Core-Shell Nanorods for Efficient Photoelectrochemical Hydrogen Production

2005 ◽  
Vol 885 ◽  
Author(s):  
Z. G. Yu ◽  
C. E. Pryor ◽  
W. H. Lau ◽  
M. A. Berding ◽  
D. B. MacQueen
Keyword(s):  
Wave Function ◽  
Hydrogen Production ◽  
Systematic Study ◽  
Quantum Confinement ◽  
Shell Thickness ◽  
Considerable Extent ◽  
Core Shell ◽  
Core Radius ◽  
Photoelectrochemical Hydrogen Production ◽  
Strain Dependent

ABSTRACTWe propose core-shell InP-CdS and InP-ZnTe nanorods as photoelectrodes in the efficient photoelectrochemical hydrogen production. Based on our systematic study using strain-dependent k.p theory, we find that in these heterostructures both energies and wave-function distributions of electrons and holes can be favorably tailored to a considerable extent by exploiting the interplay between quantum confinement and strain. Consequently, these core-shell nanorods with proper dimensions (height, core radius, and shell thickness) can simultaneously satisfy all criteria for effective photoelectrodes in solar-based hydrogen production.

A p-Si/NiCoSex core/shell nanopillar array photocathode for enhanced photoelectrochemical hydrogen production

2016 ◽  
Vol 9 (10) ◽  
pp. 3113-3119 ◽  
Author(s):  
Hongxiu Zhang ◽  
Qi Ding ◽  
Denghong He ◽  
Hu Liu ◽  
Wei Liu ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Rational Design ◽  
Hydrogen Generation ◽  
Core Shell ◽  
Photoelectrochemical Hydrogen Production

We report the rational design and successful preparation of p-Si/NiCoSex core/shell nanopillar array photocathodes for enhanced solar-driven photoelectrochemical hydrogen generation.

scholarly journals Quantum Confinement Effect and Photoenhancement of Photoluminescence of PbS and PbS/MnS Quantum Dots

2020 ◽  
Vol 10 (18) ◽  
pp. 6282
Author(s):  
Muhammad Safwan Zaini ◽  
Josephine Ying Chyi Liew ◽  
Shahrul Ainliah Alang Ahmad ◽  
Abdul Rahman Mohmad ◽  
Mazliana Ahmad Kamarudin
Keyword(s):  
Aqueous Solution ◽  
Quantum Dots ◽  
Quantum Confinement ◽  
Shell Thickness ◽  
Quantum Confinement Effect ◽  
Band Gap Energy ◽  
Confinement Effect ◽  
Core Shell ◽  
Lead Sulphide ◽  
Peak Energy

The quantum confinement effect and photoenhancement of photoluminescence (PL) of lead sulphide (PbS) quantum dots (QDs) and lead sulphide/manganese sulphide (PbS/MnS) core shell QDs capped with thiol ligands in aqueous solution were investigated. From PL results, the presence of MnS shells gives a strong confinement effect which translates to higher emission energy in PbS/MnS core shell QDs. Increasing MnS shell thickness from 0.3 to 1.5 monolayers (ML) causes a blueshift of PL peak energies as the charge carriers concentrated in the PbS core region. Enhancement of the PL intensity of colloidal PbS and PbS/MnS core shell QDs has been observed when the samples are illuminated above the band gap energy, under continuous irradiation for 40 min. Luminescence from PbS QDs and PbS/MnS core shell QDs can be strongly influenced by the interaction of water molecules and oxygen present in aqueous solution adsorbed on the QD surface. However, PbS/MnS core shell QDs with a shell thickness of 1.5 ML did not show a PL peak energy stability as it was redshifted after 25 min, probably due to wider size distribution of the QDs.

