TY - JOUR
T1 - A Beehive Inspired Hydrogen Photocatalytic Device Integrating a Carbo-Benzene Triptych Material for Efficient Solar Photo-Reduction of Seawater
AU - Cure, Jérémy
AU - Cocq, Kévin
AU - Nicollet, Andréa
AU - Tan, Kui
AU - Hungria, Teresa
AU - Assie-Souleille, Sandrine
AU - Vivies, Séverine
AU - Salvagnac, Ludovic
AU - Quevedo-Lopez, Manuel
AU - Maraval, Valérie
AU - Chauvin, Remi
AU - Estève, Alain
AU - Rossi, Carole
PY - 2020/1/1
Y1 - 2020/1/1
N2 - © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The dream to produce green, clean, and sustainable hydrogen from earth-abundant and free resources such as seawater and sunlight is highly motivating because of the interest for desirable economical and societal applications in energy. However, it remains challenging to develop an efficient and unassisted photocatalytic device to split seawater molecules with just sunlight without any external bias. For the first time, a such novel hierarchical material has been developed, based on thin film technology that integrates TiO2 semiconductor layers, embedded gold nanoparticles, and a photosensitive carbo-benzene layer. The design of the triptych device placing the photocatalyst in be-to-be increases the photoactive surface area by a factor 2. Its stability (>120 successive hours of hydrogen production and >5 days in a day/night representative alternation) and efficiency (Soler-to-Hydrogen 0.06%) are measured in NaCl-salted water. The chloride ions act as hole scavengers and induce an increase of pH increasing in turn the sun-driven hydrogen production rate.
AB - © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The dream to produce green, clean, and sustainable hydrogen from earth-abundant and free resources such as seawater and sunlight is highly motivating because of the interest for desirable economical and societal applications in energy. However, it remains challenging to develop an efficient and unassisted photocatalytic device to split seawater molecules with just sunlight without any external bias. For the first time, a such novel hierarchical material has been developed, based on thin film technology that integrates TiO2 semiconductor layers, embedded gold nanoparticles, and a photosensitive carbo-benzene layer. The design of the triptych device placing the photocatalyst in be-to-be increases the photoactive surface area by a factor 2. Its stability (>120 successive hours of hydrogen production and >5 days in a day/night representative alternation) and efficiency (Soler-to-Hydrogen 0.06%) are measured in NaCl-salted water. The chloride ions act as hole scavengers and induce an increase of pH increasing in turn the sun-driven hydrogen production rate.
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U2 - 10.1002/adsu.202000121
DO - 10.1002/adsu.202000121
M3 - Article
JO - Advanced Sustainable Systems
JF - Advanced Sustainable Systems
SN - 2366-7486
ER -