Related Experiment Video
Updated: Sep 22, 2026
Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
Published on: May 15, 2015
Recent progress in rhombohedral boron monosulfide and hydrogen boride for hydrogen-related applications
Jilil Qur'ani Syarifuddin1, Adi Surya Pradipta1,2,3, Hermawan Judawisastra1
1Department of Materials Science and Engineering, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung (ITB), Jl. Ganesha 10, Bandung 40132, West Java, Indonesia. ariewibowo@itb.ac.id.
Abstract:
Hydrogen is a promising energy vector with the potential to become the cornerstone of sustainable energy systems with the support of green production, storage, and utilization technologies. Among the materials explored to advance the hydrogen ecosystem, two-dimensional (2D) boron-based materials have garnered considerable research interest because of their exceptional physicochemical properties, including tunable electronic properties and remarkable chemical stability. While extensive literature on pristine 2D boron nanosheets (borophene) and its hydrogen-related applications exists, comparatively little is known of other emerging members of this material family. This review examines two experimentally realized but underexplored members of this family: rhombohedral boron monosulfide (r-BS) and hydrogen boride (HB). r-BS is assessed as an anodic oxygen evolution reaction (OER) electrocatalyst that supports overall electrochemical hydrogen production by lowering kinetic losses in water oxidation, rather than as a direct hydrogen evolution reaction catalyst. The measured OER response is evaluated in relation to p-type transport, conductive supports, and wettability, whereas the proposed roles of boron vacancies and carbon substitution are identified as theoretical predictions. HB is discussed in the context of a solid-state hydrogen storage material, where its unique H-terminated layered structure not only offers favorable thermodynamic and gravimetric properties, but also enables stimulus-dependent dehydrogenation with thermal, photoinduced, and photothermal release pathways. By linking structure, synthesis, and interfacial chemistry to function, this review defines key challenges in scalable production, defect and layer control, mechanistic validation, recyclable hydrogen release/storage, and system-level assessment. Finally, current research challenges and future opportunities are discussed, offering an outlook on both r-BS and HB for hydrogen technology and related applications.
Related Concept Videos
02:55Exceptions to the Octet Rule
03:24Hybridization of Atomic Orbitals I
03:08Hydroboration-Oxidation of Alkenes
02:36Regioselectivity and Stereochemistry of Hydroboration
Hydroboration proceeds in a concerted fashion with the attack of borane on the π bond, giving a cyclic four-centered transition state. The –BH2 group is bonded to the less substituted carbon and –H to the more substituted carbon. The concerted nature requires the simultaneous addition of –H and –BH2 across the same face of the alkene giving syn stereochemistry.
02:47Alkynes to Aldehydes and Ketones: Hydroboration-Oxidation
One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.
01:26Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation reactions,...