Cheng Chao Li

Hunan University

It is still a great challenge to develop the long-life anode active materials for lithium ion batteries (LIBs) due to those issues resulting from the volumetric expansion of electrode materials during lithiation. Herein, we report the preparation of N-doped carbon (N-C) nanotubes encapsulated MnO nanoparticles with the size of 20-50 nm by hydrolysi...

MOF-derived ZnO@ZnO Quantum Dots/C core-shell nanorod arrays grown on flexible carbon cloth are successfully fabricated as a binder-free anode for Li-ion storage. In combination with the advantages from the ZnO/C core-shell architecture and the 3D nanorod arrays, this material satisfies both efficient ion and fast electron transport, and thus shows...

Herein, we present a new strategy for the mass production of high-quality reduced graphene oxide (RGO) with a surface area of 354 m2 g−1 using high pressure hydrogen as a reducing agent under hydrothermal conditions. The high pressure used is solely generated from the packing of the gas cylinder itself and a pressure meter could simply fulfil the r...

Mesoporous niobium oxide spheres (MNOS), conveniently prepared by a novel antisolvent precipitation approach, have been shown to be an effective catalyst for the transamidation of primary amides with amines. This novel transamidation can be efficiently carried out under solvent‐free conditions and is applicable to a wide range of primary amides and...

Herein we reported a green synthetic route for the preparation of Au–Pt core–shell nanoparticle chains in a two-step route without the use of any surfactants. In the synthesis, compressed hydrogen was used as a reducing reagent, which also promoted the assembly of particle chains. The as-prepared monodispersed gold nanoparticles were manipulated by...

A right mix‐up! A facile approach is reported that enables the in situ production of fine Ru nanoparticles (d≈3 nm) on graphene oxide. The as‐obtained composite shows superior catalytic activity and stability for the hydrogenation of arenes.

We have devised a general synthetic strategy for preparation of single- and multicomponent rare-earth coordination polymer colloidal spheres (RE-CPCSs). This strategy is based on an integration of coordination chemistry and antisolvent effect for synchronized precipitation. Highly monodisperse RE-CPCSs with homogeneous mixing of RE elements have be...

A seed-free, aqueous solution route was devised for preparing single crystalline gold nanowires by using a new reducing agent, 2-pyrrolidinone as a solvent and water as an initiating agent. In addition, the reaction mechanism was carefully studied by control experiments and gas chromatography mass spectrometry (GCMS).

We have developed a low‐cost reaction protocol to synthesize mesoporous Nb2O5‐based solid acid catalysts with external shape control. In the synthesis, monodisperse glycolated niobium oxide spheres (GNOS) were prepared by means of a simple antisolvent precipitation approach and subsequently converted to mesoporous niobium oxide spheres (MNOS) with...

In this work, we reported several kinds of highly stable, effective mesoporous Au/TiO2 sphere-based solid acid catalysts with large specific surface areas and good monodispersity in the reaction medium. In this process, monodisperse titanium glycolate spheres were first formed by an antisolvent precipitation route, and were then converted to mesopo...

A facile, green strategy is explored to synthesize mesoporous Au/Li(4)Ti(5)O(12) spheres based on in situ conversion of titanium glycolate in LiOH aqueous solution. Compared with TiO(2) precursors, titanium glycolate possesses some strengths: (i) fast and easy preparation; (ii) direct reaction with LiOH without introduce of TiO(2) impurity. In the...

We have demonstrated an extremely facile procedure for the preparation of 3D porous manganese oxidenanostructures by pyrolysis of Mn-based coordination polymernanowires. The highly aligned and ultralong Mn-based polymernanowires with high chemical purities were prepared using nitrilotriacetic acid (NA) as a chelating agent by a one-step hydrotherma...

Cobalt oxide nanowire array films have been prepared on large-area metallic substrates via a topochemical conversion route and have been demonstrated as advanced anode materials for high-performance lithium-ion batteries. Compared to previous reports, the cobalt oxide nanowire array electrodes will have good contact with the conducting substrates a...

A simple glucose-assisted hydrothermal process has been developed to design complex and functional ZnO/SnO2nanostructures. In this synthesis, the abundant hydroxylgroups of glucose can ligate with Zn2+ and Sn4+, and induce nucleation. Furthermore, the glucose molecules can form stacking templates to direct the oriented attachment of nanorods and na...

Two kinds of topochemical conversion routes from cobalt hydroxide precursors to cobalt oxide-based porous nanostructures are presented: pyrolysis in air and hydrothermal treatment by the Kirkendall diffusion effect. These cobalt hydroxide precursors were synthesized by a simple hydrothermal approach with sodium acetate as mineralizer at 200 °C. Det...

A facile solution-based method to synthesize cobalt nanofibers with a complex pine-tree-leaf like architecture has been developed. Mechanistic formation processes of this synthetic approach have been revealed, and some important preparative parameters related to the synthesis have been identified and investigated with some designed experiments. In...

In this paper, the authors report the high-performance lithium storage properties of branched cobalt oxide nanowires synthesized through a topotactic conversion route. Compared with other nanosized materials, such branched nanostructures not only inherit the advantages of high surface-to-volume ratio and good dispersion but also show better electro...

This paper reported a simple template-free route to prepare hierarchical SnO2 nanostructures with hollow interiors. These high porous architectures, with the diameter about 200 nm, were assembled by nanosheets. Time-dependent experiments illustrated that these hierarchical and hollow nanostructures were transformed from solid SnO2 spheres composed...

Transition metal nitrates, carbonates, hydroxides, hydroxyoxides, and so forth are often used as solid precursors to synthesize their respective nanostructured metal-oxides after chemical/thermal conversion. However, synthesis of submicrometer uniform crystalline particles of this class of compound intermediates remains as a challenging but less st...

The authors report on gas sensing properties of SnO2 hollow spheres with diverse microstructures, which are synthesized through controlled precipitation of Sn(OH)4 layers on carbon sphere templates, followed by heat treatment at different temperatures. Hollow spheres derived at 973 K consist of monolayer SnO2 grains, which lead to a huge activated...