Facile preparation of antifouling g-C3N4/Ag3PO4 nanocomposite photocatalytic polyvinylidene fluoride membranes for effective removal of rhodamine B

被引：47

作者：

Cui, Yanhua ^{[1
]}

Yang, Lili ^{[1
]}

Meng, Minjia ^{[2
]}

Zhang, Qi ^{[2
]}

Li, Binrong ^{[3
]}

Wu, Yilin ^{[2
]}

Zhang, Yunlei ^{[2
]}

Lang, Jihui ^{[4
]}

Li, Chunxiang ^{[2
]}

机构：

[1] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China

[2] Jiangsu Univ, Sch Chem & Chem Engn, Inst Green Chem & Chem Technol, Zhenjiang 212013, Peoples R China

[3] Jiangsu Univ, Sch Environm & Safety Engn, Zhenjiang 212013, Peoples R China

[4] Jilin Normal Univ, Changchun 130103, Jilin, Peoples R China

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2019年 / 36卷 / 02期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

g-C3N4; Ag3PO4; Heterojunction; PVDF Membranes; Removal RhB; Anti-fouling Properties; ULTRAFILTRATION MEMBRANES; TIO2; NANOPARTICLES; GRAPHENE OXIDE; DEGRADATION; G-C3N4; FABRICATION; INTEGRATION; PHOTOELECTROCATALYSIS; MICROFILTRATION; DECOMPOSITION;

D O I：

10.1007/s11814-018-0207-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A simplified strategy for facilely fabricating antifouling graphite carbon nitride/silver phosphate (g-C3N4/Ag3PO4) nanocomposite photocatalytic polyvinylidene fluoride (PVDF) porous membranes was developed for effective removal of rhodamine B (RhB). g-C3N4/Ag3PO4 heterojunction was strongly fixed to the interior of the PVDF membranes via phase inversion method. The membrane structure was analyzed by Fourier transform spectrophotometer (FT-IR). The morphology of the prepared membranes was investigated using scanning electron microscopy (SEM), EDX-mapping and atomic force microscopy (AFM), respectively. All prepared nanocomposite photocatalytic PVDF membranes exhibited a typically porous structure, and g-C3N4/Ag3PO4 nanocomposites were well dispersed inside the membranes. The obtained g-C3N4/Ag3PO4 heterojunction nanoparticle decorated PVDF membrane had a lower water contact angle of 79 degrees and higher porosity of 85% than that of other two control membranes. The nanocomposite photocatalytic PVDF porous membranes had extremely high permeation flux over 1,083 Lm(-2)h(-1), and could be used for the removal of RhB. The removal efficiency of g-C3N4/Ag3PO4-PVDF membranes towards RhB solution under visible light irradiation reached 97%, higher than that of the pure PVDF membranes (41%) and g-C3N4-PVDF membranes (85%). Remarkably, the flux performance and flux recovery ratio (FRR) of membranes revealed that the g-C3N4/Ag3PO4-PVDF membranes could recover high flux after fouling, which presented better fouling resistance. Furthermore, the fabricated antifouling g-C3N4/Ag3PO4 nanocomposite photocatalytic PVDF porous membranes exhibited excellent recyclability. Therefore, it is expected that g-C3N4/Ag3PO4-PVDF membranes could provide an energy-saving strategy for effective removal of organic dyes wastewater and have a great potential for practical wastewater treatment in the future.

引用

页码：236 / 247

页数：12

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