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首页> 外文期刊>ACS Omega >Facile Ball-Milling Synthesis of CuO/Biochar Nanocomposites for Efficient Removal of Reactive Red 120
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Facile Ball-Milling Synthesis of CuO/Biochar Nanocomposites for Efficient Removal of Reactive Red 120

机译：CuO / Biochar纳米复合材料的容易球磨合成，用于有效去除反应性红色120

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With the goal of improving the removal of anionic contaminants, copper oxide (CuO)-modified biochar (BC) nanocomposites were successfully prepared through simply ball milling CuO particles with BC. The physicochemical properties of the fabricated CuO/BC nanocomposites were systematically characterized by a series of techniques; their adsorption performances were assessed, and the main adsorption mechanism was revealed. X-ray powder diffraction, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy analyses of the nanocomposites showed the strong interaction between CuO and BC and confirmed the success of the ball-milling syntheses. Because of strong electrostatic attraction between the embedded CuO nanoparticles and reactive red (RR120), the composited adsorbents exhibited excellent RR120 removal. The 10%-CuO/BC nanocomposite achieved the best RR120 removal efficiency (46%), which is much higher than that of pristine BC (20%). In addition, the adsorption was insensitive to the change of solution initial pH (4–10). The 10%-CuO/BC also showed fast adsorption kinetics (equilibrium time < 3 h) and extremely high adsorption capacity (Langmuir maximum capacity of 1399 mg g~(–1)) to RR120 in aqueous solutions. Findings from this study demonstrate not only the strong feasibility of ball-milling synthesis of BC-based nanocomposites but also the promising potential of the CuO/BC nanocomposites to remove aqueous anionic contaminants.
机译：通过改善去除阴离子污染物的目的，通过简单地用BC铣削CuO颗粒成功制备氧化铜（CuO）制碳的生物炭（BC）纳米复合材料。通过一系列技术系统地表征了制造的CuO / BC纳米复合材料的物理化学性质;评估其吸附性能，并揭示了主要吸附机制。 X射线粉末衍射，傅立叶变换红外光谱和纳米复合材料的X射线光电子能谱分析显示CUO和BC之间的强相互作用，并确认了球磨合成的成功。由于嵌入的CuO纳米颗粒和反应性红色之间的静电吸引力强（RR120）之间的良好静电吸引，所以复合吸附剂表现出优异的RR120去除。 10％-cuo / BC纳米复合材料实现了最佳的RR120去除效率（46％），其远高于原始BC（20％）。此外，吸附对溶液初始pH（4-10）的变化不敏感。 10％-cuo / BC还显示出快速吸附动力学（平衡时间<3小时）和极高的吸附能力（Langmuir最大容量为399mg g〜（-1）中的水溶液中的RR120。本研究的发现不仅表明了基于BC基纳米复合材料的球磨合成的强的可行性，而且表明了CuO / BC纳米复合材料的有希望的潜力除去了阴离子污染物。

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