Ceramic sol–gel composite coatings for electrical insulation

Olding, T; Sayer, M.; Barrow, David A.

doi:10.1016/s0040-6090(01)01322-0

Cited by 134 publications

(63 citation statements)

References 3 publications

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“…metal alkoxide) and subsequent formation of the gel, which results in a crystalline network structure after heat treatment. The sol-gel technique provides many advantages over conventional methods such as low processing temperature, homogeneity, possibility of coating on large area substrates, and cost effective [8,9]. Furthermore, incorporating TiO 2 nanoparticles as nanofillers into titanium alkoxide solution to form nanocomposite film has been proved to be a promising technique to prepare TiO 2 coatings for photocatalytic applications such as water and air purification as well as dye sensitized solar cells [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic properties of TiO2 sol–gel modified nanocomposite films

Eshaghi

Mozaffarinia²,

Pakshir³

et al. 2011

Ceramics International

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Section: Introductionmentioning

confidence: 99%

Photocatalytic properties of TiO2 sol–gel modified nanocomposite films

Eshaghi

Mozaffarinia²,

Pakshir³

et al. 2011

Ceramics International

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“…Using structured reactors, such as monoliths, foams or cellular structures for catalysis involves in most cases the coating of a catalytic active layer onto the reactor through deposition processes like chemical vapour deposition, [46][47][48] atomic or electrophoretic particle deposition, 49,50 and spray- [51][52][53][54] or dipcoating. [55][56][57] