Benign integration of a Zn-Azolate metal-organic framework onto textile fiber for ammonia capture

Ran Cao, Zhijie Chen, Yongwei Chen, Karam B. Idrees, Sylvia L. Hanna, Xingjie Wang, Timothy A. Goetjen, Qijun Sun, Timur Islamoglu, Omar K. Farha*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


Ammonia (NH3) exposure has a serious impact on human health because of its toxic and corrosive nature. Therefore, efficient personal protective equipment (PPE) such as masks is necessary to eliminate and mitigate NH3exposure risks. Because economically and environmentally viable conditions are of interest for large-scale manufacture of PPE, we herein report a benign procedure to synthesize a Zn-azolate metal-organic framework (MOF), MFU-4, for NH3capture. The surface area and morphology of MFU-4 obtained in alcohol solvents at room temperature is consistent with that of traditionally synthesized MFU-4 in N,N-dimethylformamide at 140 °C. In addition to its large NH3uptake capacity at 1 bar (17.7 mmol/g), MFU-4 shows outstanding performance in capturing NH3at low concentration (10.8 mmol/g at 0.05 bar). Furthermore, the mild synthetic conditions implemented make it facile to immobilize MFU-4 onto cotton textile fiber. Enhanced NH3capture ability of the MFU-4/fiber composite was also attributed to the well-exposed MOF particles. The benign synthetic MFU-4 procedure, high NH3uptake, and easy integration onto fiber pave the way toward implementation of similar materials in PPE.

Original languageEnglish (US)
Pages (from-to)47747-47753
Number of pages7
JournalACS Applied Materials and Interfaces
Issue number42
StatePublished - Oct 21 2020


  • Azolate MOF
  • Benign synthesis
  • MOF/fiber composite
  • NHcapture

ASJC Scopus subject areas

  • Materials Science(all)


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