نتایج جستجو برای: cu tio2

تعداد نتایج: 83606  

Journal: :Catalysts 2023

A photocatalytic effect arises from the electron relaxation of semiconductors. Directing toward reactions is focus studies. Co-catalyst decoration a main way to modulate relaxation, and Cu(II) nanoparticles have been widely studied as an important co-catalyst. However, detailed mechanism still not well known. The current study devoted investigating nanoparticle on relaxations for TiO2 through i...

Journal: :Advanced Optical Materials 2023

A full solution-based method is reported to fabricate multilayer thin film stacks for structural color applications. This in contrast the conventional fabrication methods that require high vacuum processes such as physical vapor deposition and magnetron sputtering, which significantly limits their practical use due cost long processing time. Copper/silicon dioxide/copper (Cu/SiO2/Cu) copper/tit...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پایه 1393

این رساله شامل چهار فصل به شرح زیر است: 1) دربخش اول، از نانوذرات مغناطیسی fe3o4 به عنوان بستری برای ناهمگن کردن کاتالیست همگن cu(acac)2 استفاده شد. اتصال این کمپلکس به بستر توسط طیف سنجی فوتوالکترون (xps) اثبات شد. مشخصه یابی بیشتر با تکنیک های پراش اشعه ی x (xrd)، میکروسکوپ الکترونی روبشی (sem)، میکروسکوپ الکترونی عبوری (tem)، طیف سنجی مادون قرمز تبدیل فوریه (ftir)، کوپل پلاسمای القای (icp)،...

Journal: :Chemical Engineering Journal 2022

The photoactive features of the least common polymorph TiO2, i.e. brookite, were combined with thermocatalytic redox ones cerium oxide, focusing on effects addition small amounts Co-Cu oxides for solar CO2 conversion. By considering characterization data, a surface segregation hosted metal TiO2-CeO2 composite was evidenced, and their presence increased amount oxygen vacancies improved charge ca...

Journal: :journal of heat and mass transfer research(jhmtr) 2014
somayeh nobahar mehdi parvini hossein eisazadeh

in this article, preparation of polypyrrole and its nanocomposites as adsorbents werediscussed and the capability of separation of copper ions from aqueous solution were studied.polypyrrole was prepared by chemical oxidative polymerization method of pyrrole usingfecl3 as an oxidant. the removal of cu (ii) was investigated using ppy, ppy/tio2 andppy/tio2/dhsna nanocomposites. the products were i...

Journal: :Materials research foundations 2021

Degradation performance of Cu-TiO2 photocatalytic materials against a widely used antibiotic drug levofloxacin (LFX) was investigated under visible LED light source 40 W. (0.25-1.0 wt%) nanomaterials are prepared through reverse micelle mediated modified sol-gel method. Characterization synthesized samples performed by XRD, UV-Vis, and DLS techniques. The doping 0.5 wt% copper in TiO2 shown low...

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