Copper oxide modified activated carbon (CuO/AC) composites for the CO 2 capture were synthesized via a facile assembly strategy associated with a direct solid-state heat dispersion process by introducing CuO into AC using Cu(NO 3 ) 2 as the copper source. The synthesized CuO/AC composites with various CuO contents were characterized by powder X-ray diffraction, scanning electron microscopy and nitrogen adsorption-desorption measurement, and the CO 2 adsorption performance was investigated. The characterization results indicate that the Cu(NO 3 ) 2 species was well dispersed into the AC pore channels and then converted to a highly dispersed CuO after the activation process. The adsorption results reveal that the CO 2 adsorption performance can be significantly improved by introducing CuO onto the AC surfaces, and the CuO(0.6)/AC composite with a CuO loading of 0.6 mmol/g AC shows a high CO 2 adsorption capacity and adsorption selectivity and displays an excellent reversibility. Additionally, the calculated adsorption heat values of CO 2 on the CuO(0.6)/AC composite are in the range of 27.3 to 33.9 kJ/mol.

中文翻译：

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用于高效吸附 CO2 的氧化铜改性活性炭复合材料的简易制造

用于 CO 2 捕获的氧化铜改性活性炭 (CuO/AC) 复合材料是通过与直接固态散热工艺相关的简易组装策略合成的，通过使用 Cu(NO 3 ) 2 作为铜源将 CuO 引入到 AC 中。通过粉末X射线衍射、扫描电镜和氮吸附-脱附测量对合成的不同CuO含量的CuO/AC复合材料进行了表征，并研究了CO 2 吸附性能。表征结果表明，Cu(NO 3 ) 2 物质很好地分散到AC孔道中，然后在活化过程后转化为高度分散的CuO。吸附结果表明，在活性炭表面引入CuO可以显着提高CO 2 吸附性能，CuO(0. 6)/AC 复合材料的 CuO 负载量为 0.6 mmol/g AC，显示出高 CO 2 吸附容量和吸附选择性，并显示出优异的可逆性。此外，计算得出的 CO 2 在 CuO(0.6)/AC 复合材料上的吸附热值为 27.3 至 33.9 kJ/mol。