HKUST-1, a Cu-based metalorganic framework (MOF), was synthesized solvothermally, functionalized with polyethyleneimine (PEI), and hybridized with graphene oxide (GO) and functionalized GO for H2S removal. MOF synthesis approach, molecular weight of amines, and the content of GO in the hybrid adsorbents were systematically varied. The adsorbent materials were characterized by XRD, FTIR, SEM, elemental analysis, liquid N2 adsorption-desorption, water vapor and oxygen sorption, and subsequently tested for H2S adsorption in a breakthrough column. The MOF in the composite adsorbents consisting of in-situ grown HKUST-1 on GO that was pre-functionalized with low molecular weight PEI exhibited the highest H2S adsorption uptake at ambient conditions (0.9 mmol S g-1 MOF) in comparison to 0.5 mmol S g-1 MOF for the parent HKUST-1, thus showing an 80 % increase in uptake, while this material also exhibited significantly enhanced sorption kinetics. H2S adsorption at higher temperature (150 °C) was also performed, and at this temperature a HKUST/GO hybrid adsorbent resulted in the highest MOF capacity, i.e. 2.1 mmol S g-1 MOF, which is 27 % higher than that of the parent MOF at the same conditions. Formation of hybrid adsorbents with GO coupled to tunable functionalization of both GO support and the MOF crystallites can contribute in optimizing H2S capture performance of MOFs.

中文翻译：

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功能性对HKUST-1和HKUST-1 /氧化石墨烯杂化吸附剂的硫化氢去除作用。

溶剂热合成HKUST-1，一种基于铜的金属有机骨架（MOF），用聚乙烯亚胺（PEI）进行功能化，然后与氧化石墨烯（GO）和功能化的GO杂交以去除H2S。系统地改变了MOF合成方法，胺的分子量和杂化吸附剂中GO的含量。通过XRD，FTIR，SEM，元素分析，液态N2吸附-脱附，水蒸气和氧气吸附对吸附剂材料进行表征，然后在穿透柱中测试H2S吸附。复合吸附剂中的MOF由GO上原位生长的HKUST-1组成，并用低分子量PEI预功能化，在环境条件下（0.9 mmol S g-1 MOF）表现出最高的H2S吸附吸收，而0.5 mmol母公司HKUST-1的S g-1 MOF，因此，该物质的吸收率提高了80％，而该物质的吸附动力学也显着增强。还进行了在较高温度（150°C）下的H2S吸附，在此温度下，HKUST / GO混合吸附剂的MOF容量最高，即2.1 mmol S g-1 MOF，比母体高27％。 MOF在相同条件下。GO与GO载体和MOF晶体的可调功能化偶联形成混合吸附剂可有助于优化MOF的H2S捕获性能。在相同条件下比母MOF高27％。GO与GO载体和MOF晶体的可调功能化偶联形成混合吸附剂可有助于优化MOF的H2S捕获性能。在相同条件下比母MOF高27％。GO与GO载体和MOF晶体的可调功能化偶联形成混合吸附剂可有助于优化MOF的H2S捕获性能。