Ag-functionalized Bi2W(Mo)O6/PVDF membrane for photocatalytic water treatment

IF 3.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Materials Science Pub Date : 2021-07-23 DOI:10.1007/s10853-021-06343-w

H. Mortazavi Milani, A. A. Sabbagh Alvani, R. Salimi, H. Sameie, D. Poelman

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引用次数: 10

Abstract

Costly and time-consuming recovery of photocatalysts from treated water is one of the main challenges for the photocatalysis process. In this regard, an Ag-functionalized Bi₂W(Mo)O₆ photocatalyst was successfully synthesized via a cetyltrimethylammonium bromide (CTAB)-assisted hydrothermal method, immobilized on a polyvinylidene fluoride (PVDF) membrane and subsequently used for photocatalytic water treatment. The flower-like Ag-decorated Bi₂W(Mo)O₆ photocatalyst revealed a significant enhancement (62%) in the photocatalytic degradation efficiency compared to the unmodified pure Bi₂WO₆ (19%) due to the synergic contribution of the flower-like morphology with higher surface area, decrease in band gap by Mo doping and Ag-induced surface plasmon resonance (SPR) effects. In order to immobilize the photocatalyst, the Ag-decorated Bi₂W(Mo)O₆ nanoparticles were distributed uniformly on the surface of the PVDF membrane. The results illustrate that the as-prepared Ag-loaded Bi₂W(Mo)O₆/PVDF composite membrane effectively degrades the organic molecules (51%) without any additional process for the photocatalyst separation, confirming its potential as a beneficial environmental-friendly material for water treatment applications.

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ag功能化Bi2W(Mo)O6/PVDF光催化水处理膜

从处理过的水中回收光催化剂成本高、耗时长是光催化工艺面临的主要挑战之一。为此，通过十六烷基三甲基溴化铵(CTAB)辅助水热法成功合成了ag功能化的Bi2W(Mo)O6光催化剂，并将其固定在聚偏氟乙烯(PVDF)膜上，随后用于光催化水处理。与未修饰的纯Bi2WO6相比，花状ag修饰的Bi2W(Mo)O6光催化剂的光催化降解效率显著提高(62%)，这是由于更高表面积的花状形貌、Mo掺杂导致的带隙减小以及ag诱导的表面等离子体共振(SPR)效应的协同作用。为了固定光催化剂，将ag修饰的Bi2W(Mo)O6纳米粒子均匀分布在PVDF膜表面。结果表明，制备的负载ag的Bi2W(Mo)O6/PVDF复合膜可有效降解有机分子(51%)，无需额外的光催化剂分离过程，证实了其作为一种有益的环境友好型水处理材料的潜力。图形抽象

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.