Mn₃O₄@CoMn₂O₄–Co_xO_yNanoparticles: Partial Cation Exchange Synthesis and Electrocatalytic Properties toward the Oxygen Reduction and Evolution Reactions

Abstract

Mn3O4@CoMn2O4 nanoparticles (NPs) were produced at low temperature and ambient atmosphere using a one-pot two-step synthesis protocol involving the cation

Pd2Sn [010] nanorods as a highly active and stable ethanol oxidation catalyst

“…character and with unmatched composition, size, shape and phase control. [29][30][31][32][33][34][35][36][37] In the present work, using DFT calculations, we show the (100) and (001) facets of orthorhombic Pd 2 Sn to be more favorable for the EOR than (010). We subsequently produced colloidal Pd 2 Sn NRs grown in the [010] direction and assessed their electrocatalytic performance as an anode EOR electrocatalyst for DEFCs in an alkaline medium, comparing it with that of Pd 2 Sn and Pd spherical NPs.…”

Cation/Anion Exchange Reactions toward the Syntheses of Upgraded Nanostructures: Principles and Applications

“…17 In addition, hybrid nanostructures prepared via partial CER also exhibited efficient electrocatalytic properties, such as a Mn 3 O 4 @CoMn 2 O 4 -Co x O y core-shell for ORR and OER. 170 By combining CER and AER, Lou and colleagues reported the synthesis of onion-like NiCo 2 S 4 , 16 multi-shelled ZnS-CdS cages, 160 CdS hierarchical multi-cavity hollow particles, 161 and Cu-doped CoSe 2 hollow microboxes (Figure 11B). 163 The structural and compositional advantages of NCs enabled by a facile CER/AER strategy exhibited improved conductivity for good rate capability and cycling performances.…”

Role of the Crystal Structure in Cation Exchange Reactions Involving Colloidal Cu2Se Nanocrystals

“… 6 − 9 Also, over the last couple of years, CE reactions have been observed to take place in the solid state when different nanostructures were heated up in the high vacuum environment of a transmission electron microscope (TEM). 10 − 12 The knowledge accumulated so far on CE reactions has enabled, this last year alone, the synthesis of new types of NHs, such as CdS nanowires covered by a monolayer of MoS 2 , 13 Cu 2 S-decorated CdS nanorods (NRs), 14 and new core@shell NC systems such as Mn 3 O 4 @CoMn 2 O 4 –Co x O y , 15 Ag–Zn–In-S@ZnS, 16 and SnTe@CdTe. 17 − 20 Moreover, the number of new NC materials that can be accessed by CE with control over the shape, 21 − 25 crystal structure, 26 and composition 27 − 34 has also increased significantly.…”

“… 17 − 20 Moreover, the number of new NC materials that can be accessed by CE with control over the shape, 21 − 25 crystal structure, 26 and composition 27 − 34 has also increased significantly. In turn, these advanced nanostructures have found application in many different fields such as bioimaging, 16 , 20 , 28 , 30 , 35 chemical sensing, 30 supercapacitors, 21 electro- or photocatalysis, 14 , 15 and spintronic or optoelectronic devices. 13 , 23 , 32 …”