اکسایش فتوکاتالیزی سولفیدها توسط نانوکامپوزیت TiO2@GO-CdSe اصلاح شده با CdS

نوع مقاله : علمی-پژوهشی

نویسندگان

دانشکده شیمی، دانشگاه کردستان، سنندج، ایران

چکیده

در این پژوهش فرایند اکسایش فتوکاتالیزی سولفیدها در شرایط بهینه توسط اکسیژن هوا به­ عنوان عامل اکسنده و نور مرئی در حضور نانو کامپوزیت اصلاح شدهTiO2@GO-CdSe با CdS در مقایسه با TiO2@GO-CdSe به تنهایی مورد بررسی قرار گرفت. نانو کامپوزیت اصلاح شده با تثبیت هم زمان نانوذره­ های کادمیم سلنید، کادمیم سولفید و تیتانیم دی اکسید بر روی صفحه ­های گرافن اکسید به روش هیدروترمال تهیه شد و ماهیت آن با مقایسه با مرجع علمی پیشین تأیید شد. اندازه نانوذره ­ها در بازه­ ی 60 تا 80 نانومتر به دست آمد. بازده اکسایش انتخابی سولفیدها به سولفوکسیدها توسط نانوکامپوزیت اصلاح شده  TiO2@GO-CdSeS به مقدار چشمگیری در حد 65 درصد افزایش یافت. همچنین روند تغییرهای بازده نشانگر بالاتر بودن بازده واکنشاکسایش فتوکاتالیزی سولفیدهای آروماتیک نسبت به مشتق ­های آلیفاتیک و یا اکسیژن­ دار می ­باشد. این نانوکامپوزیت فعالیت فتوکاتالیزی بالا در بازه زمانی کوتاه و با قابلیت استفاده دوباره را نشان داد.

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