نتایج جستجو برای: bi2o3 nanstructures
تعداد نتایج: 674 فیلتر نتایج به سال:
Porous Bi2O3–Bi2S3 composite sheets were constructed through a combinational methodology of chemical bath deposition and hydrothermal reaction. The Na2S precursor concentration in the solution was varied to understand correlation between vulcanization degree structure evolution porous sheets. control etching rate Bi2O3 sheet template regrowth Bi2S3 crystallites via suitable sulfide during react...
This work aimed to investigate the impact of Lead-fluoride based glasses via theoretical and simulation techniques on mechanical radiation shielding parameters. Accordingly, Bi2O3 was blended with TeO2–B2O3–PbF2 by using melt-quenching method. Using Fluka Monte Carlo code, properties have measured. Moreover, Comparatively higher density PbF80 = 6.163 g/cm3 80 mol % Bi2O3, greater µ, µm Zeff low...
چکیده: هدایتگرهای سریع یونی در تحقیقات اخیر به خاطر خواص فیزیکی جالب وشگفت انگیزشان بسیار مورد توجه قرار گرفته اند. هدایت یونی بالا در یک جامد کریستالی توسط بی نظم کننده هایی مانند عناصر لانتانیدی به دست می آید.اکسید بیسموت یکی از کریستال های چند فازی می باشد که ازجمله فازهای شناخته شده آن ?، ?، ? و ? می باشند. این ترکیب به عنوان یک ترکیب پر کاربرد در زمینه های گوناگون کاتالیستی، سنسورهای گازی...
In this work, we report synthesis and characterization of Bi2O3 nanoparticles loaded on mesoporous MCM-41 nanoparticles by a simple solid-state dispersion (SSD) method. Monoclinic bismuth oxide nanoparticles were prepared by polyacrylamide gel method and used as loading materials on the prepared mesoporous MCM-41 as a supporting material. Fourier transform infrared spectroscopy (FT-IR), X-ray p...
Bismuth-based photocatalysts are a class of excellent visible-light photocatalysts; however, their redox activity is relatively poor and the efficiency photogenerated carrier separation low, limiting development application in field photocatalysis. To address these issues, series polyoxometalate PW12O403–-doped Bi2O3–x/Bi Schottky PW12@Bi2O3–x/Bi-n (PBOB-n, where n amount NaBH4, i.e., 6, 12, 18...
Upgrading of atmospheric CO2 into high-value-added acetate using renewable electricity via electrocatalysis solely remains a great challenge. Here, inspired by microbial synthesis biocatalysts, we present coupled system to produce from bridging inorganic with through formate intermediates. A 3D Bi2O3@CF integrated electrode an ice-sugar gourd shape was fabricated straightforward hydrothermal st...
Introduction: Recently, the use of nanoparticles has increased for many purpose in medicine. One of these is using the nano particles in shields structure to protect sensitive organs such as breast which placed inside the field of chest CT scan and receives high dose. The aim of this study was the use of nano Bi2O3 to making shield for protection breast in chest CT examination ...
in this work, we report synthesis and characterization of bi2o3 nanoparticles loaded on mesoporous mcm-41 nanoparticles by a simple solid-state dispersion (ssd) method. monoclinic bismuth oxide nanoparticles were prepared by polyacrylamide gel method and used as loading materials on the prepared mesoporous mcm-41 as a supporting material. fourier transform infrared spectroscopy (ft-ir), x-ray p...
Bismuth oxide kinetically stabilized by doping with a metastable structure of disordered fluorite ?-Bi2O3 has unique conductivity. Oxygen selective membranes at intermediate temperatures ~550?C, on the base cermet ?-Bi2O3/Ag, have highest potential for air separation and can be used to produce oxygen distributed multigeneration burning fossil carbon fuels. When searching optimal composition ?-B...
ترکیب Bi2O3 - 25%mol Y2O3 75%mol درسیستم Bi2O3 - Y2O3 به عنوان ترکیب پایه با بالاترین هدایت یونی قابلیت پایدارسازی فاز مکعبی �?-Bi2O3 را دارد. ترکیب مذکور به روش مخلوط حالت جامد تهیه شده و پس از گرانول سازی نمونه?ها به شکل�قرص در آورده شدند. نمونه?های تهیه شده در دمای C˚950 و به مدت زمان3600 ساعت تف جوشی شدند. آنالیز پراش پرتو ایکس نمونه ها بیانگر تثبیت فاز مکعبی در دمای پایین بود. هم چنین با ا...
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