Enhanced photostability of cuprous oxide by lignin films on glassy carbon electrodes in the transformation of carbon dioxide

Landaeta, Esteban; Schultz, Zachary D.; Burgos, Ana Esperanza; Schrebler, Ricardo; Isaacs, Mauricio

doi:10.1039/c8gc00365c

Cited by 18 publications

(16 citation statements)

References 72 publications

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“…At more positive and negative potentials, the electrode degrades rapidly, which is in agreement with previous reports with Cu 2 O. 63 These stability values allowed us to select the overpotential for electrolysis to detect the products.…”

Section: ■ Results and Discussionsupporting

confidence: 90%

“…The results show that the Ag/Cu 2 O/CuO electrode remains stable in a potential window between 0.1 and −0.4 V versus Ag/AgCl. At more positive and negative potentials, the electrode degrades rapidly, which is in agreement with previous reports with Cu 2 O . These stability values allowed us to select the overpotential for electrolysis to detect the products.…”

Section: Resultssupporting

confidence: 90%

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Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO₂ Reduction to Acetate at Low Overpotential

Landaeta

Masitas

Clarke

et al. 2020

ACS Appl. Nano Mater.

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The photoelectrocatalytic reduction of CO 2 uses sunlight to reduce the external energy needed to convert this greenhouse gas into value-added products. We report the deposition of a thin film of copper oxide onto a large-surface-area plasmonic silver structure, which generates an efficient photoelectrocatalyst for CO 2 reduction. Using incoherent visible light illumination and applying −0.4 V versus Ag/AgCl(KCl 1M), CO 2 was reduced to acetate with a faradaic efficiency of 54%. Rather than adding plasmonic nanoparticles as sensitizers onto semiconductors, here we electrodeposit a thin uniform layer of Cu 2 O/CuO over a plasmonic silver structure. The formation of acetate at this low potential has not been reported before and appears to arise from synergistic effects in this hybrid plasmonic-semiconductor material. In this work, we investigate changes in the photophysics under different preparation conditions. Varying the deposition time of Cu 2 O/CuO deposited onto the Ag to form the Ag/ Cu 2 O/CuO electrodes alters electron−hole recombination. The Ag/Cu 2 O/CuO electrodes show the highest photocurrent density when a minimal Cu 2 O/CuO film covers the Ag structure. Synergistic effects between the localized surface plasmon resonance of silver and semiconductor properties of Cu 2 O/CuO decrease the necessary overpotential required for CO 2 reduction, reduce charge recombination processes, and stabilize the Cu 2 O/ CuO semiconductor on the photoelectrode. The stabilization of Cu 2 O/CuO in the presence of energetic charge carriers is believed to be key to producing acetate with high efficiency. These properties suggest an interesting approach to photoelectrocatalytic materials.

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Section: ■ Results and Discussionsupporting

confidence: 90%

Section: Resultssupporting

confidence: 90%

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO₂ Reduction to Acetate at Low Overpotential

Landaeta

Masitas

Clarke

et al. 2020

ACS Appl. Nano Mater.

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“…Electrochemical capacitor cell based on symmetric ASC 2 electrodes, cellulose separator, and 1 M H 2 SO 4 electrolyte: (a) galvanostatic charge/discharge curves recorded at current densities of 1–10 A g –1 (inset: charge/discharge curve recorded at 0.1 A g –1 ), (b) plot of specific capacitances calculated at the current densities, and (c) Ragone plots of the cell and other previously reported similar materials (see refs , − ).…”

Section: Resultsmentioning

confidence: 93%

“…The microporosity was also enhanced, except in the case of AC 2 . The cell wall of the cone contains stiff cellulose microfibrils embedded in a swellable matrix consisting of hemicelluloses, pectin, structural proteins, and lignin . The KOH solution can cause swelling of the cell wall, thereby enhancing the porosity .…”

Section: Resultsmentioning

confidence: 99%

Selective Incorporation of Aqueous-Phase SWNTs into Pine Cones: A Unique Route to Creating Versatile Carbon Precursors for Electrode Materials

Han

Park

Kim

et al. 2018

ACS Sustainable Chem. Eng.

