کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5746516 1618796 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Short CommunicationQuantitative methylene blue decolourisation assays as rapid screening tools for assessing the efficiency of catalytic reactions
ترجمه فارسی عنوان
ارتباط کوتاه ارتباطات رنگ آمیزی متیلن آبی معیوب به عنوان ابزار غربالگری سریع برای ارزیابی کارایی واکنش های کاتالیزوری
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


- MB decolourisation assay can screen possible catalysts for oxidative processes.
- MB reacts broadly to oxidative processes, beyond hydroxyl radical production.
- Catalysts performed similarly for both MB decolourisation and bisphenol A removal.

Identifying the most efficient oxidation process to achieve maximum removal of a target pollutant compound forms the subject of much research. There exists a need to develop rapid screening tools to support research in this area. In this work we report on the development of a quantitative assay as a means for identifying catalysts capable of decolourising methylene blue through the generation of oxidising species from hydrogen peroxide. Here, a previously described methylene blue test strip method was repurposed as a quantitative, aqueous-based spectrophotometric assay. From amongst a selection of metal salts and metallophthalocyanine complexes, monitoring of the decolourisation of the cationic dye methylene blue (via Fenton-like and non-Fenton oxidation reactions) by the assay identified the following to be suitable oxidation catalysts: CuSO4 (a Fenton-like catalyst), iron(II)phthalocyanine (a non-Fenton oxidation catalyst), as well as manganese(II) phthalocyanine. The applicability of the method was examined for the removal of bisphenol A (BPA), as measured by HPLC, during parallel oxidation experiments. The order of catalytic activity was identified as FePc > MnPc > CuSO4 for both BPA and MB. The quantitative MB decolourisation assay may offer a rapid method for screening a wide range of potential catalysts for oxidation processes.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 175, May 2017, Pages 247-252
نویسندگان
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