Engineering Research Center for Clean Production of Textile Dyeing and Printing

Wuhan, China

Engineering Research Center for Clean Production of Textile Dyeing and Printing

Wuhan, China
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Zhang Y.,Wuhan Textile University | Liu Q.,Wuhan Textile University | Jing H.,Wuhan Textile University | Cai Y.,Engineering Research Center for Clean Production of Textile Dyeing and Printing | And 3 more authors.
Journal of Coordination Chemistry | Year: 2017

Two new Schiff base silver(I) complexes, {[Ag(L1)][H2O]}∞ (1) and {[Ag(L2)][H2O]}∞ (2), where L1 = 4-((2-diethylaminoethylimino)methyl)phenecarboxylate and L2 = 4-([3-(morpholin-4-yl)propyl]iminomethyl)phenecarboxylate, have been synthesized and characterized. X-ray crystallographic analysis reveals that silver ions in 1 are bridged by L1 to form a one-dimensional zigzag chain, while three silver ions in 2 are linked by L2 to produce a two-dimensional coordination polymer. Guest water molecules in 1 generate a one-dimensional hydrogen-bonded chain. Both 1 and 2 offer high antibacterial activity against Gram-positive bacteria Staphylococcus aureus with MIC values of 0.26 and 0.24 mM and to exhibit good inhibitory activity against urease with the respective IC50 values of 3.5 ± 0.1 and 3.8 ± 0.2 μM. © 2017 Informa UK Limited, trading as Taylor & Francis Group


Fang J.,Wuhan Textile University | Li J.,Wuhan Textile University | Gao L.,Wuhan Textile University | Jiang X.,Wuhan Textile University | And 4 more authors.
Journal of Colloid and Interface Science | Year: 2017

The octahedral molecular sieve manganese oxide (OMS-2) and graphite (Gt) composites (OMS-2/Gt) were prepared by a facile refluxing approach. The structure and morphology of the obtained materials were systematically investigated. The results reveal that OMS-2 nanofibers are uniformly dispersed on the surface of Gt, and the ratio of Mn3+ species in OMS-2 increases lineally with the increase of Gt dosage. The catalytic activity of OMS-2/Gt was evaluated by the degradation of Acid Orange 7 (AO7) in the presence of peroxymonosulfate (PMS). It is found that the OMS-2/Gt composites show enhanced catalytic performance with the degradation rate lineally correlated with the content of OMS-2 in the catalyst, and even with the ratio of Mn3+/Mn4+. XPS and radical scavenger experiments further indicated that the oxidation of Mn3+ by PMS system occurs in the system with the formation of hydroxyl radicals contributed to the dye degradation. The catalysts also exhibit good stability and reusability during consecutive cycles. Thus, the environmental friendly OMS-2/Gt composites with low cost, facile synthesis process and high efficiency are very promising catalysts for PMS activation and pollutants degradation. © 2017 Elsevier Inc.


Li J.,Wuhan Textile University | Ye P.,Wuhan Textile University | Fang J.,Wuhan Textile University | Wang M.,Wuhan Textile University | And 4 more authors.
Applied Surface Science | Year: 2017

Manganese oxide octahedral molecular sieves (OMS-2) supported CuO catalysts were synthesized, characterized and used in the removal of Acid Orange 7 (AO7) in aqueous solution by an oxidation process involving peroxymonosulfate (PMS). It was found that the CuO species were highly dispersed in OMS-2 with a high ratio of easily reduced surface oxygen species. The synergetic effect between CuO and OMS-2 significantly improved the dye degradation rate and catalytic stability, compared with CuO, OMS-2 and supported CuO on other materials. About 97% of the dye was removed within 15 min at neutral solution pH by using 0.2 g/L of CuO/OMS-2 and PMS. The effect of initial solution pH, PMS concentration, reaction temperature and CuO content in the composites on AO7 degradation was also investigated. Mechanism study indicated that SO4 −[rad] radicals generated from the interaction between PMS and Mn and Cu species with different oxidation states, mainly accounted for the degradation. © 2017 Elsevier B.V.


