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论文类型： 期刊论文

发表时间： 2017-11-01

发表刊物： JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录刊物： Scopus、SCIE、EI、PubMed

卷号： 505

页面范围： 341-351

ISSN号： 0021-9797

关键字： Graphene oxide (GO); Copper oxide; Hydrophilic modification; Antibacterial activity; Antifouling

摘要： Innovation and effective wastewater treatment technology is still in great demand given the emerging contaminants frequently spotted from the aqueous environment. By blending with poly (vinylidene fluoride) (PVDF), the strong hydrophilic graphene oxide (GO) and antibacterial copper oxide (CuxO) were used as nanofillers to develop the novel, highly antifouling composite membranes via phase inversion process in our latest work. The existence and dispersion of GO and CuxO posed a significant role on morphologies, structures, surface composition and hydrophilicity of the developed composite membranes, confirmed by SEM, TEM, FTIR and XPS in depth characterization. The SEM images showed that the modified membranes presented a lower resistant structure with developed finger-like macrovoids and thin walled even interconnected sponge-like pores after adding nanofillers, much encouraging membrane permeation. The XPS results revealed that CuxO contained Cu2O and CuO in the developed membrane and the Cu2O nanoparticles were dominant accounting for about 79.3%; thus the modified membrane specifically exhibited an efficient antibacterial capacity. Due to the hydrophilic and bactericidal membrane surface, the composite membranes demonstrated an excellent antifouling performance, including higher flux recovery rate, more resistant against accumulated contaminants and lower filtration resistance, especially lower irreversible resistance. The antifouling property, especially anti-irreversible fouling, was significantly improved, showing a significant engineering potential. (C) 2017 Elsevier Inc. All rights reserved.