Electrophoretic Deposition

A special issue of Coatings (ISSN 2079-6412).

Deadline for manuscript submissions: closed (31 December 2017) | Viewed by 41609

Special Issue Editors

Colloids & Materials Chemistry Department, Institute of Minerals & Materials Technology (IMMT), Acharya Vihar, Bhubaneswar 751013, Orissa, India
Instituto de Cerámica y Vidrio, CSIC; c/Kelsen 5, Madrid, 28049, Spain

Special Issue Information

Dear Colleagues,

Assembly strategies (shaping, compaction, and sintering processes) have become key steps in the manufacturing of surface functionalized materials in order to achieve novel properties and functionalities. In this context, Electrophoretic Deposition (EPD) continues to gain interest in the shaping of inorganic–organic particles at any scale (from macroscopic dimensions to nanometers). EPD allows manipulation of the compaction and ordering of any charged entity present in stable suspensions under the application of external electric fields. Fine-tuning of the surface charge of suspended particles, and their interactions with molecules in solution, coupled with the subsequent compaction driven by an electrical force, represent the fundamental processes of EPD. The technique is currently considered a versatile, cost-effective method for the preparation of coatings and thin and thick films, from organic and inorganic materials, and their combinations are useful for a broad range of applications. This technique can, therefore, be used to meet a variety of challenges facing materials science and technology in the healthcare, energy, and transport fields.

For this Special Issue, we are inviting papers in the general field of EPD as a processing technique for the development of inorganic, organic, and hybrid coatings. Topics of interest for this Special Issue include, but are not limited to:

  • Novel experimental setups for EPD
  • Substrate surface treatments and coatings by EPD
  • Colloidal chemistry knowledge in EPD
  • Microstructure design tools applied to EPD coatings
  • Nanostructured coatings by EPD
  • EPD for corrosion or oxidation protective coatings
  • EPD coatings in biofunctionalization of surfaces
  • EPD coatings in energy storage and generation devices
  • EPD coatings in optoeletronic and magnetic devices and sensors
  • EPD in additive manufacturing of patterns

Prof. Dr. Aldo R. Boccaccini
Prof. Dr. Begoña Ferrari
Prof. Dr. Laxmidhar Besra
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Coatings is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Electrophoretic deposition

  • Colloidal chemistry

  • Electro-dynamics

  • Ceramic coatings

  • Metallic coatings

  • Composite coatings

  • Hybrid coatings

  • Particles assembly

Published Papers (5 papers)

