期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 7, 页码 3974-3980出版社
AMER CHEMICAL SOC
DOI: 10.1021/am506510q
关键词
metal-organic framework; polyoxometalate; Keggin heteropolyacid; cellulose; decontaminating; HKUST-1; MOF-199; organophosphate; fiber
资金
- USDA National Institute of Food and Agriculture
- Cooperative State Research, Education, and Extension Service [NYC329801]
- College of Human Ecology
- Department of Fiber Science & Apparel Design at Cornell University
- American Association of Textile Chemists and Colorists
- Cornell Agricultural Experiment Station, North Central Regional Research Project NC 170 federal formula funds
A combination of a Keggin-type polyoxometalate (POM)) [CuPW11O39](5-), With a Cu-3(BTC)(2) metal-organic framework (MOF-199/HKUST-1; where BTC is benzene-1,3,5-tricarboxylate), was successfully Self-assembled on a Cellulose substrate, (cotton) with a room-temperature process. Cotton fibers were functionalized by partial etherificatiom Cu-3(BTC)(2) metal-organic framework and polyoxometalate encapsulated in Cu-3(BTC)(2) metal-organic framework were self-assembled on the carboxymethylate ion sites initiated With copper nitrate using ethanol and water as solvents. Octahedral crystals were observed on both MOF-cotton and POM-MOF-cotton; both contained copper while the POM-MOF-cotton also contained tungsten. Occupancy of POM MOF cages was calculated to be about 13%. Moisture content remained at 3 to 4 wt % similar to that of untreated cotton. Reactivity to both hydrogen sulfide and methyl parathion Was higher for POM-MOF-cotton due to the Keggin polyoxometalate and the extra framework cations Cu2+ ions compensating the charges of the encapsulated Keggins The POM-MOF Material was found to effectively remove 0.089 mg of methyl parathion per mg of MOF from a hexane solution while MOF-cotton removed only 0.054 mg of methyl parathion per mg of MOF.
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