Artificial light-harvesting 2D photosynthetic systems with iron phthalocyanine/graphitic carbon nitride composites for highly efficient CO₂ reduction

Abstract

Photocatalytic conversion of CO2 into value-added chemicals is considered to be a promising strategy to capture greenhouse gas as well as produce energy. The exploration of efficient and stable photocatalysts...

Facile Construction of Iron Phthalocyanine/Carbon Nitride Heterojunction toward Visible Light-Assisted Peroxydisulfate Activation for Efficient Tetracycline Degradation

“…From the SEM image of FePc/CN-6 (Figure 3c), no FePc particles can be observed on the surface of CN due to the small amount of FePc in the composite. 30 The SEM images of FePc/CN composites with different ratios of FePc to CN are shown in Figure S4b−e. It can be seen that, when the mass percentage of FePc to CN increases to 20%, the nanosheet morphology almost disappears and the composite consists of irregular nanoparticles (Figure S4e).…”

“…It can be seen that CN exhibits a nanosheet morphology (Figure a), while FePc has an irregular bulk morphology consisting of small nanoparticles (Figure b), which transforms to a rod-like morphology after calcination at 400 °C (Figure S4a). From the SEM image of FePc/CN-6 (Figure c), no FePc particles can be observed on the surface of CN due to the small amount of FePc in the composite . The SEM images of FePc/CN composites with different ratios of FePc to CN are shown in Figure S4b–e.…”

Immobilized Molecular Catalysts for CO2Photoreduction

“…Mo and co‐workers reported the synthesis of the FePc@g‐C 3 N 4 hybrid catalyst by mixing g‐C 3 N 4 and FePc in refluxing DMF ( Scheme ). [ 128 ] The FePc@g‐C 3 N 4 composite was fully characterized and the scanning electron microscope images confirmed a porous structure consisting of nanosheets with lamellar morphology, showing no significant changes upon loading the metallophthalocyanine complex, which is indicative that the FePc molecules are uniformly distributed on the g‐C 3 N 4 surface. The FePc@g‐C 3 N 4 material was applied as photocatalyst in CO 2 reduction, in which g‐C 3 N 4 works as the light‐harvesting unit while FePc acts as the catalytic center.…”

“…Synthesis of FePc@g‐C 3 N 4 photocatalyst. Reproduced with permission, [ 128 ] Copyright 2021, Royal Society of Chemistry.…”

Synthesis of mixed-valence Cu phthalocyanine/graphene/g-C3N4 ultrathin heterojunctions as efficient photocatalysts for CO2 reduction

“…17,18 Lu et al confirmed that FePc can improve the photoactivity of CN nanosheets for CO 2 reduction due to the enhanced charge separation and the Fe sites. 19 Sun et al demonstrated that CuPc with Cu-N 4 sites could act as an electronic platform to accept photogenerated electrons from UCN through a highlevel-energy electron (HLEE) transfer process. 20 As for the CuPc/UCN heterojunction, the advantage of the thermodynamic energy of photoelectrons and the Cu-N 4 sites remained, suggesting CuPc matched with UCN for highefficiency photocatalytic CO 2 reduction.…”