Enhanced hydrogen production over incorporated Cu and Ni into titania photocatalyst in glycerol-based photoelectrochemical cell: Effect of total metal loading and calcination temperature

Bashiri, Robabeh; Mohamed, Norani Muti; Kait, Chong Fai; Sufian, Suriati; Khatani, Mehboob

doi:10.1016/j.ijhydene.2017.01.225

Cited by 44 publications

(18 citation statements)

References 69 publications

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“…Details description of the procedure for measuring the photocurrent density versus applied potential (I−V) and electrochemical impedance spectroscopy (EIS) can be found in our previous work. 26,27 Photoelectrocatalytic Hydrogen Production. Figure 2 depicts the schematic PEC-DSSC setup used in this photoelectrocatalytic hydrogen production study.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Experimental and DFT Insights on Microflower g-C₃N₄/BiVO₄ Photocatalyst for Enhanced Photoelectrochemical Hydrogen Generation from Lake Water

Samsudin

Ullah

Bashiri

et al. 2020

ACS Sustainable Chem. Eng.

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Herein, an experimental and density functional theory (DFT) analysis of the composite g-C 3 N 4 /BiVO 4 microflower photocatalysts are comprehensively discussed. A remarkable photoelectrocatalytic solar hydrogen production has been observed for the as-developed photocatalysts, with different loading amounts of g-C 3 N 4 (0.1, 0.4, 0.8, and 1.2 wt %), using lake water without the addition of sacrificial reagents. The 0.8 wt % g-C 3 N 4 /BiVO 4 microflower photocatalyst evinced remarkable photoelectrocatalytic activity of 21.4 mmol/h of hydrogen generated in comparison to other samples with an AQE of 4.27% at 420 nm. In addition, the photocurrent density of 0.8 wt % g-C 3 N 4 /BiVO 4 microflower was 2fold higher than that of pure BiVO 4 . This was attributed to its better crystallinity and optical properties, confirmed from XRD and DR-UV−vis analysis. The DFT analysis further corroborated that the efficient photocharge carrier separation and limited photocharge carrier recombination corresponded to the synergistic effect of the band offset and built-in electric field.

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Section: ■ Materials and Methodsmentioning

confidence: 99%

“…A 500 W halogen lamp and 0.5 M Na 2 SO 4 solution were employed during the measurement. Details description of the procedure for measuring the photocurrent density versus applied potential ( I – V ) and electrochemical impedance spectroscopy (EIS) can be found in our previous work. , …”

Section: Methodsmentioning

confidence: 99%

Experimental and DFT Insights on Microflower g-C₃N₄/BiVO₄ Photocatalyst for Enhanced Photoelectrochemical Hydrogen Generation from Lake Water

Samsudin

Ullah

Bashiri

et al. 2020

ACS Sustainable Chem. Eng.

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“…There have been a few reports on two-compartment PEC systems for H 2 evolution, which utilize a simple organic substrate such as glucose − or glycerol − instead of water oxidation. However, most of those PEC systems require an additional external energy input in the form of an applied bias voltage, ,− employ a tandem light absorber configuration, , or exhibit low efficiencies and product selectivities. − ,, Furthermore, a two-compartment arrangement may be impractical for large-scale applications.…”

Section: Thin Film Technologiesmentioning

confidence: 99%

Solar Panel Technologies for Light-to-Chemical Conversion

et al. 2022

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Metrics & MoreArticle Recommendations CONSPECTUS:The sustainable synthesis of fuels and chemicals is key to attaining a carbon-neutral economy. This can be achieved by mimicking the light-harvesting and catalytic processes occurring in plants. Solar fuel production is commonly performed via established approaches, including photovoltaic−electrochemical (PV−EC), photoelectrochemical (PEC), and photocatalytic (PC) systems. A recent shift saw these systems evolve into integrated, compact panels, which suit practical applications through their simplicity, scalability, and ease of operation. This advance has resulted in a suite of apparently similar technologies, including the so-called artificial leaves and PC sheets. In this Account, we compare these different thin film technologies based on their micro-and nanostructure (i.e., layered vs particulate), operation principle (products occurring on the same or different sides of the panel), and product/reaction scope (overall water splitting and CO 2 reduction, or organics, biomass, and waste conversion).For this purpose, we give an overview of developments established over the past few years in our laboratory. Two light absorbers are generally required to overcome the thermodynamic challenges of coupling water oxidation to proton or CO 2 reduction with good efficiency. Hence, tandem artificial leaves combine a lead halide perovskite photocathode with a BiVO 4 photoanode to generate syngas (a mixture of H 2 and CO), whereas PC sheets involve metal-ion-doped SrTiO 3 and BiVO 4 particles for selective formate synthesis from CO 2 and water. On the other hand, only a single light absorber is needed for coupling H 2 evolution to organics oxidation in the thermodynamically less demanding photoreforming process. This can be performed by immobilized carbon nitride (CN x ) in the case of PC sheets or by a single perovskite light absorber in the case of PEC reforming leaves. Such systems can be integrated with a range of inorganic, molecular, and biological catalysts, including metal alloys, molecular cobalt complexes, enzymes, and bacteria, with low overpotentials and high catalytic activities toward selective product formation. This wide reaction scope introduces new challenges toward quantifying and comparing the performance of different systems. To this end, we propose new metrics to evaluate the performance of solar fuel panels based on the areal product rates and commercial product value. We further explore the key opportunities and challenges facing the commercialization of thin film technologies for solar fuels research, including performance losses over larger areas and catalyst/device recyclability. Finally, we identify emerging applications beyond fuels, where such light-driven panels can make a difference, including the waste management, chemical synthesis, and pharmaceutical industries. In the long term, these aspects may facilitate a transition toward a light-driven circular economy.

