محمد ثابت
گروه شیمی، دانشکده علوم پایه، دانشگاه ولی‌عصر (عج) رفسنجان، رفسنجان، ایران
[ 1 ] - سنتز سبز نانو زیست حسگرهای نقاط کوانتومی کربن آلائیده شده با نیتروژن به کمک شیر جهت تخریب رنگ اسید بلو 113، شناسایی +Fe3 و باکتری اشرشیا کلی
در این پژوهش نقاط کوانتومی کربن آلائیده شده با نیتروژن با موفقیت به روش هیدروترمال و به کمک شیر خوراکی سنتز شدند و توسط آنالیز پراش اشعه ایکس، آنالیز پراکندگی اشعه ایکس و طیف‌سنجی تبدیل فوریه فروسرخ مشخصه‌یابی گردیدند. اندازه ذرات محصول به کمک آنالیز میکروسکوپی الکترونی روبشی و میکروسکوپی الکترونی عبوری کمتر از nm 10 تخمین زده شد. خواص نوری محصول توسط طیف‌سنجی فرابنفش- مرئی مورد بررسی قرار گرفت...
[ 2 ] - Using the [Co(oct)2] as a New Precursor for Simple Synthesis of CoS2 Nanoparticles and Kinetics Studies on Photocatalytic Activities Under UV Irradiation
Cobalt sulfide (CoS2) nanostructures were synthesized via a simple thermal decomposition method using [Co(oct)2] as a new precursor. Using the organometallic compound as precursor could synthesize materials in nano-scale because of having the massive structure that acted as capping agent. The products were characterized by various analyses such as X-ray diffraction pattern (XRD), scanning elect...
[ 3 ] - Fabrication of Inorganic Sensitized Solar Cells by Drop Casting Deposition of PbSe and PbTe on the TiO2 Surface
In this work, PbSe and PbTe sensitized TiO2 solar cells were fabricated. PbSe and PbTe nanostructure was deposited on the TiO2 surface via a drop cast method. The fabricated surfaces were examined by atomic force microscopy (AFM). Also the optical properties of the layers were studied by diffuse reflectance spectroscopy (DRS) spectra. The morphology of the surfaces was obtained by scanning elec...
[ 4 ] - Preparation and Characterization of ZnO Thin Layers with Various Percentages of Gallium Impurities
In this study, thin films of pure ZnO and doped ZnO with different percentages of gallium (0.5, 1, 2 and 4vt. %) on the glass substrates were deposited by using sol-gel method via spin coating technique at 2500 rpm, and all layers were annealed at 200°C for 1h and then Were examined their electrical, optical and structural properties. Concentration of all solution was 0.1M. The results show th...
[ 5 ] - Photodegradation of Acid Black 1 and Removing Heavy Metals from the Water by an Inorganic Nanocomposite Synthesized via Simple Co-Precipitation Method
In this experimental work, PbS/ZnS/ZnO nanocomposite was synthesized via a simple co-precipitation method. The effect of Zn2+/Pb2+ mole ratio was investigated on the product size and morphology. The products were characterized via scanning electron microscopy to obtain product size and morphology. The optical properties of the nanocomposites were studied by ultra violet-visible spectroscopy. Ph...
[ 6 ] - Al Doped ZnO Thin Films; Preparation and Characterization
ZnO is a promising material suitable for variety of novel electronic applications including sensors, transistors, and solar cells. Intrinsic ZnO film has inferiority in terms of electronic properties, which has prompted researches and investigations on doped ZnO films in order to improve its electronic properties. In this work, aluminum (Al) doped ZnO (AZO) with various concentrations and undop...
[ 7 ] - Detection of Cu2+, Degradation of Acid Brown and Removing Cd2+ from the Water by High Photoluminescence Carbon Dots Synthesized from Milk
In this experimental work, nitrogen-doped carbon quantum dots were successfully synthesized with hydrothermal of the milk. The product was composed of a powder and a stable colloid. The structure of the product was examined by XRD, EDS and FT-IR analysis. Also the particle size of the product was investigated by SEM and TEM images and the results showed the product is mainly composed of the par...
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