Abstract
Industrial effluents often contain mixed metal ions and dyes, and it is difficult to efficiently remove both types of contaminants simultaneously. Here, MIL-125-NH2@Ag/AgCl composites were for the first time developed through a facile deposition-photoreduction method for simultaneously removing Cr(VI)/Rhodamine B (RhB)/Malachite Green (MG) ternary system pollutants under visible-light irradiation. The capacities of Cr(VI) reduction dramatically increased to 98.4% in the coexistence of RhB and MG compared to that of binary (Cr(VI)/RhB (69.6%) or Cr(VI)/MG (67.5%)) and single Cr(VI) (29%) systems. In the meantime, the degradation efficiencies of dyes especially RhB in the ternary system were also improved compared to that of their individual systems. On the grounds of all the experimental results, it can be concluded that the efficient light-harvesting and electrons migration in MIL-125-NH2@Ag/AgCl and the synergistic effect of redox reactions between Cr(VI) and dyes hinder the recombination of photo-induced electron-hole pairs, which are responsible for their high photocatalytic activity to eliminate the mixed pollutants. This study provides a new route to construct high-performance photocatalysts for the practical treatment of wastewater containing mixed pollutants.
| Original language | English |
|---|---|
| Article number | 125197 |
| Number of pages | 9 |
| Journal | Chemosphere |
| Volume | 242 |
| DOIs | |
| Publication status | Published - Mar 2020 |
Keywords
- MIL-125-NH@Ag/AgCl
- Photocatalysis
- Simultaneous removal
- Ternary system pollutants
Cite this
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Integration of plasmonic effect into MIL-125-NH2 : an ultra-efficient photocatalyst for simultaneous removal of ternary system pollutants. / Qiu, Jianhao; Li, Ming; Wang, Huanting; Yao, Jianfeng.
In: Chemosphere, Vol. 242, 125197, 03.2020.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Integration of plasmonic effect into MIL-125-NH2
T2 - an ultra-efficient photocatalyst for simultaneous removal of ternary system pollutants
AU - Qiu, Jianhao
AU - Li, Ming
AU - Wang, Huanting
AU - Yao, Jianfeng
PY - 2020/3
Y1 - 2020/3
N2 - Industrial effluents often contain mixed metal ions and dyes, and it is difficult to efficiently remove both types of contaminants simultaneously. Here, MIL-125-NH2@Ag/AgCl composites were for the first time developed through a facile deposition-photoreduction method for simultaneously removing Cr(VI)/Rhodamine B (RhB)/Malachite Green (MG) ternary system pollutants under visible-light irradiation. The capacities of Cr(VI) reduction dramatically increased to 98.4% in the coexistence of RhB and MG compared to that of binary (Cr(VI)/RhB (69.6%) or Cr(VI)/MG (67.5%)) and single Cr(VI) (29%) systems. In the meantime, the degradation efficiencies of dyes especially RhB in the ternary system were also improved compared to that of their individual systems. On the grounds of all the experimental results, it can be concluded that the efficient light-harvesting and electrons migration in MIL-125-NH2@Ag/AgCl and the synergistic effect of redox reactions between Cr(VI) and dyes hinder the recombination of photo-induced electron-hole pairs, which are responsible for their high photocatalytic activity to eliminate the mixed pollutants. This study provides a new route to construct high-performance photocatalysts for the practical treatment of wastewater containing mixed pollutants.
AB - Industrial effluents often contain mixed metal ions and dyes, and it is difficult to efficiently remove both types of contaminants simultaneously. Here, MIL-125-NH2@Ag/AgCl composites were for the first time developed through a facile deposition-photoreduction method for simultaneously removing Cr(VI)/Rhodamine B (RhB)/Malachite Green (MG) ternary system pollutants under visible-light irradiation. The capacities of Cr(VI) reduction dramatically increased to 98.4% in the coexistence of RhB and MG compared to that of binary (Cr(VI)/RhB (69.6%) or Cr(VI)/MG (67.5%)) and single Cr(VI) (29%) systems. In the meantime, the degradation efficiencies of dyes especially RhB in the ternary system were also improved compared to that of their individual systems. On the grounds of all the experimental results, it can be concluded that the efficient light-harvesting and electrons migration in MIL-125-NH2@Ag/AgCl and the synergistic effect of redox reactions between Cr(VI) and dyes hinder the recombination of photo-induced electron-hole pairs, which are responsible for their high photocatalytic activity to eliminate the mixed pollutants. This study provides a new route to construct high-performance photocatalysts for the practical treatment of wastewater containing mixed pollutants.
KW - MIL-125-NH@Ag/AgCl
KW - Photocatalysis
KW - Simultaneous removal
KW - Ternary system pollutants
UR - http://www.scopus.com/inward/record.url?scp=85074008406&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2019.125197
DO - 10.1016/j.chemosphere.2019.125197
M3 - Article
VL - 242
JO - Chemosphere
JF - Chemosphere
SN - 0045-6535
M1 - 125197
ER -