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Selective impregnation of single-walled carbon nanotubes (SWNTs) into the interior of pine cones was achieved via inherent folding actuation of the cone by water absorption. Individually dispersed aqueous-phase SWNTs were incorporated into the cone along the pathway of water absorption, and consequently, a concentrated SWNT inclusion was formed on the scales of the cone. To fully exploit its properties as a carbon precursor, the cone was further treated with potassium hydroxide (KOH) solution. The KOH treatment altered the qualitative properties of the cone, which was used to generate activated carbons, and led to swelling of the cell wall of the cone to ultimately increase the size of the pores formed via carbonization. Inclusion of the SWNTs in the cone and the effect of KOH treatment were determined by the characteristics of the constituent tissues of the cone, which offered the opportunity of achieving tissue-dependent textural and electrochemical properties of the carbonized cones. Representatively, the activated and SWNT-impregnated carbonized cone sample (from a specific part of the scale) possessed the optimized properties of high surface area (639 m2 g–1) and high specific capacitance (310 F g–1). As a model application, the carbonized cone was evaluated as an electrode material for electrochemical capacitors, and demonstrated energy and power densities exceeding those of previously reported biomass-derived carbons. Our approach provides more options for improving the properties of biomass-derived carbons. Furthermore, it is expected to provide a useful way to bridge the dimensional gap between the nanocarbon species and the biomass precursors to promote commercialization of the materials.

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“…Since Halmann first reported the phenomenon of semiconductor p‐GaP photoelectrocatalytic reduction of CO 2 in 1978, photoelectrocatalytic CO 2 reduction has aroused great interest of many researches . Photoelectrocatalytic CO 2 reduction by using metallic oxide catalysts was perceived as a promising approach to convert CO 2 to useful chemicals such as methanol, ethanol, formaldehyde, methane, etc. The approach could play a role in relieving the present environmental problems and generating fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

Photoelectrocatalytic Reduction of CO₂ over CuBi₂O₄/TiO₂‐NTs under Simulated Solar Irradiation

Zhang

et al. 2020

ChemistrySelect

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The present study focused on the photoelectrocatalytic reduction of CO2 on CuBi2O4/TiO2‐NTs(TiO2 nanotube arrays)catalyst under simulated solar irradiation. CuBi2O4 was successfully loaded on TiO2‐NTs via pulse deposition regime from a nitric acid aqueous solution with Bi3+/Cu2+ molar ratio of 2, followed by calcination in air at 450 °C. A series of condition experiments were conducted to obtain excellent‐performance CuBi2O4 film. The crystalline structure, morphology and elemental composition of catalysts were characterized by X‐ray diffractometer(XRD), field‐emission scanning electron microscope (FE‐SEM) and energy dispersive spectroscopy (EDS). Light absorption characteristics were analyzed by ultraviolet‐visible spectrophotometer (UV‐Vis). Experimental results show that the coupling of CuBi2O4 and TiO2‐NTs leads to a better visible light response and photoelectrocatalytic performance for CO2 reduction. The photocurrent on CuBi2O4/TiO2‐NTs electrode increases significantly compared with that on TiO2‐NTs. Under optimized experimental condition, the photocurrent is up to 0.5 mA cm−2 at potential of −0.5 V vs. SCE. The liquid products determined by Gas Chromatograph are mainly composed of ethanol with minor formaldehyde.

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Enhanced photostability of cuprous oxide by lignin films on glassy carbon electrodes in the transformation of carbon dioxide

Abstract: Lignin is a residual product can be reused for stabilize Cu2O on modified electrodes in CO2 reduction.

Cited by 18 publications

References 72 publications

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO₂ Reduction to Acetate at Low Overpotential

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO₂ Reduction to Acetate at Low Overpotential

Selective Incorporation of Aqueous-Phase SWNTs into Pine Cones: A Unique Route to Creating Versatile Carbon Precursors for Electrode Materials

Photoelectrocatalytic Reduction of CO₂ over CuBi₂O₄/TiO₂‐NTs under Simulated Solar Irradiation

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Enhanced photostability of cuprous oxide by lignin films on glassy carbon electrodes in the transformation of carbon dioxide

Abstract: Lignin is a residual product can be reused for stabilize Cu2O on modified electrodes in CO2 reduction.

Cited by 18 publications

References 72 publications

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO2 Reduction to Acetate at Low Overpotential

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO2 Reduction to Acetate at Low Overpotential

Selective Incorporation of Aqueous-Phase SWNTs into Pine Cones: A Unique Route to Creating Versatile Carbon Precursors for Electrode Materials

Photoelectrocatalytic Reduction of CO2 over CuBi2O4/TiO2‐NTs under Simulated Solar Irradiation

Contact Info

Product

Resources

About

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO₂ Reduction to Acetate at Low Overpotential

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO₂ Reduction to Acetate at Low Overpotential

Photoelectrocatalytic Reduction of CO₂ over CuBi₂O₄/TiO₂‐NTs under Simulated Solar Irradiation