scholarly journals One pot three component synthesis of substituted 3,4,6,7-tetrahydro-3,3,6,6-tetramethyl-9,10-diphenylacridine-1,8(2H,5H,9H,10H)-diones catalyzed by efficient In2O3-SiO2

2021 ◽  
Author(s):  
Deepak Totaram Tayde ◽  
Madhukar E. Navgire ◽  
Machhindra K. Lande
Keyword(s):  
High Yield ◽  
Reusable Catalyst ◽  
X Ray Diffraction ◽  
One Pot ◽  
Synthetic Strategy ◽  
Transmission Electron ◽  
Catalytic Material ◽  
Ir Transmission ◽  
Ft Ir ◽  
Temperature Programmed

Abstract A convenient, One pot synthesis of heterocyclic nucleous acridine derivative compound has been achieved those are having very much attention in medicinal chemistry because of their extensive application in biology. The mixture of dimedone, substituted benzaldehyde and aniline were catalyzed by efficient In2O3-SiO2 heterogeneous reusable catalyst in ethanol to obtain the desired acridine derivatives with good yield. Hydrothermal method used to synthesize In2O3-SiO2 catalytic material. This catalytic material were characterized by using X-ray diffraction spectroscopy (XRD), scanning electron microscopy (SEM), Energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), Transmission electron microscope (TEM), Temperature-programmed desorption (NH3-TPD) and Brunauer-Emmett-Teller (BET). Our synthetic strategy features high yield, simple work up procedure, non-toxic, clean, and easy recovery and reusability of the catalytic system.

NiFe2O4@SiO2 nPr@glucose catalyzed synthesis of novel 5-pyrazolin-1,2,4- triazazolidine-3-ones (thiones)

2020 ◽  
Vol 17 ◽  
Author(s):  
Mohammad Nikpassand ◽  
Zahra Pourkarim
Keyword(s):  
Electron Microscope ◽  
Reaction Times ◽  
High Yield ◽  
Reusable Catalyst ◽  
One Pot ◽  
X Ray ◽  
Transmission Electron ◽  
Elemental Analyses ◽  
Ft Ir ◽  
High Yields

Introduction: NiFe2O4@SiO2nPr@glucose catalyzed synthesis of novel 5-pyrazolin-1,2,4-triazazolidine-3- ones (thiones). Materials and Methods: Amino glucose‐ functionalized silica‐ coated NiFe2O4 nanoparticles (NiFe2O4@SiO2 nPr@glucose amine or NiFe2O4@SiP@GA) were synthesized and characterized by X-ray powder diffraction (XRD), X-ray spectroscopy (EDX), transmission electron microscope (TEM), field emission scanning electron microscope (FE-SEM), vibrating sample magnetometry (VSM) and fourier transform infrared spectroscopy (FT-IR). Results and Discussion: NiFe2O4@SiP@GA supply an eco-friendly procedure for the synthesis of some novel 5- pyrazolin-1,2,4-triazazolidine-3-ones or thiones through one-pot reaction of thiosemicarbazide (hydrazinecarbothioamide) and synthetized pyrazole carbaldehydes. These compounds were obtained in high yields in short reaction times. The catalyst could be easily recovered and reused for six cycles with almost consistent activity. The structures of the synthesized 5-pyrazolin-1,2,4-triazazolidine-3-ones or thiones were confirmed by 1H NMR, 13C NMR and FTIR spectral data and elemental analyses. Conclusion: In conclusion, we have investigated NiFe2O4@SiO2nPr@amino glucose as a new, eco-friendly, inexpensive, mild and reusable catalyst for the synthesis of 5-pyrazolin-1,2,4-triazazolidine-3-ones or thiones. High yield, a simple work‐ up procedure, adherence to the basics of green chemistry, environmental friendly and based on natural ingredients, ease of separation and recyclability of the magnetic catalyst and waste reduction are some advantages of this method.

