scholarly journals Optimization of gold–palladium core–shell nanowires towards H2O2 reduction by adjusting shell thickness

2020 ◽  
Vol 2 (2) ◽  
pp. 785-791 ◽  
Author(s):  
Yongdi Dong ◽  
Qiaoli Chen ◽  
Xiqing Cheng ◽  
Huiqi Li ◽  
Jiayu Chen ◽  
...  
Keyword(s):  
Shell Thickness ◽  
Core Shell ◽  
One Pot ◽  
H2o2 Reduction ◽  
Shell Nanowires

AurichPd@AuPdrich core–shell nanowires with tunable shell-thickness are successfully synthesized via a one-pot route and they show optimized H2O2 detection activity.

Solution-growth and optoelectronic properties of ZnO:Cl@ZnS core–shell nanowires with tunable shell thickness

2013 ◽  
Vol 555 ◽  
pp. 213-218 ◽  
Author(s):  
Jiandong Fan ◽  
Cristian Fábrega ◽  
Reza Zamani ◽  
Alexey Shavel ◽  
Frank Güell ◽  
...  
Keyword(s):  
Shell Thickness ◽  
Optoelectronic Properties ◽  
Solution Growth ◽  
Core Shell ◽  
Shell Nanowires

scholarly journals Determination of the Optimal Shell Thickness for Self-Catalyzed GaAs/AlGaAs Core–Shell Nanowires on Silicon

Nano Letters ◽  
2016 ◽  
Vol 16 (6) ◽  
pp. 3426-3433 ◽  
Author(s):  
R. Songmuang ◽  
Le Thuy Thanh Giang ◽  
J. Bleuse ◽  
M. Den Hertog ◽  
Y. M. Niquet ◽  
...  
Keyword(s):  
Shell Thickness ◽  
Core Shell ◽  
Shell Nanowires

Optimized shell thickness of NiSi/SiC core-shell nanowires grown by hot-wire chemical vapour deposition for supercapacitor applications

2020 ◽  
Vol 716 ◽  
pp. 138430
Author(s):  
Najwa binti Hamzan ◽  
Muhammad Mukhlis bin Ramly ◽  
Muhammad Firdaus bin Omar ◽  
Hideki Nakajima ◽  
Sarayut Tunmee ◽  
...  
Keyword(s):  
Chemical Vapour Deposition ◽  
Shell Thickness ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Core Shell ◽  
Hot Wire ◽  
Supercapacitor Applications ◽  
Shell Nanowires

scholarly journals One-pot aqueous synthesis of cysteine-capped CdTe/CdS core–shell nanowires

2014 ◽  
Vol 16 (5) ◽  
Author(s):  
Yukai Shan ◽  
Zhen Xiao ◽  
Yongming Chuan ◽  
Hongli Li ◽  
Minglong Yuan ◽  
...  
Keyword(s):  
Core Shell ◽  
One Pot ◽  
Aqueous Synthesis ◽  
Shell Nanowires

scholarly journals SnO2 -SiO2 1D Core-Shell Nanowires Heterostructures for Selective Hydrogen Sensing

2021 ◽  
Author(s):  
Muhammad Hamid Raza ◽  
Navpreet Kaur ◽  
Elisabetta Comini ◽  
Nicola Pinna
Keyword(s):  
Shell Thickness ◽  
High Surface ◽  
Depletion Layer ◽  
Masking Effect ◽  
Electronic Coupling ◽  
Core Shell ◽  
Dramatic Improvement ◽  
Shell Layer ◽  
Sio2 Shell ◽  
Shell Nanowires

SnO2 is one of the most employed n-type semiconducting metal oxide (SMOX) in chemo-resistive gas-sensing although it presents serious limitations due to a low selectivity. Herein, we introduce one-dimensional (1D) SnO2-SiO2 core-shell nanowires (CSNWs). SnO2 nanowires (NWs) are synthesized by vapor–liquid–solid deposition and the amorphous SiO2-shell layer with varying thicknesses (1.8-10.5 nm) was grown by atomic layer deposition (ALD). SiO2-coated SnO2 CSNWs show lower baseline conductance as compared to the Pristine SnO2 NWs, due to an enhancement of the electron depletion layer. The SnO2-SiO2/N CSNWs (N representing the number of SiO 2 ALD cycles) sensors show a dramatic improvement of the selectivity towards hydrogen. Moreover, the sensing-response markedly depends on the thickness of the SiO2-shell layer and the working temperature. The SnO2-SiO2/60 CSNWs sensor (ca. 4.8 nm SiO2 shell thickness) was the best performing sensor in terms of selectivity and sensitivity exhibiting a response of 160 (ca. 7-folds higher than the pristine SnO2 NWs) towards 500 ppm of hydrogen at 500 °C with a lower detection limit at ppb-level (0.082 ppm). The selectivity and enhanced sensing-response are related to the masking effect of the SiO2 shell and an increased in the width of the electron depletion layer due to the strong electronic coupling between the SnO2 core and SiO2-shell layer, respectively. The remarkable sensing performances of the SnO2-SiO2/N CSNWs can be attributed to the homogeneous and conformal SiO2 shell layer by ALD,<br>electronic coupling between the core and the shell, the optimized shell thickness and high surface area provided by the 1D SnO2 NWs network.<br>

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