Cationic cylindrical polymer brushes based on polybutadiene-block-poly(2-vinylpyridine) were applied as structure-directing agent for mesostructuring FeO nanoparticles into nanotubes. After temperature-controlled template removal, the obtained non-woven catalysts were tested for the photodegradation of ciprofloxacin under terrestrial solar radiation. At a slightly basic pH value, as typically encountered in clinical wastewaters, the mesostructured FeO shows a 4.5 times faster degradation of ciprofloxacin than commercial Aeroxide® TiO P25. Even wide-bandgap ZnO, mesostructured in the same way, is 1.6 times slower. Moreover, the non-woven-like structure of the catalyst allows for easy recovery of the catalyst and operation in a continuous flow reactor. Graphical abstract.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7838145 | PMC |
| http://dx.doi.org/10.1007/s11356-020-10899-6 | DOI Listing |
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