Efficiently photocatalytic conversion of CO2 on ultrathin metal phthalocyanine/g-C3N4 heterojunctions by promoting charge transfer and CO2 activation

Recent Progress of Perovskite Oxide in Emerging Photocatalysis Landscape: Water Splitting, CO₂ Reduction, and N₂ Fixation

“…In recent years, the inexorable rise of carbon dioxide level in the atmosphere has already exceeded 400 × 10 −6 and the concentration of CO2 has increased at a rate higher than that of 2 × 10 −6 every year, highlighting the need for reducing the present CO2 emissions [168][169][170][171][172][173] . Therefore, the production of valuable chemicals or fuels using the greenhouse gas, CO2 as a carbon source has been considered as a promising solution in dealing with the critical issues of energy shortages, clean energy production, and maintaining the normal carbon cycle to get the global environment back on track 169,[174][175][176][177][178][179][180][181][182] .…”

“…The photocatalytic reduction of CO2 by H2O is one of promising technologies 197 , which can not only reduce the concentration of CO2, but also generate energy. However, it requires that the maximum value of valance band of the working photocatalyst be less than the reduction potential of water, and the minimum value of conduction band must be higher than the reduction potential of CO2 in order to get the expected products 198 and the main products are HCOOH, HCHO, CH3OH and CH4 52,150, [178][179][180][181][182]199,200 . Defect engineering plays a significant role in improving the catalytic efficiency of perovskite oxide, of which the performance can be altered by A/B site doping for modifying the photocatalytic performance of perovskite oxides, enhancing light absorption, charge transformations and subtle variations in metal cation coordination.…”

Erbium Single Atom Composite Photocatalysts for Reduction of CO2 under Visible Light: CO2 Molecular Activation and 4f Levels as an Electron Transport Bridge

“…Besides, the potentials at the band edge positions are difficult to meet the potential requirements of photocatalytic reaction at the same time, and the photogenerated carrier separation is poor. [16][17][18][19] Thus, the key technology bottlenecks of photocatalytic CO 2 reduction are the poor charge separation and low efficiency of photocatalyst during the photocatalytic reaction. [20][21][22][23] Combining two semiconductors with different bandgap energy can realize the complementary advantages of the two materials, which is an effective approach to improving photocatalytic efficiency.…”

Novel axial substituted subphthalocyanine sensitized titanium dioxide H12SubPcB‐OPh2OH/TiO2 photocatalyst: Synthesis, density functional theory calculation, and photocatalytic properties

“…Furthermore, it has been proved that sensitization method can effectively improve the photocatalytic activity of TiO 2 , especially when the sensitizer is macrocyclic conjugated structurally related such as phthalocyanines (Pcs) and porphyrins. [41] At present, a wide variety of Pcs and porphyrins have been used in the field of dye-sensitized photocatalysis, such as photocatalytic degradation of pollutants, [42][43][44][45] photocatalytic water splitting for hydrogen production, [46] and photocatalytic CO 2 reduction, [47] and showed excellent performance. Subphthalocyanines (SubPcs), which is a lower homologue of phthalocyanine species and the one of the most striking characteristics is the cone-shaped structure by comparison with an extensive range of macrocyclic and planar aromatic compounds.…”