Surfactant Assisted Sonochemical Synthesis and Characterization of Gadolinium Doped Zinc Oxide Nanoparticles

Khajuria, Heena; Ladol, Jigmet; Singh, Rajinder; Khajuria, Sonika; Khajuria, Haq N.

doi:10.17344/acsi.2015.1558

Cited by 16 publications

(5 citation statements)

References 29 publications

(30 reference statements)

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“…Out of 595 cases, 74% were found in large intestine, 25% in the gastric region while only 1% was present in small intestine. Similar results were reported by Khujuria et al [12] from northern part of India wherein, they reported that the maximum number of polyps were present in large intestine (78.43 %) followed by stomach with 16.67%. Determining the prevalence of gastrointestinal neoplasms in various anatomical sites can be an important factor to select the favorable modality of screening.…”

Section: Discussionsupporting

confidence: 89%

Histopathological Profile of the Gastrointestinal Polyps in Kashmir Valley

Ashraf¹,

Yasin²,

Khan³

et al. 2018

IJIMS

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Introduction: A gastrointestinal (GI) polyp is a discrete mass protruding into the lumen of GI Tract projecting above the plane of the mucosal surface .Polyp may be neoplastic and neo-neoplastic in nature. Determining the potential risk of malignancy of the polyp is very important for the purpose of line of treatment. The polyp size and histological types are important factors for development of cancers in polyps.Materials and Methods: This was a five year observational study conducted from 2012-2016. All the patients diagnosed with true Gastro-intestinal polyps enrolled in Sher-i-Kashmir Institute of Medical Sciences, Kashmir were analyzed. Data regarding the clinico-pathological parameters was collected. Gastrointestinal polyps were grouped as per age, location, number, presence and absence of stalk, presence and absence of dysplasia; and histological type. The data was analyzed using the statistical software SPSS version V 20.Results: Among 595 patients reported, 373 (62.7%) were males and 222 (37.3%) were females. The age of the patients ranged from 1 to 90 years. Mean age was 40 years .Majority of the polyps ( 74%) were found in large intestine. 63.19% were non-neoplastic and 36.8% were neoplastic. 90.76% percent of the patients presented with single polyps . Sessile polyps were seen in 90.76%. Majority of cases had adenomatous polyps (36.8%), followed by hyperplastic polyps (30.92%). The sub types of the adenomatous polyps were tubulovillious with 56.22 % followed by tubular and villious type with 28.31% and 15.06 %respectively. Among adenomatous polyps, 62.10 % were with dysplasia while 37.90% were without dysplasia. Four cases of Familial Adenomatous polyposis (FAP) were observed. 15 patients presented with 9 synchronous and 6 metachronous lesions . Conclusion:The high prevalence of adenomatous polyps in our study warrants need of screening for early detection and prevention of colorectal carcinomas. Genetic and molecular screening evaluation may also have a huge impact on understanding the mechanism of neoplastic polyps.

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Section: Discussionsupporting

confidence: 89%

Histopathological Profile of the Gastrointestinal Polyps in Kashmir Valley

Ashraf¹,

Yasin²,

Khan³

et al. 2018

IJIMS

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“…The decrease in the energy density values is ascribed to the splitting of the energy levels and hence the decrease in bandgap of the materials. by Heena et al and Murmu et al [43,44]. The grain size (GS) was estimated from the histogram distribution curve as indicated in figures 3(a)-(f).…”

Section: Resultsmentioning

confidence: 99%

Multifunctional properties of gadolinium doped annealed zinc oxide nanoparticles

Tummapudi

Modem²,

Kiran³

2023

Phys. Scr.

