Green hydrogen production via photo-reforming of bio-renewable resources

Banerjee, Debarun; Kushwaha, Nidhi; Shetti, Nagaraj P.; Aminabhavi, Tejraj M.; Ahmạd, Ejaz

doi:10.1016/j.rser.2022.112827

Cited by 33 publications

(17 citation statements)

References 116 publications

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“…Because H 2 is evolved as a gaseous phase product, for its separation, industrially reliable methods such as pressure swing adsorption, cryogenic distillation, or membrane separation (e.g., twin reactors) are well-established. However, similar to other PR valuable products, H 2 also requires efficient storage and transportation systems. , At present, H 2 is majorly stored in the compressed gaseous form or cryogenic liquid form. Although both methods are quite successful for short-term stationary storage but pose different levels of challenges for the mobility and long-term storage of H 2 .…”

Section: Product Extraction and Storagementioning

confidence: 99%

“…However, similar to other PR valuable products, H 2 also requires efficient storage and transportation systems. 640,641 At present, H 2 is majorly stored in the compressed gaseous form or cryogenic liquid form. Although both methods are quite successful for short-term stationary storage but pose different levels of challenges for the mobility and long-term storage of H 2 .…”

Section: Hydrogen Storage Technologiesmentioning

confidence: 99%

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Photoreforming of Waste Polymers for Sustainable Hydrogen Fuel and Chemicals Feedstock: Waste to Energy

et al. 2023

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Energy from renewable resources is central to environmental sustainability. Among the renewables, sunlight-driven fuel synthesis is a sustainable and economical approach to produce vectors such as hydrogen through water splitting. The photocatalytic water splitting is limited by the water oxidation half-reaction, which is kinetically and energetically demanding and entails designer photocatalysts. Such challenges can be addressed by employing alternative oxidation half-reactions. Photoreforming can drive the breakdown of waste plastics and biomass into valuable organic products for the production of H 2 . We provide an overview of photoreforming and its underlying mechanisms that convert waste polymers into H 2 fuels and fine chemicals. This is of paramount importance from two complementary perspectives: (i) green energy harvesting and (ii) environmental sustainability by decomposing waste polymers into valuables. Competitive results for the generation of H 2 fuel without environmental hazards through photoreforming are being generated. The photoreforming process, mechanisms, and critical assessment of the field are scarce. We address such points by focusing on (i) the concept of photoreforming and up-to-date knowledge with key milestones achieved, (ii) uncovering the concepts and challenges in photoreforming, and (iii) the design of photocatalysts with underlying mechanisms and pathways through the use of different polymer wastes as substrates. CONTENTS

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Section: Product Extraction and Storagementioning

confidence: 99%

Section: Hydrogen Storage Technologiesmentioning

confidence: 99%

Photoreforming of Waste Polymers for Sustainable Hydrogen Fuel and Chemicals Feedstock: Waste to Energy

et al. 2023

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“…In this view, H 2 is the ideal energy vector because it can be produced with several sustainable technologies and obtaining, as the main by-products of its combustion, water and CO 2 that can be easily integrated in circular approaches (as the “blue hydrogen” where the obtained CO 2 is captured and stored [ 1 ]). In the vision of an even more decarbonized economy, the production of hydrogen in fully sustainable ways (i.e., “green hydrogen”) is mandatory, together with the use of uncritical materials [ 2 , 3 ]. The solar photoreforming of sustainable organic substrates can be considered a well-performing and green process that allows the production of hydrogen from biomass or waste, valorising them as raw materials and using the solar energy as a renewable energy source [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

“…In the vision of an even more decarbonized economy, the production of hydrogen in fully sustainable ways (i.e., “green hydrogen”) is mandatory, together with the use of uncritical materials [ 2 , 3 ]. The solar photoreforming of sustainable organic substrates can be considered a well-performing and green process that allows the production of hydrogen from biomass or waste, valorising them as raw materials and using the solar energy as a renewable energy source [ 2 ]. To increase the hydrogen evolution from photoreforming, the suitable selection of photocatalysts that are able to absorb the solar radiation and efficiently oxidize the organic substrates acting as hole scavengers is necessary.…”

