scholarly journals A robust ALD-protected silicon-based hybrid photoelectrode for hydrogen evolution under aqueous conditions

2019 ◽  
Vol 10 (16) ◽  
pp. 4469-4475 ◽  
Author(s):  
Soundarrajan Chandrasekaran ◽  
Nicolas Kaeffer ◽  
Laurent Cagnon ◽  
Dmitry Aldakov ◽  
Jennifer Fize ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hybrid Systems ◽  
Hydrogen Evolution ◽  
Inorganic Materials ◽  
Promising Solution ◽  
Aqueous Conditions ◽  
Photoelectrochemical Hydrogen Production ◽  
Molecular Catalysts ◽  
Silicon Based

Hybrid systems combining molecular catalysts with inorganic materials is a promising solution towards cheap yet efficient and stable photoelectrochemical hydrogen production.

Efficient photoelectrochemical hydrogen production over CuInS2 photocathodes modified with amorphous Ni-MoSx operating in a neutral electrolyte

2020 ◽  
Vol 4 (4) ◽  
pp. 1607-1611
Author(s):  
Jiao Zhao ◽  
Tsutomu Minegishi ◽  
Guijun Ma ◽  
Miao Zhong ◽  
Takashi Hisatomi ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Neutral Electrolyte ◽  
Photoelectrochemical Hydrogen Production

Ni-MoSx presents better activity than Pt as hydrogen evolution catalyst on CuInS2 surface, likely due to the favourable interface.

Drastically enhanced hydrogen evolution activity by 2D to 3D structural transition in anion-engineered molybdenum disulfide thin films for efficient Si-based water splitting photocathodes

2017 ◽  
Vol 5 (30) ◽  
pp. 15534-15542 ◽  
Author(s):  
Ki Chang Kwon ◽  
Seokhoon Choi ◽  
Joohee Lee ◽  
Kootak Hong ◽  
Woonbae Sohn ◽  
...  
Keyword(s):  
Thin Films ◽  
Hydrogen Production ◽  
Molybdenum Disulfide ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Structural Transition ◽  
Molybdenum Phosphide ◽  
Photoelectrochemical Hydrogen Production ◽  
2D To 3D

Efficient photoelectrochemical hydrogen production is demonstrated by sulphur-doped molybdenum phosphide/p-Si heterojunctions.

Light-guided electrodeposition of non-noble catalyst patterns for photoelectrochemical hydrogen evolution

2015 ◽  
Vol 8 (12) ◽  
pp. 3654-3662 ◽  
Author(s):  
Sung Yul Lim ◽  
Yang-Rae Kim ◽  
Kyungyeon Ha ◽  
Jong-Kwon Lee ◽  
Jae Gyeong Lee ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Electrodeposition Technique ◽  
Photoelectrochemical Hydrogen Production

For photoelectrochemical hydrogen production, a non-noble catalyst is directly patterned onto the photocathode using a light-guided electrodeposition technique.

scholarly journals Photoelectrochemical Hydrogen Production in Alkaline Solutions Using Cu2O Coated with Earth-Abundant Hydrogen Evolution Catalysts

2014 ◽  
Vol 127 (2) ◽  
pp. 674-677 ◽  
Author(s):  
Carlos G. Morales-Guio ◽  
Laurent Liardet ◽  
Matthew T. Mayer ◽  
S. David Tilley ◽  
Michael Grätzel ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Alkaline Solutions ◽  
Earth Abundant ◽  
Photoelectrochemical Hydrogen Production

RF Sputter Deposition of Indium Oxide / Indium Iron Oxide Thin Films for Photoelectrochemical Hydrogen Production

2009 ◽  
Vol 1171 ◽  
Author(s):  
William B Ingler ◽  
Abbasali Naseem
Keyword(s):  
Solar Cells ◽  
Iron Oxide ◽  
Hydrogen Production ◽  
Amorphous Silicon ◽  
Indium Oxide ◽  
Sputter Deposition ◽  
Photoelectrochemical Cells ◽  
Photoelectrochemical Hydrogen Production ◽  
Silicon Based ◽  
Immersion Type

AbstractThis project focuses on using indium oxide and indium iron oxide as an alloy to make a protective thin film (transparent, conductive, and corrosion resistant or TCCR) for amorphous silicon based solar cells, which are used in immersion-type photoelectrochemical cells for hydrogen production. From the work completed, the results indicate that samples made at 250 °C with 30 Watt of indium and 100 Watt of indium iron oxide, and a sputter deposition time of ninety minutes produced optimal results when deposited directly on single junction amorphous silicon solar cells. At 0.65 Volts, the best sample displays a maximum current density of 21.4 mA/cm2.

Wafer-scale transferable molybdenum disulfide thin-film catalysts for photoelectrochemical hydrogen production

2016 ◽  
Vol 9 (7) ◽  
pp. 2240-2248 ◽  
Author(s):  
Ki Chang Kwon ◽  
Seokhoon Choi ◽  
Kootak Hong ◽  
Cheon Woo Moon ◽  
Young-Seok Shim ◽  
...  
Keyword(s):  
Thin Film ◽  
Hydrogen Production ◽  
Molybdenum Disulfide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Hydrogen ◽  
Wafer Scale ◽  
Thin Film Catalysts ◽  
Photoelectrochemical Hydrogen Production

Wafer-scale n-MoS2/p-Si photocathodes with high hydrogen evolution reaction activities are demonstrated.

