Atomic-Layer Electroless Deposition: A Scalable Approach to Surface-Modified Metal Powders

Langmuir ◽  
2014 ◽  
Vol 30 (16) ◽  
pp. 4820-4829 ◽  
Author(s):  
Patrick J. Cappillino ◽  
Joshua D. Sugar ◽  
Farid El Gabaly ◽  
Trevor Y. Cai ◽  
Zhi Liu ◽  
...  
Keyword(s):  
Electroless Deposition ◽  
Atomic Layer ◽  
Metal Powders ◽  
Surface Modified

scholarly journals Electrochemical Evaluation of Surface Modified Free-Standing CNT Electrode for Li–O2 Battery Cathode

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4196
Author(s):  
Ji Hyeon Lee ◽  
Hyun Wook Jung ◽  
In Soo Kim ◽  
Min Park ◽  
Hyung-Seok Kim
Keyword(s):  
Functional Groups ◽  
Atomic Layer ◽  
Free Standing ◽  
Coating Technology ◽  
Oxygen Functional Groups ◽  
Layer Deposition ◽  
Discharge Product ◽  
Effect Of Oxygen ◽  
Surface Modified ◽  
Electrochemical Evaluation

In this study, carbon nanotubes (CNTs) were used as cathodes for lithium–oxygen (Li–O2) batteries to confirm the effect of oxygen functional groups present on the CNT surface on Li–O2 battery performance. A coating technology using atomic layer deposition was introduced to remove the oxygen functional groups present on the CNT surface, and ZnO without catalytic properties was adopted as a coating material to exclude the effect of catalytic reaction. An acid treatment process (H2SO4:HNO3 = 3:1) was conducted to increase the oxygen functional groups of the existing CNTs. Therefore, it was confirmed that ZnO@CNT with reduced oxygen functional groups lowered the charging overpotential by approximately 230 mV and increased the yield of Li2O2, a discharge product, by approximately 13%. Hence, we can conclude that the ZnO@CNT is suitable as a cathode material for Li–O2 batteries.

Carbon Materials for Immobilization of Biologically Active Substances

2020 ◽  
Vol 836 ◽  
pp. 52-57
Author(s):  
O.V. Denisova ◽  
I.I. Rastvorova
Keyword(s):  
Carbon Fibers ◽  
Carbon Materials ◽  
Atomic Layer ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Layer Deposition ◽  
Atomic Layer Deposition Method ◽  
Activity Of Enzymes ◽  
Surface Modified ◽  
Active Substances

The paper considers applications of carbon materials as carriers of biologically active substances. The atomic layer deposition method allowed chemically synthesizing surface-modified composite materials based on graphite and carbon fibers, which maximally preserved the activity of enzymes and biologically active substances. It is shown that the activity of a biologically active substance depends on the chemical composition and state of the surface of carbon-based carriers.

Behavior of La0.6sr 0.4Co0.2Fe0.2O3-  Cathode Powders Surface Modified by Atomic Layer Deposition for Solid Oxide Fuel Cells

2016 ◽  
Vol 75 (6) ◽  
pp. 195-202 ◽  
Author(s):  
J. F. Roeder ◽  
A. F. Zeberoff ◽  
P. C. Van Buskirk ◽  
A. Torabi ◽  
J. Barton ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Atomic Layer Deposition ◽  
Solid Oxide Fuel Cells ◽  
Atomic Layer ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Layer Deposition ◽  
Surface Modified

scholarly journals Modern Technologies for Producing Foamed Phosphate Glass for Oil Sorbents

2022 ◽  
Author(s):  
K.G. Karapetyan
Keyword(s):  
Composite Materials ◽  
Carbon Fibers ◽  
Temperature Stability ◽  
Atomic Layer ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Synthesis Process ◽  
Before And After ◽  
Surface Modified ◽  
Active Substances

Abstract. The paper considers applications of foamed glassy phosphate materials as carriers of biologically active substances. The atomic layer deposition method allowed chemically synthesizing surface-modified composite materials based on graphite and carbon fibers, which maximally preserved the activity of enzymes and biologically active substances. The synthesis process of a mono-layer titanium-containing coating on the surface of graphite and carbon fibers by processing them with TiCl4 vapors is considered. The main characteristics of the graphite surface before and after modification and characteristics of the porous structure and surface of carbon fibers are obtained. Biologically active substances by adsorption from a solution to the surface of both the original and modified carriers were applied. biological activity and temperature stability of the obtained composite materials were studied. It is shown that the activity of a biologically active substance depends on the chemical composition and state of the surface of carbon-based carriers.

scholarly journals P040 INFLAMMATORY REACTION TO ALD COATED POLYPROPYLENE MESHES USED FOR HERNIA REPIAR. AN EXPERIMENTAL STUDY IN ANIMALS

2021 ◽  
Vol 108 (Supplement_8) ◽  
Author(s):  
Magomed Khamidov ◽  
Ragimov Razin ◽  
Abay Maksumova ◽  
Naida Abdullaeva ◽  
Zeinab Gasanbekova ◽  
...  
Keyword(s):  
Inflammatory Reaction ◽  
High Performance ◽  
Soft Tissues ◽  
Atomic Layer ◽  
Scar Tissue ◽  
Tissue Reaction ◽  
Surrounding Tissue ◽  
Post Surgery ◽  
Bacteria Adhesion ◽  
Surface Modified

Abstract Aim The main goal of the present work is to study and ability of Atomic Layer Depostion (ALD) ultra-thin (<100nm) ceramic films on polypropylene (PP) hernia meshes to prevent the mesh-associated infections (post-surgery complications). Material and Methods Three types of ALD nanofilms were examined: Al2O3, TiO2, or TixVyOz. 10 rats and 5 rabbits were used to evaluate the tissue reaction of surface modified PP meshes and for biomechanical (antibacterial, inflammation effect), biocompatibility, and barrier testing of the healed tissue. The ALD coated PP meshes were implanted into rabbits and rats together with uncoated ones. After 10, 20, 30 and 60 days, the hernia meshes with the surrounding soft tissues were removed and fixed for histological and cytological studies. Results The TixVyOz (28nm) film showed enhanced antibacterial activity compare to Al2O3 and TiO2 films. The histology was performed on coated and uncoated PP mesh samples. Conclusions The ALD TixVyOz film helped to avoids formation of rough scar tissue (microscale roughness, which prevents ability biofilm formation) and, reduction of eosinophilic-cell and lymphocytic-cell reactions of the tissues surrounding the mesh, illustrate good integration into the surrounding tissue with minimal inflammatory reaction and minimal adhesions to intra-abdominal structures. The ALD film was highly effective in inhibiting S. aureus and E. coli bacteria adhesion and exhibited excellent biological activity in promoting osteoblastic adhesion. Speculatively, presence of vanadyl (≡V=O:) chemical groups, either on the surface or in the bulk, believe to play a key role in high performance of the TixVyOz compare to TiO2.

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