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Iranian Journal of Materials Science and Engineering، جلد ۹، شماره ۱، صفحات ۶۲-۶۸
عنوان فارسی
چکیده فارسی مقاله
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عنوان انگلیسی SUSPENSION STABILITY OF TITANIA NANOPARTICLES STUDIED BY UV-VIS SPECTROSCOPY METHOD
چکیده انگلیسی مقاله Ultraviolet–Visible (UV–Vis) spectroscopy was used, in the current investigation, to explore the dispersion and stability of titania nanoparticles in an aqueous media with different types of dispersants. Hydrochloric and nitric acids as well as ammonia were used to determine the stability of the suspension in the acidic region (pH=2.5) and basic area (pH=9.5), respectively. In addition, for measuring sustainability of suspension and creating steric, and electrosteric repulsive forces, ethylene glycol and ethylene glycol plus ammonia were employed, respectively. UV–V isspectrometry was applied to realize the effect of nano titania concentrations and different types of dispersants of samples containing different amounts of nano titania and different types of dispersants on stability of TiO2-containing suspensions. In addition, the stability of dispersion could be evaluated in colloidal mixtures containing ethylene glycol plus ammonia. It was demonstrated that the mixtures containing ethylene glycol plus ammonia were stable over a period of 4 days. To support the UV–Vis results, other techniques such as atomic force microscopy (AFM) and scanning electron microscopy (SEM) were employed to study the degree of agglomeration of titania nanoparticles in terms ofmorphology and size.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله y صفایی نایینی | y safaei naeini
1 department of material, majlesi branch, islamic azad university, majlesi, iran.

سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)

m امین زارع | m aminzare
2 school of metallurgy and materials engineering, iran university of science and technology, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (Iran university of science and technology)

f گلستانی فرد | f golestani fard
2 school of metallurgy and materials engineering, iran university of science and technology, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (Iran university of science and technology)

f خراسانی زاده | f khorasanizadeh
2 school of metallurgy and materials engineering, iran university of science and technology, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (Iran university of science and technology)

اسماعیل صلاحی | e salahi
3 ceramic department, materials and energy research center, karaj, iran.
نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-127-3&slc_lang=en&sid=en
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه سرامیک
نوع مقاله منتشر شده Research paper
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