Bolin Li

Novel visible light-induced g-C3N4 quantum dot/BiPO4 nanocrystal composite photocatalysts for efficient degradation of methyl orange

Novel composite architectures made up of graphitic carbon nitride quantum dots/bismuth phosphate nanocrystals have been synthesized as a visible light-induced photocatalyst for efficient degradation of methyl orange.

A tungsten carbide/iron sulfide/FePt nanocomposite supported on nitrogen-doped carbon as an efficient electrocatalyst for oxygen reduction reaction

The development of multi-component electrocatalysts offers great promise to enhance catalytic performance for the oxygen reduction reaction (ORR) of fuel cells. Herein, we report a novel hybrid material consisting of multiple components of tungsten carbide (WC), iron sulfide (FeS), FePt and nitrogen-doped carbon (NC), i.e. WC/FeS/FePt/NC hybrid architecture, as a high-performance electrocatalyst for the ORR. Due to the attractive multiple promoting effects from these components, the present Pt-based electrocatalyst exhibits an excellent mass activity of 317 mA mg−1 Pt (at 0.9 V vs. RHE), which is about 2.5 times as high as that of commercial Pt/C catalyst (125 mA mg−1 Pt). Moreover, superior durability in acidic electrolyte of the WC/FeS/FePt/NC is also demonstrated for the ORR. Importantly, this work provides a new approach for the design of high-performance ORR electrocatalysts by integrating the promoting effects of multiple components (especially for carbides and sulphides) on noble metals, which presents promising potential application for fuel cells.

Controlled synthesis of ZnGa2O4 nanorod arrays from hexagonal ZnO microdishes and their photocatalytic activity on the degradation of RhB

Novel ZnGa2O4 nanorod arrays with desirable photocatalytic activity for organic dye degradation have been synthesized by an associated solution–liquid–solid growth and topological morphology-conversion synthetic strategy.

3-D N-doped porous graphene-like network and vanadium nitride co-promoted Pt electrocatalyst with high activity and stability for the oxygen reduction reaction

A three dimensional (3D) N-doped porous graphene and vanadium nitride co-promoted Pt (3DNPG/VN/Pt) electrocatalyst was first presented in this work. Such multi-component catalysts exhibited superior performance for the oxygen reduction reaction (ORR). The mass activity of 3DNPG/VN/Pt is 535 mA mg−1 Pt (after IR correction), which is 4.35 times as high as that of commercial Pt/C (123 mA mg−1 Pt). Higher stability of 3DNPG/VN/Pt is also demonstrated in comparison with the commercial Pt/C.

Preparation of carbon nanospheres/Fe 3 O 4 composites and their supercapacitor performances

Colloidal carbon spheres were synthesized with hydrothermal method by taking glucose as raw material. By using colloidal carbon spheres as carbon precursor and ferrocene as iron source, a series of carbon nanospheres/Fe3O4 composites with different Fe3O4 contents were prepared under high temperature condition. The structure of composites was analyzed by X-ray diffraction and scanning electron microscope. The electrochemical performances of composites were analyzed by cyclic voltammetry, galvanostatic charge–discharge, alternating current impedance and cycle-life testing. The study results showed that Fe3O4 nanoparticles are successfully attached to the carbon nanospheres. The composites have excellent energy storage capacity, high charge–discharge efficiency and well cycle stability.

Simple preparation of graphene-decorated NiCo 2 O 4 hollow nanospheres with enhanced performance for supercapacitor

Supercapacitor is a new kind of energy storage devices with characteristics of high power density, fast charge–discharge rate and long cycle life. In this paper, graphene-decorated NiCo2O4 hollow nanospheres (GE/NiCo2O4) were synthesized by a consecutive hydrothermal and sintering method for supercapacitor application. The structures and morphologies of the samples were characterized by XRD, SEM and TEM. The electrochemical properties of the electrodes were measured by CV, CDC and EIS. The testing results showed that the specific capacitance, rate capability and stability the GE/NiCo2O4 electrode are obviously improved in comparison to those of single NiCo2O4 electrode, which demonstrated that introducing graphene onto the surface of NiCo2O4 hollow nanospheres can produce high-performance composite electrode material for supercapacitor application.

Bimetallic carbide of Co3W3C enhanced non-noble-metal catalysts with high activity and stability for acidic oxygen reduction reaction

A bimetallic carbide enhanced nitrogen/phosphor co-doped graphite nanocomposite (Co3W3C/NPG) is proposed for the first time as a highly active and stable non-noble-metal catalyst for the oxygen reduction reaction (ORR). The newly multi-component Co3W3C/NPG catalysts presented a high on-set potential of 0.92 V and little decreased half-wave potential of 5 mV after 8000 cycles in the O2-saturated 0.1 M HClO4 electrolyte. The electron transfer number was calculated to be above 3.9 before and after 8000 cycles, indicating that the Co3W3C/NPG catalyst behaves as a steady 4e oxygen reductant in acidic medium.