Co3O4中Co2+和Co3+的3d轨道电子数分别为3d7和3d6,根据能量最低原理和洪特规则,处于稳定的价电子构型分别为t2g6eg1和t2g6eg0,完全π对称的d轨道(t2g轨道)会导致Co2+/Co3+与O2–桥之间均存在较强的e--e-排斥作用,而Fe3+...
Fe-doped Co3O4 has a strong future in energy storage, as evidenced by its exceptional electrochemical characteristics.Congcong LuYu YangSongjun LiMaiyong ZhuMaterials Chemistry Frontiers
Herein, duck blood containing heme (a type of ferriporphyrin) is carbonized and activated to obtain Fe, N doped carbon. The activated carbonized blood (a〤B) exhibits an extremely high specific surface area of 2655 m 2 g . Then, Co 3 O 4 nanoparticles are loaded on the efficient ...
The Oxygen Evolution Reaction (OER) is vital for energy conversion and storage. This study presents a multi-heterostructure catalyst, Fe2O3/Co3O4/Co(PO3)2, created by encapsulating Fe ions in COF/MOF pores through grinding and one-step pyrolysis. The cat
通讯作者是天津大学的李振花教授,采用原位掺杂法在合成 ZIF-67 的过程中引入铝源,以获得高性能 Co3O4/Al2O3-x 催化剂。同时考察了不同Al前体(包括 AlCl3⋅6H2O、Al(C3H7O)3 和 Al (NO3)3⋅9H2O)对催化性能的影响。与直接碳化得到的 Co@C 催化剂相比,制备的 Co3O4/Al2O3-x 催化剂具有更好的...
the well-designed NHCNT/Fe3O4electrode delivers an excellent cycling stability with 87% capacity retention at 1 A g−1after 1000 cycles and a remarkable rate performance. And hollowN-doped carbon nanotubes (NHCNT) displays a favorable reversible capacity of 350 mAh g−1in the 500th cycle...
Tin-doped compounds of spinel-related M3O4 (M = Fe, Mn, Co) have been studied by 119Sn and 57Fe Mssbauer spectroscopy in the temperature range of 20€"600 K. The 119Sn Mssbauer spectra recorded down to 20 K from the non-iron-containing compounds of Co3O4 and Mn3O4 contained ...
Colloids Surf A Physicochem Eng Asp 522:416–424 Su P, Zhou M, Song G, Du X, Lu X (2020) Efficient H2O2 genera- tion and spontaneous OH conversion for in-situ phenol degrada- tion on nitrogen-doped graphene: pyrolysis temperature regu- lation and catalyst regeneration mechanism. J Hazard...
In this work, we synthesized Fe-doped meso-Co3O4via a nanocasting method. The merit of our method lies in high spin state Fe3+ (t2g3eg2) being controllably introduced into an octahedral site to regulate the valence states and configure the eg electron of Co3+. The introduced Fe3+ ...
This study investigates the synthesis of CuO/Ni/Fe3O4 nanocomposite (NC) using gallic acid, as well as its catalytic performance in CO2 methanation and pho