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tio2 encapsulated into zeolitic imidazolate framework (tio2@zif-8) as an efficient nanophotocatalyst for degradation of paraquat herbicide
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نویسنده
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dashtestani fariba ,mohagheghi vahid ,ma'mani leila ,maafi kobra
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منبع
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ايمني زيستي - 2020 - دوره : 13 - شماره : 3 - صفحه:71 -82
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چکیده
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In this research, preparation, characterization, and evaluation of tio2 encapsulated into zeolitic imidazolate framework (tio2@zif8) nanophotocatalyst was investigated as an efficient photodegradation of paraquat (pq) herbicide from aqueous samples. this study was performed using a zif8based nanophotocatalyst and a reactor consisting of an ultraviolet (uv) source and a reaction chamber. the effects of various parameters including contaminant concentration, amount of nanophotocatalyst, and ph reaction time were investigated on the removal efficiency of contaminant by the tio2@zif8 nanophotocatalyst. the results showed by increasing the amount of the tio2@zif8 nanophotocatalyst and ph, the removal of paraquat showed an increase. the optimal condition was found as nanophotocatalyst concentration (0.05 g.l1), ph (7) at room temperature for 15 min for removal of 99.8% paraquat. according to the results, tio2@zif8 emerged as an efficient, robust, and recyclable nanophotocatalyst, which is a potential and environmentally friendly process for the removal of toxic chemical herbicide as hazardous organic contaminants from aqueous samples. the facile fabrication approach and the enhanced photocatalytic activity of tio2@zif8 were highlighted and notably showed good reusability in 8 consecutive cycles.
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کلیدواژه
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tio2 ,zeolitic imidazolate framework ,photocatalyst ,paraquat. ,tio2
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آدرس
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agricultural research education and extension organization (areeo), agricultural biotechnology research institute of iran (abrii), department of nanotechnology, iran, agricultural research education and extension organization (areeo), agricultural biotechnology research institute of iran (abrii), department of nanotechnology, iran, agricultural research education and extension organization (areeo), agricultural biotechnology research institute of iran (abrii), department of nanotechnology, iran, islamic azad university, west tehran branch, iran
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TiO2 Encapsulated into Zeolitic Imidazolate Framework (TiO2@ZIF-8) as an Efficient Nanophotocatalyst for Degradation of Paraquat Herbicide
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Authors
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Mohagheghi Vahid ,Ma'mani Leila ,Maafi Kobra
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Abstract
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In this research, preparation, characterization, and evaluation of TiO2 encapsulated into zeolitic imidazolate framework (TiO2@ZIF8) nanophotocatalyst was investigated as an efficient photodegradation of paraquat (PQ) herbicide from aqueous samples. This study was performed using a ZIF8based nanophotocatalyst and a reactor consisting of an ultraviolet (UV) source and a reaction chamber. The effects of various parameters including contaminant concentration, amount of nanophotocatalyst, and pH reaction time were investigated on the removal efficiency of contaminant by the TiO2@ZIF8 nanophotocatalyst. The results showed by increasing the amount of the TiO2@ZIF8 nanophotocatalyst and pH, the removal of paraquat showed an increase. The optimal condition was found as nanophotocatalyst concentration (0.05 g.L1), pH (7) at room temperature for 15 min for removal of 99.8% paraquat. According to the results, TiO2@ZIF8 emerged as an efficient, robust, and recyclable nanophotocatalyst, which is a potential and environmentally friendly process for the removal of toxic chemical herbicide as hazardous organic contaminants from aqueous samples. The facile fabrication approach and the enhanced photocatalytic activity of TiO2@ZIF8 were highlighted and notably showed good reusability in 8 consecutive cycles.
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Keywords
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TiO2 ,Zeolitic Imidazolate Framework ,Photocatalyst ,Paraquat. ,TiO2
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