Inter-plane 2D/2D ultrathin La2Ti2O7/Ti3C2 MXene Schottky heterojunctions toward high-efficiency photocatalytic CO2 reduction

Wang, Ke; Cheng, Miao; Wang, Nan; Liu, Yi; Liang, Junwei; Guan, Jie; Liu, Maochang; Zhou, Jiancheng; Li, Naixu

doi:10.1016/s1872-2067(22)64155-x

Cited by 29 publications

(5 citation statements)

References 79 publications

(85 reference statements)

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“…As a result, the total yield of CH 4 and CH 3 OH obtained on the optimized sample, TB2, was 4.6 times than that of pristine Bi 2 WO 6 . In addition, there are other MXenes/metal oxides photocatalysts used in photocatalytic CO 2 reduction such as InVO 4 /Ti 3 C 2 T x , [ 77 ] Ti 3 C 2 /La 2 Ti 2 O 7 , [ 78 ] Bi 2 O 2 SiO 3 /Ti 3 C 2 , [ 79 ] and meso ‐TiO 2 @ZnIn 2 S 4 /Ti 3 C 2 . [ 80 ]…”

Section: Mxenes‐based Photocatalysts For Photocatalytic Co2 Reductionmentioning

confidence: 99%

Recent Advances in Diverse MXenes‐Based Structures for Photocatalytic CO₂ Reduction into Renewable Hydrocarbon Fuels

Tang,

Li,

et al. 2024

Adv Funct Materials

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Photocatalytic CO2 reduction into renewable hydrocarbon fuels is a green solution to address CO2 emission and energy issues simultaneously. However, the fast recombination of photogenerated charge carriers and the sluggish surface reaction kinetics restrict the efficiency of photocatalytic CO2 reduction. The emergence of 2D MXenes has potential in improving the efficiency of photocatalytic CO2 reduction, owing to their high electrical conductivity, flexible structural properties, and abundant active sites. Hence, this review will concisely summarize and highlight recent advances of MXenes‐based photocatalysts used in photocatalytic CO2 reduction. First, the synthesis and properties of MXenes is briefly introduced. Second, the mechanism of CO2 photoreduction along with the roles of MXenes in photocatalytic CO2 reduction are summarized, including promoting the adsorption of CO2, enhancing the separation of photo‐induced charge carriers, acting as a robust support, and photothermal effect. Third, different kinds of MXenes‐based photocatalysts such as MXenes/metal oxides, MXenes/nitrides, MXenes/LDH, MXenes/perovskite, and MXene‐derived photocatalysts for CO2 reduction are classified via the type of semiconductors. Finally, the challenges and perspectives are also presented, including exploring suitable MXenes via machine learning, uncovering the structure‐activity relationship by in situ, time‐ and space‐resolved characterization techniques, improving anti‐oxidization ability, and scale‐up applications.

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Section: Mxenes‐based Photocatalysts For Photocatalytic Co2 Reductionmentioning

confidence: 99%

Recent Advances in Diverse MXenes‐Based Structures for Photocatalytic CO₂ Reduction into Renewable Hydrocarbon Fuels

Tang,

Li,

et al. 2024

Adv Funct Materials

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“…In another work, Wang et al used a solvothermal in situ self-assembly strategy to construct interplanar 2D/2D heterostructures between La 2 Ti 2 O 7 and Ti 3 C 2 MXene, which improved the photocatalytic activity of MXene. [33] By changing the mass ratio of MXene, the final sample is denoted as LTM-X. According to the PL spectrum, photocurrent response, and electrochemical impedance characterization, it is found that LTM-3 has the weakest PL peak, the strongest photocurrent response, and the smallest resistance, and theoretically has the best photocatalytic performance.…”

Section: Mxenementioning

confidence: 99%

“…d) GC-MS spectra of the photocatalytic 13 CO 2 reduction over LTM-3. d) AFM images of La 2 Ti 2 O 7 nanosheets, e) AFM images of few-layered Ti 3 C 2 MXene, and corresponding height cutaway view (f).Reproduced with permission [33]. Copyright 2023, Elsevier.…”

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confidence: 99%

2D Atomic Layers for CO₂ Photoreduction

Yan,

Zhang,

Hao

et al. 2023

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Artificial photosynthesis can convert carbon dioxide into high value‐added chemicals. However, due to the poor charge separation efficiency and CO2 activation ability, the conversion efficiency of photocatalytic CO2 reduction is greatly restricted. Ultrathin 2D photocatalyst emerges as an alternative to realize the higher CO2 reduction performance. In this review, the basic principle of CO2 photoreduction is introduced, and the types, advantages, and advances of 2D photocatalysts are reviewed in detail including metal oxides, metal chalcogenides, bismuth‐based materials, MXene, metal‐organic framework, and metal‐free materials. Subsequently, the tactics for improving the performance of 2D photocatalysts are introduced in detail via the surface atomic configuration and electronic state tuning such as component tuning, crystal facet control, defect engineering, element doping, cocatalyst modification, polarization, and strain engineering. Finally, the concluding remarks and future development of 2D photocatalysts in CO2 reduction are prospected.

