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        1 - Biosynthesis of Ag Nanoparticles at Ziziphus Jujuba Kernel Substrate using Tilia platyphyllos Extract: Catalytic Activity for Reduction of Organic Dyes
        Bahar Khodadadi Mohammad Sabeti Omulbanin Norozi
        For the first time the extract of the plant of Tilia platyphyllos was used to green synthesis of Ag nanoparticles (NPs) supported on Ziziphus jujuba kernel as an environmentally benign support. Ag NPs/ Ziziphus jujuba kernelas an effective catalyst was prepared through أکثر
        For the first time the extract of the plant of Tilia platyphyllos was used to green synthesis of Ag nanoparticles (NPs) supported on Ziziphus jujuba kernel as an environmentally benign support. Ag NPs/ Ziziphus jujuba kernelas an effective catalyst was prepared through reduction of Ag+ions using Tilia platyphyllos extractas the reducing and capping agent and Ag NPs immobilization on Ziziphus jujuba kernel surface in the absence of any stabilizer or surfactant. According to FT-IR analysis, the hydroxyl groups of phenolics in Tilia platyphyllos extract as bioreductant agents are directly responsible for the reduction of Ag+ions and formation of Ag NPs. The as-prepared catalyst was characterized by Fourier transform infrared (FT-IR) and UV-Vis spectroscopy, field emission scanning electron microscopy (FESEM) equipped with an energy dispersive X-ray spectroscopy (EDS), Elemental mapping, X-ray diffraction analysis (XRD) and transmittance electron microscopy (TEM). The synthesized catalyst was used in the reduction of Congo Red (CR), and Methyl Orange (MO) at room temperature.The Ag NPs/Ziziphus jujuba kernel showed excellent catalytic activity in the reduction of these organic dyes. In addition, it was found that Ag NPs/Ziziphus jujuba kernelcan be recovered and reused several times without significant loss of catalytic activity. تفاصيل المقالة
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        2 - Tilia Platyphyllos Extract Assisted Green Synthesis of CuO/TiO2 Nanocomposite: Application as a Reusable Catalyst for the Reduction of Organic Dyes in Water
        Bahar Khodadadi Ali Yeganeh Faal Ali Shahvarughi
        In this paper, CuO nanoparticles are synthesized using Tilia platyphyllos extract as reducing and stabilizing agents and TiO2are prepared via facile sol-gel method as an ideal support. FT-IR spectroscopy, UV-Vis spectroscopy, X-ray Diffraction (XRD), Scanning Electron M أکثر
        In this paper, CuO nanoparticles are synthesized using Tilia platyphyllos extract as reducing and stabilizing agents and TiO2are prepared via facile sol-gel method as an ideal support. FT-IR spectroscopy, UV-Vis spectroscopy, X-ray Diffraction (XRD), Scanning Electron Microscopy (FESEM), Energy Dispersive X-ray Spectroscopy (EDS), and Transmission Electron Microscopy (TEM) were used to characterize TiO2, CuONPs, and CuO/ TiO2 nanocomposite. The catalytic activity of the CuO/ TiO2 nanocomposite was investigated for the reduction of Methyl Orange (MO), and Methylene Blue (MB) at room temperature. CuO/ TiO2 nanocomposite can was found to be a highly active catalyst. In addition, it was found that CuO/ TiO2 nanocomposite can berecovered and reused several times without significant loss for its catalytic activity. تفاصيل المقالة
