaneous and physical nature of adsorption process. Langmuir and Freundlich isotherm models were utilized to fit the obtained equilibrium data. Freundlich model was found sufficient to explain the adsorption of blue 221 dye by ZnO NPs and mango peel. The results indicated that the ZnO NPs performed better in blue 221 dye removal as compared with mango peel. The mean size of ZnO NPs was found to be 22.16 nm. The specific surface area of ZnO NPs was obtained 26.85 m2.g-1 and pore volume and pore-size were 0.0581 cm3.g-1 and 1.22 nm, respectively. The maximum adsorption capacity of blue 221 dye on ZnO NPs and mango peel was estimated as 133.33 and 476.19 mg.g-1, respectively.
Asian Journal of Nanoscience and Materials
Sami Publishing Company
2645-775X
4
v.
3
no.
2021
188
200
https://www.ajnanomat.com/article_130705_fc72af23366f3723085b74dab6d85e25.pdf
dx.doi.org/10.26655/AJNANOMAT.2021.3.2
Investigation on physical properties of carbon nanotubes prepared by mechanothermal method
Seyed Oveis
Mirabootalebi
Department of Materials & Metallurgy, Shahid Bahonar University of Kerman, Kerman, Iran
author
Gholam Hosein
Akbari Fakhrabadi
Department of Materials & Metallurgy, Shahid Bahonar University of Kerman, Kerman, Iran
author
Reza
Mirahmadi Babaheydari
Department of Materials & Metallurgy, Shahid Bahonar University of Kerman, Kerman, Iran
author
text
article
2021
eng
Carbon nanotubes (CNTs) have specific physical properties that make them one of the ideal nano-materials for electronics, magnetic, and optical applications. Produced CNTs via mechanothermal method have a springy and coil-like structure, affecting their physical characteristics and distinguishes them from other carbon nanotubes. In this research study, the optical and magnetic properties of fabricated carbon nanotubes by mechanothermal method were investigated. For this purpose, carbon nanotubes were synthesized by heat treatment of ball-milled graphite powders at 1400 ˚C in the atmosphere of argon. The quality and structure of milled-graphite and the CNTs were investigated using X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM) and Raman spectroscopy. Then, the optical and magnetic properties of the fabricated CNTs were assessed by UV-VIS spectrometer and vibrating-sample magnetometer (VSM), respectively. The results of the absorption spectra revealed that the products had not any absorption peak at the visible regime. Furthermore, magnetization curves indicate that coercivity (Hci), magnetization (Ms), and retentivity (Mr) of the CNTs were found to be 84.183 G, 20.531, and 0.73511 emu/g, respectively.
Asian Journal of Nanoscience and Materials
Sami Publishing Company
2645-775X
4
v.
3
no.
2021
201
212
https://www.ajnanomat.com/article_130706_248d4c8f4305e9b3eda731e818eebb74.pdf
dx.doi.org/10.26655/AJNANOMAT.2021.3.3
A review: Application and production of nanoencapsulation in the food sector
Monika
Patel
Department of Food and Nutrition, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow-226025, U.P, India
author
Sunita
Mishra
Department of Food and Nutrition, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow-226025, U.P, India
author
text
article
2021
eng
Particle encapsulation is a standard process within the food industry that consists of encapsulating particles within a protective layer, to shield a sensitive ingredient or nucleus from adverse reactions. This consists of encapsulating small particle cores within a protective wall this protective layer may preserve the organoleptic and physico-chemical properties of the products also on improve the palatability of volatile odorous ingredients. Encapsulation of flavors and aromas may be a rapidly expanding process within the food industry. Many aroma compounds must to be converted into solid products before its use as flavouring agents. Nano and microencapsulation technology is very promising area in food industry, which can have an excellent impact on a many category of products including functional foods, packaging, preservatives, antioxidants, flavors and fragrances. Finally, a number of the main challenges within the design and fabrication of nanocapsules & its application in food sector and characterization are highlighted.
Asian Journal of Nanoscience and Materials
Sami Publishing Company
2645-775X
4
v.
3
no.
