Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 49, Pages 42427-42435Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b15905
Keywords
organic contaminants; O-g-C3N4/GO/N-CNT heterostructured membrane; enrichment; enhanced photocatalytic performance; recyclable
Funding
- National Natural Science Foundations of China [21505057, 21605062]
- Natural Science Foundation of Jiangsu Province [BK20150227]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Brand Major of Universities in Jiangsu Province
- Top-notch Academic Programs Project of Jiangsu Higher Education Institution (TAPP)
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Organic pollutants are harmful to human health, which creates a global need for the development of novel and effective materials for efficiently removing contaminants. Accordingly, an efficient visible light-driven monolayer g-C3N4, graphene oxide, and nitrogen-doped heterostructured membrane combined with oxygen-modified carbon nanotubes (CNTs) (O-g-C3N4/GO/N-CNT) was successfully fabricated through electrostatic interactions and subsequent vacuum filtration. The results suggested that the O-g-C3N4/GO/N-CNT membrane exhibited higher degradation rate than those of O-g-C3N4/GO and pure O-g-C3N4 under visible light exposure. This enhanced photocatalytic performance was attributed to the introduction of GO and N-CNT, which acted as electronic acceptors for monolayer O-gC(3)N(4) that effectively inhibited recombination of photogenerated electron-hole pairs, thus enhancing visible light photocatalytic activity. Furthermore, the enrichment and degradation rates of O-g-C3N4/GO/N-CNT membranes were demonstrated for tetracycline hydrochloride, which were found to be 96.64 and 94.30%, respectively, and no distinct enrichment or catalytic activity reduction was observed when their reusability was measured. These results suggested that these recyclable O-g-C3N4/GO/N-CNT membranes provide a new strategy for the highly efficient removal of environmental pollutants.
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