Coordination Polymers as Heterogeneous Catalysts for Water Splitting and CO₂ Fixation

Abstract

RecommendationsT his virtual special issue focuses a new light on heterogeneous catalysts, which are custom-designed coordination polymers or metal organic framework (MOF) materials, for water splitting and carbon dioxide fixation.Water splitting, which can be performed under either photocatalytical or electrocatalytical conditions, plays an important role in storing light energy and electrical energy in the chemical bond of H 2 .And H 2 is a clean source of high-density energy, which can be considered as a potential alternative of fossil fuels that are getting depleted day by day from our planet Earth.On the other hand, CO 2 , which is responsible for global warming today, is getting increased gradually in our Earth atmosphere due to the industrial revolution and fossil fuel burning.Thus, converting aerial CO 2 , electrocatalytically or photocatalytically, into value-added fuels, such as C 2 H 5 OH, CO, CH 4 , etc., can contribute to the "fossil fuel economy" as well as to the maintenance of CO 2 levels in the atmosphere.The main goal of this virtual special issue is to bring about a collection of contributions from research groups across the globe who are involved in energy-related research, including CO 2 fixation and water splitting.MOFs, a major class of coordination polymers, have been used as heterogeneous catalysts in many contributions in this issue.This issue can be described as a potential guidebook of energy-related research in the areas of the oxygen evolution reaction (OER), the hydrogen evolution reaction (HER), and the management of CO 2 in the context of global warming including the carbon dioxide reduction reaction.This relevant editorial is an attempt to highlight the contributions of this issue by emphasizing their key features.Let us begin with the perspective article on "Metal-Organic Frameworks as Heterogeneous Electrocatalysts for Water Splitting and CO 2 Fixation" by Yang and Wang and their coworkers. 1The authors have generalized the article by providing discussions on recent heterogeneous electrocatalysts for water splitting and carbon dioxide reduction reactions catalyzed by MOF-containing compounds.Most importantly, they have proposed some strategies for devising MOF-based electrocatalysts for CO 2 reduction reaction and water splitting.The authors have mentioned the challenging issues of using MOFs as electrocatalysts, e.g., the poor conductivity of MOFs.Kundu and co-workers have reported trimetallic, CoNiFebased ZIF microfibers as efficient and highly stable electrocatalysts for water oxidation in 1 M KOH solution. 2

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