Key Laboratory of Green Chemistry and Technology

Key Laboratory of Green Chemistry and Technology


Time filter

Source Type

Zheng J.,Key Laboratory of Green Chemistry and Technology | Zheng J.,University of Sichuan | Liu Z.Q.,University of Sichuan | Zhao X.S.,National University of Singapore | And 3 more authors.
Nanotechnology | Year: 2012

We report the synthesis of Fe 3O 4@C coreshell nanoparticles (FCNPs) by using a facile one-step solvothermal method. The FCNPs consisted of Fe 3O 4 particles as the cores and amorphous uniform carbon shells. The content of Fe 3O 4 is up to 81.6wt%. These coreshell nanoparticles are aggregated by primary nanocrystals with a size of 1012nm. The FCNPs possess a hollow interior, high magnetization, excellent absorption properties and abundant surface hydroxyl groups. A possible growth mechanism of the FCNPs is proposed. The role of glucose in regulating the grain size and morphology of the particles is discussed. The absorption properties of the FCNPs towards Cr(VI) in aqueous solution is investigated. We demonstrate that the FCNPs can effectively remove more than 90wt% of Cr(VI) from aqueous solution. © 2012 IOP Publishing Ltd.


Du Y.,Key Laboratory of Green Chemistry and Technology | Xue F.,China Tobacco Chuanyu Industrial Corporation | Liu H.,Key Laboratory of Green Chemistry and Technology | Shi F.,China Tobacco Chuanyu Industrial Corporation | And 3 more authors.
Asian Journal of Chemistry | Year: 2013

In this study, the impact of four free phytosterols (cholesterol, stigmasterol, b-sitosterol and campesterol) on the delivery of 15 polycyclic aromatic hydrocarbons in tobacco was analyzed by GC/MS, the experiments were designed and carried out basing on uniform design and the results were analyzed by a second-order polynomial stepwise regression model. With regression analysis, the results highlight that those four free phytosterols as well as their interaction effect significantly influenced the delivery of polycyclic aromatic hydrocarbons and there may existed an obvious linear relationship. The analysis results of benzo[a]pyrene indicated that cholesterol, stigmasterol and campesterol have a positive influence on the delivery of benzo[a]pyrene while the interaction effect between cholesterol and campesterol, between stigmasterol and campesterol, between b-sitosterol and campesterol have a negative influence on the delivery of benzo[a]pyrene.


Fan G.-Y.,Key Laboratory of Green Chemistry and Technology | Fan G.-Y.,China West Normal University | Zhang L.,Key Laboratory of Green Chemistry and Technology | Fu H.-Y.,Key Laboratory of Green Chemistry and Technology | And 4 more authors.
Catalysis Communications | Year: 2010

Ir/ZrO2·xH2O was prepared by co-precipitation and characterized by TEM, XRD, and XPS. It showed an excellent catalytic performance for the hydrogenation of haloaromatic nitro compounds to the corresponding amines in the mixture solvent of ethanol and water. The catalyst gave both conversion and selectivity to be over 99.9% for the hydrogenation of p-chloronitrobenzene to p-chloroaniline. Besides the intrinsic characterization of iridium in the hydrogenation of haloaromatic nitro compounds, the high activity and selectivity of Ir/ZrO2·xH2O is probably attributed to the formation of hydrogen bond between substrate and the hydroxyl groups on the surface of the hydrous catalyst or solvent water to activate the N{double bond, long}O bond in nitro group. The activated N{double bond, long}O bond is easy to be attacked by the activated hydrogen, so the hydrogenation is promoted. © 2009 Elsevier B.V. All rights reserved.


Chen X.,Key Laboratory of Green Chemistry and Technology | Jia M.,Key Laboratory of Green Chemistry and Technology | Liu G.,Key Laboratory of Green Chemistry and Technology | Zhang X.,Key Laboratory of Green Chemistry and Technology | And 2 more authors.
Applied Surface Science | Year: 2010

Pt/Al-MCM-41 samples with constant metal loading but various Si/Al ratios were prepared by reacting pure silica MCM-41 with different concentrations of polyaluminum chloride (PAC) aqueous solutions. It is observed that the molar ratio of Si/Al decreases from 24.3 to 11.2 when increase the PAC concentration from 0.1 M to 2.0 M. A better retention of structural integrity could be seen when the PAC concentration is below 1.0 M. The Lewis acid increases while incorporating aluminum into the framework of MCM-41, while the Brönsted acid reaches a maximum value when the PAC concentration is 1.0 M. Hydroisomerization of n-dodecane was carried out over these Pt/Al-MCM-41 samples. It is demonstrated that increasing the aluminum content generally can trigger a higher n-dodecane conversion, but a lower isomers selectivity due to the increasing strong Brönsted acid sites. And the Pt/Al-MCM-41 post-synthesized by the PAC concentration at 1.0 M shows highest isomers selectivity and yield corresponding to the maximum medium Brönsted acid quantities (24.15 μmol/g). © 2010 Elsevier B.V. All rights reserved.


Wang W.,Key Laboratory of Green Chemistry and Technology | Zhou R.,Key Laboratory of Green Chemistry and Technology | Jiang Z.-J.,Key Laboratory of Green Chemistry and Technology | Wang X.,Key Laboratory of Green Chemistry and Technology | And 4 more authors.
European Journal of Organic Chemistry | Year: 2015

A palladium-catalyzed domino Mizoroki-Heck/intermolecular unactivated C(sp3)-H alkylation reaction has been developed. This simple palladium nanoparticle catalytic system shows good activity and affords the dimeric dihydrobenzofuran derivatives in moderate to good yields. Furthermore, this reaction provides a new method for the elaboration of domino reactions involving a C(sp3)-C(sp3) bond-forming process. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Feng K.,Key Laboratory of Green Chemistry and Technology | Xu X.,Key Laboratory of Green Chemistry and Technology | Li Z.,Key Laboratory of Green Chemistry and Technology | Li Y.,Key Laboratory of Green Chemistry and Technology | And 3 more authors.
Chemical Communications | Year: 2015

Alkylthiothieyl substituted benzothiophene (BDT) and alkoxycarbonyl cyanovinyl modified thienothiophene (TT) were copolymerized to obtain a new two dimensional low band gap polymer PBDTTT-S-CN, which exhibited a promising efficiency of 7.0% in organic solar cells. © The Royal Society of Chemistry 2015.

Loading Key Laboratory of Green Chemistry and Technology collaborators
Loading Key Laboratory of Green Chemistry and Technology collaborators