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Research

12 pages, 17417 KiB  
Article
Bioactive and Antibacterial Coatings Based on Zein/Bioactive Glass Composites by Electrophoretic Deposition
by Nima Meyer, Laura Ramos Rivera, Tim Ellis, Jiahui Qi, Mary P. Ryan and Aldo R. Boccaccini
Coatings 2018, 8(1), 27; https://doi.org/10.3390/coatings8010027 - 08 Jan 2018
Cited by 32 | Viewed by 7347
Abstract
This study investigated the electrophoretic deposition (EPD) of the natural polymer zein combined with bioactive glass (BG) particles. Through the deposition of various BG compositions, namely 45S5 BG and Cu-doped BG, this work sought to demonstrate the ability of the films to potentiate [...] Read more.
This study investigated the electrophoretic deposition (EPD) of the natural polymer zein combined with bioactive glass (BG) particles. Through the deposition of various BG compositions, namely 45S5 BG and Cu-doped BG, this work sought to demonstrate the ability of the films to potentiate the formation of hydroxyapatite (HA) in contact with simulated body fluid (SBF). Following incubation in SBF, the physical and chemical surface properties of the EPD films were evaluated using different characterization techniques. The formation of HA at the surface of the coatings following immersion in SBF was confirmed using Fourier transform infrared spectroscopy (FTIR). The results demonstrated HA formation in all coatings after seven days of immersion in SBF. Coating morphology and degradation of the zein films were characterized using environmental scanning electron microscopy (ESEM). The results confirmed EPD as a very convenient room temperature technique for production of ion releasing, bioactive, and antibacterial coatings for potential application in orthopedics. Full article
(This article belongs to the Special Issue Electrophoretic Deposition)
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3364 KiB  
Article
Graphene Coating on Copper by Electrophoretic Deposition for Corrosion Prevention
by N. Usha Kiran, Sanjukta Dey, Bimal P. Singh and Laxmidhar Besra
Coatings 2017, 7(12), 214; https://doi.org/10.3390/coatings7120214 - 30 Nov 2017
Cited by 71 | Viewed by 15223
Abstract
In this paper, we report the use of a simple and inexpensive electrophoretic deposition (EPD) technique to develop thin, uniform, and transparent graphene oxide (GO) coating on copper (Cu) substrate on application of 10 V for 1 s from an aqueous suspension containing [...] Read more.
In this paper, we report the use of a simple and inexpensive electrophoretic deposition (EPD) technique to develop thin, uniform, and transparent graphene oxide (GO) coating on copper (Cu) substrate on application of 10 V for 1 s from an aqueous suspension containing 0.03 wt % graphene oxide. GO was partially reduced during the EPD process itself. The GO coated on Cu was completely reduced chemically by using sodium borohydride (NaBH4) solution. The coatings were characterized by field emission scanning electron microscope (FESEM), Raman spectroscopy, Fourier-transform infrared spectroscopy (FTIR), XRD, and UV/VIS spectrophotometry. Corrosion resistance of the coatings was evaluated by electrochemical measurements under accelerated corrosion condition in 3.5 wt % NaCl solution. The GO coated on Cu and chemically reduced by NaBH4 showed more positive corrosion potential (Ecorr) (−145.4 mV) compared to GO coated on Cu (−182.2 mV) and bare Cu (−235.3 mV), and much lower corrosion current (Icorr) (7.01 µA/cm2) when compared to 15.375 µA/cm2 for bare Cu indicating that reduced GO film on copper exhibit enhanced corrosion resistance. The corrosion inhibition efficiency of chemically reduced GO coated Cu was 54.40%, and its corrosion rate was 0.08 mm/year as compared to 0.18 mm/year for bare copper. Full article
(This article belongs to the Special Issue Electrophoretic Deposition)
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5163 KiB  
Article
In Situ Synthesis and Electrophoretic Deposition of NiO/Ni Core-Shell Nanoparticles and Its Application as Pseudocapacitor
by Joaquin Yus, Begoña Ferrari, Antonio Javier Sanchez-Herencia, Alvaro Caballero, Julian Morales and Zoilo Gonzalez
Coatings 2017, 7(11), 193; https://doi.org/10.3390/coatings7110193 - 08 Nov 2017
Cited by 14 | Viewed by 6347
Abstract
A simple, low cost and transferable colloidal processing method and the subsequent heat treatment has been optimized to prepare binder-free electrodes for their application in supercapacitors. NiO/Ni core–shell hybrid nanostructures have been synthetized by heterogeneous precipitation of metallic Ni nanospheres onto NiO nanoplatelets [...] Read more.