Section: Introductionmentioning

confidence: 99%

CeO2-rGO Composites for Photocatalytic H2 Evolution by Glycerol Photoreforming

et al. 2023

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The interaction between CeO2-GO or CeO2-rGO and gold as co-catalysts were here investigated for solar H2 production by photoreforming of glycerol. The materials were prepared by a solar photoreduction/deposition method, where in addition to the activation of CeO2 the excited electrons were able to reduce the gold precursor to metallic gold and the GO into rGO. The presence of gold was fundamental to boost the H2 production, whereas the GO or the rGO extended the visible-light activity of cerium oxide (as confirmed by UV-DRS). Furthermore, the strong interaction between CeO2 and Au (verified by XPS and TEM) led to good stability of the CeO2-rGO-Au sample with the evolved H2 that increased during five consecutive runs of glycerol photoreforming. This catalytic behaviour was ascribed to the progressive reduction of GO into rGO, as shown by Raman measurements of the photocatalytic runs. The good charge carrier separation obtained with the CeO2-rGO-Au system allowed the simultaneous production of H2 and reduction of GO in the course of the photoreforming reaction. These peculiar features exhibited by these unconventional photocatalysts are promising to propose new solar-light-driven photocatalysts for green hydrogen production.

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“…Therefore, an efficient energy conversion and storage system is needed in addition to researching renewable energy sources. − Compared to alternative methods that rely on fossil fuels, electrochemical water splitting to produce hydrogen is a technology that shows promise because it emits no carbon dioxide, is highly pure, and may be used to store intermittent renewable energy and reduce environmental pollution. , Hydrogen (H 2 ) gas stands to be an emerging energy carrier due to its high energy density (between 120 and 142 MJ/kg) and release of water as a clean combustion product . Hydrogen is a practical, sustainable, clean fuel transport option for future energy. − Water electrolysis is currently considered a successful method for producing pure hydrogen. − Nowadays, the production of eco-friendly renewable energy and effective dual electrocatalysts for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is receiving more attention. Modern catalysts for kinetically slow OER include precious metal oxides (IrO 2 and RuO 2 ) and Pt/C for electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient and Low-Cost CuFeCN as an OER and HER Electrocatalyst for Sustainable Hydrogen Production

Shetti,

Sreenivasulu,

Mathi

et al. 2023

Energy Fuels

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Developing low-cost, easily synthesizable, and incredibly efficient electrocatalysts for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) has become essential for switching from nonrenewable energy to hydrogen fuel generation. Energy adaptation and storage required the creation of non-noble-metal electrocatalysts with admirable motion along with stability for water electrolysis. Cu@FeCN materials have been characterized using a variety of physical and electrochemical approaches, and the relationship between the materials and activity has been investigated. The newly developed Cu@FeCN electrode shows sustained stability and strong catalytic activity with enhanced electrochemical active surface area in line with H 2 O splitting maintaining an alkaline condition requiring a very short overpotential of only 320 mV at a current density of 20 mA/cm 2 with small Tafel slopes. Cu@FeCN has a computed TOF (turnover frequency) of 0.321 s −1 , which is twice as high as the IrO 2 catalyst's calculated TOF of 0.173 s −1 at 1.60 V. This demonstrates that the Cu@FeCN catalyst is innately active for exceptional HER and OER performances as well as satisfying kinetics to overcome the lethargic water oxidation rate. At the anode (O 2 ) and cathode (H 2 ), respectively, at 1.54 V, solar-derived water electrolysis displays nonstop bubble formation.

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Green hydrogen production via photo-reforming of bio-renewable resources

Cited by 33 publications

References 116 publications

Photoreforming of Waste Polymers for Sustainable Hydrogen Fuel and Chemicals Feedstock: Waste to Energy

Photoreforming of Waste Polymers for Sustainable Hydrogen Fuel and Chemicals Feedstock: Waste to Energy

CeO2-rGO Composites for Photocatalytic H2 Evolution by Glycerol Photoreforming

Highly Efficient and Low-Cost CuFeCN as an OER and HER Electrocatalyst for Sustainable Hydrogen Production

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