A Multifunctional Tb-MOF for Highly Discriminative Sensing of Eu3+/Dy3+ and as a Catalyst Support of Ag Nanoparticles

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Guo-Wang Xu
  • Ya-Pan Wu
  • Wen-Wen Dong
  • Jun Zhao
  • Xue-Qian Wu
  • Dong-Sheng Li

Detail(s)

Original languageEnglish
Article number1602996
Journal / PublicationSmall
Volume13
Issue number22
Online published18 Apr 2017
Publication statusPublished - 13 Jun 2017
Externally publishedYes

Abstract

Exploring novel multifunctional rare earth materials is very important because these materials have fundamental interests, such as new structural facts and connecting modes, as well as potential technological applications, including optics, magnetic properties, sorption, and catalytic behaviors. Especially, employing these nanomaterials for sensing or catalytic reactions is still very challenging. Herein, a new superstable, anionic terbium-metal–organic-framework, [H2N(CH3)2][Tb(cppa)2(H2O)2], (China Three Gorges University (CTGU-1), H2cppa = 5-(4-carboxyphenyl)picolinic acid), is successfully prepared, which can be used as a turn-on, highly-sensitive fluorescent sensor to detect Eu3+ and Dy3+, with a detection limitation of 5 × 10−8 and 1 × 10−4m in dimethylformamide, respectively. This result represents the first example of lanthanide-metal–organic-frameworks (Ln-MOF) that can be employed as a discriminative fluorescent probe to recognize Eu3+ and Dy3+. In addition, through ion exchanging at room temperature, Ag(I) can be readily reduced in situ and embedded in the anionic framework, which leads to the formation of nanometal-particle@Ln-MOF composite with uniform size and distribution. The as-prepared Ag@CTGU-1 shows remarkable catalytic performance to reduce 4-nitrophenol, with a reduction rate constant κ as large as 2.57 × 10−2 s−1; almost the highest value among all reported noble-metal-nanoparticle@MOF composites.

Research Area(s)

  • 4-nitrophenol, Ag@MOF composite, catalysts, sensors, Tb-MOFs

Citation Format(s)

A Multifunctional Tb-MOF for Highly Discriminative Sensing of Eu3+/Dy3+ and as a Catalyst Support of Ag Nanoparticles. / Xu, Guo-Wang; Wu, Ya-Pan; Dong, Wen-Wen; Zhao, Jun; Wu, Xue-Qian; Li, Dong-Sheng; Zhang, Qichun.

In: Small, Vol. 13, No. 22, 1602996, 13.06.2017.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review