Photocatalytic reduction of CO2 on Cu2O-loaded Zn-Cr layered double hydroxides

Jiang, Haoyang; Katsumata, Ken Ichi; Hong, Jeongsoo; Yamaguchi, Akira; Nakata, Kohei; Terashima, Chiaki; Matsushita, Nobuhiro; Miyauchi, Mutsumi; Fujishima, Akira

doi:10.1016/j.apcatb.2017.11.011

Cited by 136 publications

(61 citation statements)

References 44 publications

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“…The oxidation half reaction is performed by h + on Nb 3 O 8 − while the Cu oxide clusters performs the CO 2 reduction reaction. Cu 2 O acts as co‐catalysts in Cu 2 O@Zn−Cr layered double hydroxides, improving charge separation and providing active sites for CO 2 reduction . The effect of additives on the photocatalytic activity but most importantly on the selectivity (CO 2 reduction vs H 2 evolution) was also demonstrated in this study (Figure ).…”

Section: Cu‐based Materials For Co2 Photocatalytic Reductionsupporting

confidence: 61%

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Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

2018

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Problems derived from climate change dictate the reestablishment of our prospective in energy production. In this direction, converting solar energy through photocatalysis into suitable fuels such as hydrogen and carbon‐based fuels by water splitting and CO2 reduction, respectively, has been established as a promising approach. Currently, the main concern in this field is the development of cost‐effective and efficient photocatalysts. Among the different systems studied, Cu‐based photocatalysts are considered attractive candidates for both applications due to their relative low‐cost, the natural abundance of the constituents and their promising reactivity. In this review, the current progress in the field of Cu‐based photoactive materials for both H2 production and CO2 reduction will be discussed. Finally, an outlook on the challenges and future research directions is given.

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Section: Cu‐based Materials For Co2 Photocatalytic Reductionsupporting

confidence: 61%

“…It should be noted that CO has been identified as the main gaseous product during CO 2 photoreduction reaction using copper catalysts ,,,,. This is probably due to the weak binding of CO on copper surfaces that prevents subsequent reactions …”

Section: Cu‐based Materials For Co2 Photocatalytic Reductionmentioning

confidence: 99%

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

2018

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“…The pristine ZnCr‐LDH nanosheets (ZnCr‐0h) showed two distinct absorption peaks at 410 and 570 nm, which were readily assigned to the 4 A 2g → 4 T 1g (F) and 4 A 2g → 4 T 2g (F) d–d transitions of Cr 3+ ions. [ 18 ] For the etched ZnCr‐LDH nanosheets, an obvious redshift in the positions of these signals occurred, similar to the redshift seen for defect‐rich TiO 2 , [ 19 ] which suggests the creation of abundant Vo in the etched ZnCr‐LDH nanosheets. [ 5a,20 ] Quantitative energy dispersive spectrometry (EDS) analysis revealed that that etched ZnCr‐LDH nanosheets possessed less zinc than the pristine ZnCr‐LDH nanosheets (Figure S3, Supporting Information), which was further affirmed through inductively coupled plasma optical emission spectrometer measurements (Table S1, Supporting Information).…”

Section: Figurementioning

confidence: 69%

Alkali Etching of Layered Double Hydroxide Nanosheets for Enhanced Photocatalytic N₂ Reduction to NH₃

Zhao

Zheng

Shi

et al. 2020

Advanced Energy Materials

193

137

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Layered double hydroxide (LDH) nanosheets show good activity in a wide range of photoreactions, with this activity being generally attributable to an abundance of surface oxygen vacancies or coordinatively unsaturated metal cations in the nanosheets which serve as active sites for reactant adsorption and activation. Recently, LDH nanosheets have been shown to be very effective for photocatalytic N2 reduction to NH3 using water as the reducing agent. Herein, it is demonstrated that a simple pretreatment of ZnCr‐LDH, ZnAl‐LDH, and NiAl‐LDH nanosheets with aqueous NaOH can greatly enhance the concentration of oxygen vacancies and low coordination metal centers in the nanosheets, thus significantly enhancing their photocatalytic activity for N2 reduction to NH3 under UV–vis irradiation (without the need for added sacrificial agents or cocatalysts). The facile alkali etching strategy introduced here is expected to be widely adopted in the future development of high‐performance LDH photocatalysts for ammonia production and other challenging chemical transformations (e.g., CO2 reduction and water splitting).

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“…Several groups of cocatalysts have been proposed for CO 2 photocatalytic reduction: noble metals, 15 metal oxides (CuO, 16,17 23 metal-organic-frameworks, 24 carbon nitrides, 25-29 suldes 30 or biological systems. 31,32 Noble metalbased cocatalysts represent almost a half of studied systems.…”

Section: Introductionmentioning

confidence: 99%

Design of core–shell titania–heteropolyacid–metal nanocomposites for photocatalytic reduction of CO₂ to CO at ambient temperature

Moldovan

Khodakov

2019

Nanoscale Adv.

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Photocatalytic reduction of CO2 on Cu2O-loaded Zn-Cr layered double hydroxides

Cited by 136 publications

References 44 publications

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

Alkali Etching of Layered Double Hydroxide Nanosheets for Enhanced Photocatalytic N₂ Reduction to NH₃

Design of core–shell titania–heteropolyacid–metal nanocomposites for photocatalytic reduction of CO₂ to CO at ambient temperature

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Photocatalytic reduction of CO2 on Cu2O-loaded Zn-Cr layered double hydroxides

Cited by 136 publications

References 44 publications

Photocatalysis for Hydrogen Production and CO2 Reduction: The Case of Copper‐Catalysts

Photocatalysis for Hydrogen Production and CO2 Reduction: The Case of Copper‐Catalysts

Alkali Etching of Layered Double Hydroxide Nanosheets for Enhanced Photocatalytic N2 Reduction to NH3

Design of core–shell titania–heteropolyacid–metal nanocomposites for photocatalytic reduction of CO2 to CO at ambient temperature

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Product

Resources

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Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

Photocatalysis for Hydrogen Production and CO₂ Reduction: The Case of Copper‐Catalysts

Alkali Etching of Layered Double Hydroxide Nanosheets for Enhanced Photocatalytic N₂ Reduction to NH₃

Design of core–shell titania–heteropolyacid–metal nanocomposites for photocatalytic reduction of CO₂ to CO at ambient temperature