Li J.,Wuhan Textile University | Fang J.,Wuhan Textile University | Ye P.,Wuhan Textile University | Wu D.,Wuhan Textile University | And 4 more authors.
Journal of Photochemistry and Photobiology A: Chemistry | Year: 2017

Graphitic carbon nitride (g-C3N4) can be used as catalysts for peroxymonosulfate (PMS) activation and pollutants degradation under visible light irradiation. However, its efficiency is relative slow in comparison with copper and cobalt oxide catalysts. In this study, iron oxide modified g-C3N4 catalysts (Fe2O3/g-C3N4) were prepared by a simple thermal treatment method using urea and ferric nitrate as precursors. The materials were thoroughly characterized by a variety of techniques and their activity was evaluated for degradation of Acid orange 7 (AO7) and other dyes under visible light irradiation in the presence of PMS, with nearly complete degradation of all the pollutants obtained within 40 min. The prepared Fe2O3/g-C3N4 catalysts were also proved more efficient than the single components and were stable during multiple runs. The enhanced photoactivity can be attributed to 1) the higher surface area, supplying more surface active sites and making charge carriers transport easier; 2) improved optical properties with narrower band-gap energies and increased visible light absorption efficiency, and 3) the participation of iron species in the reaction with production of more radicals. Thus, the low cost Fe2O3/g-C3N4 composites with a facile synthesis process are very promising photocatalysts for PMS activation and pollutants degradation. © 2017 Elsevier B.V.


Wei M.,Wuhan Textile University | Gao L.,Wuhan Textile University | Li J.,Wuhan Textile University | Fang J.,Wuhan Textile University | And 4 more authors.
Journal of Hazardous Materials | Year: 2016

Graphitic carbon nitride supported on activated carbon (g-C3N4/AC) was prepared through an in situ thermal approach and used as a metal free catalyst for pollutants degradation in the presence of peroxymonosulfate (PMS) without light irradiation. It was found that g-C3N4 was highly dispersed on the surface of AC with the increase of surface area and the exposition of more edges and defects. The much easier oxidation of C species in g-C3N4 to CO was also observed from XPS spectra. Acid Orange 7 (AO7) and other organic pollutants could be completely degraded by the g-C3N4/AC catalyst within 20 min with PMS, while g-C3N4+PMS and AC+PMS showed no significant activity for the reaction. The performance of the catalyst was significantly influenced by the amount of g-C3N4 loaded on AC; but was nearly not affected by the initial solution pH and reaction temperature. In addition, the catalysts presented good stability. A nonradical mechanism accompanied by radical generation (HO and SO4 -) in AO7 oxidation was proposed in the system. The CO groups play a key role in the process; while the exposure of more N-(C)3 group can further increase its electron density and basicity. This study can contribute to the development of green materials for sustainable remediation of aqueous organic pollutants. © 2016 Elsevier B.V.


Dong H.,Wuhan Textile University | Wei M.,Wuhan Textile University | Li J.,Wuhan Textile University | Fang J.,Wuhan Textile University | And 4 more authors.
RSC Advances | Year: 2016

A graphitic carbon nitride-containing MCM-41 catalyst (g-C3N4/MCM-41) was prepared through an in situ thermal approach and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, N2 adsorption-desorption and X-ray photoelectron spectroscopy. It was found that Acid Orange 7 (AO7) and other five organic dyes can be completely degraded by the g-C3N4/MCM-41 catalyst within 30 min in the presence of peroxymonosulfate (PMS), while g-C3N4 + PMS and MCM-41 + PMS show nearly no activity. A non-radical pathway accompanied by radical generation in PMS activation and AO7 oxidation is proposed. The oxidized carbon species N-C-O on g-C3N4 with strong electron density plays a key role in the reaction, while the large surface area of the catalyst can also efficiently enhance the accessibility of catalytic active sites. Though the reusability of the g-C3N4/MCM-41 catalyst is not very good as that of metal oxide catalysts, its activity can be recovered by KOH treatment. The study can broaden the application of g-C3N4 in the area of wastewater treatment. © 2016 The Royal Society of Chemistry.


Li H.,Wuhan Textile University | Li H.,Engineering Research Center for Clean Production of Textile Dyeing and Printing | Xiong Z.,Engineering Research Center for Clean Production of Textile Dyeing and Printing | Dai X.,Engineering Research Center for Clean Production of Textile Dyeing and Printing | Zeng Q.,Engineering Research Center for Clean Production of Textile Dyeing and Printing
Dyes and Pigments | Year: 2012

