Organic half-metal derived erythroid-like BiVO4/hm-C4N3 Z-Scheme photocatalyst: Reduction sites upgrading and rate-determining step modulation for overall CO2 and H2O conversion

Unraveling Electron Structure and Reaction Mechanisms of Functionalized Nickel-Based Complexes for Efficient Hydrogen Evolution

“…Catalysts with precious Pt, Ru, or Ir as the core are still the key component for highly efficient HER. − Although precious metals have excellent catalytic performance, the high cost and the organic reaction environment significantly reduce their potential for widespread use. Therefore, it is necessary to explore complexes with inexpensive nonprecious metals such as molybdenum, cobalt, iron, and nickel as the centers. − Metallic nickel is a promising molecular catalyst due to its low cost, stable structure, and excellent performance. The nickel 2-mecaptoethanol complex was originally found to be an effective catalyst for H 2 generation with high quantum efficiency (24.5%) reported by Rong and co-workers .…”

Review on CeO2-Based Photocatalysts for Photocatalytic Reduction of CO2: Progresses and Perspectives

“…In 1979, Bard first proposed that redox potentials for heterojunction systems could occur at heterojunctions of the Z-scheme . It has also been experimentally demonstrated that two different photocatalysts can form a Z-type heterojunction system. − As shown in Figure e, under light conditions, the electrons in the conduction band of photocatalyst II migrate to the valence band of photocatalyst I, and this process will greatly prolong the time of photogenerated electron–hole pair recombination to obtain enhanced photocatalytic activity for the photocatalytic reduction of CO 2 . , Nanoheterostructures of Cu 2 O/WO 3 /CeO 2 were reported as a ternary oxide Z-scheme by Prajapati et al In the absence of precious metal cocatalysts, its activity for visible-light-driven photocatalytic CO 2 reduction is four times that of the binary oxide component and eight times more active than CeO 2 alone. Furthermore, as shown in Figure a and b, the researchers have also looked at two possible mechanistic scenarios from Type II and Type Z.…”

Construction of Carbon Dot-Modified g-C3N4/BiOIO3 Z-Scheme Heterojunction for Boosting Photocatalytic CO2 Reduction under Full Spectrum Light

“…In recent years, graphite carbon nitride (g-C 3 N 4 ), as a nonmetallic material, has drawn extensive attention because of its narrow band gap, excellent stability, and low toxicity. , Nevertheless, the low solar energy utilization efficiency and fast recombination of photoinduced charges of pure g-C 3 N 4 restricted its practical application in the field of photocatalytic reduction of CO 2 . , Therefore, various approaches have been explored to promote the photocatalytic activity of pure g-C 3 N 4 , including element doping, , metal nanoparticle decoration, , morphology control, , heterostructure construction, , and so forth. Notably, the construction of the Z-scheme heterojunction by coupling g-C 3 N 4 with auxiliary semiconductors would efficiently separate and transfer the photogenerated charges, thus promoting the photocatalytic performance of g-C 3 N 4 .…”