Hydrogen Energy as Sustainable Energy Resource for Carbon-Neutrality Realization

Abstract

For stepping toward a sustainable future, reducing carbon footprints by generation of a clean source of energy is a viable option that captivates researchers all around the globe. Hydrogen energy in the form of renewable energy resource has achieved sustainable status and is perceived as a feasible alternative of fossil derivative fuels ascribed to higher gravimetric density, which offers superior efficiency over conventional fuels. However, the nature of the H 2 synthetic route is a determinant for clean energy production. Traditional gray H 2 production generated via fossil fuels catalyzes global warming. Therefore, there is the need to develop environmentally benign methodologies such as green and blue H 2 generation routes which are discussed in this review article by comparing distinct methods for the production of H 2 with minimal carbon emission, along with their merits and demerits. We have precisely discussed the optimization of photocatalytic H 2 evolution by optimizing the cost and catalytic system in terms of sustainability. Exploitation of cheap and noble metal free catalysts has been stressed for generating green H 2 . The research domain of this article underlines the significance of green H 2 production in attaining a carbon-neutral society with respect to H 2 economy and its techno-economic analysis toward scalable applicability.

Superlative Porous Organic Polymers for Photochemical and Electrochemical CO2 Reduction Applications: From Synthesis to Functionality

“…Based on the current trend of research focused on POP materials, it is expected that synthetic developments in designing unique POP based metal-free/metallized/heterostructured hybrid systems will open the way for large-scale CO 2 RR aspirations and will step forward in developing a sustainable future. In addition to CO 2 RR applications, researchers should also optimize the scalability of HER to achieve a carbon-neutral society. − …”

Flatland materials for photochemical and electrochemical nitrogen fixation applications: from lab-door experiments to large-scale applicability

“…Renewable energy resources such as hydrogen production via overall water splitting and hydrocarbon fuels originating from CO 2 reduction reaction (CO 2 RR) are the front-runners aimed at alleviating carbon emissions and promoting a transition to a low-carbon economy. 3–5 Despite significant progress in the research of hydrogen evolution reaction (HER) and CO 2 RR, both these processes have some disadvantages 6 such as extraordinary costs associated with storage and transportation of the hydrogen carrier and separation of the desired product from the mixture of carbon-based products. Utilizing ammonia (NH 3 ) as the source of renewable energy and as the transport medium for carrying H 2 fuel comes with several benefits such as its compactness and higher efficiency in durable and longer distance energy endeavours.…”

Synthesis of Fe3O4 embedded LIG via laser ablation of PI/Fe(acac)3 film for enhanced electrocatalytic hydrogen evolution

“…Hence, Exploring and applying green energy sources becomes imperative [1][2][3]. Hydrogen as a renewable energy source has several advantages such as high heat value and low pollution, which make it an ideal next-generation energy source [4,5]. Hydrogen evolution reaction (HER) is the most studied and applied hydrogen production method due to high purity of the product [6].…”