Graphene-modulated assembly of zinc phthalocyanine on BiVO₄ nanosheets for efficient visible-light catalytic conversion of CO₂

Abstract

Graphene-modulated ZnPc/BiVO4 Z-scheme heterojunctions for efficient visible-light catalytic CO2 conversion are achieved by increasing the optimized amount of highly dispersed ZnPc.

Dissection of Light‐Induced Charge Accumulation at a Highly Active Iron Porphyrin: Insights in the Photocatalytic CO2 Reduction

“…Importantly, control experiments in the absence of one component of the reaction i.e. [Ru(bpy) 3 ] 2 + , UrFe, H 2 O, CO 2 and SED, did not show photocatalytic CO production (Table S2, entries 3,4,6). This experiment rules out any participation of the catalyst as an intrinsic chromophorecatalyst system during photocatalysis.…”

Bismuth-Graphene Nanohybrids: Synthesis, Reaction Mechanisms, and Photocatalytic Applications—A Review

“…Similarly, a bismuth oxide-reduced graphene oxide quantum dots (rGO/BiO QDs) composite was synthesized, which provides excess photoelectrons and protons for CO 2 reduction [238]. In another study, a nanoheterojunction electrocatalyst made of zinc phthalocyanine/graphene/BiVO 4 showed higher performance than the BiVO 4 nanocatalysts due to the modulating presence of graphene [239]. Using defect engineering, oxygen vacancy-rich electrocatalysts were prepared by Yang et al [240].…”

Structure/Property Control in Photocatalytic Organic Semiconductor Nanocrystals

“…Reproduced with permission. [ 102 ] Copyright 2020, Royal Society of Chemistry. j) Schematics of Cu 2+ as a bridge to link g‐C 3 N 4 and TCPP.…”

“…Hydrogen bond interactions were also introduced between p‐type ZnPc and n‐type BiVO 4 to stimulate the Z‐scheme charge transfer. [ 102 ] By use of the acid‐treated graphene as a surface modifier of BiVO 4 , a stronger hydrogen bond interaction formed between the N atoms of ZnPc assemblies and ‐OH group on the surface of BiVO 4 NSs (Figure 14g), as evidenced by the positive shift of the N 1s peak for the junction compared to pure ZnPc. Due to this interaction, a stronger SPV response, FL quenching as well as greatly reduced R CT were observed in the modified ZnPc/BiVO 4 as opposed to the standard one, clearly suggesting a Z‐scheme charge transfer (Figure 14h).…”