Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle

Nanchang, China

Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle

Nanchang, China
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Deng F.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Deng F.,Nanchang Hangkong University | Zhao L.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Zhao L.,Nanchang Hangkong University | And 6 more authors.
Materials Chemistry and Physics | Year: 2017

The g-C3N4/SnS2 composites were prepared by in situ hydrothermal method, and the effect of g-C3N4 content on the physical and chemical properties, and photocatalytic performance of g-C3N4/SnS2 composites was investigated. The introduction of g-C3N4 enhanced the visible-light absorption of SnS2, and reduced the recombination rate of electron-hole pairs. The photocatalytic performance of g-C3N4/SnS2 composites was also obviously influenced by g-C3N4 content, and it was found that 15% g-C3N4/SnS2 composite exhibited the highest photocatalytic activity and excellent regeneration, which was attributed to the most efficient charge separation, the largest specific surface area and the formation of dominant active species (h+ and [rad]O2 − radicals) during the photocatalytic process. © 2016


Luo X.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Luo X.,Nanchang Hangkong University | Huang Y.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Huang Y.,Nanchang Hangkong University | And 10 more authors.
Microchimica Acta | Year: 2012

We have developed a convenient, selective and reliable method for the rapid enrichment of trace quantities of Cu(II) by using a magnetic Cu(II) ion-imprinted polymer. This is followed by their determination by FAAS. The imprints were prepared by using (a) Cu(II) ions as the template, (b) 3-aminopropyltriethoxysilane as both the functional monomer and the crosslinking agent, and (c) Fe 3O 4 as the magnetic component. Enrichment is carried out in a single step, and adsorbed copper ions can be separated from the sample solution by applying a strong magnet. The effects of pH, elution condition, amount of imprint, and of potentially interfering ions were evaluated. Under the optimal conditions, the detection limit and enrichment factor are 0. 3 μg L -1 and 100, respectively, and the recovery is >95 %. The procedure was successfully applied in the enrichment and detection of trace copper ions in environmental water. © 2012 Springer-Verlag.


Jiang H.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Jiang H.,Nanchang Hangkong University | Zhang W.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Zhang W.,Nanchang Hangkong University | And 6 more authors.
Journal of Materials Chemistry A | Year: 2016

A novel composite that can simultaneously detect and remove heavy metals was prepared in this study. Its adsorption ability rivals that of excellent traditional adsorbents; furthermore, it can change the color to identify the adsorbate and its concentration. The color changes are very easy to detect via the naked eye or with a photometer. This novel adsorbent can remove a large amount of heavy metal ions, and also qualitatively and quantitatively detect heavy metal ions in water. Cu(ii) and Fe(ii) were used to investigate the detection and removal properties of the composite, and SEM, BET, FTIR, zeta potential and XPS were used to physicochemically characterize it. Batch sorption experiments were conducted to study the effects of various factors such as pH, the presence of coexisting metal ions, the contact time and the initial metal concentration. The studies indicated that the adsorption process fits well to the Langmuir model, and the kinetic data could be described very well by the pseudo-second-order kinetic model. The mechanism of adsorption has been discussed in detail. This study provides a simple method for the preparation of smart adsorbents. © The Royal Society of Chemistry 2016.


Luo X.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Luo X.,Nanchang Hangkong University | Liu L.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Liu L.,Nanchang Hangkong University | And 4 more authors.
Journal of Materials Chemistry A | Year: 2013

A novel Pb(ii) ion-imprinted crown ether (Pb(ii)-IIP) was prepared by inverse emulsion polymerization using 4-vinylbenzo-18-crown-6 as a functional monomer. Pb(ii)-IIP showed higher capacity and selectivity than the non-imprinted crown ether (NIP). The monolayer adsorption capacities of Pb(ii)-IIP and NIP for Pb(ii) ions were 27.95 and 13.54 mg g-1, respectively. The relative selectivity coefficients of Pb(ii)-IIP for Pb(ii)/Zn(ii), Pb(ii)/Co(ii), Pb(ii)/Ni(ii) and Pb(ii)/Cd(ii) were 617.79, 500.56, 52.28 and 201.15, respectively. Kinetics studies showed that the adsorption process closely agreed with a pseudo-second-order model. Pb(ii)-IIP exhibited good regeneration, and the adsorption capacity of Pb(ii)-IIP was stable within the first three cycles without obvious decrease. Moreover, Pb(ii)-IIP showed almost 100% removal efficiency for Pb(ii) ions in real environmental water samples, indicating that Pb(ii)-IIP could have wide application prospects in Pb(ii) removal. © 2013 The Royal Society of Chemistry.


