نتایج جستجو برای: pt extraction

تعداد نتایج: 211741  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم پایه 1390

در این کار تحقیقاتی، نانو ذرات پلاتین قرار گرفته بر روی پایه ی سیلیکا با استفاده از روش سل-ژل سنتز شد. ابتدا یک سل پایدار سیلیکا با استفاده از تترا اتیل اورتو سیلیکات تهیه شده، سپس مقادیر مختلفی از دی آمین دی نیترو پلاتین (pt(nh3)2(no2)2) به عنوان پیش ماده پلاتین به سل سیلیکا اضافه گردید. نمونه ها در 70 درجه سانتیگراد خشک و پس از آن به مدت 2 ساعت در 500 درجه سانتیگراد کلسینه شدند. اثر افزایش غل...

Journal: :The Journal of chemical physics 2009
Z Bayindir P N Duchesne S C Cook M A MacDonald P Zhang

The surface structural characteristics and electronic behavior of three platinum nanoparticle (NP) samples prepared with tertiary amine (Pt-TA), primary amine (Pt-PA), and thiol (Pt-SR) molecules were studied using Pt 4f, 5d, and S 2p x-ray photoelectron spectroscopy (XPS), Pt L(3)-edge x-ray absorption spectroscopy (XAS), and theoretical projected local density of states (l-DOS) calculations. ...

The interaction between [Pt(phen)(pyrr-dtc)]NO3 (where phen = 1,10-phenanthroline and pyrr-dtc =pyrrolidinedithiocarbamat) with human serum albumin (HSA) was studied by fluorescence, UV–vis absorption, circular dichroism (CD) spectroscopy and molecular docking technique under like physiological condition in Tris–HCl buffer solution at pH 7.4. UV-Vis absorption spectroscopy indicates that the pro...

Steam reforming of methanol can be considered as an attractive reaction aiming at hydrogen production for PEM fuel cells. Although Cu/Al-contained catalysts are considerably evaluated in this reaction, further evaluation is essential to evaluate the impact of some promoters like Pt in order to find a comprehensively optimized catalyst. Pt promoter is employed with different methods in this ...

In this study, a simple strategy was described for the synthesis of Pt-SWCNTs conductive nanocomposite by microwave heated polyol method and nanocomposite characterized by EDS, FESEM, and XRD method. The Pt nanoparticles were decorated at the surface of SWCNTs with a diameter of 22.3 nm. The synthesized nanocomposite was used for modification of the carbon paste electrode (CPE) in the presence ...

Journal: :Journal of the American Chemical Society 2016
Tania V Darnton Bryan M Hunter Michael G Hill Stanislav Záliš Antonín Vlček Harry B Gray

A d(8)-d(8) complex [Pt2(μ-P2O5(BF2)4](4-) (abbreviated Pt(pop-BF2)(4-)) undergoes two 1e(-) reductions at E1/2 = -1.68 and Ep = -2.46 V (vs Fc(+)/Fc) producing reduced Pt(pop-BF2)(5-) and superreduced Pt(pop-BF2)(6-) species, respectively. The EPR spectrum of Pt(pop-BF2)(5-) and UV-vis spectra of both the reduced and the superreduced complexes, together with TD-DFT calculations, reveal success...

2018
Hsiang-I Tsai Lijuan Jiang Xiaowei Zeng Hongbo Chen Zihuang Li Wei Cheng Jinxie Zhang Jie Pan Dong Wan Li Gao Zhenhua Xie Laiqiang Huang Lin Mei Gan Liu

The clinical applications of platinum-based antitumor agents are still largely limited by severe side effects as well as multidrug resistance (MDR). To solve these problems, we developed an 1,2-diaminocyclohexane-platinum(II) (DACHPt)-loaded nanoparticle (NP-TPGS-Pt) by self-assembly of poly(amidoamine)-polyglutamic acid-b-D-α-tocopheryl polyethylene glycol 1000 succinate (PAM-PGlu-b-TPGS) and ...

Journal: :International Journal Of Research In Vocational Studies 2022

It is important to undertake research at the location of PT. Perta Samtan Gas Field Extraction Plant Prabumulih with Podzolik soil type (yellow gravel clay) and analysis in order prevent work accidents risk fire caused by leakage current gas processing extraction installation. Direct measurement resistance value used as basis for methodology, which followed literature study background informati...

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2009
Yoshihide Fujigaki Masanori Sakakima Yuan Sun Tomoyuki Fujikura Takayuki Tsuji Hideo Yasuda Akira Hishida

BACKGROUND We examined whether dedifferentiation is necessary for cell division of proximal tubule (PT) cells after acute PT injury. METHODS Rats were injected with a low (0.2 mg/kg) or high (4 mg/kg) dose of uranyl acetate (UA) to induce acute PT injury. Proliferating PT cells were labelled with bromodeoxyuridine (BrdU) before sacrifice. Renal tissues were examined by double labelling of Brd...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1390

هدف از این مطالعه طراحی یک روش کلی برای سنتز یک سری از کمپلکس های دو هسته ای متقارن سیکلومتاله شده پلاتین (ii) بوده که دارای یک لیگاند پل زن(1,2-bis[bis(pentafluoro-phenyl)phosphino]ethane),dfppe, است. از واکنش cis-[pt(r)2(sme2)2]، که در آنr= para-tolyl ، با یک اکی والان از لیگاند benzo[h]quinoline,bhq، در استون محصول [pt(r)(bhq)(sme2)] که در آن r= para-tolyl بدست می آید. همچنین از واکنش 5/0 اک...

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