Entity

Time filter

Source Type


Huang G.,CAS Changchun Institute of Applied Chemistry | Huang G.,University of Chinese Academy of Sciences | Zhang L.,CAS Changchun Institute of Applied Chemistry | Zhang L.,University of Chinese Academy of Sciences | And 4 more authors.
Nanoscale | Year: 2014

Metal-organic frameworks (MOFs) with high surface areas and uniform microporous structures have shown potential application in many fields. Here we report a facial strategy to synthesize Fe2O3@NiCo 2O4 porous nanocages by annealing core-shell Co 3[Fe(CN)6]2@Ni3[Co(CN) 6]2 nanocubes in air. The obtained samples have been systematically characterized by XRD, SEM, TEM and N2 adsorption-desorption analysis. The results show that the Fe2O 3@NiCo2O4 porous nanocages have an average diameter of 213 nm and a shell thickness of about 30 nm. As anode materials for Li-ion batteries, the Fe2O3@NiCo2O4 porous nanocages exhibit a high initial discharge capacity of 1311.4 mA h g -1 at a current density of 100 mA g-1 (about 0.1 C). The capacity is retained at 1079.6 mA h g-1 after 100 cycles. The synergistic effect of the different components and the porous hollow structure contributes to the outstanding performance of the composite electrode. This journal is © the Partner Organisations 2014. Source


Fan L.,CAS Changchun Institute of Applied Chemistry | Hu Y.,CAS Changchun Institute of Applied Chemistry | Wang X.,Jilin Product Quality Supervision Test Institute | Zhang L.,Jilin Product Quality Supervision Test Institute | And 7 more authors.
Talanta | Year: 2012

This paper for the first time reports a chemical method to prepare graphene quantum dots (GQDs) from GO. Water soluble and surface unmodified GQDs, serving as a novel, effective and simple fluorescent sensing platform for ultrasensitive detection of 2,4,6-trinitrotoluene (TNT) in solution by fluorescence resonance energy transfer (FRET) quenching. The fluorescent GQDs can specifically bind TNT species by the π-π stacking interaction between GQDs and aromatic rings. The resultant TNT bound at the GQDs surface can strongly suppress the fluorescence emission by the FRET from GQDs donor to the irradiative TNT acceptor through intermolecular polar-polar interactions at spatial proximity. The unmodified GQDs can sensitively detect down to ∼0.495 ppm (2.2 μM) TNT with the use of only 1 mL of GQDs solution. The simple FRET-based GQDs reported here exhibit high and stable fluorescence. Eliminating further treatment or modification, this method simplifies and shortens the experimental process. It possesses good assembly flexibility and can thus find many applications in the detection of ultratrace analytes. © 2012 Elsevier B.V. All rights reserved. Source


Huang G.,CAS Changchun Institute of Applied Chemistry | Huang G.,University of Chinese Academy of Sciences | Zhang F.,CAS Changchun Institute of Applied Chemistry | Zhang F.,University of Chinese Academy of Sciences | And 8 more authors.
Journal of Materials Chemistry A | Year: 2014

A simple method for the synthesis of NiFe2O4/Fe 2O3 nanotubes by annealing core-shell Fe2Ni MIL-88/Fe MIL-88 metal organic frameworks (MOFs) has been developed. The crystalline phase, morphology and specific surface area (BET) of the resulting sample have been systematically characterized. The results indicate that the NiFe2O4/Fe2O3 nanotubes, which have diameters of 78 nm and lengths of around 1 μm, are composed of nano-sized primary particles. The electrochemical performance of the NiFe2O 4/Fe2O3 nanotubes when used as an anode material for lithium ion batteries has also been tested. A reversible specific capacity of 936.9 mA h g-1 was achieved at a current density of 100 mA g-1 up to 100 cycles. Even at 2000 mA g-1, the discharge capacity of the composite anode could still reach 423.6 mA h g -1. The enhanced electrochemical performance of the NiFe 2O4/Fe2O3 nanotube anode can be ascribed to the rational design of the hierarchical porous hollow structures and the synergetic effect of different functional components. This journal is © the Partner Organisations 2014. Source


Qin Y.-L.,CAS Changchun Institute of Applied Chemistry | Qin Y.-L.,University of Chinese Academy of Sciences | Wang J.,CAS Changchun Institute of Applied Chemistry | Wang J.,University of Chinese Academy of Sciences | And 4 more authors.
Chemical Communications | Year: 2013

Formic acid (FA) holds great potential as a convenient source of hydrogen for sustainable chemical synthesis and renewable energy storage. Herein, the non-noble metal nickel (Ni) exhibits superior promoting effect in improving the catalytic activity of Pd toward high activity and selectivity for FA decomposition at room temperature. © 2013 The Royal Society of Chemistry. Source


Liu X.,CAS Changchun Institute of Applied Chemistry | Xin X.,CAS Changchun Institute of Applied Chemistry | Xiang D.,CAS Changchun Institute of Applied Chemistry | Liang Y.,CAS Changchun Institute of Applied Chemistry | And 3 more authors.
RSC Advances | Year: 2013

A facile and efficient one-pot synthesis of substituted 2,5-dihydrofurans from cinnamaldehydes and β-oxo amides is described, and a mechanism involving the intramolecular oxidative cyclization of penta-2,4- dienamides, i.e. Knoevenagel condensation products, forming a new C-O bond in the presence of phenyliodine diacetate (PIDA) is proposed. © 2013 The Royal Society of Chemistry. Source

Discover hidden collaborations