Bimetallic Mn-MIL-53(Fe) Metal–Organic Framework Photo-Fenton Catalyst for Elimination of Crystal Violet in Aqueous Solution

IF 3.7 2区化学 Q2 CHEMISTRY, APPLIED

Applied Organometallic Chemistry Pub Date : 2025-10-11 DOI:10.1002/aoc.70412

Sayantan Adak, Rajib Ghosh Chaudhuri, Mrinal Kanti Mandal

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Abstract

Bimetallic Mn-doped MIL-53(Fe) metal–organic framework (MOF) has been developed to remove crystal violet (CV) efficiently from wastewater through the photo-Fenton process. The key innovation of the work lies in enhanced visible light activity, lesser H₂O₂ oxidant content, and faster removal with less sludge generation. Comprehensive characterizations revealed a lower bandgap and rapid charge separation, which reflected on the improvement of the performance of the photocatalyst. The bimetallic MOF achieved 99.01% removal of CV under the visible 100 W Xe light source with six times faster rate than the pristine MIL-53(Fe) and also 82.42% CV removal under irradiation of sunlight in 60 min at optimized conditions of 20.0 ppm dye concentration, 444 ppm H₂O₂ concentration, and 1.0 g/L catalyst loading. The composite maintained good recyclability up to five consecutive cycles with a removal of 78.89% CV. The treated effluent exhibited lower toxicity in seed germination tests, demonstrating the potentiality of Mn-doped MIL-53(Fe) as a stable and efficient catalyst for wastewater treatment.

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双金属Mn-MIL-53（Fe）金属-有机骨架光- fenton催化剂消除水溶液中结晶紫

采用光- fenton法制备了双金属mn掺杂MIL-53（Fe）金属有机骨架（MOF），可有效去除废水中的结晶紫（CV）。这项工作的关键创新在于增强可见光活性，降低H2O2氧化剂含量，更快地去除污泥产生更少。综合表征表明其具有较低的带隙和快速的电荷分离，这反映了光催化剂性能的提高。在100w Xe可见光光源下，MOF对CV的去除率达到99.01%，比原始MIL-53（Fe）快6倍；在染料浓度为20.0 ppm、H2O2浓度为444 ppm、催化剂负载为1.0 g/L的优化条件下，MOF在60 min内对CV的去除率达到82.42%。复合材料在连续5次循环中保持良好的可回收性，去除率为78.89%。经过处理的废水在种子萌发试验中表现出较低的毒性，表明mn掺杂MIL-53（Fe）作为一种稳定高效的废水处理催化剂的潜力。

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来源期刊

Applied Organometallic Chemistry 化学-无机化学与核化学

CiteScore

7.80

自引率

10.30%

发文量

408

审稿时长

2.2 months

期刊介绍： All new compounds should be satisfactorily identified and proof of their structure given according to generally accepted standards. Structural reports, such as papers exclusively dealing with synthesis and characterization, analytical techniques, or X-ray diffraction studies of metal-organic or organometallic compounds will not be considered. The editors reserve the right to refuse without peer review any manuscript that does not comply with the aims and scope of the journal. Applied Organometallic Chemistry publishes Full Papers, Reviews, Mini Reviews and Communications of scientific research in all areas of organometallic and metal-organic chemistry involving main group metals, transition metals, lanthanides and actinides. All contributions should contain an explicit application of novel compounds, for instance in materials science, nano science, catalysis, chemical vapour deposition, metal-mediated organic synthesis, polymers, bio-organometallics, metallo-therapy, metallo-diagnostics and medicine. Reviews of books covering aspects of the fields of focus are also published.