Metal center regulation of the porphyrin unit in covalent organic polymers for boosting the photocatalytic CO2 reduction activity

Regulating the porphyrin's metal center of metalloporphyrin(MPor)/Ru(ii)-pincer complex(RuN3) covalent organic polymers (COPs) effectively boosted the CO2 photoreduction by promoting charge separation and sacrificial electron donor oxidation.

Efficient CO2 reduction over a Ru-pincer complex/TiO2 hybrid photocatalyst via direct Z-scheme mechanism

Solar-driven CO2 conversion to hydrocarbon fuels is a feasible way to solve the increasingly serious energy problem and greenhouse effect. Herein, we fabricate a novel hybrid photocatalyst for CO2 reduction...

Brookite TiO2 Nanoparticles Decorated with Ag/MnOx Dual Cocatalysts for Remarkably Boosted Photocatalytic Performance of the CO2 Reduction Reaction

The solar-driven CO₂ reduction reaction (CO₂RR) for producing chemical fuels is considered to be a promising approach to dealing with the growing energy crisis and greenhouse effect. Herein, novel Ag/MnO_x dual-cocatalyst-decorated brookite titania (BT) nanoparticles with remarkably boosted photocatalytic CO₂RR performance are prepared through a facile photodeposition method. The resultant xAg-BT-yMn composite with optimal cocatalyst content delivers amazing CO/CH₄ yields of 31.70/129.98 μmol g^-1 with an overall photoactivity of 1103.28 μmol g^-1 h^-1, 11.98 times higher than that of the BT nanoparticles alone. Further investigations demonstrate that the dual cocatalysts decorating the BT nanoparticles not only effectively retard the photoinduced charge recombination but also significantly vary the surface chemical feature to promote the adsorption/activation of the reactants (CO₂/H₂O). In addition, the Ag nanoparticles can broaden the spectral response region, while the MnO_x cocatalyst can promote the CH₄ product selectivity and the water oxidation reaction. The synergistic effect of Ag/MnO_x dual cocatalysts on the BT nanoparticles renders a remarkably boosted CO₂RR performance, which provides a simple yet general synthesis strategy for brookite titania-based photocatalysts with high-performance solar-driven CO₂ conversion.