Hierarchical porous cellulose/lanthanide hybrid materials as luminescent sensor
来源期刊：Journal of Rare Earths2018年第10期
论文作者：Wentao Fan Jiaojiao Du Junfeng Kou Zeyu Zhang Fengyi Liu
文章页码：1036 - 1043
摘 要：Photoluminescent hybrid materials containing carboxymethyl cellulose and lanthanide ions（Eu3+, Tb3+）were prepared by a facile method under ambient conditions. Lanthanide ions were covalently grafted to the cellulose framework through coordination with the carboxylic groups of the cellulose. Hybrid materials were fabricated as hydrogel and aerogel. As shown by SEM and pore parameters, aerogel materials which were obtained by supercritical CO2 drying show hierarchical porous structure. The photoluminescence spectrum of the hybrid materials shows the characteristic red emission of Eu3+ ion and green emission of Tb3+. Further luminescent investigations reveal that these hybrid materials can detect Fe3+ with relative selectivity and high sensitivity, which suggests that the hybrid materials could be a promising luminescent probe for selectively sensing Fe3+ ion.
Wentao Fan，Jiaojiao Du，Junfeng Kou，Zeyu Zhang，Fengyi Liu
College of Chemistry and Chemical Engineering,Yunnan Normal University
摘 要：Photoluminescent hybrid materials containing carboxymethyl cellulose and lanthanide ions（Eu3+, Tb3+）were prepared by a facile method under ambient conditions. Lanthanide ions were covalently grafted to the cellulose framework through coordination with the carboxylic groups of the cellulose. Hybrid materials were fabricated as hydrogel and aerogel. As shown by SEM and pore parameters, aerogel materials which were obtained by supercritical CO2 drying show hierarchical porous structure. The photoluminescence spectrum of the hybrid materials shows the characteristic red emission of Eu3+ ion and green emission of Tb3+. Further luminescent investigations reveal that these hybrid materials can detect Fe3+ with relative selectivity and high sensitivity, which suggests that the hybrid materials could be a promising luminescent probe for selectively sensing Fe3+ ion.
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