A composite broad-spectrum adsorbent was prepared via uniformly combining the zirconium phosphate [Zr(HOP4)2] with the mesoporous melamine resin.The adsorption properties on SO2 and NH3 were investigated simultaneously and its characteristics were achieved by XRD,XPS,N2-adsorption,FT-IR,TG and SEM.The results shown that the mesoporous melamine resin was observed with a network cross-linked morphology.The specific surface area was 548.81m2/g and the average pore diameter was 9.25nm.The specific surface area decreased to 103.48～216.03m2/g after the introduction of zirconium phosphate,and the pore size was reduced by about 50%.The mesoporous composite adsorbent represented the distinguished absorption on both toxic gases as several times as any single one.Its adsorption capacity was also better than them in previous reports.It can be concluded that the adsorbing sites of NH3 were mainly P—OH,and the adsorbing sites of SO2 ware zirconium and nitrogen elements.Thus these nanocomposite absorbents might be applied for emergency treatment and military protection.
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基金资助
国家青年自然基金(21401179,21406211);山西省自然基金(201901D111171);中北大学德州分院基金(202005)
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