A degradation column for organic dyes based on a composite of CuFeS2 nanocrystals and sawdust

Liang, Daxin; Li, Jian; Pang, Guangsheng

doi:10.1007/s10853-016-9844-4

Cited by 18 publications

(4 citation statements)

References 46 publications

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“…This material circumvents the problem associated with sludge formation and the need for solution pH regulation. Chalcopyrite (CuFeS 2 ), the most abundant ore of the sulfide minerals of copper, has been recently suggested in two studies, for the Fenton‐like degradation of three dyes (methylene blue, rhodamine B and rhodamine 6G). However, the literature is still limited to these reports with dyes and, to our knowledge, chalcopyrite has not been tested yet in the photo‐Fenton‐like process.…”

Section: Introductionmentioning

confidence: 99%

Mined pyrite and chalcopyrite as catalysts for spontaneous acidic pH adjustment in Fenton and LED photo‐Fenton‐like processes

Ltaïef

Pastrana‐Martínez

Ammar

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND The Fenton‐based processes have been extensively studied for the treatment of pollutants contained in olive mill wastewater (OMW). These processes have some limitations, such as the need for acidic pH control, the generation of a sludge, and the separation of soluble iron species. Mined pyrite (FeS2) and chalcopyrite (CuFeS2) avoid the problem associated with sludge formation and the acidic pH adjustment. The catalytic activity of pyrite and chalcopyrite was investigated for the Fenton and LED (light emitting diode) photo‐Fenton‐like oxidation of tyrosol (TY) and in the treatment of aqueous mixtures containing phenolic compounds. RESULTS The highest mineralization of TY (85%) and lowest Fe leaching (0.89 mg L‐1) was obtained by using chalcopyrite and the LED photo‐Fenton‐like process (0.50 mmol L‐1 of TY initial concentration and 19.0 mmol L‐1 of H2O2 stoichiometric dosage). Complete degradation of the phenolic pollutants and mineralization of 98% was also achieved. CONCLUSION Mined chalcopyrite can be an appropriate photo‐Fenton‐like catalyst in the degradation of phenolic compounds found in OMW because it can provide a high TOC removal, proper acidic pH conditions, low leaching of iron species and spontaneous formation of a small amount of H2O2. However, the catalyst stability must be improved to minimize the leaching of metals. © 2017 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Mined pyrite and chalcopyrite as catalysts for spontaneous acidic pH adjustment in Fenton and LED photo‐Fenton‐like processes

Ltaïef

Pastrana‐Martínez

Ammar

et al. 2017

J of Chemical Tech & Biotech

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“…Daxin Liang et al method was followed 14 for the preparation of CuFeS. 5mmol of CuCl₂ 2H2O was dissolved in 50ml mixed solution, 1 mmol of FeCl₂ was dissolved in 50ml mixed solution, both of which were formed by DI water, and mixing 0.01 mol of Na₂S was dissolved in 50ml and adding PVP the above solution colour changes occurring after continuous stirring at 700 rpm for 4 hours it will become the previous colour.…”

Section: Cufesmentioning

confidence: 99%

Study of Synthesis and Characterization of Pure Cus and Cufes Nanoparticles by Hydrothermal Method

Thilagavathi¹,

Venkatachalam²,

Saroja³

et al. 2023

Int J Life Sci Pharm Res

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Copper-based material has good electrical and optical properties but is not only physical properties and also good in antibacterial applications. Nano-structured CuS has potential value on high photocatalytic activity because of their suitable band gap and catalytic ability. CuS NP hydrogels had both adjustable physical properties and good injectable self-healing characteristics and excellent functionalities, concurrently including hemostatic ability, bacteria-killing capability, and cell migration and proliferation promotion. In vivo wound, healing, and histomorphological examinations of immunofluorescence staining in a mouse full-thickness wound model demonstrated good acceleration effects of these hydrogels for infected wound healing. A novel Chalcopyrite CuFeS nanocrystals are used as a Fenton reagent to degrade organic dyes without any additional source efficiently. Subsequently, the CuFeS2 nanocrystals/ biomass composite degradation column is made, continually degrading organic dyes. This paper demonstrates a comparative study of the synthesis and characterization of pure CuS and CuFeS nanoparticles using copper chloride, thiourea, ferric chloride and water solvent by straightforward hydrothermal methods. The synthesized material was characterized by an Xray diffraction (XRD), Scanning Electron Microscope (SEM), and Energy Dispersive X-ray spectrum (EDAX) techniques employed to study the nanostructure properties of the prepared sample. Crystallite size was determined by the Debye-Scherrer formula and found to be 15.5 nm and 20.55 nm, respectively. The EDAX spectrum showed a clear peak of present elements. An SEM image shows the morphology of the nanostructures. Optical analysis was done with UV and FTIR techniques. The pure CuS and CuFeS synthesized Tauc Relation and calculated nanomaterials bandgap came out to be 4.6eV and 4.4 eV, respectively.

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“…Numerous studies have reported on photo-Fenton reagents for dealing with different organic pollutants in batch experiments. [12][13][14][15][16] Among these, recently, there has been growing interest in the use of nanoparticles as photocatalytic agents [17][18][19][20] Heteropoly acids (HPAs) and their derivatives represent an increasingly important class of eco-catalysts for many organic reactions. 21 HPAs are formed by inorganic metal-oxygen cluster anions and compounds with strong Brønsted acid characteristics and unique redox properties.…”

Section: Introductionmentioning

confidence: 99%

Preparation and photocatalytic performance of tungstovanadophosphoric heteropoly acid salts

Xue

Zhou

et al. 2019

RSC Adv.

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A degradation column for organic dyes based on a composite of CuFeS2 nanocrystals and sawdust

Cited by 18 publications

References 46 publications

Mined pyrite and chalcopyrite as catalysts for spontaneous acidic pH adjustment in Fenton and LED photo‐Fenton‐like processes

Mined pyrite and chalcopyrite as catalysts for spontaneous acidic pH adjustment in Fenton and LED photo‐Fenton‐like processes

Study of Synthesis and Characterization of Pure Cus and Cufes Nanoparticles by Hydrothermal Method

Preparation and photocatalytic performance of tungstovanadophosphoric heteropoly acid salts

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