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Optimizing the Properties of Hybrids Based on Graphene Oxide for Carbon Dioxide Capture
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-01-13 , DOI: 10.1021/acs.iecr.1c02922 Yating Ye 1 , L Vega Martín 1 , M J Sánchez Montero 1, 2, 3 , D López-Díaz 1, 4 , M M Velázquez 1, 2, 3 , M D Merchán 1, 2, 3
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-01-13 , DOI: 10.1021/acs.iecr.1c02922 Yating Ye 1 , L Vega Martín 1 , M J Sánchez Montero 1, 2, 3 , D López-Díaz 1, 4 , M M Velázquez 1, 2, 3 , M D Merchán 1, 2, 3
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The reduction of CO2 emissions and its elimination from the atmosphere has become one of the major problems worldwide, since CO2 is the main cause of the greenhouse effect and climate change. In recent years, a great number of carbonaceous materials that can be used as CO2 adsorbents have been synthesized. The strategy is usually to synthesize the materials and determine their adsorption capacity without studying previously the factors that influence this capacity. In this work, different properties of the adsorbents are analyzed to study their influence on the CO2 adsorption capacity. For this purpose, 10 adsorbents have been synthesized using different strategies and characterized with X-ray photoelectron spectroscopy, X-ray diffraction, and micro-Raman spectroscopy. The percentage of sp2 carbons, the position of the D + D′ peak of the second-order Raman spectrum, the micropore volume, and the grain size of the C sp2 domains have been related to the amount of CO2 adsorbed by the adsorbents. The results confirm a linear relationship between the volume of the micropores and the CO2 uptake and it proves that CO2 retention is favored in those materials that, in addition to having a high volume of micropores, also have low grain size of C.
中文翻译：
优化基于氧化石墨烯的二氧化碳捕获杂化物的性能
由于CO 2是温室效应和气候变化的主要原因，因此减少CO 2排放并将其从大气中消除已成为世界范围内的主要问题之一。近年来，人们合成了大量可用作CO 2吸附剂的碳质材料。该策略通常是合成材料并确定其吸附容量，而不预先研究影响该容量的因素。在这项工作中，分析了吸附剂的不同性质，以研究它们对CO 2吸附容量的影响。为此，我们使用不同的策略合成了 10 种吸附剂，并通过 X 射线光电子能谱、X 射线衍射和显微拉曼光谱进行了表征。 sp 2碳的百分比、二级拉曼光谱中D + D′峰的位置、微孔体积以及C sp 2域的晶粒尺寸与被吸附的CO 2量相关。吸附剂。结果证实了微孔体积与CO 2吸收之间的线性关系，并且证明了除了具有高微孔体积之外还具有低C晶粒尺寸的材料有利于CO 2保留。
更新日期：2022-01-26
中文翻译：
优化基于氧化石墨烯的二氧化碳捕获杂化物的性能
由于CO 2是温室效应和气候变化的主要原因，因此减少CO 2排放并将其从大气中消除已成为世界范围内的主要问题之一。近年来，人们合成了大量可用作CO 2吸附剂的碳质材料。该策略通常是合成材料并确定其吸附容量，而不预先研究影响该容量的因素。在这项工作中，分析了吸附剂的不同性质，以研究它们对CO 2吸附容量的影响。为此，我们使用不同的策略合成了 10 种吸附剂，并通过 X 射线光电子能谱、X 射线衍射和显微拉曼光谱进行了表征。 sp 2碳的百分比、二级拉曼光谱中D + D′峰的位置、微孔体积以及C sp 2域的晶粒尺寸与被吸附的CO 2量相关。吸附剂。结果证实了微孔体积与CO 2吸收之间的线性关系，并且证明了除了具有高微孔体积之外还具有低C晶粒尺寸的材料有利于CO 2保留。
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