In this work, a metal-organic framework (MOF-200) demonstrating microporosity was prepared from organic linker 1,3,5-tris(4-carboxy[1,2-biphenyl]-4-yl)-benzene) (H₃BBC) and salt Zinc Nitrate Hexahydrate (Zn-(NO₃)₂.6H₂O) via direct solution-based and catalyst-free method. The MOF-200 was further post-synthetically modified to MOF-200/GO with graphene oxide (GO). The structural and texture properties of MOF-200 and MOF-200/GO were investigated by FESEM, FTIR, Raman analysis, powder XRD, thermal stability, BET analysis, and selective adsorption behavior of CO₂/CH₄. The N₂ adsorption-desorption isotherms reveal their highly microporous nature. The results showed the loss in surface area from 3624 m²/g (MOF-200) to 3359 m²/g (MOF-200/GO) due to post-synthetic modification with an improvement in CO₂ uptake capacity of 15% due to successful surface functionalities attachment exhibiting remarkable CO₂ philic nature. Both MOF-200 and MOF-200/GO were found crystalline in nature and highly stable under thermal conditions. Furthermore, the isotherms study by using the Langmuir isotherm, Freundlich isotherm, Sips isotherm, and Toth isotherm models was carried out. The isotherms-based results demonstrated favorable adsorption behavior with heterogenous systems and demand pore activation by employing high-pressure gas adsorption.

在这项工作中，由有机连接基1,3,5-三（4-羧基[1,2-联苯] -4-基）-苯）（H ₃）制备了具有微孔性的金属有机骨架（MOF-200）。BBC）和盐硝酸硝酸六水合物（Zn-（NO ₃）₂ .6H ₂ O）通过直接基于溶液的无催化剂方法制备。使用氧化石墨烯（GO）将MOF-200进一步后合成修饰为MOF-200 / GO。通过FESEM，FTIR，拉曼分析，粉末XRD，热稳定性，BET分析以及CO ₂ / CH _4的选择性吸附行为研究了MOF-200和MOF-200 / GO的结构和织构性质。N ₂吸附-解吸等温线显示出其高度微孔的性质。结果表明，由于合成后的改性，表面积损失从3624 m ² / g（MOF-200）降至3359 m ² / g（MOF-200 / GO），而CO ₂吸收能力提高了15％成功展现出出色的CO ₂表面功能天性。发现MOF-200和MOF-200 / GO均为晶体，在热条件下高度稳定。此外，通过使用Langmuir等温线，Freundlich等温线，Sips等温线和Toth等温线模型进行了等温线研究。基于等温线的结果表明，在异质体系中具有良好的吸附性能，并且需要采用高压气体吸附来激活孔隙。