Carbon Nanotube Templated Growth of the Nano-Crystalline NaY Zeolite

2011 ◽  
Vol 194-196 ◽  
pp. 594-597
Author(s):  
Ke Tang ◽  
Xin Hong ◽  
Jin Gang Qi
Keyword(s):  
Structural Characteristics ◽  
Internal Diameter ◽  
X Ray Diffraction ◽  
Nay Zeolite ◽  
Nano Crystalline ◽  
Transmission Electron ◽  
Ir Transmission ◽  
Ft Ir ◽  
Nay Zeolites ◽  
Nanosized Zeolites

FAU-type(NaY) zeolites nanocrystals have been synthesized through crystallization of gel in mesoporous system of carbon nanotubes(CNTS) with a internal diameter of 20~30 nm. Investigation by using X-ray diffraction (XRD), Fourier transform infrared (FT-IR), transmission electron microscope (TEM) shows that the nanocrystals possess the typical nanosized zeolites structural characteristics which is different from those of microsized zeolites.

scholarly journals Green Synthesis of Carbon Dots from Grapefruit and Its Fluorescence Enhancement

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Xinzhu Huo ◽  
Yuxuan He ◽  
Shiqi Ma ◽  
Yingying Jia ◽  
Jiaming Yu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Carbon Sources ◽  
Carbon Quantum Dots ◽  
One Pot ◽  
Transmission Electron ◽  
Three Samples ◽  
Structure Morphology ◽  
Ir Transmission ◽  
Ft Ir ◽  
Doped Carbon Dots

In this study, undoped carbon quantum dots (UCQDs, UCQDs-peel) and N-doped carbon dots (NCQDs) were prepared by a facile one-pot environmentally friendly hydrothermal method using grapefruit as carbon sources in the absence and presence of area, respectively. The structure, morphology, and fluorescence properties of three samples were characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and photoluminescence (PL). It was found that three types of CQDs could emit blue fluorescence with different intensities when irradiated with ultraviolet light. Compared to the luminescence properties of UCQDs, NCQDs, and UCQDs-peel, it can be seen that the fluorescence intensity of NCQDs was strongest due to the presence of NH and C-N bonds.

scholarly journals Synthesis, Characterization, and Tribological Behavior of Oleic Acid Capped Graphene Oxide

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Tiedan Chen ◽  
Yanqiu Xia ◽  
Zhengfeng Jia ◽  
Zhilu Liu ◽  
Haobo Zhang
Keyword(s):  
Graphene Oxide ◽  
Oleic Acid ◽  
Friction And Wear ◽  
Graphite Powder ◽  
X Ray Diffraction ◽  
Wear Properties ◽  
Transmission Electron ◽  
Alpha Olefin ◽  
Ir Transmission ◽  
Ft Ir

Graphene oxide (GO) nanosheets were prepared by modified Hummers and Offeman methods. Furthermore, oleic acid (OA) capped graphene oxide (OACGO) nanosheets were prepared and characterized by means of Fourier transform-infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and X-ray diffraction (XRD). At the same time, the friction and wear properties of OA capped graphite powder (OACG), OACGO, and oleic acid capped precipitate of graphite (OACPG) as additives in poly-alpha-olefin (PAO) were compared using four-ball tester and SRV-1 reciprocating ball-on-disc friction and wear tester. By the addition of OACGO to PAO, the antiwear ability was improved and the friction coefficient was decreased. Also, the tribological mechanism of the GO was investigated.

Poly(L-Lactide) Composite Nanofibers Incorporating POSS-MWNTs

2011 ◽  
Vol 175-176 ◽  
pp. 341-344 ◽  
Author(s):  
Byoung Suhk Kim ◽  
Kyu Oh Kim ◽  
Ick Soo Kim
Keyword(s):  
Composite Nanofibers ◽  
X Ray Diffraction ◽  
Multiwalled Carbon ◽  
Raman Analysis ◽  
X Ray ◽  
Polyhedral Oligosilsesquioxane ◽  
Hybrid Nanofibers ◽  
Transmission Electron ◽  
Ir Transmission ◽  
Ft Ir

We report the electrospun poly(L-lactide) (PLA) nanofibers incorporating polyhedral oligosilsesquioxane (POSS)-modified multiwalled carbon nanotubes (MWNTs). FT-IR, transmission electron microscopy (TEM) and Raman analysis confirmed the existence of POSS macromers bonded to the MWNTs as an extra phase. The thermal and microstructure properties of the PLA hybrid nanofibers with POSS-modified MWNTs were investigated by thermogravimetric analysis (TGA) and Wide-angle X-ray diffraction (WAXD).

scholarly journals An Efficient Synthesis of 1,8-Dioxo-Octahydroxanthenes Derivatives Using Heterogeneous Ce-ZSM-11 Zeolite Catalyst

