A comprehensive review of hydrogen production and storage: A focus on the role of nanomaterials

Epelle, Emmanuel I.; Desongu, Kwaghtaver S.; Obande, Winifred; Adeleke, A. A.; Ikubanni, P.P.; Okolie, Jude A.; Gunes, Burcu

doi:10.1016/j.ijhydene.2022.04.227

Cited by 93 publications

(39 citation statements)

References 235 publications

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“…This makes H 2 transportation and mobility much easier and more cost-effective. A couple of materials such as metals, metal oxides, metal borohydrides, and hydrides are used as solid chemical support for H 2 storage. ,− Huang et al, recently discussed in detail the usage of all these materials as chemical solid support for H 2 storage . Among these materials, borohydrides showed very high H 2 mass density, i.e., in the range between 10.5 wt % to 18.5 wt %, but the desorption temperature is very high, i.e., ranging from 150 to 260 °C.…”

Section: Product Extraction and Storagementioning

confidence: 99%

“…Other metal hydrides such as MgH 2 or LiH also showed very similar trends. Mohan et al reviewed the use of carbon-based materials as potential solid-state hydrogen storage . Although carbon basted materials such as graphene, carbon nanotubes, fullerenes, etc., showed hydrogen storage mass density around the proposed by DOE, but carbon-based materials are much environmentally and eco-friendly.…”

Section: Product Extraction and Storagementioning

confidence: 99%

“…Mohan et al reviewed the use of carbon-based materials as potential solid-state hydrogen storage. 654 Although carbon basted materials such as graphene, carbon nanotubes, fullerenes, etc., showed hydrogen storage mass density around the proposed by DOE, but carbon-based materials are much environmentally and eco-friendly. Similarly, metal−organic frameworks have also been tested for the solid-state H 2 storage.…”

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: Product Extraction and Storagementioning

confidence: 99%

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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“…Thermodynamically, splitting of water to H 2 and O 2 is an endothermic process having a positive value for the change in the Gibbs free energy (Δ G °) of around 237 kJ mol –1 . This means, for the two electron process, H 2 O can be electrolyzed under standard conditions through an externally applied voltage of 1.23 eV. , The overall reaction, i.e., reduction of proton and oxidation of water, can be presented by the following equations: normalH 2 normalO → normalH 2 + 1 / 2 normalO 2 goodbreak0em1em⁣ normalΔ G ° = prefix+ 237 nobreak0em.25em⁡ kJ mol − 1 2 normalH + + 2 normale − → normalH 2 goodbreak0em1em⁣ E ° = 0 nobreak0em.25em⁡ normalV normalO 2 + 4 normalH + + 4 normale − → 2 normalH 2 normalO goodbreak0em1em⁣ E ° = 1.23 nobreak0em.25em⁡ normalV The water redox potential determines the necessary bandgap and the band edge positions for a semiconductor-based photocatalyst in a photocatalytic and PEC water splitting for the production of H 2 fuel. , …”

Section: Photocatalytic (Pc) and Photoelectrochemical (Pec) Water Spl...mentioning

confidence: 99%

Recent Trends in Sustainable Solar Energy Conversion Technologies: Mechanisms, Prospects, and Challenges

et al. 2023

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The current global transition from conventional fossil-fuel-based systems to green, sustainable, and renewable energy is realizing new challenges associated with device efficiencies. Among the green energy approaches available, efficient solar energy conversion into green chemical and electrical energy can ensure the upcoming demands of global future energy in an environmentally friendly and sustainable way. However, the sunlight energy cannot be utilized directly as a result of its intermittent and diffuse nature. This demands the development of efficient and economically viable technologies for its efficient conversion to an applicable source of energy. The practical realization of this dream on an industrial scale is still a longstanding challenge for researchers. Therefore, the scientists and technologists across the globe are in constant pursuit to develop/improve highly efficient, environmentally benign, and economically viable sustainable chemistry and engineering devices. At present, three technologies: (i) photoelectrochemical water splitting, (ii) photoreforming of plastic- or biomass-derived waste, and (iii) organic photovoltaics in the form of perovskite solar cells have emerged as the best for converting the sunlight energy into organic valuables and “green” H2 fuel or electricity. In this review, we will focus on introducing the basic principles, mechanistic insights, recent trends, and future prospects for solar to green energy using these technologies.

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“…The reviews regarding electrolysis are numerous, mainly technical, 53‐62 but also historical 29,63,64 . As for works that consider various technologies, there is a relevant review on thermolysis and photolysis, 65 as well as few relevant reviews that also include electrolysis, 66,67 most of them from a broader view that includes polluting hydrogen production methods without analysing water splitting in such detail, 68‐74 all of them focused on technical analysis.…”

Section: Introductionmentioning

confidence: 99%

Sun, heat and electricity. A comprehensive study of non‐pollutant alternatives to produce green hydrogen

Mancera

Segura

Andújar

et al. 2022

Intl J of Energy Research

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Summary Water‐based hydrogen production is currently an attractive research field, as it provides a greener method to produce hydrogen than existing alternatives. Green hydrogen is expected to progressively replace fossil fuels, which are highly harmful environmentally. This paper presents a critical analysis over time of the main water splitting technologies currently in use for sustainable hydrogen production. As a result of the critical analysis, all the studied techniques have been ordered chronologically in the way that it is possible to understand how new materials have driven to new techniques, more efficient and less expensive. This allows having a complete vision of these technologies. A high level of maturity has been reached in electrolysis, while other techniques still have a long way to go, although many improvements and relevant advancements have been made over the years. The paper offers a global and comparative vision of each technology. From this, it is possible to identify the different paths where efforts are needed to make water‐based hydrogen production a mature, stable and efficient technology.

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A comprehensive review of hydrogen production and storage: A focus on the role of nanomaterials

Cited by 93 publications

References 235 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

Recent Trends in Sustainable Solar Energy Conversion Technologies: Mechanisms, Prospects, and Challenges

Sun, heat and electricity. A comprehensive study of non‐pollutant alternatives to produce green hydrogen

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