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A Reduction-Pyrolysis-Catalysis Synthesis of Diamond

Title of Talk:
Shape Controllable Synthesis of Pt–Fe3O4–MnOx Nanoparticles and Electrocatalytic Activity on Oxygen Reduction Reaction

pyrolysis–catalysis synthesis of diamond

Abstract:
TiO2 nanofibers were synthesized using electrospinning [Jamil et al Ceramics International 38 (2012) 2437–2441]. The nanofibers were polycrystalline and porous in nature having average diameter and length of ~150 nm and 200 µm, respectively. Fig. 1 (a) and (b) shows scanning electron microscope (SEM) and transmission electron microscope (TEM) image of TiO2 nanofibers, respectively. The bandgap of the nanofibers lies in optical range ˃ 3.2eV. Which showed relatively low photocatalytic degradation of toxic textile dyes (Fig. 2). To improve it photocatalytic activity we embedded Mn0.5Co0.5Fe2O4 nanoparticles into TiO2 nanofibers. Which showed improved photocatalytic activity for the degradation of toxic organic compound (Fig. 2). We are now investigating the effect of photocatalytic water splitting for hydrogen evolution. It is expected that these heterostructure nanofibers will show improve photocatalytic activity for hydrogen evolution via water splitting.

the work of synthesis of diamond powders by reducing pyrolysis was ..

of methane to synthesis gas over oxidized diamond catalysts ..

Abstract:
Integrating multiple functionalities into a single nanoparticle (NP) is an important strategy to design hybrid materials for advanced applications. Recently, there has been a growing interest in the synthesis of heterodimeric metal–metal oxide NPs comprising nonprecious metal oxides owing to their unique magnetic, optical, and catalytic properties. The production of shape-controlled heterometallic NPs consisting of Pt and nonprecious metal oxides is crucial to demonstrate the composition–property relationship of NPs. Herein, a facile one-pot approach for the controlled synthesis of dumbbell-like Pt–Fe3O4–MnOx and dendritic Pt–MnOx NPs were reported. The key to the success of this synthesis is in changing the quantity of Fe(CO)5 additive to control the reaction kinetics. In the absence of Fe(CO)5, dendritic Pt–MnOx NPs were synthesized through the assembly of small seed NPs. On the other hand, dumbbell-like Pt–Fe3O4–MnOx NPs were obtained in the presence of Fe(CO)5 through controlling the nucleation and growth of Fe and Mn on the Pt NPs, followed by air oxidation. Compared to a Pt/graphene oxide (GO) catalyst, dumbbell-like Pt–Fe3O4–MnOx NPs on GO showed an enhancement of specific activity toward the oxygen reduction reaction owing to the compressive-strain effect exerted on the Pt lattice.

Title of Talk: Shape Controllable Synthesis of Pt–Fe3O4–MnOx Nanoparticles and Electrocatalytic Activity on Oxygen Reduction Reaction

Diamond Formation by Reduction of Carbon Dioxide at …

Glucomannan-mediated facile synthesis of gold nanoparticles for catalytic reduction of 4-nitrophenol Nanoscale Research Letters

, 2002 , 2002, 14(22), 1658
8) A reduction-pyrolysis-catalysis synthesis of diamond , Science , 1998 , 1998, 281(5374),246-247
9) A benzene-thermal synthetic route to nanocrystalline GaN , Science , 1996 , 1996, 272(5270), 1926-1927

Abstract:
TiO2 nanofibers were synthesized using electrospinning [Jamil et al Ceramics International 38 (2012) 2437–2441]. The nanofibers were polycrystalline and porous in nature having average diameter and length of ~150 nm and 200 µm, respectively. Fig. 1 (a) and (b) shows scanning electron microscope (SEM) and transmission electron microscope (TEM) image of TiO2 nanofibers, respectively. The bandgap of the nanofibers lies in optical range ˃ 3.2eV. Which showed relatively low photocatalytic degradation of toxic textile dyes (Fig. 2). To improve it photocatalytic activity we embedded Mn0.5Co0.5Fe2O4 nanoparticles into TiO2 nanofibers. Which showed improved photocatalytic activity for the degradation of toxic organic compound (Fig. 2). We are now investigating the effect of photocatalytic water splitting for hydrogen evolution. It is expected that these heterostructure nanofibers will show improve photocatalytic activity for hydrogen evolution via water splitting.

EXPERIMENTAL STUDY OF KINETIC REGULARITIES OF CARBON NANOTUBE, NANOFIBER SYNTHESIS VIA CATALYTIC PYROLYSIS OF GAS MIXTURES OF VA
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