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Biomass-derived porous carbon materials were selectively and controllably prepared by carbonization of hay slag (HS) and activation with ZnCl2 combined with Mg(NO 3 ) 2 ⋅ 6 H2O. The prepared porous carbon materials had an apparent multi-pore structure and a large specific surface area. In a 6 mol/L KOH with a current density of 0.25 A/g, the specific capacitance of the prepared sample was 220 F/g. Further study showed that the optimal pore size range of porous carbon materials for electrode preparation was 0.8–1.2 nm. At the same time, the porous carbon material had a good adsorption capacity for CO2, and the adsorbent performance was 3.09 mmol/g at 0∘C and 1 bar. Adsorbents with the pore size range of 0.5–0.8 nm had the best CO2 adsorption performance. This integrated strategy study expanded biomass-derived porous carbon materials with controllable pore structures to match different application strategies. [ABSTRACT FROM AUTHOR]

Low-density porous tin monolith with the pteridophyta leaf-like structure was fast fabricated by a facile route via the electrochemical deposition process via hydrogen bulb dynamics templates within less than 1min. The samples were characterized by scanning electron microscope, X-ray diffraction and so on. The results indicated that the deposited tin porous structure could be easily controlled to form film or monolith by adjusting the tin precursor concentration and surfactant content. [ABSTRACT FROM AUTHOR]