CO2 photoreduction with H2O to C1 and C2 products over perovskite films of alkaline niobates ANbO3 (A = Li, Na, K)

Luévano-Hipólito, E.; Torres-Martı́nez, Leticia M.

doi:10.1016/j.fuel.2022.123934

Cited by 13 publications

(8 citation statements)

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“…LiNbO 3 mainly yielded CH 3 OH (35 μmol h -1 ) and NaNbO 3 selectively generated HCOOH (54 μmol h -1 ), owing to the position of their conduction bands and the photocarrier density. [67] Although researchers have been studying the mechanism of perovskite oxide photocatalytic reduction of CO 2 , the mechanism in the actual reaction process is still controversial, such as precise active sites, intermediates, and reaction pathways. Therefore, more advanced characterization methods are used to research the reaction mechanism of photocatalytic reduction of CO 2 .…”

Section: Mechanism Of Photocatalytic Co 2 Reduction Over Perovskite O...mentioning

confidence: 99%

“…The conduction band minimum (CBM) of some perovskite oxides is not suitable for CO 2 photoreduction, such as BiFeO 3 , LaFeO 3 , and LaNiO 3 , while other perovskite oxides with proper conduction band have poor photocatalytic reaction efficiency, by virtue of the broad bandgap, fast charge recombination, and weak CO 2 activation at the surface. Up to now, several perovskite oxides have been proposed for photocatalytic CO 2 reduction, such as SrTiO 3 , [61,132] NaNbO 3 , [133,134] NaTaO 3 , [134,135] ANbO 3 (A = Li, Na, K), [67] and others. Due to the difference of A or B cations, the crystal structures of various perovskite oxides show diverse phases.…”

Section: Perovskite Oxide As a Photocatalyst On Its Ownmentioning

confidence: 99%

“…LiNbO 3 mainly yielded CH 3 OH (35 µmol h ‐1 ) and NaNbO 3 selectively generated HCOOH (54 µmol h ‐1 ), owing to the position of their conduction bands and the photocarrier density. [ 67 ]…”

Section: Theory Of Photocatalytic Co2 Reductionmentioning

confidence: 99%

“…For instance, the ANbO 3 (A = Li, Na, K) thin films were prepared by the ink‐jet printing method, showing high activity for CO 2 photoreduction. [ 67 ] The NaNbO 3 thin film performed the highest production of fuels among the ANbO 3 (A = Li, Na, K) thin films. It was chosen to be deposited on alkali‐activated material and stainless‐steel substrates other than glass substrates.…”

Section: Perovskite Oxides and Perovskite Oxide‐based Photocatalysis ...mentioning

confidence: 99%

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Research Progress on Photocatalytic CO₂ Reduction Based on Perovskite Oxides

Wang

Yuan

et al. 2023

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Photocatalytic CO2 reduction to valuable fuels is a promising way to alleviate anthropogenic CO2 emissions and energy crises. Perovskite oxides have attracted widespread attention as photocatalysts for CO2 reduction by virtue of their high catalytic activity, compositional flexibility, bandgap adjustability, and good stability. In this review, the basic theory of photocatalysis and the mechanism of CO2 reduction over perovskite oxide are first introduced. Then, perovskite oxides' structures, properties, and preparations are presented. In detail, the research progress on perovskite oxides for photocatalytic CO2 reduction is discussed from five aspects: as a photocatalyst in its own right, metal cation doping at A and B sites of perovskite oxides, anion doping at O sites of perovskite oxides and oxygen vacancies, loading cocatalyst on perovskite oxides, and constructing heterojunction with other semiconductors. Finally, the development prospects of perovskite oxides for photocatalytic CO2 reduction are put forward. This article should serve as a useful guide for creating perovskite oxide‐based photocatalysts that are more effective and reasonable.

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Section: Mechanism Of Photocatalytic Co 2 Reduction Over Perovskite O...mentioning

confidence: 99%

Section: Perovskite Oxide As a Photocatalyst On Its Ownmentioning

confidence: 99%

Section: Theory Of Photocatalytic Co2 Reductionmentioning

confidence: 99%

Section: Perovskite Oxides and Perovskite Oxide‐based Photocatalysis ...mentioning

confidence: 99%

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Research Progress on Photocatalytic CO₂ Reduction Based on Perovskite Oxides

Wang

Yuan

et al. 2023

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“…The time course of gas production (Figure 3f) demonstrates the high performance of Co/NiO-2 and also reveals a slight decrease of activity owing to the compunction of photosensitize as reported by developed systems in literatures. [31] Apparent quantum yield (AQY) is important parameter to evaluate the intrinsic photocatalytic performance of the materials, [32] and the Co/NiO-2 exhibits a high AQY of 1.96% at 450 nm. The CO/H 2 ratio of syngas generated over Co/NiO-2 is about 1.82, and the obtained syngas is of strong utility as the important feedstock for preparing value-added chemical such as methanol.…”

