Spectroscopic characterization of organic matter transformation during composting of textile solid waste using UV–Visible spectroscopy, Infrared spectroscopy and X-ray diffraction (XRD)

2020 ◽  
Vol 159 ◽  
pp. 105314
Author(s):  
Saloua Biyada ◽  
Mohammed Merzouki ◽  
Karima Elkarrach ◽  
Mohamed Benlemlih
Keyword(s):  
Organic Matter ◽  
Infrared Spectroscopy ◽  
Solid Waste ◽  
Spectroscopic Characterization ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Organic Matter Transformation ◽  
Uv Visible

In Situ Polymerization and Characterization of Poly(ε-caprolactone)/Layered Double Hydroxide Nanocomposites

2012 ◽  
Vol 557-559 ◽  
pp. 371-374
Author(s):  
Lian Liu ◽  
Teng Yu ◽  
Pei Wang ◽  
Guang Shuo Wang
Keyword(s):  
Layered Double Hydroxide ◽  
In Situ Polymerization ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Uv Visible ◽  
Absorbance Peak ◽  
Double Hydroxide

Nanocomposites of poly(ε-caprolactone) (PCL) and layered double hydroxide (LDH) were prepared by in situ polymerization at low LDHs loadings in this work. The resultants were characterized by FTIR spectroscopy, X-ray diffraction (XRD), differential scanning calorimeter (DSC) and UV-visible spectroscopy (UV-vis). FTIR showed that the PCL/LDHs nanocomposites were prepared successfully by in situ polymerization and XRD spectra showed that the crystal structure did not change greatly in the presence of LDHS. DSC results confirmed that LDHs could act as nucleating agents. UV-vis spectra showed that LDHs had stronger absorbance peak than LDH. Moreover, the PCL/LDHs nanocomposites had strong anti-ultraviolet effect by introduction of LDHs into polymer matrix.

scholarly journals Novel NiMgOH-rGO-Based Nanostructured Hybrids for Electrochemical Energy Storage Supercapacitor Applications: Effect of Reducing Agents

Crystals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1144
Author(s):  
Konda Shireesha ◽  
Thida Rakesh Kumar ◽  
Tumarada Rajani ◽  
Chidurala Shilpa Chakra ◽  
Murikinati Mamatha Kumari ◽  
...  
Keyword(s):  
Particle Size ◽  
Cyclic Voltammetry ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Particle Size Analyzer ◽  
Uv Visible

This paper describes the synthesis and characterization of NiMgOH-rGO nanocomposites made using a chemical co-precipitation technique with various reducing agents (e.g., NaOH and NH4OH) and reduced graphene oxide at 0.5, 1, and 1.5 percent by weight. UV-visible spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, a particle size analyzer, and cyclic voltammetry were used to characterize the composite materials. The formation of the NiMgOH-rGO nanocomposite with crystallite sizes in the range of 10–40 nm was inferred by X-ray diffraction patterns of materials, which suggested interlayers of Ni(OH)2 and Mg(OH)2. The interactions between the molecules were detected using Fourier-transform infrared spectroscopy, while optical properties were studied using UV-visible spectroscopy. A uniform average particle size distribution in the range of 1–100 nm was confirmed by the particle size analyzer. Using cyclic voltammetry and galvanostatic charge/discharge measurements in a 6 M KOH solution, the electrochemical execution of NiMgOH-rGO nanocomposites was investigated. At a 1 A/g current density, the NiMgOH-rGO nanocomposites prepared with NH4OH as a reducing agent had a higher specific capacitance of 1977 F/g. The electrochemical studies confirmed that combining rGO with NiMgOH increased conductivity.

scholarly journals Synthesis and Characterization of Dodecylbenzene Sulfonic Acid doped Tetraaniline via Emulsion Polymerization

