LAUSR

In this work, we study the effects of microscopic shape, crystallinity, and purity for the chemical reaction of CuO nanoparticles with hydrogen sulfide (H2S) to form copper sulfide. Several CuO nanomaterials were prepared via various synthesis techniques, including sol–gel, precipitation, hydrothermal synthesis in the presence of a polymer/surfactant, hydrolysis, and electrospinning, using different copper precursors (nitrate and acetate) and thermal treatment conditions (623–1023 K). The synthesized materials, which had different morphologies (flowerlike, nanobelt-like, petal-like, spherical, and nanofibers) and physiochemical chemical properties (e.g., crystallite size, surface area, and pore volume), were tested for their performance as low-temperature H2S sorbents in fixed-bed experiments at 294 K and 1 atm. Despite ostensible differences between the various properties of the tested sorbents, a strong linear relationship was recognized between the sorbents’ sulfur removal capacity and crystallite size...