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مقاله پژوهشی: بررسی تأثیر دمای کلسینه شدن و زمان واکنش در خواص نانوذرات سولفید کادمیوم تهیهشده بهروش سلـژل | ||
فیزیک کاربردی ایران | ||
مقاله 3، دوره 9، شماره 4 - شماره پیاپی 19، دی 1398، صفحه 5-15 اصل مقاله (3.64 M) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22051/jap.2020.25260.1122 | ||
نویسندگان | ||
زهره ارضی* 1؛ علیرضا رازقی زاده2؛ مرتضی زرگر شوشتری3 | ||
1دانشجوی کارشناسی ارشد فیزیک، گروه فیزیک، دانشگاه پیام نور، صندوق پستی 3697 – 19395، تهران، ایران | ||
2استادیار، گروه فیزیک، دانشگاه پیام نور، صندوق پستی 3697 – 19395، تهران، ایران | ||
3استاد، گروه فیزیک، دانشگاه شهید چمران اهواز، اهواز، ایران | ||
چکیده | ||
در این پژوهش نانوذرات سولفید کادمیوم (CdS) به روش شیمیایی سلـژل تهیه شده است. پس از دستیابی بهروش سنتز مناسب و بهینهسازی آن، به منظور بررسی زمان واکنش بر خواص این نانوذرات، سه نمونۀ مجزا با سه زمان واکنش متفاوت 60 و 100 و 140 دقیقه ساخته شد و تحت بررسی آزمون XRD قرار گرفت. با توجه به نتایج، نمونه دارای زمان واکنش ۱۴۰ دقیقه بهترین نمونه قلمداد شد. سپس نمونههایی با زمان واکنش ۱۴۰ دقیقه با شرایط یکسان در دماهای کلسینۀ مختلف 500، 600، 700 و 800 درجۀ سلسیوس تهیه شد. پس از تهیۀ نمونهها، اندازۀ ذرات و ریخت آنها با یکدیگر مقایسه شد. پودرهای حاصل به وسیلۀ روشهای XRD و SEM و EDS مشخصهیابی شدند. ریختشناسی پودر و بررسی عنصری بهوسیلۀ میکروسکوپ الکترونی روبشی و ساختار بلوری بهوسیلۀ پراش اشعۀ ایکس بررسی شد. تحلیل پراش اشعۀ ایکس نشان داد که خلوص نانوذرات سولفید کادمیوم و بلورینگی آن و اندازۀ بلورکها با افزایش دمای کلسینه شدن افزایش یافته و قلههای الگوی پراش قویتر شده است، که پیشبینی میشد. همچنین، ساختار نانوذرات، هگزاگونال تشخیص داده شد. تصاویر میکروسکوپ الکترونی روبشی شکل کروی نانوذرات را نشان داد و میانگین اندازۀ نانو ذرات با افزایش دما روند افزایشی داشت و در بیشترین حالت ۶۷ نانومتر بود. نتایج EDS نیز درصد اتمی و درصد وزنی صحیحی را نشان داد. | ||
کلیدواژهها | ||
نانوذرات؛ CdS؛ سولفید کادمیوم؛ سلـژل؛ دمای کلسینه | ||
عنوان مقاله [English] | ||
Effect of Calcination Temperature and Reaction Time on the Properties of CdS Nanoparticles Prepared by Sol-Gel Method | ||
نویسندگان [English] | ||
zohreh Arzi1؛ Alireza Razeghizadeh2؛ Morteza Zargar shoushtari3 | ||
1M. Sc. Student of Physics, Department of Physics, Payame Noor University, P.O. Box 19395-3697, Tehran, Iran. | ||
2Assistant Professor, Department of Physics, Payame Noor University, P.O. Box 19395-3697, Tehran, Iran | ||
3Professor, Department of Physics, Shahid Chamran University of Ahvaz, Ahvaz, Iran. | ||
چکیده [English] | ||
In this research, cadmium sulphide (CdS) nanoparticles were prepared by sol-gel chemical method. After reaching the appropriate synthesis method, the reaction time of these nanoparticles were studied. Three samples were synthesized with different reaction times of 60, 100 and 140 minutes, and analyzed with X-ray diffraction (XRD). According to the results, the sample with the reaction time of 140 minutes was recognized as the best sample. These samples (with a reaction time of 140 min) are calcinated at temperatures 500, 600, 700 and 800˚C and their properties are compared. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDS) were used for characterization of the samples. SEM and XRD were used to investigate the morphology and crystal structures. X-ray diffraction results showed that the purity of cadmium sulfide nanoparticles and their crystallinity and the size of crystallites were increased with increasing calcination temperature and stronger scattering pattern peaks, which was predictable. The structure of nanoparticles was also hexagonal. The SEM images depicted the spherical shape of nanoparticles. It also measured the average size of nanoparticles about 67nm, which was increased with increasing temperature. The EDS results also showed the atomic percentage and the weight percentage correctly. | ||
کلیدواژهها [English] | ||
Nanoparticles, CdS, Cadmium Sulphide, Sol-Gel, Calcination | ||
مراجع | ||
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