2012 ◽  
Vol 9 (3) ◽  
pp. 1342-1346 ◽  
Author(s):  
K. Basavaiah ◽  
K. Tirumala Rao ◽  
A. V. Prasada Rao
Keyword(s):  
Sulfonic Acid ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Molar Ratios ◽  
Uv Visible ◽  
Dodecylbenzene Sulfonic Acid ◽  
Diffraction Patterns ◽  
Thermal Stability Of

In this work, we report preparation and characterization of dodecylbenzene sulfonic acid (DBSA) doped tetraaniline via micelles assisted method using ammonium per sulphate (APS) as an oxidant. Here, DBSA act as dopant as well as template for tetraaniline nanostructures. The synthesized DBSA doped tetraaniline have been well characterized by X-ray diffraction patterns, Fourier transform infrared spectroscopy, UV-Visible spectroscopy, Scanning electron microscopy and thermogravimetry. The morphologies of tetraaniline were found to be dependent on molar ratios of N-phenyl-1, 4-phenylenediamine to DBSA. The spectroscopic data indicated that DBSA doped tetraaniline. Thermogravimetry studies revealed that the DBSA doping improved the thermal stability of tetraaniline.

scholarly journals Synthesis and characterization of erbium trioxide nanoparticles as photocatalyzers for degradation of methyl orange dye

2019 ◽  
Vol 12 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Rifat Mohammed Dakhil ◽  
Tayser Sumer Gaaz ◽  
Ahmed Al-Amiery ◽  
Mohd S. Takriff ◽  
Abdul Amir H. Kadhum
Keyword(s):  
Methyl Orange ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Uv Visible ◽  
Methyl Orange Dye ◽  
Microscopy Techniques ◽  
Degradation Of Methyl Orange

Abstract. The present work focuses on the photocatalytic degradation of methyl orange (MO) on erbium trioxide nanoparticles (Er2O3 NPs). In this study, Er2O3 nanoparticles were synthesized and fully characterized via various techniques, including X-ray diffraction, UV–visible spectroscopy and scanning electron microscopy techniques. The results revealed that the photocatalytic activity of the prepared Er2O3 NPs was manifested in MO photodegradation. The optimum efficiency obtained was 16 %.

scholarly journals Preparation of Nano Ink Using Cobalt Ferrite and Barium Titanate for Printed Electronic Devices

2020 ◽  
Vol 3 (10) ◽  
pp. 132-135
Author(s):  
Emy Rose Peter ◽  
Jismon Sebastian ◽  
Swapna S. Nair
Keyword(s):  
Barium Titanate ◽  
Cobalt Ferrite ◽  
Diffraction Method ◽  
Band Gap Energy ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Pure Cobalt ◽  
Uv Visible

Lead in our body is toxic and hazardous. Here leadfree Cobalt ferrite and Barium Titanate inks have been prepared and fabricated. The prepared inks remained stable without agglomeration or condensation during preservation. Cobalt Ferrite and Barium Titanate Nano inks have been characterized using X-ray diffraction method and UV Visible Spectroscopy. By the analysis of X-ray diffraction (XRD), the resultant inks were confirmed to be of pure Cobalt Ferrite and Barium Titanate powders with cubic structure and tetragonal structure respectively. Lattice parameters and grain size have been determined by X-ray diffraction method. UV Visible Spectroscopy analysis has been done to obtain the band gap energy of the prepared inks. The preparation and characterization of Cobalt Ferrite and Barium Titanate Nano inks are comprehensively demonstrated in this paper.

