Characteristics of photocatalytic membrane loaded with ZnIn2S4 and its degradation performance of fluvastatin

SUN Chenxu; WANG Lei; LIU Tingting; LIU Xiu; L

doi:10.11918/j.issn.0367-6234.201808047

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Characteristics of photocatalytic membrane loaded with ZnIn2S4 and its degradation performance of fluvastatin

更新时间：2026-10-19

- Characteristics of photocatalytic membrane loaded with ZnIn2S4 and its degradation performance of fluvastatin
- Vol. 51, Issue 9, Pages: 178-185(2019)
- 作者机构：
  
  1. 西安建筑科技大学环境与市政工程学院,西安,710055
  2. School of Environmental & Municipal Engineering, Xi’an University of Architecture and Technology,Xi’an,China,710055
  3. 陕西省膜分离重点实验室(西安建筑科技大学),西安,710055
- 作者简介：
- 基金信息：
- DOI：10.11918/j.issn.0367-6234.201808047
  CLC： X52
- Published：2019
- 稿件说明：
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SUN Chenxu, WANG Lei, LIU Tingting, et al. Characteristics of photocatalytic membrane loaded with ZnIn2S4 and its degradation performance of fluvastatin[J]. 2019, 51(9): 178-185.
DOI：

SUN Chenxu, WANG Lei, LIU Tingting, et al. Characteristics of photocatalytic membrane loaded with ZnIn2S4 and its degradation performance of fluvastatin[J]. 2019, 51(9): 178-185. DOI： 10.11918/j.issn.0367-6234.201808047.

摘要

为克服传统悬浮型光催化技术因催化剂分离困难而导致的水体二次污染问题

通过悬浮过滤方式将ZnIn2S4负载在超滤膜表面得到光催化膜. 利用扫描电镜（SEM）、紫外-可见漫反射光谱分析（UV-Vis）、X射线光电子能谱分析（XPS）、X射线衍射图谱分析（XRD）对其进行表征并分析其超滤性能. 以氟伐他汀为目标污染物

采用功率500 W

光强230 W/m2的长弧氙灯为光源

考察不同负载量光催化膜在光照条件下对氟伐他汀的降解率. 结果表明

随着ZnIn2S4负载量增加

光催化膜对紫外光和可见光的响应逐渐增强

表面Zn、In、S元素特征峰响应逐渐增强

ZnIn2S4六方相型特征衍射峰逐渐增大

膜表面形成了均匀的光催化功能层

膜面亲水性增强

纯水通量衰减得到缓解

对氟伐他汀的降解率明显提高. 但是过量ZnIn2S4会在膜面发生堆叠团聚

降低催化剂利用率

进而影响催化效率. 负载量为0.2 g的光催化膜表面ZnIn2S4光催化层均匀

能有效利用光源能量

催化活性高

节省物料

在光照条件下对氟伐他汀的降解率可高达94.75%

长期运行下具有良好的光催化稳定性.

Abstract

To overcome the problem caused by the separation photocatalysts from system in the traditional photocatalytic technology

the photocatalytic membrane was prepared by filtrating suspended ZnIn2S4 on the surface of ultrafiltration membrane and was characterized by SEM

UV-Vis

XPS

XRD

and the ultrafiltration performance was also analyzed. The degradation rate of fluvastatin by photocatalytic membranes was investigated under a 500 W xenon lamp with intensity of 230 W/m2. With the increase of the photocatalyst loading

the absorbance of photocatalytic membrane in ultraviolet and visible light region increased

the characteristic peak response of Zn

In and S elements increased

the diffraction peak of ZnIn2S4 with hexagonal phase increased and the hydrophilicity increased

which indicated that formation of photocatalytic coating layer on the surface. The degradation rate of fluvastatin was also enhanced by formation of photocatalytic coating layer. However

agglomeration of excess ZnIn2S4 on the surface of the membrane leaded to reducing the utilization rate of the photocatalyst and affeced the photocatalytic efficiency. The photocatalytic coating layer of photocatalytic membrane with 0.2 g ZnIn2S4 could be effectively excited by xenon lamp and the degradation rate of fluvastatin was 94.75%.

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