scholarly journals Photoelectrochemical Hydrogen Production by Screen-Printed Copper Oxide Electrodes

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2942
Author(s):  
Angela Gondolini ◽  
Nicola Sangiorgi ◽  
Alex Sangiorgi ◽  
Alessandra Sanson
Keyword(s):  
Hydrogen Production ◽  
Screen Printing ◽  
Photocurrent Density ◽  
Photoelectrochemical Cells ◽  
Reaction Conditions ◽  
Nano Powder ◽  
Oxide Electrodes ◽  
Acid Reaction ◽  
Photoelectrochemical Hydrogen Production ◽  
First Time

In this work, copper oxides-based photocathodes for photoelectrochemical cells (PEC) were produced for the first time by screen printing. A total 7 × 10−3 g/m2 glycerine trioleate was found as optimum deflocculant amount to assure stable and homogeneous inks, based on CuO nano-powder. The inks were formulated considering different binder amounts and deposited producing films with homogenous thickness, microstructure, and roughness. The as-produced films were thermally treated to obtain Cu2O- and Cu2O/CuO-based electrodes. The increased porosity obtained by adding higher amounts of binder in the ink positively affected the electron transfer from the surface of the electrode to the electrolyte, thus increasing the corresponding photocurrent values. Moreover, the Cu2O/CuO system showed a higher charge carrier and photocurrent density than the Cu2O-based one. The mixed Cu2O/CuO films allowed the most significant hydrogen production, especially in slightly acid reaction conditions.

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.

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.

scholarly journals Moisture Stable Soot Coated Methylammonium Lead Iodide Perovskite Photoelectrodes for Hydrogen Production in Water

2021 ◽  
pp. 141-148
Author(s):  
Udit Tiwari ◽  
Sahab Dass
Keyword(s):  
Hydrogen Production ◽  
Saturated Calomel Electrode ◽  
Cost Effective ◽  
Photocurrent Density ◽  
Lead Iodide ◽  
Hydrophobic Coating ◽  
Photogenerated Electrons ◽  
Quantum Leap ◽  
Efficient Route ◽  
Photoelectrochemical Hydrogen Production

AbstractMetal halide perovskites have triggered a quantum leap in the photovoltaic technology marked by a humongous improvement in the device performance in a matter of just a few years. Despite their promising optoelectronic properties, their use in the photovoltaic sector remains restricted due to their inherent instability towards moisture. Here, we report a simple, cost-effective and highly efficient protection strategy that enables their use as photoelectrodes for photoelectrochemical hydrogen production while being immersed in water. A uniform coating of candle soot and silica is developed as an efficient hydrophobic coating that protects the perovskite from water while allowing the photogenerated electrons to reach the counter electrode. We achieve remarkable stability with photocurrent density above 1.5 mA cm−2 at 1 V versus saturated calomel electrode (SCE) for ~1 h under constant illumination. These results indicate an efficient route for the development of stable perovskite photoelectrodes for solar water splitting.

scholarly journals A Sustainable Improvement of ω-Bromoalkylphosphonates Synthesis to Access Novel KuQuinones

Organics ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 107-117
Author(s):  
Mattia Forchetta ◽  
Valeria Conte ◽  
Giulia Fiorani ◽  
Pierluca Galloni ◽  
Federica Sabuzi
Keyword(s):  
Metal Oxides ◽  
Phosphonic Acid ◽  
Organic Molecules ◽  
Building Blocks ◽  
Reaction Conditions ◽  
Phosphonic Acids ◽  
Sustainable Improvement ◽  
Phosphonate Esters ◽  
First Time ◽  
Complex Organic

Owing to the attractiveness of organic phosphonic acids and esters in the pharmacological field and in the functionalization of conductive metal-oxides, the research of effective synthetic protocols is pivotal. Among the others, ω-bromoalkylphosphonates are gaining particular attention because they are useful building blocks for the tailored functionalization of complex organic molecules. Hence, in this work, the optimization of Michaelis–Arbuzov reaction conditions for ω-bromoalkylphosphonates has been performed, to improve process sustainability while maintaining good yields. Synthesized ω-bromoalkylphosphonates have been successfully adopted for the synthesis of new KuQuinone phosphonate esters and, by hydrolysis, phosphonic acid KuQuinone derivatives have been obtained for the first time. Considering the high affinity with metal-oxides, KuQuinones bearing phosphonic acid terminal groups are promising candidates for biomedical and photo(electro)chemical applications.

Sulfonyl Radical Triggered Selective Iodosulfonylation and Bicycli-zations of 1,6-Dienes

2021 ◽  
Author(s):  
Shi-Ping Wu ◽  
Dong-Kai Wang ◽  
Qing-Qing Kang ◽  
Guo-Ping Ge ◽  
Hongxing Zheng ◽  
...  
Keyword(s):  
Functional Group ◽  
High Selectivity ◽  
Reaction Conditions ◽  
First Time

A novel sulfonyl radical triggered selective iodosulfonylation and bicyclizations of 1,6-dienes has been described for the first time. High selectivity and efficiency, mild reaction conditions, excellent functional group compatibility, and...

Photoelectrochemical Hydrogen Production Using Novel Heteroatom-Doped Carbon Under Solar Simulated Radiation

2016 ◽  
Vol 52 (1) ◽  
pp. 378-383
Author(s):  
Rajesh Sharma ◽  
Keith Arnoult ◽  
Sunil Kumar Ramasahayam ◽  
Saad Azam ◽  
Zachary Hicks ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Photoelectrochemical Hydrogen Production

Surface activated carbon nitride nanosheets with optimized electro-optical properties for highly efficient photocatalytic hydrogen production

2016 ◽  
Vol 4 (7) ◽  
pp. 2445-2452 ◽  
Author(s):  
Mohammad Ziaur Rahman ◽  
Jingrun Ran ◽  
Youhong Tang ◽  
Mietek Jaroniec ◽  
Shi Zhang Qiao
Keyword(s):  
Optical Properties ◽  
Activated Carbon ◽  
Hydrogen Production ◽  
Carbon Nitride ◽  
Surface Activation ◽  
Step Method ◽  
Highly Efficient ◽  
Thin Carbon ◽  
Carbon Nitride Nanosheets ◽  
First Time

We introduce a three-step method (co-polymerization, surface activation and exfoliation) for the first time to synthesize sub-nanometer-thin carbon nitride nanosheets as highly efficient hydrogen evolution photocatalysts.

Synthesis of Pt@NH2-MIL-125(Ti) as a photocathode material for photoelectrochemical hydrogen production

RSC Advances ◽  
2013 ◽  
Vol 3 (43) ◽  
pp. 19820 ◽  
Author(s):  
Chuantao Hou ◽  
Qin Xu ◽  
Yanjuan Wang ◽  
Xiaoya Hu
Keyword(s):  
Hydrogen Production ◽  
Photoelectrochemical Hydrogen Production
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