Ag<sub>2</sub>CO<sub>3</sub>@PVDF/GO ultrafiltration membrane for water purification

FENG Xueting; YANG Sheng; WEN Chen; XIAO Changfa

doi:10.11949/j.issn.0438-1157.20161557

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Ag₂CO₃@PVDF/GO ultrafiltration membrane for water purification

更新时间：2025-12-10

- Ag₂CO₃@PVDF/GO ultrafiltration membrane for water purification
- CIESC Journal Issue 5, Pages: 2169-2176(2017)
- 作者机构：
  
  1. 天津工业大学环境与化学工程学院,天津,300387
  2. 绍兴市柯桥区污染物总量控制中心,浙江,绍兴,312020
  3. 分离膜与膜过程国家重点实验室,天津,300387
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20161557
  CLC： Q028.8
- Online First：05 May 2017，
  
  Published：05 May 2017
- 稿件说明：
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FENG Xueting, YANG Sheng, WEN Chen, et al. Ag₂CO₃@PVDF/GO ultrafiltration membrane for water purification[J]. CIESC Journal, 2017, (5): 2169-2176. DOI: 10.11949/j.issn.0438-1157.20161557.
DOI：

FENG Xueting, YANG Sheng, WEN Chen, et al. Ag₂CO₃@PVDF/GO ultrafiltration membrane for water purification[J]. CIESC Journal, 2017, (5): 2169-2176. DOI: 10.11949/j.issn.0438-1157.20161557. DOI：

摘要

以聚偏氟乙烯（PVDF）为聚合物，氧化石墨烯（GO）为添加剂，聚乙烯吡咯烷酮（PVP-K30）为致孔剂，N，N-二甲基乙酰胺（DMAc）为溶剂配制铸膜液，借助相转化法制备了PVDF/GO膜（PGM），并通过原位共沉反应在PGM表面沉积Ag2CO3得到Ag2CO3@PVDF/GO复合膜（AgC-PGM）；使用扫描电镜（SEM）、傅里叶红外光谱（FTIR）、水接触角、纯水通量、BSA截留率和三维荧光光谱（3D-EEM）考察了膜材料的形貌、亲水性、水通量和分离性。结果表明，当添加GO为0.4%（质量），AgNO3（5.0 mmol·L-1）与Na2CO3（2.5 mmol·L-1）共沉反应3次得到AgC-PGM；与PVDF膜（132.8 L·m-2·h-1）相比，AgC-PGM呈现出较高的亲水性和纯水通量（237.4 L·m-2·h-1），其纯水通量提高了78.8%，对BSA截留率稳定在75%以上；在过滤校区湖水时，AgC-PGM不仅凸显去除蛋白质污染的能力，且出水COD和UV254达到自然水体一级标准。

Abstract

A novel poly (vinylidene fluoride) (PVDF)/graphene oxide (GO) membrane with an amount of silver carbonate (Ag2CO3) deposition was prepared by both the phase-inversion method and the in situ co-precipitation reaction

respectively. The casting solution of Ag2CO3@ PVDF/GO membrane (AgC-PGM) is composed of PVDF as the polymer matrix

GO and Ag2CO3 powders as additives

PVP -K30 as the pore-forming agent

and dimethylacetamide (DMAc) as the solvent. The morphology and performances of the AgC-PGM were investigated using scanning electron microscope (SEM)

Fourier transform infrared spectroscopy (FTIR)

contact angle

the BSA rejection and cross flow filtration. Moreover

the separation effect of the lake water was also observed by three-dimensional excitation fluorescence spectrum matrix (3D-EEM). The results indicated that the AgC-PGM exhibited good hydrophilicity and filtering quality

and the pure water flux increased from 132.8 to 237.4 L·m-2·h-1

meanwhile the rejection for the BSA solution stabilized around 75% as the GO loading amount to 0.4% (mass)

AgNO3 (5.0 mmol·L-1)/Na2CO3 (2.5 mmol·L-1) precipitating 3 times. In addition

compared to the PVDF membrane

the 3D-EEM of the lake water shows a better removal effect on the protein pollutant

the removal efficiency of both CODMn and UV254 separately achieved about 95% and 83% when the AgC-PGM was used to filter the surface water continuously

which has reached to the national primary standard.

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Ag2CO3@PVDF/GO ultrafiltration membrane for water purification

DOI：10.11949/j.issn.0438-1157.20161557

摘要

Abstract

关键词

Keywords

references

Ag₂CO₃@PVDF/GO ultrafiltration membrane for water purification