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论文类型：期刊论文

发表时间：2019-01-15

发表刊物：MICROPOROUS AND MESOPOROUS MATERIALS

收录刊物：SCIE、EI

卷号：292

ISSN号：1387-1811

关键字：Porous alumina; Template-free method; Thermal stability; Adsorption

摘要：This work demonstrates a facile organic-free and template-free approach for synthesizing spindle-like alumina with large pore volume and high specific surface area via a gas-liquid interfacial method followed by calcination. The influences of different calcination temperatures on the porous alumina were systematically studied. The possible formation mechanism of the spindle-like structures was also investigated. The results exhibited that the as-obtained amorphous alumina calcined at 300 degrees C had superhigh surface areas (up to 853 m(2)/g). Furthermore, the adsorption performance of the as-prepared amorphous alumina with high surface area was also evaluated. This spindle-like amorphous alumina showed an excellent adsorption capacity (3284 mg/g) for the removal of Congo red from aqueous solution, which indicate this porous alumina may have great potential applications in adsorption and other related areas.