Alamgholiloo Hassan, Rostamnia Sadegh, Zhang Kaiqiang, Lee Tae Hyung, Lee Yoon-Sik, Varma Rajender S, Jang Ho Won, Shokouhimehr Mohammadreza
Organic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh 55181-83111, Iran.
Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea.
ACS Omega. 2020 Mar 9;5(10):5182-5191. doi: 10.1021/acsomega.9b04209. eCollection 2020 Mar 17.
Fabrication of a nanocomposite catalyst via a novel and efficient strategy remains a challenge; FeO nanoparticles anchored on graphene oxide (GO) sheet-supported metal-organic frameworks (MOFs). In this study, the physicochemical properties of the ensuing FeO/Cu-BDC/GO are investigated using Fourier transform infrared spectrum, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, energy-dispersive X-ray detector, and atomic absorption spectroscopy. The salient features of the nanocomposite such as Cu-MOF, synergistic effect with GO sheets, and magnetic separation characteristics make it an excellent ternary heterostructure for aerobic oxidation of alcohols. The proposed nanocatalyst and co-catalyst 2,2,6,6-tetramethylpiperidine--oxyl substantially enhance the catalytic performance for the aerobic oxidation under very mild and sustainable reaction conditions. The heterogeneity of FeO/Cu-BDC/GO composite catalyst is affirmed with the added advantage that the initial activity is well maintained even after seven cycles.
通过新颖且高效的策略制备纳米复合催化剂仍然是一项挑战；氧化亚铁纳米颗粒锚定在氧化石墨烯（GO）片负载的金属有机框架（MOF）上。在本研究中，使用傅里叶变换红外光谱、扫描电子显微镜、透射电子显微镜、X射线光电子能谱、能量色散X射线探测器和原子吸收光谱对所得的FeO/Cu-BDC/GO的物理化学性质进行了研究。该纳米复合材料的显著特征，如铜基MOF、与氧化石墨烯片的协同效应以及磁分离特性，使其成为用于醇类有氧氧化的优异三元异质结构。所提出的纳米催化剂和助催化剂2,2,6,6-四甲基哌啶-1-氧基在非常温和且可持续的反应条件下显著提高了有氧氧化的催化性能。FeO/Cu-BDC/GO复合催化剂的非均相性得到了证实，其额外的优点是即使在七个循环后仍能很好地保持初始活性。
