The effect of nickel in the adsorption of N-acetyl-p-aminophenol (paracetamol) on a metal-organic frameworks (MOFs) type MIL-101(Cr) was studied. The incorporation of Ni to MOFs adsorbent was carried out by impregnation and adjusted to give a 4.00 wt.% Ni. The adsorbents were characterized by specific surface area (SSA), surface acidity techniques, electrophoretic migration (EM), thermogravimetric analysis (TGA), and scanning electron microscope (SEM) and were tested by the adsorption of paracetamol solutions. The results showed that the Ni particles were well dispersed throughout the MIL-101(Cr) crystal increasing the acid strength and the density of acid site values in the MOFs surface. The increase in adsorption capacity of MIL-101(Cr) when Ni was incorporated can be attributed to the availability of metal atoms as adsorption centers that can adsorb the paracetamol by electronic retro-donation through π-type complexing.

中文翻译：

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Ni的掺入对扑热息痛（N-乙酰基-P-氨基苯酚）对MIL-101（Cr）的吸附能力的影响

研究了镍在MIL-101（Cr）型金属有机骨架（MOF）上吸附N-乙酰基-对氨基苯酚（扑热息痛）的作用。通过浸渍将Ni掺入到MOFs吸附剂中，并进行调节以得到4.00重量％的Ni。通过比表面积（SSA），表面酸度技术，电泳迁移（EM），热重分析（TGA）和扫描电子显微镜（SEM）对吸附剂进行表征，并通过对乙酰氨基酚溶液的吸附进行测试。结果表明，Ni颗粒很好地分散在整个MIL-101（Cr）晶体中，从而提高了MOF表面的酸强度和酸位值密度。