Highly Sensitive Chromium(VI) Sensor

  • ChemPubSoc Europe Logo
  • Author: Chemistry – A European Journal
  • Published Date: 18 January 2018
  • Source / Publisher: Chemistry – A European Journal/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Highly Sensitive Chromium(VI) Sensor

Related Societies

The detection of hexavalent chromium in the environment is important due to the acute toxicity of CrVI. Exposure can lead to damage of the respiratory tract and an increased risk of cancer. Luminescent metal-organic frameworks (LMOFs) have quick response times and excellent sensitivity and selectivity, and thus, could be a good candidate for detecting CrVI. However, a lack of stability in water and poor recyclability have impeded their application so far.


Tong-Liang Hu, Xian-He Bu, Nankai University, China, and colleagues have developed a water-stable LMOF for the detection of CrVI in aqueous solution. The team combined a luminescent anthracene-based ligand and an organic linker with Zn2+ ions to fabricate the LMOF {[Zn3(bpanth)(oba)3]·2DMF}n (H2oba = 4,4’-oxybis(benzoic acid), bpanth = 9,10-bis(4-pyridyl)anthracene, DMF = dimethylformamide).


This LMOF maintains its crystallinity in solution (pH = 3 to 11) and exhibits cyan light emission under UV irradiation. In detection experiments, it showed a selective and sensitive quenching response to CrVI ions in aqueous solution. The compound can easily be regenerated.  According to the researchers, the prepared LMOF holds promise for sensing CrVI ions in sewage systems.


 

Article Views: 726

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH