Listar por autoría "f91ca8b7-2f59-4583-a516-f4d4186c64ca"
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2D Bismuthene as a Functional Interlayer between BiVO4 and NiFeOOH for Enhanced Oxygen-Evolution Photoanodes
Wiley (2022-10-26)BiVO4 has attracted wide attention for oxygen-evolution photoanodes in water-splitting photoelectrochemical devices. However, its performance is hampered by electron-hole recombination at surface states. Herein, partially ... -
A low temperature aqueous formate fuel cell using cobalt hexacyanoferrate as a non-noble metal oxidation catalyst
Royal Society of Chemistry (2020-12-01)Cobalt hexacyanoferrate, the Co–Fe Prussian blue derivative (CoFePB), is an effective, selective and stable electrocatalyst for formate oxidation, exhibiting robust performance under a variety of electrolyte conditions. ...
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A metal-organic framework converted catalyst that boosts photo-electrochemical water splitting
Royal Society of Chemistry (2019-04-08)Realization of photo-electrochemical water splitting to generate H2 alternative fuel requires the facilitation of the kinetically-sluggish oxygen evolution reaction (OER) occurring at the photoanode. To do so, there is a ...
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A Perovskite Photovoltaic Mini-Module-CsPbBr3 Photoelectrochemical Cell Tandem Device for Solar-Driven Degradation of Organic Compounds
American Chemical Society (2023-10-02)Recently, halide perovskites have been widely explored for high-efficiency photocatalysis or photoelectrochemical (PEC) cells. Here, in order to make an efficient photoanode electrode for the degradation of pollutants, ...
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An artificial leaf device built with earth-abundant materials for combined H-2 production and storage as formate with efficiency > 10%
Royal Society of Chemistry (2023-02-15)A major challenge for achieving energy transition and transforming the current energy model into distributed production is the development of efficient artificial leaf-type devices capable of directly converting carbon ...
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An integrated photoanode based on non-critical raw materials for robust solar water splitting
Royal Society of Chemistry (2020)Herein, we have developed an integrated photoanode for solar water splitting based on an ‘‘Earthabundant’’ Ni–Fe based electrocatalyst combined with a versatile multijunction Si-based photovoltaic device, designed in such ...
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Analysis of bio-anode performance through electrochemical impedance spectroscopy
Elsevier (2015-12)In this paper we studied the performance of bioanodes under different experimental conditions using polarization curves and impedance spectroscopy. We have identified that the large capacitances of up to 1 mF·cm− 2 for ...
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Application of Halide Perovskite Nanocrystals in Solar-Driven Photo(electro)Catalysis
Wiley (2022-03-15)Photo(electro)catalysis (PEC) is a promising strategy to conduct attractive solar-driven reactions such as CO2 reduction to form added-value products, H2 production, and organic substrates oxidation, taking advantage of ...
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Calculation of the Energy Band Diagram of a Photoelectrochemical Water Splitting Cell
American Chemical Society (2014-11)A physical model is presented for the semiconductor electrode of a photoelectrochemical cell. The model accounts for the potential drop in the Helmholtz layer and thus enables description of both band edge pinning and ...
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Carrier density and interfacial kinetics of mesoporous TiO2 in aqueous electrolyte determined by impedance spectroscopy
Elsevier (2012)Water splitting at a semiconductor/solution interface with the only input of sunlight to generate hydrogen is one of the most attractive strategies to produce and store chemical energy. In the present study we have ... -
Chromium doped copper vanadate photoanodes for water splitting
Elsevier (2017-07-15)Solar hydrogen obtained from photoelectrochemical water splitting offers a versatile approach towards the substitution of fossil fuels by decentralized and sustainable resources, like water and sun. In the present study ...
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Cobalt Hexacyanoferrate as a Selective and High Current Density Formate Oxidation Electrocatalyst
American Chemical Society (2020-09-28)Herein we report the selectivity, stability, and electrochemical characterization of cobalt hexacyanoferrate, the Co–Fe Prussian Blue derivative (CoFePB), as a formate/formic acid oxidation electrocatalyst in aqueous media. ...
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Cobalt Hexacyanoferrate on BiVO4 Photoanodes for Robust Water Splitting
(2017-11-01)The efficient integration of photoactive and catalytic materials is key to promoting photoelectrochemical water splitting as a sustainable energy technology built on solar power. Here, we report highly stable water splitting ...
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Competitive Photoelectrochemical Methanol and Water Oxidation with Hematite Electrodes
ACS Publications (2015-03-24)Photocatalytic water and methanol oxidation were studied at thin film hematite electrodes synthesized by atomic layer deposition (ALD). Systematic photoelectrochemical characterization along with O2 evolution measurements ...
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Controlled Carbon Nitride Growth on Surfaces for Hydrogen Evolution Electrodes
Wiley (2014-04-01)Efficient and low-cost electrocatalysts for the hydrogen evolution reaction are highly desired for future renewable energy systems. Described herein is the reduction of water to hydrogen using a metal-free carbon nitride ...
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Cooperative Catalytic Effect of ZrO2 and a-Fe2O3 Nanoparticles on BiVO4 Photoanodes for Enhanced Photoelectrochemical Water Splitting
Wiley (2016-09)Photoelectrochemical water splitting with metal oxide semiconductors offers a cost-competitive alternative for the generation of solar fuels. Most of the materials studied so far suffer from poor charge-transfer kinetics ...
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Direct Observation of the Chemical Transformations in BiVO4 Photoanodes upon Prolonged Light-Aging Treatments
Wiley (2022-03-11)Exposing BiVO4 photoanodes to light-aging treatments is known to produce a significant photocurrent enhancement. Until now, the interpretation given to this phenomenon is associated to the formation of oxygen vacancies and ...
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Easily manufactured TiO2 hollow fibers for quantum dot sensitized solar cells
Royal Society of Chemistry (2011)TiO2 hollow fibers with high surface area were manufactured by a simple synthesis method, using natural cellulose fibers as template. The effective light scattering properties of the hollow fibers, originating from their ...
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Effect of nanostructured electrode architecture and semiconductor deposition strategy on the photovoltaic performance of quantum dot sensitized solar cells
Elsevier (2012)Here we analyze the effect of two relevant aspects related to cell preparation on quantum dot sensitized solar cells (QDSCs) performance: the architecture of the TiO2 nanostructured electrode and the growth method of quantum ...
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Efficient and Stable Blue- and Red-Emitting Perovskite Nanocrystals through Defect Engineering: PbX2 Purification
American Chemical Society (2021-11-11)Current efforts to reduce the density of structural defects such as surface passivation, doping, and modified synthetic protocols have allowed us to grow high-quality perovskite nanocrystals (PNCs). However, the role of ...