Synthesis and characterization of 1,4-diazophenylenebridged Cu-phthalocyanine polymer

e-Polymers ◽  
2004 ◽  
Vol 4 (1) ◽  
Author(s):  
Cemil Alkan ◽  
Leyla Aras ◽  
Güngör Gündüz
Keyword(s):  
Electrical Conductivity ◽  
Diazonium Salt ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Uv Visible ◽  
Soluble Part

Abstract A novel type of phthalocyanine polymer, 1,4-diazophenylene-bridged Cuphthalocyanine, was prepared from the diazonium salt of diaminobenzene and Cu(II) 1,8,15,22-tetraaminophthalocyanine. The polymer is partially soluble in tetrahydrofuran, dichloromethane, and dimethylformamide. Characterization of the polymer was performed by IR and UV-visible spectroscopy, X-ray diffraction, ash analysis, viscometry, differential scanning calorimetry and thermogravimetric analysis. The molecular weight of the soluble part of the polymer was determined by ebullioscopy. Electrical conductivity of the polymer and its doped samples were determined by the 4-probe technique. It was found that the electrical conductivity increased up to 10-4 S/cm after doping. The redox behaviour of the polymer was investigated utilizing cyclic voltammetry.

scholarly journals Microwave-Assisted Synthesis and Characterization of [Rh2(OAc)4(L)2] Paddlewheel Complexes: A Joint Experimental and Computational Study

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Oscar F. Gonzalez-Belman ◽  
Yazmín Varela ◽  
Marcos Flores-Álamo ◽  
Kazimierz Wrobel ◽  
Silvia Gutierrez-Granados ◽  
...  
Keyword(s):  
Computational Study ◽  
Microwave Assisted Synthesis ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
Experimental Conditions ◽  
X Ray ◽  
Paddlewheel Complexes ◽  
Uv Visible ◽  
Insight Into

The synthesis of four rhodium(II) paddlewheel complexes bearing axial aromatic amines and coumarin ligands, with formula [Rh2(OAc)4(L)2] (L = NH2Mesityl (1), NH2Dip (2), NH2Couma (3), coumarin (4)), prompted by microwave irradiation, was carried out successfully. All of the complexes were characterized by the melting point, elemental analysis, NMR, IR, and UV/Visible spectroscopy. Additionally, the structure of complexes 1-2 and 4 was corroborated by single-crystal X-ray diffraction. Cyclic voltammetry, ESI-MS, and tandem MS analyses were carried out in compound 1 for gaining further insight into its stability. Finally, a DFT study shows that complexes 1–4 are the thermodynamic products, having as intermediates complexes 1′–4′ which, under our experimental conditions, cannot be isolated.

Synthesis and Characterization of Poly(azomethine)/ZnO Nanocomposite Toward Photocatalytic Degradation of Methylene Blue, Malachite Green, and Bismarck Brown

2019 ◽  
Vol 141 (5) ◽  
Author(s):  
S. J. Pradeeba ◽  
K. Sampath
Keyword(s):  
Methylene Blue ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Malachite Green ◽  
Fourier Transform Infrared ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Natural Sunlight ◽  
Uv Visible

This research was carried out based on the significance of protecting the environment by preventing the contamination of water caused from effluents discharge from dyeing industries, effective nanocomposite were prepared to solve this problem. The poly(azomethine), ZnO, and poly(azomethine)/ZnO nanocomposites were prepared and characterized by Fourier transform-infrared spectroscopy, ultraviolet (UV)–visible spectroscopy, powder X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDAX), scanning electron Microscope (SEM), and transmission electron microscopy (TEM) techniques. Methylene blue (MB), Malachite green (MG), and Bismarck brown (BB) were degraded from water using poly(azomethine) (PAZ), zinc oxide (ZnO), PAZ/ZnO (PNZ) nanocomposites as photocatalyst in the presence of natural sunlight. The degradation efficiency and reaction kinetics were calculated, and the outcome of the photocatalytic experiments proved that the PAZ/ZnO nanocomposites reveals excellent photocatalytic activity and effective for decolorization of dye containing waste water than PAZ and ZnO in the presence of natural sunlight. The maximum degradation efficiency 97%, 96%, and 95% was obtained for PNZ nanocomposites at optimum dosage of catalyst as 500 mg and 50 ppm of MB, MG, and BB dye concentration, respectively. The maximum degradation time was 5 h. After photocatalytic study, the samples were characterized by Fourier-transform infrared spectroscopy (FT-IR) and UV–visible spectroscopy.

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