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Mn-promoted MoS2 catalysts for CO2 hydrogenation: enhanced methanol selectivity due to MoS2/MnOx interfaces† † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d3cy01711g

ABSTRACT:

SUBMITTER: Alves G

PROVIDER: S-EPMC10913851 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature

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CO2-switchable emulsions with controllable size and viscosity† † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d3sc00228d

Project description:CO2-responsive emulsions have attracted considerable attention in recent years because of their biocompatibility and easy removal of CO2. However, most CO2-responsive emulsions are only used in stabilization and demulsification processes. In this paper, we report CO2-switchable oil-in-dispersion (OID) emulsions co-stabilized with silica nanoparticles and anionic NCOONa, in which the required concentrations of NCOONa and silica particles were as low as 0.01 mM and 0.0001 wt%, respectively. Besides reversible emulsification/demulsification, the aqueous phase containing the emulsifiers was recycled and reused with the CO2/N2 trigger. More importantly, the properties of the emulsions, such as droplet sizes (40–1020 μm) and viscosities (6–2190 Pa s), were intelligently controlled by the CO2/N2 trigger, and meanwhile reversible conversion between OID emulsions and Pickering emulsions was achieved. The present method offers a green and sustainable way to regulate the emulsion states, which enables smart control of emulsions and widens their potential applications. CO2-switchable emulsions with on-demand stability and controllable properties, such as droplet size, viscosity, and emulsion type, were prepared with a CO2-switchable surfactant and silica nanoparticles.

| S-EPMC10034261 | biostudies-literature

Reversible and irreversible reaction mechanisms of Li–CO2 batteries† † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d4sc00383g