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Zhang Y.,Suzhou University of Science and Technology | Han Y.,Suzhou University of Science and Technology | Wei J.,Suzhou University of Science and Technology | Wang D.,Suzhou University of Science and Technology | Wang D.,Jiangsu Key Laboratory of Environmental Functional Materials
Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae | Year: 2014

In this study, alkali-modified water treatment sludge was prepared by impregnated in NaOH. The obtained adsorbent was further applied to remove NH4 + excessive from water. The adsorption efficiency was influenced by simulated wastewater pH, the dosage, initial NH4 + concentration, the temperature and time of adsorption, which were investigated in detail. It was indicated that in weak acid and neutral condition the final concentration of NH4 + in simulated wastewater could reach the secondary standard of ammonia emissions standard after 120 min adsorption at room temperature at the dosage of 20 g·L-1 for the initial NH4 + concentration of 50 mg·L-1. The experimental data were fitted to adsorption isothermal models and kinetic models, respectively. It was found that Langmuir isotherm model and pseudo-second order kinetic model were the best fit. The adsorption mechanism of NH4 + was proven to be electrostatic attraction and ion-exchange. Source


Yang H.,Suzhou University of Science and Technology | Yang H.,Jiangsu Key Laboratory of Environmental Functional Materials | Zhao X.,Suzhou University of Science and Technology | Zhao X.,Jiangsu Key Laboratory of Environmental Functional Materials | And 3 more authors.
Shiyou Huagong/Petrochemical Technology | Year: 2013

Two novel bis-Schiff-base organic luminescent materials, 1, 4-bis(4-methoxyphenylmethylene) phenylenedi amine (M1) and 1, 4-bis (4-(N, N-diphenyl) aminophenylmethylene) phenylenediamine(M2), were synthesized from p-phenylenediamine and aromatic aldehydes. The structures of the two target compounds were characterized by means of FTIR, 1H NMR and elemental analysis. Their UV-Vis spectra, fluorescence spectra, electrochemical behavior and thermal stability were studied. The results show that M1 emits purple fluorescence in solution but its solid thin film emits blue fluorescence; both M2 in solution and its solid thin film emit green fluorescence. Their ionization potential energies are 5.10, 4.91 eV respectively, which matches with the work function(4.8 eV) of the positive electrode, so the barrier of the hole transporting can be reduced effectively. The results of the TG curves show that their thermal decomposition temperatures are 375 and 350°C respectively, and they have good thermal stability. Source


Zhao X.,Suzhou University of Science and Technology | Zhao X.,Jiangsu Key Laboratory of Environmental Functional Materials | Ge M.,Suzhou University of Science and Technology | Ge M.,Jiangsu Key Laboratory of Environmental Functional Materials | And 3 more authors.
Shiyou Huagong/Petrochemical Technology | Year: 2012

Two novel phenanthroimidazole derivatives of 2-(4-(4'-methoxyphenylmethyleneamino)phenyl) phenanthroimidazole(MPPI) and 2-(4-(4'-N, N-diphenylaminophenylmethyleneamino)phenyl) phenanthroimidazole(DPAPPI) were synthesized from phenanthrenequinone, p-nitrobenzaldehyde, p-methoxybenzaldehyde and triphenylamine. The two compounds were characterized by means of FTIR, 1H NMR, UV-Vis spectrum and fluorescence spectrum. Their cyclic volt-ampere curves and TG curves were studied. The results showed that the thermal stability of both MPPI and DPAPPI was good. The maximum UV absorption peaks of MPPI and DPAPPI were at 374 nm and 392 nm, respectively, and their dimethylformamide solutions emitted blue fluorescence. The TG curves indicated that their thermal decomposition temperatures were at 370°C for MPPI and 391°C for DPAPPI. They could be used as blue light-emitting and hole transport materials. Source


Xie J.,Suzhou University of Science and Technology | Xie J.,Jiangsu Key Laboratory of Environmental Functional Materials | Zhao X.,Suzhou University of Science and Technology | Zhao X.,Jiangsu Key Laboratory of Environmental Functional Materials | And 3 more authors.
Shiyou Huagong/Petrochemical Technology | Year: 2012

A novel high temperature-resistant cationic starch filtrate reducer(HTS) used in drilling fluid was prepared from hexamethyldisilazane, phenyl amine, carboxylmethyl starch(CMS) and sodium 3-chloro-2-hydroxypropyl sulfonate. The chemical structure and thermal stability of HTS were studied by means of FTIR and DTA. The results show that phenyl cationic groups, organic silicon functional groups and sulfonic acid groups are introduced into the structure of CMS and the decomposition temperature of HTS is 232°C. The fresh water drilling fluid properties, hightemperature resistance and salt tolerance of HTS were also investigated. The results indicate that the filtration reduction property of the fresh water drilling fluid containing HTS before and after aging 16 h at 160°C is excellent, and the drilling fluid shows a small variation in rheological properties. HTS could resist 40°C higher temperature than those of traditional modified starch filtrate reducers. HTS exhibited a better filtrate reduction property in brine water drilling fluid with 4%(w) and 8%(w) NaCl, which indicated that the salt tolerance of HTS was improved due to the introduction of the sulfonic acid groups. Source


Guan X.,Suzhou University of Science and Technology | Zhao X.,Suzhou University of Science and Technology | Zhao X.,Jiangsu Key Laboratory of Environmental Functional Materials | Yang H.,Suzhou University of Science and Technology | And 5 more authors.
Shiyou Huagong/Petrochemical Technology | Year: 2013

A novel bipolar-luminescence material, 3-(4-(2-phenanthroimidazole)phenyl)vinyl-5,5- dimethyl-2-cyclohexaenylidenemalononitrile (PIPCM), was synthetized from phenanthraquinone, terephthalaldehyde, isophorone and malononitrile. The structure, fluorescence property, electrochemical behavior and thermal stability of PIPCM were characterized by means of FTIR, 1H NMR, UV-Vis, fluorescence spectra and DSC. The results show that PIPCM emits strong blue fluorescence in N, N-dimethylformamide solution and red fluorescence in solid thin film. The electron affinity and ionization potential of PIPCM are 2.96 eV and 5.84 eV, respectively, thus PIPCM possesses both electron and hole transmission performances. With good thermal stability, PIPCM shows potential to be a bipolar luminescence material. Source

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