Magnesium substituted cobalt spinel nanostructures for electrocatalytic water oxidation

Influence of Co2+, Cu2+, Ni2+, Zn2+, and Ga3+ on the iron-based trimetallic layered double hydroxides for water oxidation

“…[1][2][3] Molecular hydrogen is a great alternative to accomplish the energetic demand because of its high caloric value, which can be produced by electro-and photochemical water splitting. 1,[3][4][5] Water oxidation reaction (WOR) is crucial for the development of chemical energy generation through excitonic chemical conversion devices like articial photosynthesis systems (PS). 2,6 The challenge to achieve a scalable WOR is to overcome the high applied potential due to the nature of this multi-electron reaction: 2H 2 O / O 2 + 4H + + 4e À which requires more than 1.23 V vs. SHE (standard hydrogen electrode).…”

“…4,[11][12][13][14] First-row transition metals like Fe, Co, Ni, Mn, Zn, and Cu have also been evaluated as cheaper catalysts and co-catalysts (more abundant on earth's surface) than precious metals for either photosystem of type 1 or 2. 4,5,7,[15][16][17] NiFe and CoFe LDHs have been engineered for enhancing the electrocatalytic activity and they are some of the most active catalysts for WOR based on transition metals. [18][19][20] Nevertheless, few mechanisms or strategies have been proposed to modulate their electronic structure.…”

“…4,11–14 First-row transition metals like Fe, Co, Ni, Mn, Zn, and Cu have also been evaluated as cheaper catalysts and co-catalysts (more abundant on earth's surface) than precious metals for either photosystem of type 1 or 2. 4,5,7,15–17…”

A strategy for modulating the catalytic active center of AP thermal decomposition and its application: La-doped MgCo2O4

“…4(d)). 45 Notably, the peak blue shi of Mg 1s by 0.23 eV aer the successful doping of La may be caused by the lattice distortion of the Mg occupying part of the tetrahedral sites in MgCo 2 O 4 by La. In contrast, the Co 2p proles of all samples showed no signicant shi (Co 2p 3/2 at 779.85 eV, Co 2p 1/2 at 795.28 eV, Fig.…”

Magnesium: properties and rich chemistry for new material synthesis and energy applications

“…13g-j. Other cases of Mg-substitutions, with TM catalysts such as Mg-Co 3 (PO 4 ) 2 , 115 MgCo 2 O 4 , 116 and NiMg-LDHs 117 have been studied and their enhanced OER activities have been reported in the referenced literature accordingly. (110).…”