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Taghdiri, Mehdi, Hassani-Hemmatabadi, Ehsan, Mostofi, Ehsan, Banifatemeh, Fatemeh. (1403). Application of Enhanced Photocatalytic Activity of Phosphomolybdic Acid upon Hybridization with Hexamine-Cobalt in Fabrication of Visible Light-Driven Titanium Dioxide Nanoparticles. فصلنامه علمی زیست فناوری گیاهان زراعی, 11(2), 114-122. doi: 10.30473/ijac.2025.73480.1315
Mehdi Taghdiri; Ehsan Hassani-Hemmatabadi; Ehsan Mostofi; Fatemeh Banifatemeh. "Application of Enhanced Photocatalytic Activity of Phosphomolybdic Acid upon Hybridization with Hexamine-Cobalt in Fabrication of Visible Light-Driven Titanium Dioxide Nanoparticles". فصلنامه علمی زیست فناوری گیاهان زراعی, 11, 2, 1403, 114-122. doi: 10.30473/ijac.2025.73480.1315
Taghdiri, Mehdi, Hassani-Hemmatabadi, Ehsan, Mostofi, Ehsan, Banifatemeh, Fatemeh. (1403). 'Application of Enhanced Photocatalytic Activity of Phosphomolybdic Acid upon Hybridization with Hexamine-Cobalt in Fabrication of Visible Light-Driven Titanium Dioxide Nanoparticles', فصلنامه علمی زیست فناوری گیاهان زراعی, 11(2), pp. 114-122. doi: 10.30473/ijac.2025.73480.1315
Taghdiri, Mehdi, Hassani-Hemmatabadi, Ehsan, Mostofi, Ehsan, Banifatemeh, Fatemeh. Application of Enhanced Photocatalytic Activity of Phosphomolybdic Acid upon Hybridization with Hexamine-Cobalt in Fabrication of Visible Light-Driven Titanium Dioxide Nanoparticles. فصلنامه علمی زیست فناوری گیاهان زراعی, 1403; 11(2): 114-122. doi: 10.30473/ijac.2025.73480.1315

Application of Enhanced Photocatalytic Activity of Phosphomolybdic Acid upon Hybridization with Hexamine-Cobalt in Fabrication of Visible Light-Driven Titanium Dioxide Nanoparticles

Iranian Journal of Analytical Chemistry
دوره 11، شماره 2 - شماره پیاپی 22، آذر 2024، صفحه 114-122    اصل مقاله (1.12 M)
نوع مقاله: Full research article
شناسه دیجیتال (DOI): 10.30473/ijac.2025.73480.1315
نویسندگان
Mehdi Taghdiri* 1؛ Ehsan Hassani-Hemmatabadi2؛ Ehsan Mostofi2؛ Fatemeh Banifatemeh2
11. Department of Chemistry, Payame Noor University, 19395-3697, Tehran, Iran 2. Research Center of Environmental Chemistry, Payame Noor University, Tehran, Iran
2Department of Chemistry, Payame Noor University, 19395-3697, Tehran, Iran
چکیده
Phosphomolybdate-hexamine-cobalt (PMA-HMT-Co), a new hybrid prepared by coprecipitation method, was used for coating of titanium dioxide nanoparticles in order to improve photocatalytic activity to visible light. PMA-HMT-Co and TiO2-PMA-HMT-Co were characterized by Fourier transform infrared spectroscopy, powder X-ray diffraction and scanning electron microscopy. The diffuse reflectance spectroscopy was used to evaluate the band gap variation. The band gap of PMA-HMT-Co decreased and hence, its photocatalytic activity was enhanced under sunlight irradiation. With the incorporation of PMA-HMT-Co, the band gap of titanium dioxide was transferred from UV to visible region successfully. Rhodamine B (RhB) decolorization tests indicated higher photocatalytic activity of TiO2-PMA-HMT-Co under sunlight irradiation. Photodegradation takes place through the excitation of modified titanium dioxide and the creation of holes (h+) and oxidation of dye.
کلیدواژه‌ها
Photocatalyst؛ Titanium Dioxide؛ Polyoxometalate؛ Dyes؛ Organic-Inorganic Hybrid؛ Solar Light
عنوان مقاله [English]
استفاده از افزایش فعالیت فوتوکاتالیستی فسفومولیبدیک اسید پس از هیبریداسیون با هگزامین-کبالت به منظور ساخت نانوذرات تیتانیوم دی اکسید فعال در نور مرئی
نویسندگان [English]
مهدی تقدیری1؛ احسان حسنی همت آبادی2؛ احسان مستوفی2؛ فاطمه بنی فاطمه2
11. گروه شیمی، دانشگاه پیام نور، صندوق پستی3697-19395، تهران، ایران 2. مرکز پژوهشی شیمی محیط‌زیست، دانشگاه پیام نور، تهران، ایران
2گروه شیمی، دانشگاه پیام نور، صندوق پستی3697-19395، تهران، ایران
چکیده [English]
فسفومولیبدات-هگزامین-کبالت (PMA-HMT-Co)، یک هیبرید جدید تهیه شده به روش هم رسوبی، برای پوشش نانوذرات تیتانیوم دی اکسید به منظور بهبود فعالیت فوتوکاتالیستی در برابر نور مرئی استفاده شد. PMA-HMT-Co و TiO2-PMA-HMT-Co با طیف‌سنجی زیرقرمز تبدیل فوریه، پراش پودر اشعه ایکس و میکروسکوپ الکترونی روبشی شناسایی شدند. طیف‌سنجی بازتاب پخشی برای محاسبه شکاف نواری استفاده شد. شکاف نواری PMA-HMT-Co کاهش یافت و از این رو، فعالیت فوتوکاتالیستی آن تحت تابش نور خورشید افزایش یافت. در اثر پوشش تیتانیوم دی اکسید با فسفومولیبدات-هگزامین-کبالت، شکاف نواری تیتانیوم دی اکسید با موفقیت از ناحیه فرابنفش به مرئی منتقل شد. آزمایش‌های رنگ‌زدایی رودامین بی (RhB) فعالیت فتوکاتالیستی بالاتر TiO2-PMA-HMT-Co را تحت تابش نور خورشید نشان داد.تخریب نوری از طریق تحریک  تیتانیوم دی اکسید اصلاح شده و ایجاد حفره (+h) و اکسیداسیون رنگ صورت می گیرد.
کلیدواژه‌ها [English]
فتوکاتالیست, تیتانیوم دی اکسید, پلی اکسومتالات, رنگ‌ها, هیبرید آلی-معدنی, نور خورشید
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آمار
تعداد مشاهده مقاله: 42
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