2021
213
228
https://www.ajnanomat.com/article_130843_d5aa49e68fdce36ce9bc0a879e6b321c.pdf
dx.doi.org/10.26655/AJNANOMAT.2021.3.4
Toxicity testing of indocyanine green and fluorodeoxyglucose conjugated iron oxide nanoparticles with and without exposure to a magnetic field
Perihan
Unak
Ege University, Institute of Nuclear Sciences, Department of Nuclear Applications, Bornova Izmir, 35100, Turkey
author
Rachel
Hepton
Aston University, School of Life and Health Sciences, Aston Triangle, Birmingham, B4 7ET, United Kingdom
author
Max
Harper
Aston University, School of Engineering and Applied Sciences, Aston Triangle, Birmingham, B4 7ET, United Kingdom
author
Volkan
Yasakci
Ege University, Institute of Nuclear Sciences, Department of Nuclear Applications, Bornova Izmir, 35100, Turkey
author
Gillian
Pearce
Aston University, School of Engineering and Applied Sciences, Aston Triangle, Birmingham, B4 7ET, United Kingdom
author
Steve
Russell
Aston University, School of Life and Health Sciences, Aston Triangle, Birmingham, B4 7ET, United Kingdom
author
Omer
Aras
Memorial Sloan Kettering Cancer Centre, Department of Radiology, New York, USA
author
Akin
Oguz
Memorial Sloan Kettering Cancer Centre, Department of Radiology, New York, USA
author
Julian
Wong
University Hospital Singapore, Cardiothoracic and Vascular Surgery Department, Singapore
author
text
article
2021
eng
Iron nanoparticles (MNPs) are known to induce membrane damage and apoptosis of cancer cells. In our study we determined whether FDG coupled with iron oxide magnetic nanoparticles can exert the same destructive effect on cancer cells. This research study presents data involving NIC-H727 human lung, bronchus epithelial cells exposed to conjugated fluorodeoxyglucose conjugated with iron-oxide magnetic nanoparticles and indocyanine green (ICG) dye (FDG-MNP-ICG), with and without the application of a magnetic field. Cell viability inferred from MTT assay revealed that FDG-MNPs had no significant toxicity towards noncancerous NIC-H727 human lung, bronchus epithelial cells. However, percentage cell death was much higher using a magnetic field, for the concentration of FDG-MNP-ICC used in our experiments. Magnetic field was able to destroy cells containing MNPs, while MNPs alone had significantly lower effects. Additionally, MNPs alone in these low concentrations had less adverse effects on healthy (non-target) cells.
Asian Journal of Nanoscience and Materials
Sami Publishing Company
2645-775X
4
v.
3
no.
2021
229
239
https://www.ajnanomat.com/article_131085_9bb275f23fb7fadf6da9e01e4d253e87.pdf
dx.doi.org/10.26655/AJNANOMAT.2021.3.5
Synthesis WO3 nanoparticle via the electrochemical method and study its super-hydrophobicity properties
Farideh
Piri
Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, 4537138791, Iran
author
Maria
Merajoddin
Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, 4537138791, Iran
author
Somayyeh
Piri
Iranian Academic Center for Education, Culture & Research (ACECR), Zanjan Branch, Zanjan, Iran
author
Zahra
Mokarian
Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, 4537138791, Iran
author
text
article
2021
eng
This work introduces a simple method to prepare WO3 nanoparticles via tungsten rod electrooxidation in the presence of NaCl solution as an electrolyte. In this process, WO3 nanoparticles with sizes between 10nm and 20 nm were prepared and characterized using X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive X-ray spectroscopy (EDX) techniques. WO3 nanoparticles are used to modify polysiloxane surface. The WO3 coated polysiloxane surface showed a very high-water contact angle of 158°.
Asian Journal of Nanoscience and Materials
Sami Publishing Company
2645-775X
4
v.
3
no.
2021
240
245
https://www.ajnanomat.com/article_131087_e1dc25b360d519bde7f9ce61efbc4edc.pdf
dx.doi.org/10.26655/AJNANOMAT.2021.3.6
The reaction of curcumin-hydrazine and its effect on bone marrow mesenchymal stem cells
Sabah
Salahvarzi
Department of Chemistry, Faculty of Science, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
author
Keyhan
Mohammadpour
Department of Chemistry, Faculty of Science, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
author
Zeynab
Dadgar
Department of biology, Faculty of Science, Arak University, Arak, Iran
author
text
article
2021
eng
In this work, the interaction between curcumin and hydrazine was studied in three different conditions: In the presence of ultrasonic waves, in the absence of ultrasonic waves, and while refluxing and the effects of the produced materials on the livability of bone marrow mesenchymal stem cells were investigated. Various methods including FT-IR, 1H NMR and 13C NMR were utilized to characterize the material. The results revealed that cell treatments with 40 μM dose of all three samples after 24 h were caused to the more biological ability of rat bone marrow mesenchymal stem cells (MSCs). This indicated that these compounds (curcumin-hydrazine) are effective in the livability of bone marrow mesenchymal stem cells (MSCs).
Asian Journal of Nanoscience and Materials
Sami Publishing Company
2645-775X
4
v.
3
no.
2021
246
254
https://www.ajnanomat.com/article_131809_d27e43d9c306ab5fa4fa0655f2054808.pdf
dx.doi.org/10.26655/AJNANOMAT.2021.3.7