Indium oxide/indium iron oxide thin films for photoelectrochemical hydrogen production with a-silicon solar cells

2010 ◽  
Vol 25 (1) ◽  
pp. 25-31 ◽  
Author(s):  
William B. Ingler ◽  
Abbasali Naseem
Keyword(s):  
Solar Cells ◽  
Iron Oxide ◽  
Hydrogen Production ◽  
Amorphous Silicon ◽  
Indium Oxide ◽  
Photoelectrochemical Cells ◽  
Silicon Solar Cells ◽  
Photoelectrochemical Hydrogen Production ◽  
Silicon Based ◽  
Immersion Type

In this paper we focus on indium oxide and indium iron oxide as an alloy to fabricate a protective thin film (transparent, conductive, and corrosion resistant; TCCR) for amorphous silicon-based solar cells, which can be used in immersion-type photoelectrochemical cells for hydrogen production. From the work completed, the results indicate that samples made at 250 °C with indium and indium iron oxide targets powered at 30 and 100 W, respectively, and a sputter deposition time of 90 min produced optimal results when deposited directly on single-junction amorphous silicon solar cells. At 0.65 V (versus SCE), the best sample conditions display a maximum current density of 21.4 μA/cm2.

Semiconductor Photocatalysts for Solar-to-Hydrogen Energy Conversion: Recent Advances of CdS

2020 ◽  
Vol 16 ◽  
Author(s):  
Yuxue Wei ◽  
Honglin Qin ◽  
Jinxin Deng ◽  
Xiaomeng Cheng ◽  
Mengdie Cai ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Noble Metals ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Theoretical Design ◽  
Recent Developments

Introduction: Solar-driven photocatalytic hydrogen production from water splitting is one of the most promising solutions to satisfy the increasing demands of a rapidly developing society. CdS has emerged as a representative semiconductor photocatalyst due to its suitable band gap and band position. However, the poor stability and rapid charge recombination of CdS restrict its application for hydrogen production. The strategy of using a cocatalyst is typically recognized as an effective approach for improving the activity, stability, and selectivity of photocatalysts. In this review, recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation are summarized. In particular, the factors affecting the photocatalytic performance and new cocatalyst design, as well as the general classification of cocatalysts, are discussed, which includes a single cocatalyst containing noble-metal cocatalysts, non-noble metals, metal-complex cocatalysts, metal-free cocatalysts, and multi-cocatalysts. Finally, future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are described. Background: Photocatalytic hydrogen evolution from water splitting using photocatalyst semiconductors is one of the most promising solutions to satisfy the increasing demands of a rapidly developing society. CdS has emerged as a representative semiconductor photocatalyst due to its suitable band gap and band position. However, the poor stability and rapid charge recombination of CdS restrict its application for hydrogen production. The strategy of using a cocatalyst is typically recognized as an effective approach for improving the activity, stability, and selectivity of photocatalysts. Methods: This review summarizes the recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation. Results: Recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation are summarized. The factors affecting the photocatalytic performance and new cocatalyst design, as well as the general classification of cocatalysts, are discussed, which includes a single cocatalyst containing noble-metal cocatalysts, non-noble metals, metal-complex cocatalysts, metal-free cocatalysts, and multi-cocatalysts. Finally, future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are described. Conclusion: The state-of-the-art CdS for producing hydrogen from photocatalytic water splitting under visible light is discussed. The future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are also described.

scholarly journals Zeolite addition to improve biohydrogen production from dark fermentation of C5/C6-sugars and Sargassum sp. biomass

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
R. M. Silva ◽  
A. A. Abreu ◽  
A. F. Salvador ◽  
M. M. Alves ◽  
I. C. Neves ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Anaerobic Bacteria ◽  
Dark Fermentation ◽  
Inorganic Materials ◽  
Biohydrogen Production ◽  
High Rate ◽  
Continuous Reactor ◽  
Organic Loading Rate ◽  
Fermentation Products ◽  
Zeolite Type

AbstractThermophilic biohydrogen production by dark fermentation from a mixture (1:1) of C5 (arabinose) and C6 (glucose) sugars, present in lignocellulosic hydrolysates, and from Sargassum sp. biomass, is studied in this work in batch assays and also in a continuous reactor experiment. Pursuing the interest of studying interactions between inorganic materials (adsorbents, conductive and others) and anaerobic bacteria, the biological processes were amended with variable amounts of a zeolite type-13X in the range of zeolite/inoculum (in VS) ratios (Z/I) of 0.065–0.26 g g−1. In the batch assays, the presence of the zeolite was beneficial to increase the hydrogen titer by 15–21% with C5 and C6-sugars as compared to the control, and an increase of 27% was observed in the batch fermentation of Sargassum sp. Hydrogen yields also increased by 10–26% with sugars in the presence of the zeolite. The rate of hydrogen production increased linearly with the Z/I ratios in the experiments with C5 and C6-sugars. In the batch assay with Sargassum sp., there was an optimum value of Z/I of 0.13 g g−1 where the H2 production rate observed was the highest, although all values were in a narrow range between 3.21 and 4.19 mmol L−1 day−1. The positive effect of the zeolite was also observed in a continuous high-rate reactor fed with C5 and C6-sugars. The increase of the organic loading rate (OLR) from 8.8 to 17.6 kg m−3 day−1 of COD led to lower hydrogen production rates but, upon zeolite addition (0.26 g g−1 VS inoculum), the hydrogen production increased significantly from 143 to 413 mL L−1 day−1. Interestingly, the presence of zeolite in the continuous operation had a remarkable impact in the microbial community and in the profile of fermentation products. The effect of zeolite could be related to several properties, including the porous structure and the associated surface area available for bacterial adhesion, potential release of trace elements, ion-exchanger capacity or ability to adsorb different compounds (i.e. protons). The observations opens novel perspectives and will stimulate further research not only in biohydrogen production, but broadly in the field of interactions between bacteria and inorganic materials.

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