A pluronic 123 (P123)-occluded mesoporous molecular sieve Zr-SBA-15, Zr-SBA(P) was modified with triethylenetetramine (TETA) and tested for CO2 adsorption. The synthesized materials were characterized by powder X-ray diffraction, N2 adsorption-desorption, dispersive spectroscopy, thermogravimetric analysis, temperature-programmer desorption of CO2, and Fourier transform infrared spectroscopy. The results of CO2 adsorption show that the TETA and P123 species have positive effects on the CO2 adsorption capacity of the adsorbent, and the performance of the as-prepared adsorbent in a stream of low CO2 concentration is excellent. At 50wt-% TETA loading, Zr-SBA(P) has a maximum capacity of 4.27mmolg-1 in a stream of 5% CO2 at 50°C, ∼33.5% higher than the adsorbent prepared in the absence of P123. In addition, the adsorbent is superior in reusability. It is envisaged that the adsorbent will find wide application in CO2 capture.
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