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Harnessing Infrared Photons for Photoelectrochemical Hydrogen Generation. A PbS Quantum Dot Based "Quasi-Artificial Leaf"

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Harnessing Infrared Photons for Photoelectrochemical Hydrogen Generation. A PbS Quantum Dot Based "Quasi-Artificial Leaf"

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dc.contributor.author Trevisan, Roberto es_ES
dc.contributor.author Rodenas, Pau es_ES
dc.contributor.author González-Pedro, Victoria es_ES
dc.contributor.author Sima, Cornelia es_ES
dc.contributor.author Sánchez, Rafael S. es_ES
dc.contributor.author Barea, Eva M. es_ES
dc.contributor.author Mora-Sero, Iván es_ES
dc.contributor.author Fabregat-Santiago, Francisco es_ES
dc.contributor.author Gimenez, Sixto es_ES
dc.date.accessioned 2017-05-18T06:57:13Z
dc.date.issued 2013-01-03
dc.identifier.issn 1948-7185
dc.identifier.uri http://hdl.handle.net/10251/81328
dc.description.abstract [EN] Hydrogen generation by using quantum dot (QD) based heterostructures has emerged as a promising strategy to develop artificial photosynthesis devices. In the present study, we sensitize mesoporous TiO2 electrodes with in-situ-deposited PbS/CdS QDs, aiming at harvesting light in both the visible and the near-infrared for hydrogen generation. This heterostructure exhibits a remarkable photocurrent of 6 mA.cm(-2), leading to 60 mL.cm(-2).day(-1) hydrogen generation. Most importantly, confirmation of the contribution of infrared photons to H-2 generation was provided by the incident-photon-to-current-efficiency (IPCE), and the integrated current was in excellent agreement with that obtained through cyclic voltammetry. The main electronic processes (accumulation, transport, and recombination) were identified by impedance spectroscopy, which appears as a simple and reliable methodology to evaluate the limiting factors of these photoelectrodes. On the basis of this TiO2/PbS/CdS heterostructrure, a "quasi-artificial leaf' has been developed, which has proven to produce hydrogen under simulated solar illumination at (4.30 +/- 0.25) mL.cm(-2).day(-1). es_ES
dc.description.sponsorship We acknowledge support by projects from Ministerio de Economia y Competitividad (MINECO) of Spain (Consolider HOPE CSD2007-00007, MAT2010-19827), Generalitat Valenciana (PROMETEO/2009/058 and Project ISIC/2012/008 "Institute of Nanotechnologies for Clean Energies"), and Fundacio Bancaixa (P1.1B2011-50). S.G. acknowledges support by MINECO of Spain under the Ramon y Cajal programme. The SCIC of the University Jaume I de Castello is also acknowledged for the gas analysis measurements. C.S. acknowledges the POSDRU/89/1.5/S/58852 Project "Postdoctoral programme for training scientific researchers", co-financed by the European Social Fund within the Sectorial Operational Program Human Resources Development 2007-2013. We want to acknowledge Prof. J. Bisquert for the fruitful discussions related to this manuscript.
dc.language Inglés es_ES
dc.publisher American Chemical Society es_ES
dc.relation MINECO/HOPE CSD2007-00007 es_ES
dc.relation GV/PROMETEO 2009/125 es_ES
dc.relation Fundació Bancaixa/P1.1B2011-50 es_ES
dc.relation MINECO/MAT2010-19827
dc.relation GV/ISIC/2012/008
dc.relation POSDRU/89/1.5/S/58852
dc.relation.ispartof Journal of Physical Chemistry Letters es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Sensitized solar cells es_ES
dc.subject Chemical capacitance es_ES
dc.subject Ligand passivation es_ES
dc.subject Energy conversion es_ES
dc.subject Water es_ES
dc.subject Arrays es_ES
dc.subject Semiconductors es_ES
dc.subject Nanostructure es_ES
dc.subject Electrodes es_ES
dc.subject Efficiency es_ES
dc.subject.classification QUIMICA ANALITICA es_ES
dc.title Harnessing Infrared Photons for Photoelectrochemical Hydrogen Generation. A PbS Quantum Dot Based "Quasi-Artificial Leaf" es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1021/jz301890m
dc.rights.accessRights Abierto es_ES
dc.description.bibliographicCitation Trevisan, R.; Rodenas, P.; González-Pedro, V.; Sima, C.; Sánchez, RS.; Barea, EM.; Mora-Sero, I.... (2013). Harnessing Infrared Photons for Photoelectrochemical Hydrogen Generation. A PbS Quantum Dot Based "Quasi-Artificial Leaf". Journal of Physical Chemistry Letters. 4(1):141-146. doi:10.1021/jz301890m es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1021/jz301890m es_ES
dc.description.upvformatpinicio 141 es_ES
dc.description.upvformatpfin 146 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 4 es_ES
dc.description.issue 1 es_ES
dc.relation.senia 288238 es_ES
dc.identifier.pmid 26291226
dc.contributor.funder Ministerio de Economía y Competitividad
dc.contributor.funder Generalitat Valenciana
dc.contributor.funder Fundación Bancaja


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