Chen P.,Nanchang Hangkong University | Zhang W.,Nanchang Hangkong University | Zhang W.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Li M.,Nanchang Hangkong University | And 5 more authors.
RSC Advances | Year: 2016

A novel magnetic composite of La-Zr was prepared by co-precipitation method, and its fluoride removal ability was investigated in batch studies. The sample was characterized by SEM, EDS and FTIR. Influence of various factors such as pH, presence of coexisting anions, contacting time and initial fluoride concentration were studied in detail by batch sorption experiments. The equilibrium data fitted to Langmuir, Freundlich and Lan-Fre isotherm model, and the maximum sorption capacity was calculated to be 88.5 mg g-1, which is higher than lots of previous adsorbents. The kinetic data can be described well by the pseudo-second-order kinetic model. It was indicated that the overall rate of fluoride sorption is likely to be controlled by chemisorption process. Based on the results, the mechanism of adsorption was discussed in detail. There is no calcination in the preparing process, so this material is considered to be lower cost as compared with some metal elements-based oxides adsorbents, and is beneficial for the practical application. © The Royal Society of Chemistry 2016.


Shen T.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Shen T.,Nanchang Hangkong University | Luo J.,CAS Research Center for Eco Environmental Sciences | Zhang S.,CAS Research Center for Eco Environmental Sciences | And 2 more authors.
Journal of Environmental Chemical Engineering | Year: 2015

Hierarchically mesostructured MIL-101 metal-organic frameworks (MOFs) were synthesized using anhydrous sodium acetate or hydrofluoric acid as a mineralizing agent and cetyltrimethylammonium bromide (CTAB) as a structure-directing agent. These new materials were then used to adsorb and remove the anionic dye methyl orange (MO) and the cationic dye methylene blue (MB) from contaminated water. The adsorption performance was systematically investigated and discussed. Experimental results revealed that the amount of MB adsorbed on MIL-101 that was prepared using sodium acetate is about 3.2 times the amount adsorbed on MIL-101 prepared using hydrofluoric acid, but quantities of adsorbed MO by the two adsorbents were nearly the same. Adsorbents synthesized with higher CTAB content had a higher content of the meso- and macro-scale pores, which favored the MB adsorption but impeded the MO adsorption. Dye adsorption is partially governed by the electrostatic interaction between the dye and the adsorbent, because the mineralizing agent can vary the charge carried by framework in a dye solution. The MB and MO adsorption kinetics followed a pseudo-second-order model, and the equilibrium dye adsorption data provided a good Langmuir model. © 2014 Elsevier Ltd. All rights reserved.


Lv D.,Nanchang Hangkong University | Ou J.,Nanchang Hangkong University | Hu W.,Nanchang Hangkong University | Luo X.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Wang F.,Nanchang Hangkong University
RSC Advances | Year: 2015

A one-step and solvent-free process was developed to fabricate a superhydrophobic surface on copper by higherature oxidation (300 °C) in an atmosphere of gasified 1-dodecanethiol (DT). The so-obtained superhydrophobic surface on a copper mesh was used to build a miniature oil containment boom (MOCB) that was used for oil spill collection. It was found that the MOCB was efficient with a collection rate of over 89% and durable with a negligible decrease in collection rate and deterioration in superhydrophobicity even after 25 cycles of kerosene collection. © The Royal Society of Chemistry 2015.


