ساخت و مشخصه‌یابی خواص بلوری نانوساختارهای هیدروکسید آلومینیوم و بررسی کاربرد آنها

آدمی, منوچهر; موسیوند, صبا

doi:10.22055/jrmbs.2020.15570

ساخت و مشخصه‌یابی خواص بلوری نانوساختارهای هیدروکسید آلومینیوم و بررسی کاربرد آنها

نوع مقاله : مقاله پژوهشی کامل

نویسندگان

گروه فیزیک، دانشکده علوم پایه، دانشگاه لرستان، خرم آباد، ایران

10.22055/jrmbs.2020.15570

چکیده

نانوذرات هیدروکسید آلومینیوم در یک سلول حاوی محلول الکترولیت تترامتیل‌آمونیوم‌کلراید و دو ورقه آلومینیومی به‌عنوان آند و کاتد با موفقیت ساخته شدند. به‌منظور بررسی اثر ولتاژ بر خواص بلوری ذرات، پنج نمونه با اعمال ولتاژهای 7 ولت، 9 ولت، 12 ولت، 15 ولت و 18 ولت رشد داده شدند. ذرات با استفاده از دستگاه‌های پراش پرتوایکس (XRD)و میکروسکوپ الکترونی روبشی (SEM)مشخصه‌یابی شدند. الگوهایXRD تشکیل هیدروکسید آلومینیوم با ساختار مکعبی ساده را به خوبی نشان داد و هیچ پیکی که نشان‌دهنده ناخالصی باشد مشاهده نشد. طبق این الگوها نمونه ساخته شده تحت ولتاژ 7 ولت آمورف بود و با افزایش ولتاژ ساختار بلوری نمونه بهبود یافت. تصاویر SEMذرات شبه‌کروی با اندازه نانومتری را نشان داد. با توجه به این تصاویر کوچکترین ذرات با اندازه میانگین 9 نانومتر تحت ولتاژ 18ولت ساخته شدند. در بخش کاربردی این پژوهش حذف آلاینده‌های کادمیوم و نیکل از آب آلوده آزمایشگاهی تحت ولتاژهای 7 ولت تا 18 ولت و آب سه رودخانه خرم‌رود، کشکان و سیمره با اعمال ولتاژ بهینه 15 ولت بررسی شد. نتایج جذب اتمی (AAS) قابلیت این روش در جداسازی آلاینده‌های آب را نشان داد.

کلیدواژه‌ها

موضوعات

ماده چگال

عنوان مقاله [English]

Synthesis and study of the crystalline properties of aluminum hydroxide nanoparticles and investigation of their application

نویسندگان [English]

Manoochehr Adami
Saba Mosivand

Department of Physics, Faculty of Basic Sciences, Lorestan University, Karram-Abad, Iran

چکیده [English]

Aluminum hydroxide nanoparticles successfully synthesized in an electrochemical cell containing tetramethylammonium chloride as electrolyte and two Al sheets as anode and cathode. In order to study the effect of voltage on crystalline properties of particles, five samples synthesized by applying 7 V, 9 V, 12 V, 15 V, and 18 V. The particles characterized using X-Ray diffraction (XRD) and scanning electron microscope (SEM). XRD patterns clearly approved the formation of aluminum hydroxide with cubic structure and no sign of impurities observed. Based on these results, the sample prepared under 7 V had amorphous structure and the crystal structures of samples improved by increasing the applied voltage. SEM images showed the quasi spherical particles with nanometer size. Based on these images the smallest particles with the mean size of about 9 nm synthesized under 18 V. In the practical part of this study, the removal of nickel and cadmium from water has been investigated by applying 7-18 V on laboratory polluted water and 15 V on Khorram-rood, Kashkan, and Seimareh rivers. The atomic absorption analysis (AAS) results showed the possibility of this method on separation of pollutants from water.

کلیدواژه‌ها [English]

Aluminum hydroxide nanoparticles
Electrocrystallization
Crystalline properties
Polluted water
Cadmium
Nickel

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