Chemical transformations of highly toxic H2S to promising clean energy in MOFs

Metal-Organic Frameworks (MOFs) are one of the most attractive and promising candidates for sequestering toxic H2S. Furthermore, the chemical transformation of H2S within their pores to form polysulfides is one of the most exciting discoveries for the development of new technologies for future applications in lithium-sulfur batteries. Herein, we discuss how a group of selected MOFs have been used in the field of the adsorption and oxidation of H2S. Mainly, it is presented the main pathway in the conversion mechanism to understand the relevance of the metal center and the linker, emphasizing the relevant role of open metal sites (OMS) and hemilabile (non-permanent) sites for the generation of polysulfides. Finally, we expect that this review article can provide relevant insights on re-utilizing MOFs, previously used for capturing toxic H2S, to investigate a new fascinating environmental-remediation application which is the generation of clean energy.