Sonochemical Removal of Highly Toxic Aqueous Cd2+ and Cr6+ Ions Using Dandelion-like Co3O4 Nanoflowers

Elif Aybike Berberoğlu, M. M. Koç, N. Kurnaz Yetim, Cemile Özcan
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引用次数: 1

Abstract

In this work, cobalt(II/III) oxide (Co3O4) nano/microflowers were practically synthesized in laboratory conditions. Adsorbence properties of the nanoflowers were investigated for the removal of cadmium and chromium heavy metal ions. To assess the chemical and morphological characteristics of Co3O4 nanoflowers, Fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD), field emission electron microscopy (FESEM), Energy dispersive spectroscopy (EDS), and was used. To determine the adsorbence mechanism in detail, eluent concentration, eluent type, solution pH, adsorbent amount, solution volume, and adsorption duration were studied. In these assessments, flame atomic absorption spectroscopy (FAAS) was used. For Cr6+, adsorption optimum parameters were determined as 3M HNO3, pH 6.5, 150mg, 30mL, 60min. For Cd2+, optimum parameters were determined as 3M HNO3, pH 6.0, 100mg, 10mL, 30min. Co3O4, nanoflowers are eco-friendly adsorbent materials for the adsorption of Cd6+ and Cd2+ heavy metal ions since the production method is affordable and practical.
用类似蒲公英的Co3O4纳米花声化学去除水中高毒性Cd2+和Cr6+离子
本研究在实验室条件下实际合成了钴(II/III)氧化物(Co3O4)纳米微花。研究了纳米花对镉、铬等重金属离子的吸附性能。采用傅里叶变换红外光谱(FTIR)、x射线衍射(XRD)、场发射电子显微镜(FESEM)、能谱(EDS)等方法对Co3O4纳米花的化学和形态特征进行了评价。为了详细确定吸附机理,研究了淋洗液浓度、淋洗液类型、溶液pH、吸附剂用量、溶液体积和吸附时间。在这些评估中,使用火焰原子吸收光谱(FAAS)。对Cr6+的最佳吸附参数为3M HNO3, pH 6.5, 150mg, 30mL, 60min。对于Cd2+,最佳工艺条件为3M HNO3, pH 6.0, 100mg, 10mL, 30min。Co3O4纳米花是吸附Cd6+和Cd2+重金属离子的环保吸附材料,其制备方法经济实用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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