Electrochemically controlled CdS@CdSe nanoparticles on ITO@TiO2 dual core–shell nanowires for enhanced photoelectrochemical hydrogen production

2020 ◽  
Vol 505 ◽  
pp. 144569
Author(s):  
Yoonjun Cho ◽  
Minjeong Park ◽  
Jung Kyu Kim ◽  
Sungsoon Kim ◽  
Hyun Suk Jung ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Cdse Nanoparticles ◽  
Core Shell ◽  
Photoelectrochemical Hydrogen Production ◽  
Dual Core ◽  
Shell Nanowires

Core−Shell Nanorods for Efficient Photoelectrochemical Hydrogen Production

2005 ◽  
Vol 109 (48) ◽  
pp. 22913-22919 ◽  
Author(s):  
Z. G. Yu ◽  
C. E. Pryor ◽  
W. H. Lau ◽  
M. A. Berding ◽  
D. B. MacQueen
Keyword(s):  
Hydrogen Production ◽  
Core Shell ◽  
Photoelectrochemical Hydrogen Production

scholarly journals Optimised photocatalytic hydrogen production using core–shell AuPd promoters with controlled shell thickness

2014 ◽  
Vol 16 (48) ◽  
pp. 26638-26644 ◽  
Author(s):  
Wilm Jones ◽  
Ren Su ◽  
Peter P. Wells ◽  
Yanbin Shen ◽  
Nikolaos Dimitratos ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Hydrogen Production ◽  
Shell Thickness ◽  
Core Shell ◽  
Photocatalytic Hydrogen Production ◽  
Core Promoters

AuPd shell–Au core promoters with controlled shell thickness supported on titanium dioxide improve the photocatalytic hydrogen production.

Heterostructured quantum dot architectures for efficient and stable photoelectrochemical hydrogen production

2018 ◽  
Vol 6 (16) ◽  
pp. 6822-6829 ◽  
Author(s):  
Rajesh Adhikari ◽  
Kaustubh Basu ◽  
Yufeng Zhou ◽  
Fiorenzo Vetrone ◽  
Dongling Ma ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrogen Production ◽  
Quantum Dot ◽  
Core Shell ◽  
Solar Hydrogen ◽  
Solar Hydrogen Production ◽  
Photoelectrochemical Hydrogen Production

Heterostructured core/shell quantum dots are designed to boost performance of quantum dot sensitized photoanodes for photoelectrochemical solar hydrogen production.

scholarly journals GaP/GaPN core/shell nanowire array on silicon for enhanced photoelectrochemical hydrogen production

2020 ◽  
Vol 41 (1) ◽  
pp. 2-8 ◽  
Author(s):  
Guancai Xie ◽  
Saad Ullah Jan ◽  
Zejian Dong ◽  
Yawen Dai ◽  
Rajender Boddula ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Nanowire Array ◽  
Core Shell ◽  
Photoelectrochemical Hydrogen Production

Effect of component volume ratio on the absorption spectra of Ag@Fe3O4 core–shell nanoparticles

2019 ◽  
Vol 33 (07) ◽  
pp. 1950071
Author(s):  
Weichun Zhang ◽  
Jiyu Fan
Keyword(s):  
Electric Field ◽  
Plasmon Resonance ◽  
Ag Nanoparticles ◽  
Shell Thickness ◽  
Outer Shell ◽  
Core Shell ◽  
Core Radius ◽  
Shell Nanoparticles ◽  
Structural Variables ◽  
Core Shell Nanoparticles

In this paper, we study the absorption efficiency spectra and electric field distribution of Ag nanoparticles enveloped with [Formula: see text] nanoshell by applying the discrete dipole approximation theory. Three kinds of [Formula: see text] core–shell nanoparticles (NPs) structural variables, including the same core with different shell thickness, the same outer shell with different core radius, and the same size of total radius have been discussed in detail. The simulated results show that the localized surface plasmon resonance (LSPR) peak wavelength of NPs is linearly proportional with the volume fraction of the shell, regardless of the outer shell material property and one structural variable. Compared to the plasmon resonance peak of the Ag nanoparticles, the LSPR shift of the NPs is dependent on both the total particles size and the outer [Formula: see text] shell thickness. The electric field around the surface of NPs becomes weaker under the same damping when the core radius decreases. Based on the plasmonic characteristics revealed in this study, it is suggested that it would provide some key guidances for designing the future NPs structural variables for a broad range of plasmon applications.

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