A simple, low cost and transferable colloidal processing method and the subsequent heat treatment has been optimized to prepare binder-free electrodes for their application in supercapacitors. NiO/Ni core–shell hybrid nanostructures have been synthetized by heterogeneous precipitation of metallic Ni nanospheres onto NiO nanoplatelets as seed surfaces. The electrophoretic deposition (EPD) has been used to shape the electroactive material onto 3D substrates such as Ni foams. The method has allowed us to control the growth and the homogeneity of the NiO/Ni coatings. The presence of metallic Nickel in the microstructure and the optimization of the thermal treatment have brought several improvements in the electrochemical response due to the connectivity of the final microstructure. The highest specific capacitance value has been obtained using a thermal treatment of 325 °C during 1 h in Argon. At this temperature, necks formed among ceramic-metallic nanoparticles preserve the structural integrity of the microstructure avoiding the employment of binders to enhance their connectivity. Thus, a compromise between porosity and connectivity should be established to improve electrochemical performance. Full article
(This article belongs to the Special Issue Electrophoretic Deposition)
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3958 KiB  
Article
Particle Velocities near and along the Electrode during Electrophoretic Deposition: Influence of Surfactant Counter-Ions
by Claudine Filiâtre, Céline Pignolet and Cédric C. Buron
Coatings 2017, 7(9), 147; https://doi.org/10.3390/coatings7090147 - 14 Sep 2017
Cited by 1 | Viewed by 4426
Abstract
Research into the micro-nanostructured coatings process has made a variety of new applications available. Electrophoretic deposition (EPD) is an efficient and attractive technique to produce coated materials. Therefore the understanding of the formation and growth mechanism of the coating process continues to be [...] Read more.
Research into the micro-nanostructured coatings process has made a variety of new applications available. Electrophoretic deposition (EPD) is an efficient and attractive technique to produce coated materials. Therefore the understanding of the formation and growth mechanism of the coating process continues to be investigated. In this study, a home-made EPD laminar flow cell was used for in-situ investigation of the particle velocity and deposition of micronic particles on a cathode. Monodisperse polystyrene latex particles were functionalized with cationic surfactants: cetyltrimethyl ammonium bromide (CTAB) or cetyltrimethyl ammonium chloride (CTAC). The tangential velocity of the particles when they migrated to the electrode, the approach angle and the tangential velocity along the electrode were measured under a DC electric field. From the values of the velocities, the particle-electrode distance was evaluated in CTAB and CTAC solutions. The electrophoretic velocity was calculated from the electrophoretic mobility of the particles and the electric field applied to the particles. All these parameters depend on the type of surfactant counter-ions and influence the growth of the coating. Dense structures were obtained in CTAB solution while open structures were observed in CTAC solution. Full article
(This article belongs to the Special Issue Electrophoretic Deposition)
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6101 KiB  
Article
Electrophoretic Coating of Octahedral Molybdenum Metal Clusters for UV/NIR Light Screening
by Thi Kim Ngan Nguyen, Benjamin Dierre, Fabien Grasset, Noée Dumait, Stéphane Cordier, Pierric Lemoine, Adèle Renaud, Hiroshi Fudouzi, Naoki Ohashi and Tetsuo Uchikoshi
Coatings 2017, 7(8), 114; https://doi.org/10.3390/coatings7080114 - 03 Aug 2017
Cited by 13 | Viewed by 6457
Abstract
Thin and transparent Mo6 cluster films with significant optical properties were prepared on indium tin oxide (ITO)-coated glass plates from the suspension of Cs2Mo6Br14 cluster precursors dispersed in methyl-ethyl-ketone (MEK) by an electrophoretic deposition (EPD) process. Two [...] Read more.
Thin and transparent Mo6 cluster films with significant optical properties were prepared on indium tin oxide (ITO)-coated glass plates from the suspension of Cs2Mo6Br14 cluster precursors dispersed in methyl-ethyl-ketone (MEK) by an electrophoretic deposition (EPD) process. Two kinds of polydimethylsiloxanes (PDMS); i.e., KF-96L-1.5CS and KF-96L-2CS corresponding to the kinetic viscosity of 1.5 and 2 centistokes, respectively, were selected to topcoat the Mo6 cluster film after the EPD. The influence of the PDMS on the durability, chemical compatibility and light absorption property of Mo6 cluster films were characterized by means of field-emission scanning electron microscopy (FE-SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), and ultraviolet-visible-near infrared (UV-Vis-NIR) spectroscopy. The stabilized PDMS-coated Mo6 cluster film could be stored for more than 6 months under ambient conditions. Full article
(This article belongs to the Special Issue Electrophoretic Deposition)
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