3DOM-LaSrCoFeO_6−δas a highly active catalyst for the thermal and photothermal reduction of CO₂with H₂O to CH₄

Abstract

LSCF and 3DOM-LSCF catalysts can significantly improve the catalytic performance and 100% selectivity for the reduction of CO2 with H2O vapor to CH4 under thermal and photo-thermal reaction conditions.

New Iron‐Cobalt Oxide Catalysts Promoting BiVO4 Films for Photoelectrochemical Water Splitting

“…Furthermore, the relative atomic ratio of Co 3+ /Co 2+ is calculated to be 1.14. Similarly, the Fe 2p 3/2 peak is composed of Fe 3+ (≈712.4 eV) and Fe 2+ (≈710.4 eV), with the relative atomic ratio (Fe 3+ /Fe 2+ ) of 0.63 (Figure c). Based on the peak areas, the relative atomic ratio of Co/Fe can be calculated to be 0.91.…”

Photothermal catalytic activity of combustion synthesized LaCoxFe1−xO3 (0 ≤ x ≤ 1) perovskite for CO2 reduction with H2O to CH4 and CH3OH

“…These observations agree with the literature. 20,42,43 The oxidation states for both Fe and Co at the B-site were 2 + and 3 + . The cobalt region shows the typical Co 2p pattern with Co 2p 3/2 and Co 2p 1/2 as shown in Fig.…”

“…This approach improved the conversion rate for the reduction of CO 2 to CO, C and O 2 and H 2 O to H 2 and O 2 , compared with conversion rates for photo or thermal catalysis alone. 19,20 Perovskites, which have the general formula ABO 3 , are materials of potential owing to their stability, magnetism, crystal structure, electrical conductivity and piezoelectric properties. These advantages give rise to applications in magnetoresistance devices, [21][22][23] as solid electrolytes, 24 as transducers [25][26][27][28] and in catalysis.…”

3DOM-NiFe2O4 as an effective catalyst for turning CO2 and H2O into fuel (CH4)

“…PMMA spheres were synthesized by literature techniques [16,28]. Potassium persulfate (6.0 mmol) and water (720 mL) were stirred at 300 rpm, heated at 90°C, retained for 30 min, and degassed with flowing nitrogen in a separable three-neck 250 mL round-bottom flask.…”

“…Since Halmann [8] and Inoue [9] reported their pioneer work on the semiconductor photocatalysts for reduction of CO 2 , many photocatalysts, such as TiO 2 [10][11][12], g-C 3 N 4 [13], Bi 2 WO 6 [14] SnNb 2 O 4 [15] LaSrCoFeO 6−δ [16], ZnO@Cu-Zn-Al [17], have been developed for turning CO 2 into valuable hydrocarbon fuels, mostly in the form of CH 4 . A photocatalyst is usually a semiconductor material which absorbs light, separates the photogenerated charges, transports them to the surface, and provides active sites for the catalytic reaction.…”