najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2021-12-6-773-782najo-576Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХPhotocatalytic degradation of Rose Bengal dye over mechanochemically synthesized zinc oxide under visible light irradiationФотокаталитическая деградация красителя бенгальской розы на механохимически синтезированном оксиде цинка под действием видимого светаKaldanteY. D.KaldanteY. D.

Sangvi, Pune, Maharashtra – 411027;

Otur, Tal. Junnar, Dist. Pune, Maharashtra – 412409.

ydkaldante@gmail.comShirsatR. N.ShirsatR. N.

Otur, Tal. Junnar, Dist. Pune, Maharashtra – 412409.

ChaskarM. G.ChaskarM. G.

Sangvi, Pune, Maharashtra – 411027;

Akurdi, Maharashtra – 411044.

manohar_c@hotmail.comDepartment of Chemistry, PDEA’s Baburaoji Gholap College; Department of Chemistry, PDEA’s Annasaheb Waghire CollegeIndiaDepartment of Chemistry, PDEA’s Annasaheb Waghire CollegeIndiaDepartment of Chemistry, PDEA’s Baburaoji Gholap College; Department of Chemistry, PDEA’s Prof. Ramkrishna More CollegeIndia202107082025126773782Copyright © Kaldante Y.D., Shirsat R.N., Chaskar M.G., 20252025Kaldante Y.D., Shirsat R.N., Chaskar M.G.Kaldante Y.D., Shirsat R.N., Chaskar M.G.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/576

Present work summarized efficient synthesis of ZnO by mechanochemical method via zinc oxalate dihydrate precursor for studies of the photocatalytic degradation of Rose Bengal dye. The process of conversion of zinc oxalate dihydrate to ZnO was studied by TGA-DTG analysis and FT-IR Spectroscopy, XRD data obtained clearly revealed the hexagonal wurtzite crystallite structures of ZnO. FE-SEM images confirmed nanocrystalline morphology of ZnO with an approximately uniform particle size distribution. The purity of ZnO was confirmed by EDX study. The optical band gap of ZnO was determined from UV-Visible spectroscopy. The photocatalytic activity of ZnO was investigated with degradation of Rose Bengal dye. The colorimetric absorbance measurement was used to estimate degradation efficiency. The catalytic activity was studied with reference to the condition of dye concentration, photocatalyst loading capacity, pH of dye solution, irradiation time, etc. Photocatalytic degradation of Rose Bengal dye over mechanochemically synthesized ZnO under visible light irradiation was successfully studied.

В работе подведены итоги синтеза ZnO механохимическим методом с использованием прекурсора дигидрата оксалата цинка для изучения фотокаталитической деградации красителя Rose Bengal. Процесс превращения дигидрата оксалата цинка в ZnO был изучен с помощью анализа ТГА-ДТГ и ИК-Фурье-спектроскопии, полученные данные РФА четко выявили гексагональные вюрцитные кристаллитные структуры ZnO. Изображения FE-SEM подтвердили нанокристаллическую морфологию ZnO с примерно однородным распределением частиц по размерам. Чистота ZnO была подтверждена исследованием EDX. Оптическая ширина запрещенной зоны ZnO была определена с помощью УФ-видимой спектроскопии. Фотокаталитическую активность ZnO исследовали при разложении красителя бенгальской розы. Колориметрическое измерение поглощения использовали для оценки эффективности разложения. Каталитическую активность изучали в зависимости от концентрации красителя, емкости загрузки фотокатализатора, рН раствора красителя, времени облучения и т. д. Успешно изучена фотокаталитическая деструкция красителя бенгальского розового на механохимически синтезированном ZnO под действием видимого света.

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The authors declare that there are no conflicts of interest present.