Abstract

A novel Fe anchored aminoclay was prepared and characterized. The prepared novel Fe-AC catalyst was tested toward both the reduction and oxidation reactions. The catalytic reduction was achieved toward the removal of the three pollutants such as fluorescein dye, nitrophenol (NP) and Cr(VI) using Fe-AC system. The catalytic reduction study was quantified by UV-visible spectroscopy and the k_app value was determined to assess the reduction efficiency of the prepared catalyst on the removal of hazardous pollutants. The Fe-AC catalyst yielded higher k_app values for the reduction of individual pollutant than the binary and tri-pollutant systems. 91% of Cr(VI) and NP was found to be reduced in 12 mins in their binary pollutants mixture. The Schiff base formation was also carried out to examine the oxidation activity of Fe-AC catalyst and the same was confirmed through ¹H-NMR spectra.

摘要

制备并表征了一种新型铁锚定氨基粘土。对制备的新型 Fe-AC 催化剂进行了还原和氧化反应测试。使用 Fe-AC 系统实现了对荧光素染料、硝基苯酚 (NP) 和 Cr(VI) 三种污染物的催化还原。通过紫外-可见光谱对催化还原研究进行量化，并确定k _app值以评估制备的催化剂对有害污染物去除的还原效率。Fe-AC 催化剂产生更高的k _app与二元和三元污染物系统相比，单个污染物的减少值。发现 91% 的 Cr(VI) 和 NP 在其二元污染物混合物中在 12 分钟内被还原。还进行了席夫碱的形成以检查 Fe-AC 催化剂的氧化活性，并通过¹ H-NMR 光谱证实了这一点。