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“…They could observe the production of 694.84 µmol H 2 after 2 h when measuring in KOH with 10% v/v glycerol and 5 mol% Cu-Ni/TiO 2 as photoanode upon 1 sun illumination (AM 1.5G, 100 mW cm −2 , λ > 360 nm). [442] Figure 29. A) Scheme of a water splitting photoelectrochemical cell.…”

Section: Photoelectrochemical Oxidation and Hydrogen Productionmentioning

confidence: 99%

Progress and Perspectives in Photo‐ and Electrochemical‐Oxidation of Biomass for Sustainable Chemicals and Hydrogen Production

Luo

Barrio

Sunny

et al. 2021

Advanced Energy Materials

284

197

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Elevated concentrations of atmospheric greenhouse gases (GHGs), particularly carbon dioxide (CO 2 ), have affected the global environment, causing climate deviations and threatening the biodiversity. [1,2] Deep-cutting solutions and new technologies are thus imperative to repay the carbon debt. [3] Hydrogen (H 2 ) is an ideal fuel to enable a successful transition to a global zero emission economy: With a gravimetric energy density more than double that of conventional fuels like diesel, gasoline, and natural gas it is a lightweight energy carrier which can be converted to electricity and water via fuel cells and thus holds great promise to cut emissions of the transport and energy sectors to zero. Furthermore, it is an energy dense chemical which is already used in the chemical industry (i.e., ammonia via the Haber-Bosch process) and steel manufacturing. However, these industries currently use brown (made from coal via gasification and subsequent water gas shift reaction) and gray (made by steam methane reforming) hydrogen which both have significant CO 2 footprints. Thus, synthesizing green (meaning renewable) hydrogen cost-effectively is a solution which could green such industries and the transport sector and simultaneously meet our growing demands for viable energy storage solutions. However, switching from fossilfuels to a hydrogen economy requires efficient technologies that permit clean, sustainable and cost-effective production, storage, and utilization of H 2 . [4][5][6] Water electrolysis is a clean technology for green H 2 production, where water is split into H 2 at the cathode while O 2 is generated at the anode. Thermodynamically, the energy input required for this reaction equals an applied voltage of 1.23 V but in practice >1.8 V is commonly applied due to the sluggish kinetics of the oxygen evolution reaction (OER). The kinetics of the OER are complex. In addition to the thermodynamic potential of 1.23 V, even the best OER catalysts to date show significant overpotentials (0.35-0.4 V) which is due to suboptimal scaling relation between OOH and OH adsorption energies. [7,8] As a consequence, a significant amount of energy is spent on Biomass is recognized as an ideal CO 2 neutral, abundant, and renewable resource substitute to fossil fuels. The rich proton content in most biomass derived materials, such as ethanol, 5-hydroxymethylfurfural (HMF) and glycerol allows it to be an effective hydrogen carrier. The oxidation derivatives, such as 2,5-difurandicarboxylic acid from HMF, glyceric acid from glycerol are valuable products to be used in biodegradable polymers and pharmaceuticals. Therefore, combining biomass-derived compound oxidation at the anode and hydrogen evolution reaction at the cathode in a biomass electrolysis or photo-reforming reactor would present a promising strategy for coproducing high value chemicals and hydrogen with low energy consumption and CO 2 emissions. This review aims to combine fundamental knowledge on photo and electro-assisted catalysis to provide a comprehensive und...

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Enhanced hydrogen production over incorporated Cu and Ni into titania photocatalyst in glycerol-based photoelectrochemical cell: Effect of total metal loading and calcination temperature

Cited by 44 publications

References 69 publications

Experimental and DFT Insights on Microflower g-C₃N₄/BiVO₄ Photocatalyst for Enhanced Photoelectrochemical Hydrogen Generation from Lake Water

Experimental and DFT Insights on Microflower g-C₃N₄/BiVO₄ Photocatalyst for Enhanced Photoelectrochemical Hydrogen Generation from Lake Water

Solar Panel Technologies for Light-to-Chemical Conversion

Progress and Perspectives in Photo‐ and Electrochemical‐Oxidation of Biomass for Sustainable Chemicals and Hydrogen Production

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Enhanced hydrogen production over incorporated Cu and Ni into titania photocatalyst in glycerol-based photoelectrochemical cell: Effect of total metal loading and calcination temperature

Cited by 44 publications

References 69 publications

Experimental and DFT Insights on Microflower g-C3N4/BiVO4 Photocatalyst for Enhanced Photoelectrochemical Hydrogen Generation from Lake Water

Experimental and DFT Insights on Microflower g-C3N4/BiVO4 Photocatalyst for Enhanced Photoelectrochemical Hydrogen Generation from Lake Water

Solar Panel Technologies for Light-to-Chemical Conversion

Progress and Perspectives in Photo‐ and Electrochemical‐Oxidation of Biomass for Sustainable Chemicals and Hydrogen Production

Contact Info

Product

Resources

About

Experimental and DFT Insights on Microflower g-C₃N₄/BiVO₄ Photocatalyst for Enhanced Photoelectrochemical Hydrogen Generation from Lake Water

Experimental and DFT Insights on Microflower g-C₃N₄/BiVO₄ Photocatalyst for Enhanced Photoelectrochemical Hydrogen Generation from Lake Water