نتایج جستجو برای: mn3o4

تعداد نتایج: 315  

Journal: :international journal of nano dimension 0
n. mosallanejad department of chemistry, firuz abad islamic azad university, p.o. box 74715-115, fars, iran.

a novel nano – sized  manganese (ii) coordination polymer, [{mn(ncs)2(l)(h2o)2}(l)]n  , (1) (l- = 4,4'-bipyridine), have been synthesized by a sonochemical process and characterized by scanning electron microscopy (sem), x-ray diffraction (xrd), ir spectroscopy and elemental analysis.  direct calcination of the single crystals and nano-sized compound 1 at 400 0c under air atmosphere yields...

Journal: :Chemical science 2016
Xing Ding Jianhua Liu Junqi Li Fan Wang Yinghui Wang Shuyan Song Hongjie Zhang

Mn-based nanoparticles have been regarded as a new class of probes for magnetic resonance imaging (MRI), but their low relaxivity is the major obstacle for applications in vivo. Herein, we designed and constructed a multifunctional nanotheranostic (FA-Mn3O4@PDA@PEG) for MRI guided combinatorial chemo-/photothermal therapy (PTT) for cancer. The ultrahigh relaxivity of 14.47 mM-1 s-1 makes the na...

احمدی, ستار, شکوهی, رضا, صمدی, محمد تقی, عسگری, قربان, ونائی تبار*, محمد ,

زمینه و هدف: پلی­وینیل الکل یکی از ترکیبات سخت تجزیه‌پذیر و مقاوم در آب است که در فاضلاب بسیاری از صنایع مشاهده می­گردد و برای سلامتی انسان مضر بوده و حضور آن در منابع آب باعث اختلال در فرایند ته‌نشینی و حذف فلزات سنگین می­گردد. این مطالعه باهدف تعیین کارایی فرآیند Mn3O4/ H2O2 جهت حذف PVA صورت گرفت. روش کار: این پژوهش در مقیاس آزمایشگاهی جهت بررسی متغیرهای مؤثر در فرآیند Mn3O4/H2O2 شامل pH، غلظ...

Mn3O4 nanoparticles has been synthesised from Manganese (II) acetate and Simarouba Glauca leaf extract using microwave heating. This novel method of synthesis of Mn3O4 is fast, low-cost, non-toxic and environment friendly. The synthesised product was characterised by powder X-ray diffraction(XRD),Fourier transform infrared spectroscopy( FT-IR), Ultraviolet-Visible spectroscopy( UV-Visible), X-r...

2013
J. Xiao X. M. Tian C. Yang P. Liu N. Q. Luo Y. Liang H. B. Li D. H. Chen C. X. Wang L. Li G. W. Yang

Mn-based nanoparticles (NPs) have emerged as new class of probes for magnetic resonance imaging due to the impressive contrast ability. However, the reported Mn-based NPs possess low relaxivity and there are no immunotoxicity data regarding Mn-based NPs as contrast agents. Here, we demonstrate the ultrahigh relaxivity of water protons of 8.26 mM(-1) s(-1) from the Mn3O4 NPs synthesized by a sim...

Journal: :Microchemical Journal 2022

The Mn3O4@ZIF-67 (zeolite imidazole framework) composite material on carbon cloth (Mn3O4@ZIF-67/CC) was successfully synthesized by a one-step hydrothermal method and used as an enzyme-free glucose sensor. Benefit from the oxidation of manganese oxide porous structure ZIF material, Mn3O4@ZIF-67/CC sensor showed good sensing performance with excellent sensitivity 3421.0 μA mM−1 cm−2, wide linear...

Journal: :MATEC web of conferences 2023

Surface defects have a positive effect on the improvement of electrocatalytic performance due to ability introduce half-metallicity into selected semiconductors. Herein, we prepare defect-rich Ni-doped Mn3O4 (Ni-Mn3O4) material by simple hydrothermal and impregnation method. Ni-Mn3O4 exhibits unique morphology consisting ultrathin nanoarrays nanoflowers embellished at top, which endows with lar...

2009
Y. Mei R. G. Pautler

Introduction: There are many neurodegenerative diseases that cause abnormalities in the lysosome including Alzheimer’s, Tay-Sachs, and Sandhoff disease. In these diseases, cellular irregularities such as oxidative stress and excessive macromolecule accumulation disrupt the membrane integrity of the lysosome, causing the organelle to lose its acidity. We hypothesize that magnetic resonance imagi...

Journal: :Ceramics International 2022

The study highlights the corrosion behavior of untreated and treated tantalum with addition trimanganese tetraoxide (Mn3O4) nanoparticles in simulated inflammatory media. anodic layer was produced on pure by anodization electrolytes composed ammonium fluoride, ethylene glycol, water. Nanoparticles were deposited uniformly surface anodized electrophoretic deposition (EPD) method. results reveale...

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