Bifunctional noble-metal-free cocatalyst coating enabling better coupling of photocatalytic CO2 reduction and H2O oxidation on direct Z-scheme heterojunction

RETRACTED: Engineering MPC-Assisted Heterojunctional Photo-Oxidation Tailored by Interfacial Design of a P-Modulated C3N4 Heterojunction for Improved Aerobic Alcohol Oxidation

“…The elucidation of this dynamic electron transfer, highlighted by shifts in binding energies upon light irradiation, provides insights into the intricate photocatalytic mechanisms at work within these sophisticated material systems. Such insights not only unravel the complexities of photocatalytic pathways but also underscore the synergistic interplay between material composition and photocatalytic efficiency, thereby enriching our understanding of the fundamental processes governing these advanced photocatalytic materials …”

“…Such insights not only unravel the complexities of photocatalytic pathways but also underscore the synergistic interplay between material composition and photocatalytic efficiency, thereby enriching our understanding of the fundamental processes governing these advanced photocatalytic materials. 44 The ability to separate and transport photoexcited charges, which then take part in catalytic events, is a critical component of the photocatalytic activity efficiency. These dynamics were investigated in this work using steady-state surface photovoltage spectroscopy (SPS), as illustrated in Figures 5a and S12a,S13,S14a, Supporting Information.…”

Upgrading Single S-Scheme Heterojunction to Multi-S-Scheme Ones for Better Synergy of Photocatalytic CO2 Reduction and H2O Oxidation: The Third Component Location Matters

“…The difference is that the O 2 yields of the latter two samples are even lower than that of In O, the GC−MS analysis reveals a prominent peak at m/z = 36 corresponding to 18 O 2 , validating that the produced O 2 stems from H 2 O oxidation (Figure 3e). 25 Based on the evolution rates of the products as well as the number of photocarriers required for their generation, the hole/electron utilization ratio can be calculated, which is close to 1 for In 2 O 3 /CdS@ZIS, inferring that the redox reactions proceed stoichiometrically. However, in the cases of (In 2 O 3 /CdS)@ZIS and CdS/In 2 O 3 @ZIS, the ratio is far below the theoretical value, indicating a delayed H 2 O oxidation process.…”

“…This finding implies that the ZnIn 2 S 4 coating on CdS impedes the desorption of H*, leading to sluggish kinetics in H 2 evolution. 25 Figure 5g presents the stepwise Gibbs free energy diagrams for CO 2 reduction to CO alongside relevant optimized configurations. In both instances, the formation of *COOH intermediates from *CO 2 and the desorption of *CO to produce CO are endothermic processes.…”