Investigation of the mechanical and physico-chemical properties of a modified PAN fibrous catalyst

Ishtchenko, V. V.; Vitkovskaya, R. F.; Huddersman, Katherine

doi:10.1016/s0926-860x(02)00512-4

Cited by 33 publications

(29 citation statements)

References 6 publications

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“…Better mechanical performance is necessary for effective use of the fibers as the supporting material for Fenton catalysts, since their mechanical performance usually plays an important role in their durability and regenerative property (Ishtchenko et al 2003b). In this work, CA-Cotton (Q Fe = 0.46 -mmol g -1 ) was first coordinated with different concentrations of Fe(III) ions, then breaking strength and elongation at break of the resulting Fe-CA-Cotton samples were measured and are presented in Fig.…”

Section: Mechanical Performancementioning

confidence: 99%

Preparation and catalytic performance of Fe(III)-citric acid-modified cotton fiber complex as a novel cellulose fiber-supported heterogeneous photo-Fenton catalyst

Dong

2015

Cellulose

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Woven cotton fabric was first modified with citric acid by a conventional pad-dry-cure process and then coordinated with Fe(III) ions to prepare a Fe(III)-modified cotton fiber complex. After the characterization by SEM, FTIR, XPS, XRD and DRS, this complex was used as a heterogeneous Fenton catalyst for the degradation of a typical textile dye, Acid Red 88, under visible irradiation. Some factors affecting the modification process, such as the citric acid and NaH 2 PO 4 concentrations as well as the curing temperature, were also investigated with respect to the coordinating performance of the modified fabric and the catalytic activity of its Fe complex. The results indicated that cotton fabric could be esterified with citric acid to impart the carboxylic groups, which successfully reacted with Fe(III) ions to form the complex. Dye degradation was significantly accelerated by the presence of the complex under visible irradiation. Increasing the concentrations of citric acid, NaH 2 PO 4 or the curing temperature enhanced the carboxyl group content of the modified fiber as well as Fe content and catalytic activity of its complex. However, an excessive amount of citric acid and NaH 2 PO 4 or a curing temperature higher than 140°C reduced the Fe content and catalytic activity of the complex. A higher initial H 2 O 2 concentration promoted the dye degradation. The excellent catalytic and mechanical performance was also found in its reuse processes.

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Section: Mechanical Performancementioning

confidence: 99%

Preparation and catalytic performance of Fe(III)-citric acid-modified cotton fiber complex as a novel cellulose fiber-supported heterogeneous photo-Fenton catalyst

Dong

2015

Cellulose

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“…6 Ozone and hypochlorite oxidations are efficient decolorizing methods, but they are undesirable because of the high cost of equipment, operating costs, and secondary pollution. [11][12][13][14] The Fe 2+ ion in Fe 3 O 4 makes this compound a very efficient catalyst for the degradation of organic pollutants and allows it to be easily separated from the reaction medium using an external magnetic eld. These techniques generate a free hydroxyl radical (cOH) that degrades most of the organic pollutants rapidly and nonselectively.…”

Section: Introductionmentioning

confidence: 99%

Preparation of copper doped magnetic porous carbon for removal of methylene blue by a heterogeneous Fenton-like reaction

et al. 2015

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High-specific-surface-area copper doped magnetic porous carbon (CuFe 2 O 4 /Cu@C) was fabricated by annealing iron, copper and 1,3,5-benzenetricarboxylic ([Cu/Fe]-BTC) metal-organic coordination polymers, which were prepared via a one-pot solvothermal method. The novel CuFe 2 O 4 /Cu@C catalyst consists of Cu (3.80%), CuFe 2 O 4 (64.84%), and C (31.36%). Scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, elemental analysis, inductively coupled plasma, Brunauer-Emmett-Teller surface area measurement, and vibrating sample magnetometer analysis were used to characterize the materials. The as-prepared materials were employed as a heterogeneous Fenton's reagent with the addition of H 2 O 2 for degradation of methylene blue (MB). The results showed that the materials effectively catalyzed H 2 O 2 to generate hydroxyl radicals (cOH). And due to their magnetism, the materials can be easily separated from wastewater to achieve repeatability. It also turned out that CuFe 2 O 4 /Cu@C had a higher catalytic activity than Fe 3 O 4 @C, which proved the importance of copper doped into the catalyst.This work indicated that porous carbon composites provide good support for the development of a highly efficient heterogeneous Fenton catalyst, which is useful for environmental pollution cleanup.

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“…Preparation procedure of the catalyst was described in detail in our previous papers. [7,8] The solution was mixed by air supplied by a compressor. The same experimental conditions but without catalyst were used as reference in each experiment.…”

Section: Catalytic Oxidation Of Effluent Under Static Conditionsmentioning

confidence: 99%

“…In our previous paper [6] we investigated the novel heterogeneous fibrous catalyst [7,8] in oxidation of Silver-Bearing (SB) photographic processing effluents from Kodak. It has been shown that COD of SB feed is reduced by more than 50% after catalytic treatment in the presence of oxidants.…”

Section: Introductionmentioning

confidence: 99%

Novel Fibrous Catalyst in Advanced Oxidation of Photographic Processing Effluents

Yang

Ishtchenko

Huddersman

2006

Journal of Environmental Science and Health, Part A

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A novel fibrous catalyst was used to destroy the pollutants in Kodak Non-Silver-Bearing (NSB) photographic processing effluents with high chemical oxygen demand (COD) value. The oxidation activity of the catalyst was evaluated in terms of COD reduction of the effluent. The effects of concentrations of hydrogen peroxide and effluent, amount of catalyst, reaction time and temperature on the COD reduction were studied. In addition, the combination of catalysis with UV treatment on the COD reduction of the effluent was also investigated. Based on the experimental results, room temperature is preferred for the catalytic oxidation of NSB effluent. It was found that COD reduction of the effluent depends on the amount of hydrogen peroxide added to the feed in relation to the mass of catalyst used. Significant COD reduction (up to 52%) is achieved after 4 hours of catalytic treatment. Extending the duration of catalysis up to 24 hours gives further slight decrease in COD value.

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Investigation of the mechanical and physico-chemical properties of a modified PAN fibrous catalyst

Cited by 33 publications

References 6 publications

Preparation and catalytic performance of Fe(III)-citric acid-modified cotton fiber complex as a novel cellulose fiber-supported heterogeneous photo-Fenton catalyst

Preparation and catalytic performance of Fe(III)-citric acid-modified cotton fiber complex as a novel cellulose fiber-supported heterogeneous photo-Fenton catalyst

Preparation of copper doped magnetic porous carbon for removal of methylene blue by a heterogeneous Fenton-like reaction

Novel Fibrous Catalyst in Advanced Oxidation of Photographic Processing Effluents

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