نتایج جستجو برای: 1 and 2 wt nps fe

تعداد نتایج: 17518846  

ژورنال: علوم زمین 2009
علی کنعانیان میرصالح میرمحمدی,

       توده مافیک- اولترامافیک قره آغاج در فاصله 36 کیلومتری شمال باختر ارومیه قرار دارد. این توده از لحاظ سنگ‌شناسی از دو بخش اصلی شامل سنگ‌های مافیک بدون کانی‌سازی و سنگ‌های اولترامافیک غنی از Fe-Ti-P (سنگ‌های FTP) تشکیل یافته است. بخش مافیک به طور غالب حاوی گابروی درشت بلور، میکروگابرو و متاگابرو با مجموعه کانیایی ساده‌ (پلاژیوکلاز+ کلینوپیروکسن و ایلمنیت) و ارتوآمفیبولیت است. بر اساس روابط ...

Journal: :Materials 2016
Silvia Villa Valentina Caratto Federico Locardi Stefano Alberti Michela Sturini Andrea Speltini Federica Maraschi Fabio Canepa Maurizio Ferretti

The enhancement of the photocatalytic activity of TiO₂ nanoparticles (NPs), synthesized in the presence of a very small amount of magnetite (Fe₃O₄) nanoparticles, is here presented and discussed. From X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analyses, the crystallinity of TiO₂ nanoparticles (NPs) seems to be affected by Fe₃O₄, acting as nano-seeds to improve the tetra...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم پایه 1392

a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...

Journal: :Frontiers in Earth Science 2022

Hematite (α-Fe 2 O 3 ) and magnetite (Fe 4 readily accommodate a wide range of minor trace elements from across the periodic table at up to wt.% concentrations. This prompts question whether these common minerals can also host rare earth (lanthanides, Y Sc; REEs)? If so, what is chemical physical nature elements: are they incorporated into oxide crystal structures, or do occur as nanometer-to m...

2007
L. Kustov K. Egeblad M. Kustova T. W. Hansen C. H. Christensen

Mesoporous and conventional Fe-containing ZSM-5 catalysts (0.5–8 wt% Fe) were prepared using a simple impregnation method and tested in NO selective catalytic reduction (SCR) with NH3. It was found that mesoporous Fe-ZSM-5 catalysts exhibit higher SCR activities than comparable conventional catalysts. Furthermore, conventional Fe-ZSM-5 catalysts have maximum activity at ~ 2.5 wt% Fe while for t...

2016
Wan‐Jing Yu Chang Liu Lili Zhang Peng‐Xiang Hou Feng Li Bao Zhang Hui‐Ming Cheng

Carbon nanotubes (CNTs) filled with iron sulfide nanoparticles (NPs) are prepared by inserting sulfur and ferrocene into the hollow core of CNTs followed by heat treatment. It is found that pyrrhotite-11T iron sulfide (Fe-S) NPs with an average size of ≈15 nm are encapsulated in the tubular cavity of the CNTs (Fe-S@CNTs), and each particle is a single crystal. When used as the anode material of...

Journal: :international journal of molecular and clinical microbiology 0
babak sadeghi department of chemistry, tonekabon branch, islamic azad university, tonekabon, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی تنکابن (islamic azad university of tonekabon)

biogenic reduction of silver ion to base metal is quite rapid, readily conducted at room temperature and pressure, and easily scaled up. synthesis mediated by plant extracts is environmentally benign. the objective of this study was to synthesis of silver nanoparticles (ag-nps) using leaves aqueous extract of nasturtium officinale r. br. (no) and its antibacterial activity. x-ray diffraction (x...

2017
Rui Hu Minxue Zheng Jinchang Wu Cheng Li Danqing Shen Dian Yang Li Li Mingfeng Ge Zhimin Chang Wenfei Dong

The combination of radiotherapy (RT) and photothermal therapy (PTT) has been considered an attractive strategy in cervical cancer treatment. However, it remains a challenge to simultaneously enhance the radio-sensitivity of tumor tissue, develop tumor tissue-focused radiation therapies and combine dual therapeutic modalities. In this study, core-shell type magnetic gold (Fe₃O₄@Au) nanoparticles...

2016
Roshanak Khandanlou Gek Cheng Ngoh Wen Tong Chong Saadi Bayat Elnaz Saki

To investigate the influence of pH on the size and distribution of silver nanoparticles (Ag-NPs) as well as the antibacterial activity and catalytic performance of rice straw/silver nanocomposites (RS/Ag-NCs), Ag-NPs were synthesized on the surface of rice straw (RS) with various percentages of Ag-NPs (1.0, 5.0, 10.0, and 20.0 wt.%) under different temperatures and diverse pH values. The ultrav...

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