A Novel Multifunctional Photocatalytic Separation Membrane Based on Single-Component Seaweed-Like g-C_3N_4

Liuxin Li; Chunjia Luo; Xushuai ChenNa ChuLe LiMin ChaoLuke Yan

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A Novel Multifunctional Photocatalytic Separation Membrane Based on Single-Component Seaweed-Like g-C_3N_4

机译：A Novel Multifunctional Photocatalytic Separation Membrane Based on Single-Component Seaweed-Like g-C_3N_4

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Multifunctional separation membrane is usually realized by multi-componentcollaborative construction, which makes the membrane preparation methodcomplicated and uncontrollable. Herein, a novel multifunctional photocatalyticseparation membrane is prepared by vacuum self-assembly of singleseaweed-like g-C_3N_4 photocatalyst. The seaweed-like g-C_3N_4 gives membranecertain roughness, large specific surface area, excellent hydrophilicity andabundant transport channels. Through a systematic study, the membraneexhibits excellent separation of five oil-in-water emulsions with a maximumflux of 3114.0 ± 113.0 L m~(?2) h~(?1) bar?1 for 1, 2-dichloroethane-in-water (Dc/W)emulsion and a maximum efficiency of 97.4 ± 0.1% for chloroform-in-water(C/W) emulsion. In addition, the seaweed-like g-C_3N_4 with large specificsurface area and narrow bandgap render excellent visible light absorptioncharacteristics and accelerate e~-h~+ pairs transport rate, giving the membraneexcellent photocatalytic degradation and antibacterial properties. Themembrane shows good degradation for eight different pollutants, amongwhich the degradation effect for rhodamine B (RhB), methylene blue (MB),and crystal violet (CV) were ≈100%. The antibacterial efficiency against E. coliand S. aureus is also close to 100%. After 35 consecutive separations ofC/W emulsion and 10 consecutive degradations of RhB, the membrane stillmaintains excellent separation performance. This long-lasting multifunctionalseparation membrane exhibits broad application prospects in complex wastewaterpurification.

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来源
《Advanced functional materials》 |2023年第23期|2213974.1-2213974.10|共10页
作者
Liuxin Li; Chunjia Luo; Xushuai ChenNa ChuLe LiMin ChaoLuke Yan;
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Polymer Materials & Engineering DepartmentSchool of Materials Science & EngineeringChang’an UniversityXi’an 710064, P.R. China;

Polymer Materials & Engineering DepartmentSchool of Materials Science & EngineeringChang’an UniversityXi’an 710064, P.R. China Key Laboratory of Road Construction Technology and EquipmentMOEChang’an UniversityXi’an 710064, P.R. China;

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正文语种英语
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morphological control; photocatalysis; seaweed-like g-C_3N_4; water purification;

A Novel Multifunctional Photocatalytic Separation Membrane Based on Single-Component Seaweed-Like g-C_3N_4

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