AI Article Synopsis
- - The study introduces CuO hollow nanospheres (CuO-HNs) with special {1 1 0} and {1 1 1} facets designed for efficiently removing high concentrations of pollutants from water.
- - These nanospheres leverage active surface sites with dangling Cu atoms to interact effectively with negatively charged pollutants, while their hollow structure maximizes the use of these sites.
- - The small CuO-HNs (~100 nm) can rapidly adsorb and degrade up to 90% and 92% of methyl blue dye in just 10 minutes under visible light, demonstrating their potential for practical applications in environmental remediation.
Article Abstract
We report the well-designed active {1 1 0} and {1 1 1} faceted CuO hollow nanospheres (CuO-HNs) for the quick removal of the high concentration pollutants in water. For the first time, these CuO-HNs combine the advantages of the active facets, hollow structure and nanostructures. The abundance of dangling Cu atoms in two active facets results in positively charged surface to effectively react with the negatively charged pollutants. The hollow structure provides the opportunity to take full use of these active sites. Consequently, the active faceted CuO-HNs demonstrate excellent adsorption and photodegradation capacities for high concentrated anionic dyes. The smallest CuO-HNs (~100 nm) can adsorb ~90% of methyl blue (MB) (100 mg L) in 10 min and degrade ~92% of MB (100 mg L) in 10 min under visible-light. In particular, a film consisting of the smallest CuO-HNs can quickly remove high concentrated organic dyes and be reused after solar light irradiation for 10 min in air, showing the promising practical application for the removal of organic pollutants.
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| http://dx.doi.org/10.1016/j.jcis.2020.01.022 | DOI Listing |
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