Hydrogen Evolution Reaction In article number 2300183, Cheol-Min Park, Ki-Joon Jeon, and co-workers discover the sulfidation of Pd-based nanoclusters on monolayer MoS2 as a two-birds-with-one-stone strategy for tuning metallic 1T-MoS2 phase promoting hydrogen production heterogeneous catalyst. The cover visualizes 1T-phase enrichment in close proximity to PdxSy that function electrocatalytic ac...

The use of alkaline residue from the acetylene industry (carbide slag, CS) as in-bed sorbent to remove H2S syngas biomass/waste fluidized bed (FB) gasification was investigated. Measurements were conducted in a laboratory FB applying differential conversion technique, tracking reaction using both gas measurements and solid analysis. Apparent kinetics obtained, without external mass transfer lim...

We report on the fabrication of a subnanometer-thick epitaxial PbS film on polydiacetylene (PDA) substrate. The film is formed by cation-absorption in PbCl2 solution followed by sulfidation in mixed H2S/N2 gas, exhibiting a flat and smooth surface morphology. The strong adsorbate-surface interaction between the lead hydrolysis complexes and the carboxyl headgroups on the surface of PDA accounts...

A unique process for regenerating calcium-based sorbents which are in the form of calcium sulfide was demonstrated by employing thermogravimetric analysis (TGA). The process converts calcium sulfide to calcium oxide by subjecting particles of the material to repeated cycles of oxidation and reduction at temperatures between 950 and 1100 °C. During each cycle a small portion of material is first...

Wurtzite CuInS2 nanoleaves were synthesized by Cu1.94S-assisted growth. By observing the evolution of structures and phases during the growth process, Cu1.94S nanocrystals were found to be formed after uninterrupted oxidation and sulfidation of copper nanoparticles at the early stage, serving as catalysts to introduce the Cu and In species into CuInS2 nanoleaves growth for inherent property of ...

Phase transfer techniques possess remarkable advantages for the synthesis of inorganic nanomaterials. In contrast to the abundant reports on the preparation of noble metal nanoparticles using phase transfer, the number of semiconductor nanocrystals syntheses based on phase transfer techniques is still limited. Herein, we report a systematic study of the phase transfer-based synthesis of HgS nan...

Background: Precious objects made of silver and/or its alloys tarnish and become black when exposed to ambient atmospheres containing moisture and ppb-amounts of H2S. Such objects usually contain small but variable amounts of copper as alloying constituent and this affects the corrosion process due to a preferential oxidation of copper. However the visual appearance of the formed tarnishing lay...