A novel MOF-templated nitrogen and sulphur co-doped porous material has been first synthesized. The representative NS(3 : 1)–C-MOF-5 shows high ORR activity, even comparable to commercial Pt–C.
We synthesized a novel mesoporous Mn 2 O 3 nanostructure as an electrocatalyst support, then Pd-Mn 2 O 3 with different Pd loading amounts were obtained by a facile solvothermal method. The Pd-Mn 2 O 3 demonstrated a good competitive ORR activity and a high selectivity in alkaline medium, which can be comparable to commercial Pt/C catalysts.
A new family of heterometal-organic frameworks has been prepared by two synthesis strategies, in which IFMC-26 and IFMC-27 are constructed by self-assembly and IFMC-28 is obtained by stepwise synthesis based on the metalloligand (IFMC=Institute of Functional Material Chemistry). IFMC-26 is a (3,6)-connected net and IFMC-27 is a (4,8)-connected 3D framework. The metalloligands {Ni(H4 L)}(NO3 )2 are connected by binuclear lanthanide clusters giving rise to a 2D sheet structure in IFMC-28. Notably, IFMC-26-Eux Tby and IFMC-28-Eux Tby have been obtained by changing the molar ratios of raw materials. Owing to the porosity of IFMC-26, Tb(3+) @IFMC-26-Eu and Eu(3+) @IFMC-26-Tb are obtained by postencapsulating Tb(III) and Eu(III) ions into the pores, respectively. Tunable luminescence in metal-organic frameworks is achieved by the two kinds of doping methods. In particular, the quantum yields of heterometal-organic frameworks are apparently enhanced by postencapsulation of Ln(III) ions.
The prepared Pd/polyoxometalate/reduced graphene oxide (Pd/POM/rGO) nanocomposite exhibits enhanced catalytic activity and excellent methanol-tolerance due to the synergistic effect of Pd, POM, and rGO.
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