Photocatalytic syngas synthesis from CO2 and H2O using ultrafine CeO2-decorated layered double hydroxide nanosheets under visible-light up to 600 nm

Tan, Ling; Kipkorir, Peter; Ren, Jing; Du, Baoyang; Hao, Xihong; Zhao, Yufei; Song, Yu‐Fei

doi:10.1007/s11705-020-1947-4

Cited by 27 publications

(16 citation statements)

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“…And the products syngas ratio (H 2 :CO) was precisely tuned from 1 : 1.3 to 15 : 1 by heterostructure CoAl‐LDH/MoS 2 under visible light irradiation (Figure 5a‐b) [24] . We also achieved the tunable ratio of syngas in CO 2 PR by adjusting the amount of CeO 2 modifying MgAl‐LDH [26] . Moreover, on account of the outstanding performance of noble elements in water splitting, we also studied the performance of Pd/CoAl‐LDH.…”

Section: Electronic Structurementioning

confidence: 83%

“…Designing a heterojunction structure in photocatalysts is a vital method to enhance the photocatalytic performance by tuning the internal electronic structure. Traditional semiconductor (such as: MoS 2 , [24] Cu 2 O, [25] CeO 2 , [26] TiO 2 , [20f,27] ZnO, [28] and g-C 3 N 4 , [29] et al) were successfully integrated with LDHs and the synergic interaction in heterostructure catalysts performed efficient activity in reducing CO 2 (Table 1). Recently, a heterostructure CoAl-LDH/MoS 2 photocatalyst was successfully prepared by our group.…”

Section: Electronic Structurementioning

confidence: 99%

“…[24] We also achieved the tunable ratio of syngas in CO 2 PR by adjusting the amount of CeO 2 modifying MgAl-LDH. [26] Moreover, on account of the outstanding performance of noble elements in water splitting, we also studied the performance of Pd/CoAl-LDH. After deposition of Pd cocatalyst, the Pd/CoAl-LDH also showed excellent activity for CO 2 PR to CO with tuning the ratio of CO/H 2 from 1:0.74 to 1 : 3 by adjusting the amount of Pd.…”

Section: Electronic Structurementioning

confidence: 99%

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Recent Progress on Nanostructured Layered Double Hydroxides for Visible‐Light‐Induced Photoreduction of CO₂

Tan

Wang

Zhao

et al. 2020

Chemistry An Asian Journal

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Photoreduction of CO 2 into solar fuels is usually regarded as one of the promising solutions to overcome environmental pollution and the energy crisis. The main challenge in CO 2 photoreduction (CO 2 PR) is the low efficiency and poor selectivity. Layered double hydroxides (LDHs) are a class of 2D materials, consisting with M(OH) 6 octahedra in the host layers and intercalated anions. Owing to the tuneable composition, particle size, morphology, and virtue coordinatively unsaturated active sites, a series of efficient strategies (morphology control, heterostructure, defect control, etc.) in LDH-based photocatalysts have been efficiently developed to enhance the photocatalytic selectivity and activity for CO 2 PR. This review summarizes recent progress on the LDH-based photocatalysts for CO 2 PR. Al 3 + and transition metal elements, Fe 2 + , Co 2 + , Ni 2 + , Zn 2 + , Cr 3 + , Fe 3 + , etc.) in the laminate layers and A nÀ is the interlaminated anion (such as: NO 3 À , CO 3 2À and SO 4 2À , etc.) in the interlayer. [6b,c,7] It has been widely applied in photocatalyst in the past decades. [8] Ascribe to the tunable atomic structure, the bandgap of LDHs can be tuned from 2.0 eV to 5.4 eV by changing the composition of layer. [9] Moreover, the surface defects (such as: V M , metal vacancy and V OH , hydroxyl vacancy, etc.) as active sites in photocatalysis can be easily introduced by controlling the thickness and size of LDHs etc., thus promoting the efficiency of CO 2 PR. This review focuses on the recent development of the LDHs-based photocatalysts for CO 2 PR, and the corresponding progress of CO 2 PR has achieved great progress from the former CO 2 conversion rate of~1 μmol g À 1 h À 1 to recent 218130 μmol g À 1 h À 1 , and the desirable valuable-product also move from CO to CH 4 and methanol. The major strategies of promoting the CO 2 PR are discussed from different perspective from the morphology and composition, electronic structure, and defects structure for further understanding the relationship between the structure and activity.

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Section: Electronic Structurementioning

confidence: 83%

Section: Electronic Structurementioning

confidence: 99%

Section: Electronic Structurementioning

confidence: 99%

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Recent Progress on Nanostructured Layered Double Hydroxides for Visible‐Light‐Induced Photoreduction of CO₂

Tan

Wang

Zhao

et al. 2020

Chemistry An Asian Journal

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“…For the CH 4 generation reaction (Eq. ( 22)), the reaction rate is 3 . In addition, the reaction rate constant of CH 4 is much higher than that of CO and moreover, the reaction rate constant of CO is much higher than that of H 2 (k r _[CH 4 ] (9.43 Â 10 33 ) for Eq.…”

Section: Validation Of the Modelsmentioning

confidence: 99%

“…To mitigate CO 2 emissions, the usage of fossil fuels should be decreased as well as deploying CO 2 capture, utilization and storage strategies. CO 2 utilization via photoreduction to methane (CH 4 ) is a promising method to produce solar fuels aiming at dealing with the problems of insufficiency of sustainable energy and reduction of CO 2 emissions [2,3].…”

Section: Introductionmentioning

confidence: 99%

Investigation of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational fluid dynamic and reaction kinetic modeling

Luo

Thompson

et al. 2021

Front. Chem. Sci. Eng.

