Abstract
HighlightsMetal–organic-framework-derived carbon hybrids with elaborated nanostructures were prepared via N-molecule- assisted self-catalytic carbonization process.The enriched Fe/Fe-Nx/pyridinic-N active species, porous structures, and conductive carbon nanotubes can synergically augment the intrinsic catalytic activities.
Highlights
Water contaminations by diverse kinds of organic pollutants, such as the endocrine disruptors from plastic manufacture, dyeing wastewaters, and antibiotic used in cultivation industry, have led to severe environmental and human health problems [1,2,3,4,5,6,7]
We have optimized the mass ratios of MIL-88B-NH2 and DCDA from 1:3 to 1:8 to yield the MIL/carbon nanotubes (CNTs)–Fe-3/8, and the results show that the MIL/CNT–Fe-800 at 1:5 shows the optimized morphology and catalytic performance
The powder X-ray diffraction (PXRD) pattern (Fig. S3) of MIL-88B-NH2 demonstrates the formation of homogeneous phase materials with high crystallinity [27]
Summary
Water contaminations by diverse kinds of organic pollutants, such as the endocrine disruptors from plastic manufacture, dyeing wastewaters, and antibiotic used in cultivation industry, have led to severe environmental and human health problems [1,2,3,4,5,6,7]. The N-molecules provide alkane/ammonia gases and the formed iron nanocrystals act as the in situ catalysts, which result in the elaborated formation of conductive carbon nanotubes and micro-/meso-porous structures via a combined process of in situ chemical vapor deposition (alkane/iron catalysts) and ammonia gas etching This unique carbonization process significantly enhances its intrinsic Fenton-like activities due to the synergic effects of the enriched Fe/Fe–Nx/pyridinic-N active species, micro-/meso-porous structures, and conductive carbon nanotubes. These carbon hybrids exhibit high removal efficiency of endocrine disruptor (bisphenol A, BPA), industrial dye (methylene blue, MB), and widely used antibiotic in cultivation industry (tetracycline, TC). This study provides a facile and controllable method for the rational design of carbon hybrids with elaborated nanostructures and increased catalytic active sites, exhibiting promising potential in Fenton-like catalysis and many other related catalytic/electrochemical reactions
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