عاملدار کردن و سنتز پایدار نانوکامپوزیت PET-AuNPs به روش سونوشیمی و مطالعات کمی و کیفی الکتروشیمیایی با الکترود اصلاح شده AuNPs-PET/CNT/Au
الموضوعات :
جواد مرادپور
1
,
حسین پیمان
2
,
حمیده روشنفکر
3
1 - دانشجو گروه شیمی دانشگاه آزاد اسلامی واحد ایلام
2 - گروه شیمی، دانشکده علوم پایه، دانشگاه آزاد اسلامی واحد ایلام. عضو هیات علمی
3 - عضو هیات علمی، گروه شیمی، دانشکده علوم پایه، دانشگاه آزاد اسلامی واحد ایلام
الکلمات المفتاحية: پلی اتیلن ترفتالات, جاذب, اولتراسونیک, نانوذرات طلا, عاملدار کردن,
ملخص المقالة :
پلی اتیلن ترفتالات در صنایع مختلف کاربرد دارد، اما به دلیل فقدان گروه‌های عاملی در سطح با محدودیت کاربرد مواجه می باشد و نیازمند اصلاح سطح جهت بهبود کاربرد می‌باشد. در این پژوهش ابتدا سطح الیاف PET با گروه‌های کربوکسیلیک اسید عاملدار گردید. سپس، در محیط قلیایی نانوذرات طلا به روش سونوشیمی بصورت پایدار بر سطح آن سنتز شد و اثر پارامتر های موثر بر اندازه و تراکم نانو ذرات بررسی و بهینه گردید (دما، توان دستگاه التراسونیک و pH). از توانایی نانوکامپوزیت PET-AuNPs برای حذف رنگ های صنعتی از محیط زیست استفاده و در حذف و اندازه گیری رنگ متیل اورانژ از محیط‌های آبی استفاده شد و اثر غلظت اولیه رنگ، زمان و pH بررسی و بهینه گردید. در اندازه‌گیری کمی الکتروشیمیایی رنگ، الکترود اصلاح شده AuNPs-PET/CNT/Au در دامنه 20 تا 60 میکرومولار دارای پاسخ خطی بود. حد تشخیص این الکترود 55 میکرومولار و اثر سرعت روبش پتانسیل بر جریان پیک و اثر pH محلول بررسی گردید. مطالعات تعادلات جذب نشان دادند که جذب از ایزوترم تمکین پیروی می‌نماید.
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