ChemCatChem · 2018 · 23 citations · 46 references
Natural SciencesChemistryMaterials ScienceElectrochemistryInorganic ChemistryPhotosynthesisElectrochemical CellsElectrochemical Energy ConversionElectrochemical Energy StorageLight HarvestingNanostructured Energy MaterialsPhotosynthetic Energy ConversionArtificial PhotosynthesisElectron TransferIrradiation EffectsPhotocatalysis By Metal Oxide NanomaterialsPhotocatalytic Carbon Dioxide ReductionPhotoelectrochemical CellsSaturated Calomel ElectrodeSolar Energy Conversion
Abstract The artificial photosynthesis (APS) of carbon‐based chemicals from CO 2 and water is a promising strategy for solar energy conversion and storage. A new Mn‐doped CdS and CdSeTe quantum dot cosensitized TiO 2 photocathode was fabricated and applied to CO 2 reduction in an APS cell with modified BiVO 4 as the counter electrode. The 3 D structure of the photocathode constructed by Mn:CdS and CdSeTe quantum dots showed a high efficiency for light harvesting and electron transfer in this system to yield methanol at a rate of 90 μ m h −1 cm −2 at −0.9 V versus the saturated calomel electrode under 200 mW cm −2 irradiation. Methanol could also be produced by a two‐electrode system under the same conditions. 13 CO 2 ‐labeling experiments were performed to show that the carbon‐based products are derived from CO 2 . A mechanism for CO 2 reduction in this new APS cell was proposed based on the experimental results. In addition, headspace GC was used to quantify the products by an external standard method.
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All-solid-state Z-scheme in CdS–Au–TiO2 three-component nanojunction system
Hiroaki Tada, Tomohiro Mitsui, Tomokazu Kiyonaga et al. · Nature Materials · 2006 · 1.5K citations