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In the present study, Zn1-x Gdx O (x=0.02) nanoparticles have been synthesized by chemical route (Sol-Gel Method) using polyvinyl alcohol (PVA) as chelating agent. These materials are annealed from 500oC -1000°C with a step size of 100oC temperature. The multifunctional properties of the prepared materials have been studied in view of their structural, morphological, optical, magnetic, and mechanical characteristics. X-ray diffraction (XRD) studies have shown that ZnO (zinc oxide) nano powders are crystallized in the Wurtzite hexagonal structure, and the structural parameters have been determined. Transmission Electron Microscopy (TEM) study conducted on a sample annealed at 900°C revealed nanoparticles size as~22nm. Spherical nanoparticles with irregular particle morphology was observed from SEM (Scanning Electron Microscopy) images. Energy dispersive spectroscopy (EDS) accorded the existence of elementary components of the prepared samples. The characteristic peaks of ZnO are evident from Fourier transform infrared spectroscopy (FTIR) study. The bandgap energies from UV-Visible studies levied to decrease from 3.31 eV to 3.13 eV with annealing temperatures. Near band edge emission exhibited redshift from Photoluminescence (PL) study with the increase in annealing temperature. The Dilute Magnetic Semiconductor (DMS) nature was observed on the studied materials, making them promising materials for multifunctional spin-based applications. The study of Mechanical properties suggests that these materials may find applications as cutting fluids, nanofillers and nanolubricant additives.

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“…It has been found that the type of source of the inner transition metal and amino acids has an influence on the shape and grain size of the nanocomposite [13,14]. It was further observed that different types of organic fuels (urea and alanine or their mixture) have an influence on the temperature of combustion, crystallographic structure, morphology and resulting particle sizes [6]. It has also been found that the particle size increased with increasing calcination temperature in the combustion synthesis (from 25 nm at 800 ºC to 200 nm at 1100 ºC) [4].…”

Section: Introductionmentioning

confidence: 97%

“…Among the important lanthanides oxides, Gd2O3 gains a significant importance due to its good crystallographic stability up to 2325 °C, high mechanical strength, and excellent thermal conductivity together with relatively high dielectric constant, wide band gap [2], and versatile and tunable magnetic properties [3]. Nanomaterials based on Gd2O3 have been used for example in the solid-state lasers [4], in the solid oxide fuel cells as an electrolyte [5], in the temperature sensors [6] or as the contrast agents in the magnetic resonance imaging [7].…”

Section: Introductionmentioning

confidence: 99%

“…Amino acid-nitrate process use amino acid as a fuel and nitrate (or nitrate hydrate) as an oxidant in the presence of source of the inner transition metal [11,12]. Different amino acids have already been used in the combustion processes for preparation of nanomaterials based on lanthanides, such as for https://doi.org/10.37904/nanocon.2019.8590 example alanine [4,6,13,14], glycine [5,13,14] or serine [13,14]. It has been found that the type of source of the inner transition metal and amino acids has an influence on the shape and grain size of the nanocomposite [13,14].…”

Section: Introductionmentioning

confidence: 99%

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Amino-(Gd)nitrate Combustion Process: The Influence of an Amino Acid on the Final Product

Kuzníková¹,

Peikertová²,

Hundáková³

et al. 2020

NANOCON 2019 Conference Proeedings

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Combustion methods are a promising strategy for the lanthanide oxide nanomaterials preparation. They are environmentally friendly, they have feasible experimental setup and can be easily upscaled. As a part of our broader research dealing with amino acid-nitrate processes, several samples of the Gd2O3, synthesized with four amino acids (alanine, glycine, proline, and serine) were prepared to observe an influence of amino acids on the final product's nature and morphology. All of the four samples were prepared via thermal decomposition of a transient complex formed in situ from Gd(NO3)3·6H2O and selected amino acid. The resulting products were characterized by the X-ray powder diffraction analysis, which demonstrated an influence of amino acids on the crystal structure of the final Gd2O3 nanocrystallites. The elemental composition and morphology of the samples of Gd2O3 were examined by the scanning electron microscopy with energy dispersive X-ray spectroscopy. We also measured particle size and particle size distribution as all final products (Gd2O3) had tendency to form agglomerates. Fourier-transform infrared spectroscopy and X-ray powder diffraction analysis revealed that glycine and proline, used as an organic fuel, yields the cubic structure of Gd2O3 nanocrystallites.

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Surfactant Assisted Sonochemical Synthesis and Characterization of Gadolinium Doped Zinc Oxide Nanoparticles

Cited by 16 publications

References 29 publications

Histopathological Profile of the Gastrointestinal Polyps in Kashmir Valley

Histopathological Profile of the Gastrointestinal Polyps in Kashmir Valley

Multifunctional properties of gadolinium doped annealed zinc oxide nanoparticles

Amino-(Gd)nitrate Combustion Process: The Influence of an Amino Acid on the Final Product

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