2018 ◽  
Vol 13 (3) ◽  
pp. 436 ◽  
Author(s):  
Rameshwar R. Magar ◽  
Ganesh T. Pawar ◽  
Sachin P. Gadekar ◽  
Machhindra Karbhari Lande
Keyword(s):  
Zeolite Catalyst ◽  
Bet Surface Area ◽  
High Yield ◽  
Efficient Synthesis ◽  
X Ray Diffraction ◽  
One Pot ◽  
Efficient Catalyst ◽  
Temperature Programmed ◽  
The One ◽  
Work Up

The Ce-ZSM-11 zeolite has been used as an efficient catalyst for the one pot synthesis of 1,8-dioxo-octahydroxanthene derivatives from aromatic aldehyde and 5,5-dimethyl-cyclohexane-1,3-dione under reflux condition. The catalyst was characterized by Powder X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Fourier Transform Infrared Spectroscopy (FTIR), Brunauer-Emmer-Teller (BET) surface area analysis, and Temperature Programmed Desorption (TPD) techniques. This method provides several advantageous such as use of inexpensive catalyst, simple work-up procedure, high yield of desired product and reusability of catalyst. Copyright © 2018 BCREC Group. All rights reservedReceived: 5th January 2018; Revised: 25th May 2018; Accepted: 27th May 2018How to Cite: Magar, R.R., Pawar, G.T., Gadekar, S.P., Lande, M.K. (2018). An Efficient Synthesis of  1,8-Dioxo-Octahydroxanthenes Derivatives Using Heterogeneous Ce-ZSM-11 Zeolite Catalyst. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (3): 436-446 (doi:10.9767/bcrec.13.3.2062.436-446)Permalink/DOI: https://doi.org/10.9767/bcrec.13.3.2062.436-446 

scholarly journals Ag2O/GO/TiO2 Composite Nanostructure: an efficient heterogeneous catalyst for one pot synthesis of Bis (dihydropyrimidinone) and tetrahydro-4H-chromenes derivatives

2021 ◽  
Author(s):  
Fatemeh Samandi Zadeh ◽  
Mohammad Kazem Mohammadi ◽  
Ayeh Raeiatzadeh ◽  
Neda Hasanzadeh
Keyword(s):  
Condensation Reaction ◽  
Aromatic Aldehydes ◽  
Synthesis Methods ◽  
X Ray Diffraction ◽  
One Pot ◽  
Transmission Electron ◽  
One Pot Condensation ◽  
Effective Synthesis ◽  
Ft Ir ◽  
Biginelli Condensation

Abstract The simple and efficient synthesis reaction was used for preparing Bis (dihydropyrimidinone) derivatives through Biginelli condensation reaction of terephthalic aldehyde, 1, 3-dicarbonyl compounds and (thio) urea or guanidine and tetrahydro-4H-chromenes via one pot condensation of aromatic aldehydes, malononitrile and dimedone with Ag2O/GO/TiO2 composite nanostructures as a catalyst. The structural functionalities and morphological observations of catalyst were obtained using characterization techniques of field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), Fourier transfer infrared (FT-IR) spectroscopy and transmission electron microscope (TEM). The structures of Bis (dihydropyrimidinone) and tetrahydro-4H-chromenes confirmed by FT- IR, NMR and mass spectroscopy. Excellent yields of the products, simple reaction process and simple work-up are attractive features of these effective synthesis methods.

A facile one-pot preparation of Bi2O2CO3/g-C3N4 composites with enhanced photocatalytic activity

2019 ◽  
Vol 79 (8) ◽  
pp. 1494-1502 ◽  
Author(s):  
Yongzheng Duan ◽  
Haibo Yao ◽  
Jing Li ◽  
Xili Shang ◽  
Dongmei Jia ◽  
...  
Keyword(s):  
Visible Light ◽  
Photoelectron Spectroscopy ◽  
One Pot ◽  
X Ray ◽  
Enhanced Absorption ◽  
Synthetic Strategy ◽  
Transmission Electron ◽  
Potential Applications ◽  
Ir Transmission ◽  
Catalytic Stability

Abstract Bi2O2CO3 modified graphitic carbon nitride (g-C3N4) nanosheets were prepared by a simple one-pot synthetic strategy. In the presence of ammonium nitrate, different mass ratios of bismuth nitrate/melamine were used to fabricate these catalysts, which were characterized by X-ray diffraction (XRD), N2-physisorption, Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV-vis analysis, and photoluminescence (PL). The catalytic properties of composites were evaluated by photodegrading tetracycline hydrochloride (TC) under visible light irradiation. Among these catalysts, Bi2O2CO3(1.5)/g-C3N4 showed the highest catalytic activity, which was more than 16 times greater than the pristine g-C3N4 material. The improved photocatalytic properties of Bi2O2CO3/g-C3N4 may be due to the formation of a heterojunction between Bi2O2CO3 and g-C3N4, leading to the effective separation of photo-induced carriers and the enhanced absorption of visible light. Furthermore, the Bi2O2CO3/g-C3N4 composites had considerable catalytic stability, which was a key element for their potential applications.

