Journal
DALTON TRANSACTIONS
Volume 46, Issue 8, Pages 2456-2461Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6dt04630d
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Funding
- NSFC of China [21471027, 21671034, 21601032]
- National Key Basic Research Program of China [2013CB834802]
- Fundamental Research Funds for the Central Universities [2412016KJ041, 2412016KJ021]
- Changbai Mountain Scholars of Jilin Province
- Foundation of Jilin Educational Committee [2016498]
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The crystal structure of Cd-MOF-74 was obtained for the first time that possesses high sensitivity for the detection of copper ions from water and simulated biological fluids based on changes in luminescent intensity. Furthermore, Cd-MOF-74 could selectively remove Cu2+ from simulated biological fluids that contain Mg2+, Co2+, Zn2+, Fe2+, Ni2+, Na+, and K+. The adsorption capacity of this adsorbent for copper ions reached 189.5 mg g(-1) and it quickly adsorbed copper ions within 10 minutes under 10 ppm Cu2+ in the simulated biological system. XPS, PXRD, and gas adsorption measurements revealed that this high sensitivity and selectivity of Cd-MOF-74 resulted from the partial substitution of Cd2+ by Cu2+ in the framework. Although many MOF materials have been employed for sensor or selective adsorption of Cu2+, Cd-MOF-74 is the first example of MOFs showing both capabilities in simulated biological fluids, which represents a pioneering work that extends the applications of MOF materials in the biological field.
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