Possibly scalable solar hydrogen generation with quasi-artificial leaf approach

Abstract Any solar energy harvesting technology must provide a net positive energy balance, and artificial leaf concept provided a platform for solar water splitting (SWS) towards that. However, device stability, high photocurrent generation, and scalability are the major challenges. A wireless devi...

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Autores principales:	Kshirodra Kumar Patra, Bela D. Bhuskute, Chinnakonda S. Gopinath
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/165b2e174beb45098d5c0bb9c4053f68
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spelling	oai:doaj.org-article:165b2e174beb45098d5c0bb9c4053f682021-12-02T12:31:52ZPossibly scalable solar hydrogen generation with quasi-artificial leaf approach10.1038/s41598-017-06849-x2045-2322https://doaj.org/article/165b2e174beb45098d5c0bb9c4053f682017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06849-xhttps://doaj.org/toc/2045-2322Abstract Any solar energy harvesting technology must provide a net positive energy balance, and artificial leaf concept provided a platform for solar water splitting (SWS) towards that. However, device stability, high photocurrent generation, and scalability are the major challenges. A wireless device based on quasi-artificial leaf concept (QuAL), comprising Au on porous TiO2 electrode sensitized by PbS and CdS quantum dots (QD), was demonstrated to show sustainable solar hydrogen (490 ± 25 µmol/h (corresponds to 12 ml H2 h−1) from ~2 mg of photoanode material coated over 1 cm2 area with aqueous hole (S2−/SO3 2−) scavenger. A linear extrapolation of the above results could lead to hydrogen production of 6 L/h.g over an area of ~23 × 23 cm2. Under one sun conditions, 4.3 mA/cm2 photocurrent generation, 5.6% power conversion efficiency, and spontaneous H2 generation were observed at no applied potential (see S1). A direct coupling of all components within themselves enhances the light absorption in the entire visible and NIR region and charge utilization. Thin film approach, as in DSSC, combined with porous titania enables networking of all the components of the device, and efficiently converts solar to chemical energy in a sustainable manner.Kshirodra Kumar PatraBela D. BhuskuteChinnakonda S. GopinathNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kshirodra Kumar Patra Bela D. Bhuskute Chinnakonda S. Gopinath Possibly scalable solar hydrogen generation with quasi-artificial leaf approach
description	Abstract Any solar energy harvesting technology must provide a net positive energy balance, and artificial leaf concept provided a platform for solar water splitting (SWS) towards that. However, device stability, high photocurrent generation, and scalability are the major challenges. A wireless device based on quasi-artificial leaf concept (QuAL), comprising Au on porous TiO2 electrode sensitized by PbS and CdS quantum dots (QD), was demonstrated to show sustainable solar hydrogen (490 ± 25 µmol/h (corresponds to 12 ml H2 h−1) from ~2 mg of photoanode material coated over 1 cm2 area with aqueous hole (S2−/SO3 2−) scavenger. A linear extrapolation of the above results could lead to hydrogen production of 6 L/h.g over an area of ~23 × 23 cm2. Under one sun conditions, 4.3 mA/cm2 photocurrent generation, 5.6% power conversion efficiency, and spontaneous H2 generation were observed at no applied potential (see S1). A direct coupling of all components within themselves enhances the light absorption in the entire visible and NIR region and charge utilization. Thin film approach, as in DSSC, combined with porous titania enables networking of all the components of the device, and efficiently converts solar to chemical energy in a sustainable manner.
format	article
author	Kshirodra Kumar Patra Bela D. Bhuskute Chinnakonda S. Gopinath
author_facet	Kshirodra Kumar Patra Bela D. Bhuskute Chinnakonda S. Gopinath
author_sort	Kshirodra Kumar Patra
title	Possibly scalable solar hydrogen generation with quasi-artificial leaf approach
title_short	Possibly scalable solar hydrogen generation with quasi-artificial leaf approach
title_full	Possibly scalable solar hydrogen generation with quasi-artificial leaf approach
title_fullStr	Possibly scalable solar hydrogen generation with quasi-artificial leaf approach
title_full_unstemmed	Possibly scalable solar hydrogen generation with quasi-artificial leaf approach
title_sort	possibly scalable solar hydrogen generation with quasi-artificial leaf approach
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/165b2e174beb45098d5c0bb9c4053f68
work_keys_str_mv	AT kshirodrakumarpatra possiblyscalablesolarhydrogengenerationwithquasiartificialleafapproach AT beladbhuskute possiblyscalablesolarhydrogengenerationwithquasiartificialleafapproach AT chinnakondasgopinath possiblyscalablesolarhydrogengenerationwithquasiartificialleafapproach
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Possibly scalable solar hydrogen generation with quasi-artificial leaf approach

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