Photocatalytic CO₂ reduction using a molecular cobalt complex deposited on TiO₂ nanoparticles

Abstract

Hybrid photocatalysts were prepared by depositing a macrocyclic cobalt complex on TiO2 surfaces. Upon UV light irradiation, photoexcited electrons in TiO2 nanoparticles were transferred to the surface cobalt catalyst for CO2 reduction.

Closing the pressure gap in x-ray photoelectron spectroscopy by membrane hydrogenation

“…Cobalt is intensively studied as a catalyst in the form of metal nanoparticles or metal complexes for the electro- 26 or photoreduction 27 of CO 2 for the production of sustainable fuels. More specifically, Co catalysts are particularly well suited for the so-called Fischer-Tropsch synthesis.…”

One‐Pot Synthesis of Cu‐Nanocluster‐Decorated Brookite TiO2Quasi‐Nanocubes for Enhanced Activity and Selectivity of CO2 Photoreduction to CH4

“…[1][2][3][4][5][6] Among these, the photocatalytic reduction of CO 2 with H 2 Ot os olar fuels is considered to be the most promising and attractive approach since it can not only convert CO 2 into clean solarf uels but also store the solar energy in those chemical fuels. [3][4][5][6][7][8][9][10] Among various photocatalysts developed, nanosized TiO 2 -basedm aterials are the most extensively used ones in photocatalytic systems because of their high stabilitya nd efficiency under ultraviolet (UV) irradiation. [3][4][5][6][7][8][9][10] In the three TiO 2 polymorphs that exist in nature, anatase and rutile or their mixed crystals have been extensively adopted in the fields of photocatalysis and dye-sensitized solar cells (DSSCs), [3][4][5]11] whereas brookite is rarely investigated due to its thermodynamic metastability.…”

“…[3][4][5][6][7][8][9][10] Among various photocatalysts developed, nanosized TiO 2 -basedm aterials are the most extensively used ones in photocatalytic systems because of their high stabilitya nd efficiency under ultraviolet (UV) irradiation. [3][4][5][6][7][8][9][10] In the three TiO 2 polymorphs that exist in nature, anatase and rutile or their mixed crystals have been extensively adopted in the fields of photocatalysis and dye-sensitized solar cells (DSSCs), [3][4][5]11] whereas brookite is rarely investigated due to its thermodynamic metastability. [12] Although it was reported that brookite TiO 2 exhibited photocatalytic activity as earlya si n 1985, [13] there are very few researches on itsp hotocatalytic application because it is difficult to obtain pure-phase and highquality brookite TiO 2 .…”

Artificial Photosynthetic Systems for CO2 Reduction: Progress on Higher Efficiency with Cobalt Complexes as Catalysts

“…The inorganic materials, such as graphene, carbon nanotubes, carbon nitride, TiO 2 nanoparticles, ands ilicon materials, [35,52] were used as substrates, light harvesters, or cocatalystst oe nhance photocatalytic performance.…”

“…Moreover,s omep reviously reportedm olecular cobalt catalysts have also been used to fabricate hybridc atalysts or photoelectrodes for heterogeneous photocatalytic or photoelectrochemicalCO 2 reduction. [32][33][34][35][36][37][38][39][40][41][42] In this Minireview,w ef ocus on molecular cobalt catalyst systems forp hotocatalytic and photoelectrocatalytic CO 2 reduction. The strategies for homogeneous molecular systems, heterogeneous hybrid systems, and photoelectrochemical cells are reviewed and the design of catalysts, their photocatalytic The conversion of CO 2 into fuels or value-added chemicals is currently afield of great research interest.…”