Hierarchically porous Co3O4 architectures with honeycomb-like structures for efficient oxygen generation from electrochemical water splitting

A facile synthesis of reduced Co3O4 nanoparticles with enhanced Electrocatalytic activity for oxygen evolution

“…3c displays that the charge transfer resistance (R ct ) of ReCo 3 O 4 (40 U) is much smaller than that of OeCo 3 O 4 (125 U). The decreasing of R ct value proves the faster transfer electron and the better electrocatalytic properties of ReCo 3 O 4 for OER [18,20]. Fig.…”

Synthesis of p-Co3O4/n-TiO2 Nanoparticles for Overall Water Splitting under Visible Light Irradiation

“…To improve the efficiency of the hydrogen production, researchers work hard on modifying the nanomaterials [3,4,5,6]. Moreover, doping rare metals on semiconductor nanomaterials, changing the morphology of the nanomaterials and synthesis of complex nanomaterials are hot means that can be employed to improve the photocatalytic activity [7,8,9,10,11,12,13,14,15,16,17,18]. Maeda studied the photocatalytic activity of Rutile TiO 2 doped by Ru, Rh, Ir, Pt or Au, with the results showing that the most water splitting amount of H 2 and O 2 for 4 h is 56.6 μmol and 26.5 μmol, respectively, when Pt doping amount is at 1 wt.…”

“…Meanwhile, some nanomaterials (La 2 Ti 2 O 7 , PbTiO 3 , SrTiO 3 , etc.) also play important roles in water splitting [9,10,11,12,13,14,15,16,17]. The water splitting amount of H 2 is 166.67 μmol/h·g when Au and reducing graphene oxide doped La 2 Ti 2 O 7 act as photocatalyst [11].…”

3,5-Diamino-1,2,4-triazole as a Nitrogen precursor to synthesize highly efficient Co-N/C non-precious metal bifunctional catalyst for oxygen reduction reaction and oxygen evolution reaction

“…5c, the Nyquist plots indicate that the charge transfer resistance of the Co-N/C-600 catalysts decreases in the following order: Co-N 10% / C-600 > Co-N 20% /C-600 > Co-N 40% /C-600 > Co-N 30% /C-600. The smaller charge transfer resistance can lead to more efficient charge transport in the OER process [41]. Thus, the OER activity of the Co-N/C-600 catalysts increases in the following sequence: Co-N 10% /C-600 < Co-N 20% /C-600 < Co-N 40% / C-600 < Co-N 30% /C-600.…”