scholarly journals Polymer–Inorganic Core–Shell Nanofibers by Electrospinning and Atomic Layer Deposition: Flexible Nylon–ZnO Core–Shell Nanofiber Mats and Their Photocatalytic Activity

2012 ◽  
Vol 4 (11) ◽  
pp. 6185-6194 ◽  
Author(s):  
Fatma Kayaci ◽  
Cagla Ozgit-Akgun ◽  
Inci Donmez ◽  
Necmi Biyikli ◽  
Tamer Uyar
Keyword(s):  
Photocatalytic Activity ◽  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Core Shell ◽  
Layer Deposition ◽  
Nanofiber Mats

scholarly journals Photocatalytically Active Amorphous and Crystalline TiO2 Prepared by Atomic Layer Deposition

2019 ◽  
Author(s):  
Orsolya Kéri ◽  
Lenke Kócs ◽  
Zoltán Hórvölgyi ◽  
Zsófia Baji ◽  
Krisztina László ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Amorphous Sio2 ◽  
Methylene Orange ◽  
Layer Deposition ◽  
Vis Spectroscopy ◽  
Amorphous Al2o3

In this work, the photocatalytic properties of amorphous and crystalline TiO2 deposited on oxide and polymer nanoparticles by atomic layer deposition (ALD) were studied. Beside TiO2, as reference, both ALD grown amorphous Al2O3 and crystalline ZnO layers were also examined. When choosing the carrier, the priority was that it had no effect on the photocatalytic activity of TiO2; therefore the oxide layers were deposited on SiO2 and poly(methyl-methacrylate) (PMMA) nanoparticles. The amorphous SiO2 particles were synthetized by the Stöber method, while the PMMA particles were prepared by emulsion polymerization. Both the bare and core/shell composite nanoparticles were investigated by SEM-EDX, TEM, FT-IR, and XRD. Finally, the photocatalytic activity of PMMA, SiO2 and the core/shell nanoparticles was measured by the decomposition of methylene orange, monitored by UV-Vis spectroscopy. Based on the results, the SiO2 was uniformly coated with the deposited oxide films, while in the case of the PMMA a contiguous web-like polymer/TiO2 matrix was formed. During the photocatalytic reactions, the amorphous Al2O3 was not active, while the crystalline ZnO and TiO2 showed good photocatalytic activity. The amorphous TiO2 deposited by ALD on the SiO2 and PMMA nanoparticles had smaller, but a clearly detectable photocatalytic effect on the photodegradation of methylene orange.

scholarly journals Synthesis of Ag-ZnO core-shell nanoparticles with enhanced photocatalytic activity through atomic layer deposition

2019 ◽  
Vol 177 ◽  
pp. 107831 ◽  
Author(s):  
Sejong Seong ◽  
In-Sung Park ◽  
Yong Chan Jung ◽  
Taehoon Lee ◽  
Seon Yong Kim ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Layer Deposition ◽  
Core Shell Nanoparticles

One-Dimensional TiO2@GaON Core-Shell Nanowires with Controlled Shell Thickness from Atomic Layer Deposition for Stable and Efficient Photoelectrochemical Water Splitting

2019 ◽  
Author(s):  
Jiajia Tao ◽  
Hong-Ping Ma ◽  
Kaiping Yuan ◽  
Yang Gu ◽  
Jianwei Lian ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Band Gap ◽  
Water Splitting ◽  
Atomic Layer ◽  
Photoelectrochemical Water Splitting ◽  
Core Shell ◽  
Photoelectrochemical Performance ◽  
Highly Efficient ◽  
Layer Deposition ◽  
Shell Nanowires

<div>As a promising oxygen evolution reaction semiconductor, TiO2 has been extensively investigated for solar photoelectrochemical water splitting. Here, a highly efficient and stable strategy for rationally preparing GaON cocatalysts on TiO2 by atomic layer deposition is demonstrated, which we show significantly enhances the</div><div>photoelectrochemical performance compared to TiO2-based photoanodes. For TiO2@20 nm-GaON core-shell nanowires a photocurrent density up to 1.10 mA cm-2 (1.23 V vs RHE) under AM 1.5 G irradiation (100 mW cm-2) has been achieved, which is 14 times higher than that of TiO2 NWs. Furthermore, the oxygen vacancy formation on GaON as well as the band gap matching with TiO2 not only provides more active sites for water oxidation but also enhances light absorption to promote interfacial charge separation and migration. Density functional theory studies of model systems of GaON-modified TiO2 confirm the band gap reduction, high reducibility and ability to activate water. The highly efficient and stable systems of TiO2@GaON core-shell nanowires provide a deeper understanding and universal strategy for enhancing photoelectrochemical performance of photoanodes now available. </div>

Nitrogen-doped ZnO/n-Si core–shell nanowire photodiode prepared by atomic layer deposition

2015 ◽  
Vol 33 ◽  
pp. 154-160 ◽  
Author(s):  
Kyung Yong Ko ◽  
Hyemin Kang ◽  
Wonseon Lee ◽  
Chang-Wan Lee ◽  
Jusang Park ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Core Shell ◽  
Nitrogen Doped ◽  
Layer Deposition ◽  
Doped Zno

Atomic layer deposition synthesis of platinum–tungsten carbide core–shell catalysts for the hydrogen evolution reaction

2012 ◽  
Vol 48 (7) ◽  
pp. 1063-1065 ◽  
Author(s):  
Irene J. Hsu ◽  
Yannick C. Kimmel ◽  
Xiaoqiang Jiang ◽  
Brian G. Willis ◽  
Jingguang G. Chen
Keyword(s):  
Atomic Layer Deposition ◽  
Tungsten Carbide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Atomic Layer ◽  
Core Shell ◽  
Layer Deposition

Atomic layer deposition-triggered hierarchical core/shell stable bifunctional electrocatalysts for overall water splitting

2021 ◽  
Vol 9 (37) ◽  
pp. 21132-21141
Author(s):  
T. Kavinkumar ◽  
Selvaraj Seenivasan ◽  
Hyeonjung Jung ◽  
Jeong Woo Han ◽  
Do-Heyoung Kim
Keyword(s):  
Surface Modification ◽  
Atomic Layer Deposition ◽  
Water Splitting ◽  
Atomic Layer ◽  
Core Shell ◽  
Interface Engineering ◽  
Bifunctional Electrocatalyst ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts ◽  
Layer Deposition

A synergistic strategy of interface engineering and surface modification is efficient to construct a promising bifunctional electrocatalyst for enhanced electrocatalytic water splitting.

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