scholarly journals Pd@Zn core–shell nanoparticles of controllable shell thickness for catalytic methanol production

2016 ◽  
Vol 6 (21) ◽  
pp. 7698-7702 ◽  
Author(s):  
Fenglin Liao ◽  
Xin-Ping Wu ◽  
Jianwei Zheng ◽  
Meng-Jung Li ◽  
Ziyan Zeng ◽  
...  
Keyword(s):  
Shell Thickness ◽  
Synthesis Method ◽  
Catalytic Performance ◽  
Shell Structures ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Methanol Production ◽  
Novel Synthesis ◽  
Core Shell Nanoparticles

A novel synthesis method of nano-Pd@Zn core–shell structures with controllable shell thickness showing remarkable catalytic performance in CO2hydrogenation.

scholarly journals Influence of Ag@SiO2 with Different Shell Thickness on Photoelectric Properties of Hole-Conductor-Free Perovskite Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2364
Author(s):  
Zhiyuan He ◽  
Chi Zhang ◽  
Rangwei Meng ◽  
Xuanhui Luo ◽  
Mengwei Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Shell Thickness ◽  
Perovskite Solar Cells ◽  
Current Gain ◽  
Core Shell ◽  
Counter Electrodes ◽  
Shell Nanoparticles ◽  
Photoelectric Properties ◽  
Photosensitive Layer ◽  
Core Shell Nanoparticles

In this paper, Ag@SiO2 core-shell nanoparticles (NPs) with different shell thicknesses were prepared experimentally and introduced into the photosensitive layer of mesoscopic hole-conductor-free perovskite solar cells (PSCs) based on carbon counter electrodes. By combining simulation and experiments, the influences of different shell thickness Ag@SiO2 core-shell nanoparticles on the photoelectric properties of the PSCs were studied. The results show that, when the shell thickness of 0.1 wt% Ag@SiO2 core-shell nanoparticles is 5 nm, power conversion efficiency is improved from 13.13% to 15.25%, achieving a 16% enhancement. Through the measurement of the relevant parameters of the obtained perovskite film, we found that this gain not only comes from the increase in current density that scholars generally think, but also comes from the improvement of the film quality. Like current gain, this gain is related to the different shell thickness of Ag@SiO2 core-shell nanoparticles. Our research provides a new direction for studying the influence mechanism of Ag@SiO2 core-shell nanoparticles in perovskite solar cells.

Synthesis of Zn2SiO4@ZnO core-shell nanoparticles and the effect of shell thickness on band-gap transition

2020 ◽  
Vol 240 ◽  
pp. 122144 ◽  
Author(s):  
Zhiyang Li ◽  
Bridgid Wanjala ◽  
George Cernigliaro ◽  
Dan Nawrocki ◽  
Zhiyong Gu
Keyword(s):  
Band Gap ◽  
Shell Thickness ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

scholarly journals Tunable band gap and coercivity of bismuth ferrite–polyaniline core–shell nanoparticles: the role of shell thickness

RSC Advances ◽  
2015 ◽  
Vol 5 (30) ◽  
pp. 23563-23568 ◽  
Author(s):  
Smita Chaturvedi ◽  
Raja Das ◽  
Pankaj Poddar ◽  
Sulabha Kulkarni
Keyword(s):  
Band Gap ◽  
Shell Thickness ◽  
Bismuth Ferrite ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles ◽  
Tunable Band Gap

We report a tunable band gap of bismuth ferrite–polyaniline core–shell nanoparticles from 2.24 to 1.98 eV and the variation of coercivity from 118 to 100 Oe, by varying the thickness of the polyaniline shell.

Iron-Carbon Core-Shell Nanoparticles Obtained with Different Conditions of Synthesis

2017 ◽  
Vol 899 ◽  
pp. 221-226 ◽  
Author(s):  
M.M. Lima ◽  
J.P.Z. Gonçalves ◽  
C. Soares ◽  
Humberto Gracher Riella ◽  
S.C. Fernandes ◽  
...  
Keyword(s):  
Synthesis Method ◽  
Processing Parameters ◽  
Effect Of Temperature ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Shell Mass ◽  
The Core ◽  
Iron Precursor ◽  
Co Precipitation ◽  
Core Shell Nanoparticles

Core–shell Fe2O3@C nanoparticles are very studied due to its biocompatibility with plant and animals cells and due its special properties of chemical adsorption. Thus, the definition of an easy synthesis method of these nanoparticles is very important to the scientific studies and to future applications of these materials. For example, the properties of these nanoparticles depend of the combination between some processing parameters, as the temperature, time, chemical composition, atmosphere and others. The mass yield of the synthesis processes depend of these parameters and are important information. In this work the effect of temperature and of the concentration of the iron precursor were evaluated on the characteristics of the proposed nanoparticles. The nanostructures of Fe2O3 coated with carbon (Fe2O3@C) were synthetized by adapted co-precipitation hydrothermal rote. In 40.0 ml of distilled water was added 1.800 g of glucose, 6.006 g of urea, 0.500 g of polyethylene Glycol (PEG 1500) and different concentrations of iron nitrate Fe (NO2)3.9H2O and different temperature values were applied. The Fe2O3@C core-shell were characterized by scanning electron microscopy (SEM/FEG), Energy Dispersive Scanning (EDS) and X-ray Diffractions (XRD). Results showed that nanoparticles form clusters with different sizes that are dependent on the temperature values and Fe (NO3)3.9H2O concentration. The core-shell mass has a linear relation with the iron precursor mass and the reaction temperatures influences the microstructure of the core-shell nanoparticles.

Facile Electrochemical Characterization of Core/Shell Nanoparticles. Ag Core/Ag2O Shell Structures

Nano Letters ◽  
2007 ◽  
Vol 7 (5) ◽  
pp. 1406-1412 ◽  
Author(s):  
Jalal Ghilane ◽  
Fu-Ren F. Fan ◽  
Allen J. Bard ◽  
Nicholas Dunwoody
Keyword(s):  
Electrochemical Characterization ◽  
Shell Structures ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles
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