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        3 - Hazelnut shell as a valuable bio-waste support for green synthesis of Ag NPs using Origanum vulgare leaf extract: Catalytic activity for reduction of methyl orange and Congo red
        Bahar Khodadadi
        In this work the Origanum vulgare leaf extract was used to green synthesis of Ag nanoparticles (NPs) supported on Hazelnut shell as an environmentally benign support. The Ag NPs/Hazelnut shell as an effective catalyst was prepared through reduction of Ag+ ions using Ori أکثر
        In this work the Origanum vulgare leaf extract was used to green synthesis of Ag nanoparticles (NPs) supported on Hazelnut shell as an environmentally benign support. The Ag NPs/Hazelnut shell as an effective catalyst was prepared through reduction of Ag+ ions using Origanum vulgare leaf extract as the reducing and capping agent and Ag NPs immobilization on Hazelnut shell surface in the absence of any stabilizer or surfactant. According to FT-IR analysis, the hydroxyl groups of phenolics in Origanum vulgare leaf extract as bio-reductant agents are directly responsible for the reduction of Ag+ ions and formation of Ag NPs. The as-prepared catalyst was characterized by Fourier transform infrared (FT-IR) and UV-Vis spectroscopy, field emission scanning electron microscopy (FESEM) equipped with an energy dispersive X-ray spectroscopy (EDS), X-ray diffraction analysis (XRD) and transmittance electron microscopy (TEM). The synthesized catalyst was used in the reduction of Methyl Orange (MO), and Congo Red (CR) at room temperature. The Ag/Hazelnut shell showed excellent catalytic activity in the reduction of these organic dyes. In addition, it was found that Ag/Hazelnut shell can be recovered and reused several times without significant loss of catalytic activity. تفاصيل المقالة
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        4 - سنتز سبز نانوذرات نقره با استفاده از عصاره گیاه گل آرونه و پوست هسته هلو به‌عنوان یک بستر با ارزش طبیعی: بررسی فعالیت کاتالیستی برای کاهش متیلن بلو و ردآمین B
        بهار خدادادی
        در این پژوهش، عصاره گیاه گل آرونه برای سنتز سبز نانوذرات نقره (AgNPs) بر بستر پوست هسته هلو به‌عنوان یک بستر مفید و سازگاربامحیط‌زیست استفاده شده است. نانوذرات نقره جایگزین شده بر پوست هسته هلو، (AgNPs/P.K.shell)، به‌عنوان یک کاتالیست مؤثر با کاهش یون‌های +Ag به کمک عصا أکثر
        در این پژوهش، عصاره گیاه گل آرونه برای سنتز سبز نانوذرات نقره (AgNPs) بر بستر پوست هسته هلو به‌عنوان یک بستر مفید و سازگاربامحیط‌زیست استفاده شده است. نانوذرات نقره جایگزین شده بر پوست هسته هلو، (AgNPs/P.K.shell)، به‌عنوان یک کاتالیست مؤثر با کاهش یون‌های +Ag به کمک عصاره گیاه گل آرونه و جایگزینی آن‌ها بر بستر پوست هسته هلو سنتز شد. بر اساس نتایج FT-IR وجود گروه‌های هیدروکسیل ترکیبات فنلی در عصاره گیاه گل آرونه، کاهش یون‌های +Ag را توجیه می‌کند. همچنین، کاتالیست سنتز شده با روش‌های متفاوت از جمله طیف‌سنجی مرئی-فرابنفش (UV-Vis)، طیف‌سنجی فروسرخ تبدیل فوریه (FT-IR)، میکروسکوپ الکترونی روبشی گسیل میدانی (FE-SEM)، طیف‌سنجی تفکیک انرژی (EDS)، پراش پرتو ایکس (XRD) و میکروسکوپ الکترونی عبوری (TEM) بررسی شد. افزون بر آن، کاتالیست سنتز شده برای کاهش متیلن بلو (MB) و ردآمینBا(RhB) به‌کار گرفته شد. نتایج نشان داد که کاتالیست AgNPs/P.K.shell سنتز شده فعالیت کاتالیستی بسیار خوبی در تخریب رنگ‌های آلی استفاده‌شده دارد. نتایج نشان داد که کاتالیست سنتز شده قابلیت بازیابی و استفاده دوباره را برای چندین مرتبه بدون کاهش چشمگیر در فعالیت فوتوکاتالیستی دارد. تفاصيل المقالة