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“…This unique feature enables the incorporation of a wide range of elements at the A and B sites without losing structural integrity, which helps tailor the physicochemical properties according to specific applications. Among the various perovskite materials, lanthanum orthoferrite stands out for its environmentally friendly characteristics, stability under aqueous, thermal and reducing conditions, and the small band gap that can be induced by the visible region of the solar spectrum. − Additionally, it can serve as a suitable heterogeneous Fenton catalyst due to the redox center Fe 3+ ↔ Fe 2+ . The concentration of Fe also plays an important role in the photocatalytic activity of the catalyst.…”

Section: Introductionmentioning

confidence: 99%

Kinetic Comparison of Photocatalysis with the Photo-Fenton Process on the Removal of Tetracycline Using Bismuth-Modified Lanthanum Orthoferrite Nanostructures

James,

Rodney,

N. K.

2024

ACS Appl. Nano Mater.

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In this study, we investigate visible-light-driven photocatalytic and photo-Fenton degradation of tetracycline (TC) using bismuth-impregnated lanthanum orthoferrite (Bi x La 1−x FeO 3 (x = 0, 0.01, 0.05, 0.07)) nanostructures. Bi doping significantly improves the removal of TC, with Bi 0.05 La 0.95 FeO 3 (LFO-Bi5) exhibiting optimal degradation. In both photocatalysis (PC) and photo-Fenton catalysis (PFC), the reaction follows pseudo-first-order kinetics, with LFO-Bi5 showing rate constants of 0.0065/min for PC and 0.02716/min for PFC, surpassing LaFeO 3 by 2.76 and 3.43 times, respectively. The long-term presence of photoexcited carriers in LFO-Bi5 is confirmed through transient PL, TRPL, and EIS studies. The superior degradation capabilities are attributed to radicals in photocatalysis and OH • radicals in photo-Fenton catalysis. The PFC exhibited faster kinetics due to the rapid production of OH • radicals via the Fe-redox cycle and direct dissociation of H 2 O 2 at oxygen vacancies. LFO-Bi5 demonstrates excellent photostability and reusability for up to six consecutive cycles. The degradation pathway and toxicological properties of the intermediates are analyzed, highlighting the potential of LFO-Bi5 catalysts in antibiotic-contaminated water treatment.

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Inter-plane 2D/2D ultrathin La2Ti2O7/Ti3C2 MXene Schottky heterojunctions toward high-efficiency photocatalytic CO2 reduction

Cited by 29 publications

References 79 publications

Recent Advances in Diverse MXenes‐Based Structures for Photocatalytic CO₂ Reduction into Renewable Hydrocarbon Fuels

Recent Advances in Diverse MXenes‐Based Structures for Photocatalytic CO₂ Reduction into Renewable Hydrocarbon Fuels

2D Atomic Layers for CO₂ Photoreduction

Kinetic Comparison of Photocatalysis with the Photo-Fenton Process on the Removal of Tetracycline Using Bismuth-Modified Lanthanum Orthoferrite Nanostructures

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Inter-plane 2D/2D ultrathin La2Ti2O7/Ti3C2 MXene Schottky heterojunctions toward high-efficiency photocatalytic CO2 reduction

Cited by 29 publications

References 79 publications

Recent Advances in Diverse MXenes‐Based Structures for Photocatalytic CO2 Reduction into Renewable Hydrocarbon Fuels

Recent Advances in Diverse MXenes‐Based Structures for Photocatalytic CO2 Reduction into Renewable Hydrocarbon Fuels

2D Atomic Layers for CO2 Photoreduction

Kinetic Comparison of Photocatalysis with the Photo-Fenton Process on the Removal of Tetracycline Using Bismuth-Modified Lanthanum Orthoferrite Nanostructures

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Product

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Recent Advances in Diverse MXenes‐Based Structures for Photocatalytic CO₂ Reduction into Renewable Hydrocarbon Fuels

Recent Advances in Diverse MXenes‐Based Structures for Photocatalytic CO₂ Reduction into Renewable Hydrocarbon Fuels

2D Atomic Layers for CO₂ Photoreduction