Fundamentals and applications of photocatalytic CO2 methanation

Ulmer, Ulrich; Dingle, Thomas L.; Duchesne, Paul N.; Morris, Robert H.; Tavasoli, Alexandra; Wood, Thomas E.; Ozin, Geoffrey A.

doi:10.1038/s41467-019-10996-2

Cited by 328 publications

(195 citation statements)

References 96 publications

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“…A different approach is based in the use of H 2 instead of H 2 O as reactant in the so‐called photocatalytic CO 2 methanation. It should be noted that while the formation of CH 4 and O 2 from CO 2 and H 2 O is extremely endergonic with a large positive change in Gibbs energy (ΔG 0 298K = 818 KJ mol −1 ), methanation is among the few exothermic reactions involving CO 2 with a negative Gibbs energy of −165 KJ mol −1 166…”

Section: Applicationsmentioning

confidence: 99%

“…Therefore, photocatalytic CO 2 reduction is a very challenging reaction and the reported efficiencies are still far from industrial requirements. A large variety of photocatalystic systems have been developed to enhance the photocatalytic activity toward CO 2 reduction 166–168. In this context, the structural features of PSCs in terms of porosity and crystallinity can contribute to improve further the photocatalytic activity.…”

Section: Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Porous Single‐Crystal‐Based Inorganic Semiconductor Photocatalysts for Energy Production and Environmental Remediation: Preparation, Modification, and Applications

Niu

Albero

Atienzar

et al. 2020

Adv Funct Materials

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Semiconductor photocatalytic and photovoltaic performance depends on crystallinity and surface area to a large extent. One strategy that has recently emergyed to improve semiconductor photoresponse efficiency is their synthesis as porous single crystals (PSCs), therefore providing simultaneously high crystallinity, minimization of grain boundaries, and large specific surface area. Other factors, such as high density of active sites, and enhanced light absorption, also contribute to increased PSC photoresponse with respect to analogous bulk or amorphous materials. This review initially presents the concept and main properties of PSCs. Then, the synthetic routes and the applications as photocatalysts and as photovoltaic devices, mainly in sunlight applications, are summarized. The synthetic procedures have been classified according to the mechanism of pore generation. Applications cover photocatalysis for environmental remediation, solar fuels production, selective photooxidation of organic compounds, and photovoltaic devices. Finally, a summary and views on future developments are provided. The purpose of this review is to show how the use of PSCs is a powerful general methodology applicable beyond metal oxides and can ultimately lead to sufficient photoresponse efficiency, bringing these processes close to commercial application.

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Section: Applicationsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Porous Single‐Crystal‐Based Inorganic Semiconductor Photocatalysts for Energy Production and Environmental Remediation: Preparation, Modification, and Applications

Niu

Albero

Atienzar

et al. 2020

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…Photocatalysis is a large and varied field that, alongside biocatalysis, is showing significant growth [19][20][21]. Driving thermodynamically uphill chemical reactions with light has enabled diverse catalysis, including a range of synthetic organic transformations and small-molecule activations [22][23][24][25][26][27][28]. Light-driven reactions often have auspicious properties not present in dark reactions.…”

Section: Biotechnology and Applied Biochemistrymentioning

confidence: 99%

Light‐driven catalysis with engineered enzymes and biomimetic systems

Edwards

Bren

2020

Biotech and App Biochem

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Efforts to drive catalytic reactions with light, inspired by natural processes like photosynthesis, have a long history and have seen significant recent growth. Successfully engineering systems using biomolecular and bioinspired catalysts to carry out light‐driven chemical reactions capitalizes on advantages offered from the fields of biocatalysis and photocatalysis. In particular, driving reactions under mild conditions and in water, in which enzymes are operative, using sunlight as a renewable energy source yield environmentally friendly systems. Furthermore, using enzymes and bioinspired systems can take advantage of the high efficiency and specificity of biocatalysts. There are many challenges to overcome to fully capitalize on the potential of light‐driven biocatalysis. In this mini‐review, we discuss examples of enzymes and engineered biomolecular catalysts that are activated via electron transfer from a photosensitizer in a photocatalytic system. We place an emphasis on selected forefront chemical reactions of high interest, including CH oxidation, proton reduction, water oxidation, CO2 reduction, and N2 reduction.

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“…For CO 2 reduction into fuels, increasing selectivity and production efficiency have been very important issues [ 1 , 2 , 3 , 4 , 5 ]. Many strategies have been employed such as defect controlling [ 6 ], crystal facet tailoring [ 7 , 8 ], metal alloys/cocatalysts [ 9 , 10 ], support [ 11 ], and hybridization [ 12 ]. For hydrogen production, diverse strategies have also been employed [ 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic CO2 Reduction and Electrocatalytic H2 Evolution over Pt(0,II,IV)-Loaded Oxidized Ti Sheets

et al. 2020

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Energy recycling and production using abundant atmospheric CO2 and H2O have increasingly attracted attention for solving energy and environmental problems. Herein, Pt-loaded Ti sheets were prepared by sputter-deposition and Pt4+-reduction methods, and their catalytic activities on both photocatalytic CO2 reduction and electrochemical hydrogen evolution were fully demonstrated. The surface chemical states were completely examined by X-ray photoelectron spectroscopy before and after CO2 reduction. Gas chromatography confirmed that CO, CH4, and CH3OH were commonly produced as CO2 reduction products with total yields up to 87.3, 26.9, and 88.0 μmol/mol, respectively for 700 °C-annealed Ti under UVC irradiation for 13 h. Pt-loading commonly negated the CO2 reduction yields, but CH4 selectivity was increased. Electrochemical hydrogen evolution reaction (HER) activity showed the highest activity for sputter-deposited Pt on 400 °C-annealed Ti with a HER current density of 10.5 mA/cm2 at −0.5 V (vs. Ag/AgCl). The activities of CO2 reduction and HER were found to be significantly dependent on both the nature of Ti support and the oxidation states (0,II,IV) of overlayer Pt. The present result could provide valuable information for designing efficient Pt/Ti-based CO2 recycle photocatalysts and electrochemical hydrogen production catalysts.

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Fundamentals and applications of photocatalytic CO2 methanation

Cited by 328 publications

References 96 publications

Porous Single‐Crystal‐Based Inorganic Semiconductor Photocatalysts for Energy Production and Environmental Remediation: Preparation, Modification, and Applications

Porous Single‐Crystal‐Based Inorganic Semiconductor Photocatalysts for Energy Production and Environmental Remediation: Preparation, Modification, and Applications

Light‐driven catalysis with engineered enzymes and biomimetic systems

Photocatalytic CO2 Reduction and Electrocatalytic H2 Evolution over Pt(0,II,IV)-Loaded Oxidized Ti Sheets

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