Journal
NANOMATERIALS
Volume 12, Issue 16, Pages -Publisher
MDPI
DOI: 10.3390/nano12162821
Keywords
supramolecule; mesoporous nitrogen-rich carbon; carbon fixation; electro-Fenton; organic pollutant degradation
Categories
Funding
- National Natural Science Foundation of China [U1804255]
- Key Research and Development and Promotion Projects in Henan Province [222102520038, 212102210651, 222102320147]
- Key Scientific Research Project of Henan Province Higher Education of China [21A430020]
- Scientific and Technological Research Project of Xinxiang, China [GG2020020]
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In this study, carbon materials with high activity and selectivity were synthesized using a supramolecular self-assembly strategy. These materials showed excellent mineralization performance in the treatment of various organic pollutants, highlighting the importance of supramolecular-derived carbon materials in EF degradation.
The electro-Fenton (EF) process is regarded as an efficient and promising sewage disposal technique for sustainable water environment protection. However, current developments in EF are largely restricted by cathode electrocatalysts. Herein, a supramolecular self-assembly strategy is adopted for synthetization, based on melamine-cyanuric acid (MCA) supramolecular aggregates integrated with carbon fixation using 5-aminosalicylic acid and zinc acetylacetonate hydrate. The prepared carbon materials characterize an ordered lamellar microstructure, high specific surface area (595 m(2) g(-1)), broad mesoporous distribution (4 similar to 33 nm) and high N doping (19.62%). Such features result from the intrinsic superiority of hydrogen-bonded MCA supramolecular aggregates via the specific molecular assembly process. Accordingly, noteworthy activity and selectivity of H2O2 production (similar to 190.0 mg L-1 with 2 h) are achieved. Excellent mineralization is declared for optimized carbon material in several organic pollutants, namely, basic fuchsin, chloramphenicol, phenol and several mixed triphenylmethane-type dyestuffs, with total organic carbon removal of 87.5%, 74.8%, 55.7% and 54.2% within 8 h, respectively. This work offers a valuable insight into facilitating the application of supramolecular-derived carbon materials for extensive EF degradation.
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