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Herein, we investigated novel carbon-containing P123 copolymer-activated boron nitride whiskers (P123-CBNW) fabricated via a structure directing approach followed by a single-step heat treatment under N 2 . The resulting materials were found to be highly micro- and mesoporous. The influence of the activating agent (P123 copolymer) on the CO 2 adsorption efficiency was determined. The prepared samples possessed high specific surface areas (594-1732 m 2 /g) and micropore volumes (0.258-0.672 cm 3 /g). The maximum CO 2 uptakes of the prepared adsorbents were in the range 136-308 mg/g (3.09-7.01 mmol/g) at 273 K and 1 bar and 97-114 mg/g (2.22-4.62 mmol/g) in the following order: CBNW &lt; P123-CBNW3 &lt; P123-CBNW2 &lt; P123-CBNW1 &lt; P123-CBNW0.5. The isosteric heat of adsorption values (∆ Q  st ) were found to be 33.7-43.7 kJ/mol, demonstrating the physisorption nature of the CO 2 adsorption. Extensive analysis revealed that the presence of carbon, the high specific surface area, the high microporosity, and the chemical structural defects within the adsorbents are responsible for raising the CO 2 adsorption ability and the selectivity over N 2 gas. The fabricated adsorbents show excellent regeneration ability after several repeated adsorption cycles, making the prepared adsorbents promising candidates for gas storage applications.

Effect of Triblock Copolymer on Carbon-Based Boron Nitride Whiskers for Efficient CO2 Adsorption