A novel approach for the preparation of sodium alginate foams by ice-templating, followed by freeze-drying was described. Important effects of the preparation parameters on the macroporous structure of the final materials could be evidenced. A functionalization procedure for the preparation of acidified macro/meso-porous foams with high surface area was optimized and the efficiency of one alginic acid foam was demonstrated for the adsorption of a basic dye (methylene blue) from aqueous solution. The comparison of the maximum monolayer adsorption capacity of this adsorbent with the values already reported for other biosorbents clearly identified alginic acid foams as competitive sorbents for the removal of methylene blue from aqueous solutions.

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具有分级孔隙率的海藻酸钠和酸性泡沫：作为染料吸附剂的制备，表征和效率

描述了一种通过冰模板法制备藻酸钠泡沫的新方法，然后进行冷冻干燥。可以证明制备参数对最终材料大孔结构的重要影响。优化了制备高表面积酸化大孔/中孔泡沫的功能化程序，并证明了一种藻酸泡沫从水溶液中吸附碱性染料（亚甲基蓝）的效率。将该吸附剂的最大单层吸附能力与其他生物吸附剂已经报告的值进行比较，清楚地确定了藻酸泡沫是从水溶液中去除亚甲基蓝的竞争性吸附剂。