This work is aimed at improving the electrosorption capacity of carbon nanotube/reticulated vitreous carbon- (CNT/RVC-) based 3D electrodes and decreasing the duration of electrosorption-desorption cycles by facilitating the ions’ adsorption and desorption on the electrode surface. This was achieved by preparing composites of microwave-irradiated graphene oxide (mwGO) with CNT. All composite materials were coated on RVC by the dip-coating method. The highest loading level was 50 mg. This is because it exhibited the maximum electrosorption capacity when tested in terms of geometric volume. The results showed that the 9-CNT/mwGO/RVC electrode exhibited 100% capacitive deionization (CDI) cyclic stability within its 1^st five cycles. Moreover, 27.78% time was saved for one adsorption-desorption cycle using this electrode compared to the CNT/RVC electrode. In addition, the ion removal capacity of NaCl by the 9-CNT/mwGO/RVC electrode with respect to the mass of the electrode (3.82 mg/g) has increased by 18.27% compared to the CNT/RVC electrode (3.23 mg/g) when measured at the optimum conditions. In a complete desalination process, the water production per day for the 9-CNT/mwGO/RVC electrode was increased by 67.78% compared to the CNT/RVC electrode when measured within the same CDI cell using NaCl solution of concentration less than 1 mg/L. When considered volume of 1 m³, this optimum 9-CNT/mwGO/RVC electrode produces water 29,958 L per day. The highest electrosorption capacity, when measured experimentally at 500 mg/L NaCl feed concentration, was 10.84 mg/g for this optimum electrode, whereas Langmuir isotherm gave the theoretically calculated highest value as 16.59 mg/g. The results for the 9-CNT/mwGO/RVC composite electrode demonstrate that it can be an important electrode material for desalination in CDI technology.

中文翻译：

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通过使用微波辐照氧化石墨烯（mwGO）修改3D SWCNT / RVC电极以有效脱盐来改善电容去离子（CDI）系统的效率

这项工作旨在通过促进离子在电极表面的吸附和解吸，提高碳纳米管/网状玻璃碳（CNT / RVC-）基3D电极的电吸附能力，并缩短电吸附-解吸循环的持续时间。这是通过制备微波辐射的氧化石墨烯（mwGO）与CNT的复合材料来实现的。通过浸涂法将所有复合材料涂在RVC上。最高负载量为50毫克。这是因为当按照几何体积进行测试时，它表现出最大的电吸附容量。结果表明，9-CNT / mwGO / RVC电极具有100％电容去离子（CDI）的环状的第1内稳定性^ST五个周期。此外，与CNT / RVC电极相比，使用该电极可节省一个吸附-解吸循环的时间27.78％。此外，与CNT / RVC电极（3.23 mg / g）相比，9-CNT / mwGO / RVC电极对NaCl的离子去除能力相对于电极质量（3.82 mg / g）增加了18.27％。 ）（在最佳条件下进行测量）。在完整的海水淡化过程中，当在同一CDI单元中使用浓度小于1 mg / ml的NaCl溶液进行测量时，与CNT / RVC电极相比，9-CNT / mwGO / RVC电极的每日水产量增加了67.78％。 L. 当考虑1 m ^3的体积，这种最佳的9-CNT / mwGO / RVC电极每天可产生29,958 L的水。当在500 mg / L NaCl进料浓度下通过实验测量时，该最佳电极的最高电吸附容量为10.84 mg / g，而Langmuir等温线给出的理论计算最大值为16.59 mg / g。9-CNT / mwGO / RVC复合电极的结果表明，它可以作为CDI技术中脱盐的重要电极材料。