In order to investigate the impact of perspiration on photo-induced chemical reaction of azo dyes and the carcinogenic aromatic amine products produced from the reaction, we have carried out experimental studies on the photochemical reaction of C.I. Reactive Red 2 mixed with American Association of Textile Chemists and ColoristsAATCCstandard artificial perspiration. UV-vis spectroscopic technique was employed to monitor the reaction processes, and the reaction products were analyzed by hollow fiber protected liquid-liquid-liquid phase micro-extraction with capillary electrophoresisHF-LLLME-CE). The results showed that perspiration had remarkable influence on the photochemical reaction of azo dyes. Aromtic amines formed during the photochemical process as a result of reduction of azo dyes by organic components in perspiration. The HF-LLLME-CE methodology was validated in analyzing aromatic amines produced from the photochemical degradation of azo dye C.I. Reactive Red 2 and C.I. Acid Red 35 mixed with artificial perspiration. © 2011 Elsevier Ltd. All rights reserved.


Luo Y.,Nanjing University | Zhang S.,Nanjing University | Liu Z.-J.,Nanjing University | Chen W.,Nanjing University | And 4 more authors.
European Journal of Medicinal Chemistry | Year: 2013

A series of novel 1,3,4-thiadiazole derivatives bearing 1,2,4-triazolo[1,5-a]pyrimidine moiety were synthesized by the method of splicing active substructures. Among these derivatives, compounds 12, 13, 15-22 and 24-31 were firstly reported. All the compounds were assayed for antimicrobial activities against five fungi strains and four bacteria strains. The preliminary results indicated that compounds 25 and 28-31 showed good antifungal activities against Physaclospora piricola and Rhizoctonia solani. Compound 26 exhibited good antifungal activities against Cercospora beticola and R. solani. Most of the compounds showed better antibacterial activities against Gram-negative bacteria strains than Gram-positive bacteria strains. Compounds 25 and 28 showed the best activities against Pseudomonas fluorescence while compounds 30-31 showed good activities against Escherichia coli. © 2013 Elsevier Masson SAS. All rights reserved.


Fu J.,Nanjing University | Pan F.,Nanjing University | Pan F.,Engineering Research Center for Clean Production of Textile Dyeing and Printing | Song S.,Nanjing University | And 4 more authors.
Environmental Earth Sciences | Year: 2013

To comparatively study the biodegradation of phthalic acid esters (PAEs) in sewage sludge by composting with pig manure or with rice straw, four composting modes were designed: Mode 1 (sewage sludge + pig manure + intermittent aeration), Mode 2 (sewage sludge + pig manure + continuous aeration), Mode 3 (sewage sludge + rice straw + intermittent aeration) and Mode 4 (sewage sludge + rice straw + continuous aeration). Physicochemical parameters of composts were measured according to standard methods and PAEs were analyzed by gas chromatography coupled with mass spectrometry (GC/MS). The biodegradation of each PAE was also discussed. The results showed that Mode 1 was the best mode to biodegrade PAEs, which might be related to the wide class of indigenous microbial communities in pig manure and high efficiency of intermittent ventilation for providing oxygen. During the biodegradation process, di(2-ethylhexyl) phthalate was the most abundant and decisive for the removal of total PAEs. It showed a first-order kinetic degradation model. In conclusion, composting with pig manure could be suggested as an effective detoxification process for the removal of PAEs from sewage sludge, providing a safe end product. © 2012 Springer-Verlag.


Chen W.,Engineering Research Center for Clean Production of Textile Dyeing and Printing | Chen W.,Nanjing University | Xiang F.,Huanggang Normal University | Fu J.,Nanjing University | And 3 more authors.
Asian Journal of Chemistry | Year: 2011

In order to search novel fungicides with higher activity, 28 new 1,2,4-triazolo[1,5-α]pyrimidine derivatives bearing 1,2,4-triazole heterocycle were synthesized. Their structures were characterized by 1H NMR spectroscopy, mass spectrometry and elemental analyses. With triadimefon, validamycin and carbendazim as positive controls, the antifungal activities of 28 compounds against Fusarium oxysporum f. sp. vasinfectum, Gibberella sanbinetti, Cercospora beticola Sacc., Physaclospora piricola and Rhizoctonia solani were evaluated. Compound 2-[(5-(2,6- difluorobenzylthio)-4- phenyl-4H-1,2,4-triazol-3-yl)methylthio]-5,7-dimethyl[1,2,4]triazolo[1, 5-α]pyrimidine (19) showed potent antifungal activities against G. sanbinetti, C. beticola, P. piricola and R. solani. On the basis of the biological results, structure-activity relationships of these compounds were also discussed.

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