Section: Superior Syngas Production and Mechanism Revealingmentioning

confidence: 99%

Scalable Synthesis of Holey Deficient 2D Co/NiO Single‐Crystal Nanomeshes via Topological Transformation for Efficient Photocatalytic CO₂ Reduction

Zhang

Zheng

Zhao

et al. 2023

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Preparation of holey, single‐crystal, 2D nanomaterials containing in‐plane nanosized pores is very appealing for the environment and energy‐related applications. Herein, an in situ topological transformation is showcased of 2D layered double hydroxides (LDHs) allows scalable synthesis of holey, single‐crystal 2D transition metal oxides (TMOs) nanomesh of ultrathin thickness. As‐synthesized 2D Co/NiO‐2 nanomesh delivers superior photocatalytic CO2‐syngas conversion efficiency (i.e., VCO of 32460 µmol h−1 g−1 CO and VnormalH2${V_{{{\rm{H}}_2}}}$ of 17840 µmol h−1 g−1 H2), with VCO about 7.08 and 2.53 times that of NiO and 2D Co/NiO‐1 nanomesh containing larger pore size, respectively. As revealed in high‐angle annular dark‐field scanning transmission electron microscopy (HAADF‐STEM), the high performance of Co/NiO‐2 nanomesh primarily originates from the edge sites of nanopores, which carry more defect structures (e.g., atomic steps or vacancies) than basal plane for CO2 adsorption, and from its single‐crystal structure adept at charge transport. Theoretical calculation shows the topological transformation from 2D hydroxide to holey 2D oxide can be achieved, probably since the trace Co dopant induces a lattice distortion and thus a sharp decrease of the dehydration energy of hydroxide precursor. The findings can advance the design of intriguing holey 2D materials with well‐defined geometric and electronic properties.

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Pivotal Impact Factors in Photocatalytic Reduction of CO₂ to Value‐Added C₁ and C₂ Products

Cui,

Labidi,

Liang

et al. 2024

ChemSusChem

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Over the past decades, CO2 greenhouse emission has been considerably increased, causing global warming and climate change. Indeed, converting CO2 into valuable chemicals and fuels is a desired option to resolve issues caused by its continuous emission into the atmosphere. Nevertheless, CO2 conversion has been hampered by the ultrahigh dissociation energy of C=O bonds, which makes it thermodynamically and kinetically challenging. From this prospect, photocatalytic approaches appear promising for CO2 reduction in terms of their efficiency compared to other traditional technologies. Thus, many efforts have been made in the designing of photocatalysts with asymmetric sites and oxygen vacancies, which can break the charge distribution balance of CO2 molecule, reduce hydrogenation energy barrier and accelerate CO2 conversion into chemicals and fuels. Here, we review the recent advances in CO2 hydrogenation to C1 and C2 products utilizing photocatalysis processes. We also pin down the key factors or parameters influencing the generation of C2 products during CO2 hydrogenation. In addition, the current status of CO2 reduction is summarized, projecting the future direction for CO2 conversion by photocatalysis processes.

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CO2 photoreduction with H2O to C1 and C2 products over perovskite films of alkaline niobates ANbO3 (A = Li, Na, K)

Cited by 13 publications

References 58 publications

Research Progress on Photocatalytic CO₂ Reduction Based on Perovskite Oxides

Research Progress on Photocatalytic CO₂ Reduction Based on Perovskite Oxides

Scalable Synthesis of Holey Deficient 2D Co/NiO Single‐Crystal Nanomeshes via Topological Transformation for Efficient Photocatalytic CO₂ Reduction

Pivotal Impact Factors in Photocatalytic Reduction of CO₂ to Value‐Added C₁ and C₂ Products

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CO2 photoreduction with H2O to C1 and C2 products over perovskite films of alkaline niobates ANbO3 (A = Li, Na, K)

Cited by 13 publications

References 58 publications

Research Progress on Photocatalytic CO2 Reduction Based on Perovskite Oxides

Research Progress on Photocatalytic CO2 Reduction Based on Perovskite Oxides

Scalable Synthesis of Holey Deficient 2D Co/NiO Single‐Crystal Nanomeshes via Topological Transformation for Efficient Photocatalytic CO2 Reduction

Pivotal Impact Factors in Photocatalytic Reduction of CO2 to Value‐Added C1 and C2 Products

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Product

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Research Progress on Photocatalytic CO₂ Reduction Based on Perovskite Oxides

Research Progress on Photocatalytic CO₂ Reduction Based on Perovskite Oxides

Scalable Synthesis of Holey Deficient 2D Co/NiO Single‐Crystal Nanomeshes via Topological Transformation for Efficient Photocatalytic CO₂ Reduction

Pivotal Impact Factors in Photocatalytic Reduction of CO₂ to Value‐Added C₁ and C₂ Products