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Three-Dimensionally Printed Zero-Valent Copper with Hierarchically Porous Structures as an Efficient Fenton-like Catalyst for Enhanced Degradation of Tetracycline.
- Source :
- Catalysts (2073-4344); Feb2023, Vol. 13 Issue 2, p446, 13p
- Publication Year :
- 2023
-
Abstract
- Three-dimensionally printed materials show great performance and reliable stability in the removal of refractory organic pollutants in Fenton-like reactions. In this work, hierarchically porous zero-valent copper (3DHP-ZVC) was designed and fabricated via 3D printing and applied as a catalyst for the degradation of tetracycline (TC) through heterogeneous Fenton-like processes. It was found that the 3DHP-ZVC/H<subscript>2</subscript>O<subscript>2</subscript> system could decompose over 93.2% of TC within 60 min, which is much superior to the homogeneous Cu<superscript>2+</superscript>/H<subscript>2</subscript>O<subscript>2</subscript> system under similar conditions. The leaching concentration of Cu<superscript>2+</superscript> ions in the 3DHP-ZVC/H<subscript>2</subscript>O<subscript>2</subscript> system is 2.14 times lower than that in the Cu powder/H<subscript>2</subscript>O<subscript>2</subscript> system in a neutral environment, which could be ascribed to the unique hierarchically porous structure of 3DHP-ZVC. Furthermore, 3DHP-ZVC exhibited compelling stability in 20 consecutive cycles. The effects of co-existing inorganic anions, adaptability, and pH resistance on the degradation of TC were also investigated. A series of experiments and characterizations revealed that Cu<superscript>0</superscript> and superoxide radicals as reducing agents could facilitate the cycling of Cu(II)/Cu(I), thus enhancing the generation of hydroxyl radicals to degrade TC. This study provides new insights into employing promising 3D printing technology to develop high-reactivity, stable, and recycling-friendly components for wastewater treatment. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20734344
- Volume :
- 13
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Catalysts (2073-4344)
- Publication Type :
- Academic Journal
- Accession number :
- 162086297
- Full Text :
- https://doi.org/10.3390/catal13020446