A multi-dye@MOF composite boosts highly efficient photodegradation of an ultra-stubborn dye reactive blue 21 under visible-light irradiation†,Journal of Materials Chemistry A

当前位置： X-MOL 学术 › J. Mater. Chem. A › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A multi-dye@MOF composite boosts highly efficient photodegradation of an ultra-stubborn dye reactive blue 21 under visible-light irradiation†
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2018-01-02 00:00:00 , DOI: 10.1039/c7ta10184h
Qing Li _{1,

2,

3,

4,

5} , Zeng-Lu Fan _{6,

7,

8,

9} , Dong-Xu Xue _{1,

2,

3,

4,

5} , Yu-Feng Zhang _{1,

2,

3,

4,

5} , Zong-Hui Zhang _{1,

2,

3,

4,

5} , Qian Wang _{1,

2,

3,

4,

5} , Hua-Ming Sun _{1,

2,

3,

4,

5} , Ziwei Gao _{1,

2,

3,

4,

5} , Junfeng Bai _{1,

2,

3,

4,

5}

Affiliation

Reactive blue 21 (RB21), a phthalocyanine dye, is frequently used in the textile industry and has been rarely researched for decontamination in wastewater. Moreover, no existing approach exhibits effective removal capability. It is therefore highly imperative to quest for alternative solution to address this problem. MOFs have recently appeared as new functional materials for environmental remediation due to their intrinsic features of high porosities and light response. Although a few MOFs are inherently responsive to visible light, most MOF materials can mainly harvest UV light; this dramatically limits the utilization of solar energy. Inspired by our previous results that the dye@MOF composite could effectively photodegrade organic dyes under visible-light irradiation, in the current study, three yellow/red/blue cationic dyes were successfully assembled into an identical MOF host singly, dually, and triply; this led to the formation of seven new multi-dye@MOF composites. Systematic investigations reveal that the seven composites can comparatively photodegrade RB21 under visible-light irradiation. Among them, the composite triple-dye@MOF displays the most efficient performance of 95.36%, which is far superior to that of the commercial P25. This finding may open up a new avenue to construct novel composites towards addressing some unresolved environmental issues, i.e. the decontamination of ultra-stubborn dyes in an aqueous solution.

中文翻译：

多染料@MOF复合材料可促进可见光照射下超顽固染料活性蓝21的高效光降解†

活性花蓝21（RB21）是一种酞菁染料，常用于纺织工业，很少用于废水中的去污研究。而且，没有现有的方法展现出有效的去除能力。因此，迫切需要寻求替代解决方案来解决这个问题。MOF由于其高孔隙率和光响应的固有特征，最近已成为环境修复的新功能材料。尽管一些MOF固有地对可见光作出响应，但是大多数MOF材料可以主要收集紫外线。这极大地限制了太阳能的利用。受我们先前研究结果的启发，在当前的研究中，dye @ MOF复合材料可以在可见光照射下有效地光降解有机染料，将三种黄色/红色/蓝色阳离子染料分别，双重和三次成功地组装到相同的MOF主体中；这导致了七种新型多染料@MOF复合材料的形成。系统研究表明，这七种复合材料在可见光照射下可以相对光降解RB21。其中，复合三染料@MOF表现出最有效的性能，为95.36％，远远优于商用P25。这一发现可能会开辟一条新的途径来构建新颖的复合材料，以解决一些尚未解决的环境问题，复合三染料@MOF的最有效性能为95.36％，远远优于商用P25。这一发现可能会为构建新型复合材料开辟一条新途径，以解决一些尚未解决的环境问题，复合三染料@MOF的最有效性能为95.36％，远远优于商用P25。这一发现可能会开辟一条新的途径来构建新颖的复合材料，以解决一些尚未解决的环境问题，即在水溶液中对超顽固染料进行去污。

更新日期：2018-01-02

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11