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The production of solar fuels via the photoreduction of carbon dioxide to methane by titanium oxide is a promising process to control greenhouse gas emissions and provide alternative renewable fuels. Although several reaction mechanisms have been proposed, the detailed steps are still ambiguous, and the limiting factors are not well defined. To improve our understanding of the mechanisms of carbon dioxide photoreduction, a multi-physics model was developed using COMSOL. The novelty of this work is the computational fluid dynamic model combined with the novel carbon dioxide photoreduction intrinsic reaction kinetic model, which was built based on three-steps, namely gas adsorption, surface reactions and desorption, while the ultraviolet light intensity distribution was simulated by the Gaussian distribution model and Beer-Lambert model. The carbon dioxide photoreduction process conducted in a laboratory-scale reactor under different carbon dioxide and water moisture partial pressures was then modeled based on the intrinsic kinetic model. It was found that the simulation results for methane, carbon monoxide and hydrogen yield match the experiments in the concentration range of 10−4 mol·m−3 at the low carbon dioxide and water moisture partial pressure. Finally, the factors of adsorption site concentration, adsorption equilibrium constant, ultraviolet light intensity and temperature were evaluated.

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Photocatalytic CO₂ Reduction by Near‐Infrared‐Light (1200 nm) Irradiation and a Ruthenium‐Intercalated NiAl‐Layered Double Hydroxide

Li,

Yue

et al. 2024

Angewandte Chemie

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Near‐infrared light‐driven photocatalytic CO2 reduction (NIR‐CO2PR) holds tremendous promise for the production of valuable commodity chemicals and fuels. However, designing photocatalysts capable of reducing CO2 with low energy NIR photons remains challenging. Herein, a novel NIR‐driven photocatalyst comprising an anionic Ru complex intercalated between NiAl‐layered double hydroxide nanosheets (NiAl‐Ru‐LDH) is shown to deliver efficient CO2 photoreduction (0.887 μmol h−1) with CO selectivity of 84.81% under 1200 nm illumination and excellent stability over 50 testing cycles. This remarkable performance results from the intercalated Ru complex lowering the LDH band gap (0.98 eV) via a compression‐related charge redistribution phenomenon. Furthermore, transient absorption spectroscopy data verified light‐induced electron transfer from the Ru complex towards the LDH sheets, increasing the availability of electrons to drive CO2PR. The presence of hydroxyl defects in the LDH sheets promotes the adsorption of CO2 molecules and lowers the energy barriers for NIR‐CO2PR to CO. To our knowledge, this is one of the first reports of NIR‐CO2PR at wavelengths up to 1200 nm in LDH‐based photocatalyst systems.

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Photocatalytic syngas synthesis from CO2 and H2O using ultrafine CeO2-decorated layered double hydroxide nanosheets under visible-light up to 600 nm

Cited by 27 publications

References 50 publications

Recent Progress on Nanostructured Layered Double Hydroxides for Visible‐Light‐Induced Photoreduction of CO₂

Recent Progress on Nanostructured Layered Double Hydroxides for Visible‐Light‐Induced Photoreduction of CO₂

Investigation of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational fluid dynamic and reaction kinetic modeling

Photocatalytic CO₂ Reduction by Near‐Infrared‐Light (1200 nm) Irradiation and a Ruthenium‐Intercalated NiAl‐Layered Double Hydroxide

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Photocatalytic syngas synthesis from CO2 and H2O using ultrafine CeO2-decorated layered double hydroxide nanosheets under visible-light up to 600 nm

Cited by 27 publications

References 50 publications

Recent Progress on Nanostructured Layered Double Hydroxides for Visible‐Light‐Induced Photoreduction of CO2

Recent Progress on Nanostructured Layered Double Hydroxides for Visible‐Light‐Induced Photoreduction of CO2

Investigation of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational fluid dynamic and reaction kinetic modeling

Photocatalytic CO2 Reduction by Near‐Infrared‐Light (1200 nm) Irradiation and a Ruthenium‐Intercalated NiAl‐Layered Double Hydroxide

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Product

Resources

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Recent Progress on Nanostructured Layered Double Hydroxides for Visible‐Light‐Induced Photoreduction of CO₂

Recent Progress on Nanostructured Layered Double Hydroxides for Visible‐Light‐Induced Photoreduction of CO₂

Photocatalytic CO₂ Reduction by Near‐Infrared‐Light (1200 nm) Irradiation and a Ruthenium‐Intercalated NiAl‐Layered Double Hydroxide