Deng F.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Deng F.,Nanchang Hangkong University | Liu Y.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Liu Y.,Nanchang Hangkong University | And 9 more authors.
Journal of Hazardous Materials | Year: 2014

Inorganic-framework molecularly imprinted TiO2/SiO2 nanocomposite (MIP-TiO2/SiO2) was successfully prepared by sol-hydrothermal method using 4-nitrophenol as template. The morphology, structure, optical property, zeta-potential and photocurrent of MIP-TiO2/SiO2 were characterized. The adsorption performance and photocatalytic selectivity were also studied. MIP-TiO2/SiO2 shows higher adsorption capacity and selectivity than the non-imprinted TiO2/SiO2 (NIP-TiO2/SiO2). Kinetics results show that the adsorption equilibrium of 4-nitrophenol on MIP-TiO2/SiO2 is established within 20min, and the adsorption process obeys the pseudo-second-order model. Moreover, MIP-TiO2/SiO2 can completely degrade 4-nitrophenol within 30min, while NIP-TiO2/SiO2 takes 110min. It was found that the MIP-TiO2/SiO2 photocatalyst shows molecular recognition ability, leading to selective adsorption and molecular recognitive photocatalytic degradation of 4-nitrophenol. Furthermore, because of its inorganic framework, MIP-TiO2/SiO2 shows excellent reusability. © 2014 Elsevier B.V.


Zhong X.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Zhong X.,Nanchang Hangkong University | Deng F.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Deng F.,Nanchang Hangkong University | And 4 more authors.
Microchimica Acta | Year: 2013

We describe a molecularly imprinted polymer (MIP) for the solid-phase extraction of the skin protectant allantoin. The MIP was deposited on the surface of monodisperse silica microspheres possessing acroyl groups on the surface (MH-SiO2). The resulting MIP microspheres (MH-SiO2@MIP) showed a 3.4-fold higher adsorption capacity and a 1.9-fold better selectivity for allantoin than the respective non-imprinted polymer (MH-SiO2@NIP). The monolayer adsorption capacities of the MH-SiO2@MIP and the MH-SiO2@NIP were calculated with the help of the Langmuir model and found to be 6.8 and 1.9 mg•g-1, respectively. Adsorption kinetics fit a pseudo-second order rate mechanism, with an initial adsorption rate of 1.44 for the MH-SiO2@MIP, and of 0.07 mg•g-1•min-1 for the MH-SiO2@NIP. The material can be regenerated, and its adsorption capacity for allantoin remains stable for at least five regeneration cycles. It was successfully used as a sorbent for the selective solid-phase extraction of allantoin from Rhizoma dioscoreae. [Figure not available: see fulltext.] © 2013 Springer-Verlag Wien.


Luo X.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Luo X.,Nanchang Hangkong University | Wang C.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle | Wang C.,Nanchang Hangkong University | And 9 more authors.
Chemical Engineering Journal | Year: 2013

Hydrated zirconium oxide (ZrO(OH) 2 nanoparticles were modified with graphite oxide (GO) (denoted herein as GO-ZrO(OH) 2 by hydro-thermal co-precipitation reaction, and were used for the simultaneous removal of As(III) and As(V) from drinking water. The GO-ZrO(OH) 2 nanocomposites were characterized using Fourier transformer infrared spectroscopy, X-ray diffraction analysis, high resolution transmission electron microscopy, Zeta-potential, and specific surface area analysis. The size of ZrO(OH) 2 particles in GO-ZrO(OH) 2 is below 5nm, and the specific surface area of GO-ZrO(OH) 2 is about 4 times that of ZrO(OH) 2 nanoparticles. The GO-ZrO(OH) 2 nanocomposites showed high adsorption capacity in a wide pH range, and the monolayer adsorption amounts calculated based on the Langmuir adsorption model were 95.15 and 84.89mg/g for As(III) and As(V), respectively, which are 3.54 and 4.64 times that of ZrO(OH) 2 nanoparticles. The high adsorption capacity is attributed to good dispersion of ZrO(OH) 2 nanoparticles in the GO substrate. The GO-ZrO(OH) 2 nanocomposites can simultaneously remove As(III) and As(V) in water. Moreover, GO-ZrO(OH) 2 showed good anti-interference ability to co-existing anions, and exhibited excellent recyclability. The experimental results suggest that GO-ZrO(OH) 2 is a promising adsorbent for the removal of arsenic from drinking water. © 2013 Elsevier B.V.

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