Recent progress in homogeneous light-driven hydrogen evolution using first-row transition metal catalysts

Electrocatalytic hydrogen generation using tripod containing pyrazolylborate-based copper(ii), nickel(ii), and iron(iii) complexes loaded on a glassy carbon electrode

“…15,16 H 2 may also be produced efficiently using molecular electrocatalysts, such as transition-metal complexes, which are the most stable materials and are used to store energy in chemical bonds as well as generate electricity through hydrogen and oxidation production. 17 For instance, recently, two complexes with bipyridine ligand, namely [Co(bpy) 2 (SCN) 2 ] 1 and [Ni(bpy) 2 (SCN) 2 ] 2 were synthesized and characterized by C.-L. Wang et al 18 Both showed promising catalytic activity for the hydrogen evolution reaction (HER). In an aqueous solution of neutral buffer (pH 7.0), at an overpotential of 837.6 mV, complexes 1 and 2 electro-catalyzed the HER with turnover frequency (TOF) values of 699.6 and 1469 mol H 2 per mol catalyst per h, respectively.…”

Structure and Reactivity of NO/NO+/NO−Pincer and Porphyrin Complexes

“…A lot of chemistry is waiting to be studied on this topic, and the combination of the NO redox activity with the cooperativity of PNP pincer ligands as proton shuttles will certainly give place to interesting chemistry in proton-coupled electron transfer processes, such as the hydrogen evolution reaction. [131] On the other hand, nitroxyl, is becoming increasingly popular due to its biological effects, which only partially overlap those of NO * , showing functions of its own. It has also been shown to be easily produced from by mild, biologically relevant reducing agents.…”

Exploring Multidimensional Chemical Spaces: Instrumentation and Chemical Systems for the Parallelization of Hydrogen Evolving Photocatalytic Reactions

“…In addition to reaction dependence of the identity and quantity of the PS, experiments varying the WRC identity and concentration are vital to understanding photocatalytic water reduction. Much like PSs, various classes of WRCs are availableincluding noble metal complexes, noble metal colloids, , non-noble metal complexes, ,, non-noble metal colloids and a variety of species which are molecularly tethered to their respective PSs. , Classic work in the field has utilized Pt and Pd colloidal catalysts, which remain some of the most active known catalysts. A great bulk of research approaches the removal of these expensive and rare metals, which has been greatly accelerated with the advent of parallel experimentation.…”