Uniform Bi2O2CO3 hierarchical nanoflowers: solvothermal synthesis and photocatalytic properties

2015 ◽  
Vol 08 (02) ◽  
pp. 1550021 ◽  
Author(s):  
Feng Cao ◽  
Jianmin Wang ◽  
Wanhong Tu ◽  
Xin Lv ◽  
Song Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Diffuse Reflectance Spectroscopy ◽  
Uv Light ◽  
Photocatalytic Properties ◽  
Photocatalytic Decomposition ◽  
High Yield ◽  
X Ray Diffraction ◽  
One Pot ◽  
Transmission Electron ◽  
Uv Visible

Well-defined flowerlike Bi 2 O 2 CO 3 nanostructures were fabricated by a simple one-pot solvothermal method with high yield. The products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy, transmission electron microscopy, nitrogen sorption, photoluminescence spectra and UV–visible diffuse reflectance spectroscopy. The photocatalytic properties of the as-prepared samples were further investigated by photocatalytic decomposition of Rhodamine B (RhB) dye, and it was found that the Bi 2 O 2 CO 3 nanoflowers showed a good photocatalytic activity under UV light. The excellent photocatalytic performance of Bi 2 O 2 CO 3 flowerlike nanostructures is related to its special nanostructure and morphology, indicates its potential application in photocatalysis and nanosensors.

scholarly journals Polyethylenimine-Modified Magnetic Chitosan for the Uptake of Arsenic from Water

2021 ◽  
Vol 11 (12) ◽  
pp. 5630
Author(s):  
Norah Salem Alsaiari ◽  
Fatimah Mohammed Alzahrani ◽  
Khadijah Mohammedsaleh Katubi ◽  
Abdelfattah Amari ◽  
Faouzi Ben Rebah ◽  
...  
Keyword(s):  
Maximum Adsorption Capacity ◽  
X Ray Diffraction ◽  
Arsenic Uptake ◽  
Magnetic Chitosan ◽  
Adsorbent Dosage ◽  
Transmission Electron ◽  
Global Environmental ◽  
Removal Of Heavy Metals ◽  
Ir Transmission ◽  
Ft Ir

The removal of heavy metals from water has become a global environmental problem. Various materials have been applied as adsorbent to remove metals from water. In this field, nanomaterials have been gaining increasing interest due to their exceptional properties. In this work, we discuss the synthesis of a core-shell structure nanocomposite by the modification of magnetic chitosan (CS) (Fe3O4/CS) with polyethylenimine (PEI) to produce Fe3O4/CS/PEI composite for the adsorption of arsenic ions (As(V) and As(III)) from aqueous solution. The synthesized materials were characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), transmission electron microscope (TEM), and vibrating sample magnetometer (VSM). The results indicated the successful combination of three components of the nanocomposite. The adsorption conditions were optimized by studying the effect of different parameters included pH, contact time, initial concentration, and adsorbent dosage. The optimum adsorption pH was found to be 6.7 while the optimum adsorbent dosage was found to be 2.0 and 1.5 g/L for As(III) and As(V), respectively. The removal efficiency for the uptake of As(III) and As(V) ions over Fe3O4/CS/PEI nanocomposite at optimum conditions was found to be 99.5 and 99.7%, respectively. The experimental results were fitted using Freundlich’s and Langmuir’s isotherms. The data were more fitted to Langmuir isotherm providing a suggestion of monolayer adsorption with maximum adsorption capacity equal to 77.61 and 86.50 mg/g for the removal of As(III) and As(V), respectively. Moreover, linear regression coefficient (R2) indicated that the adsorption of arsenic ions over the synthesized magnetic nanocomposite obeyed pseudo 2nd order suggesting the chemisorption process. The reusability of the nanosorbent for arsenic uptake using sodium hydroxide as eluent was also assessed up to five cycles. Interestingly, Fe3O4/CS/PEI nanocomposite can be considered as a promising adsorbent for As ions’ removal from water and should be tested for the removal of other pollutants.

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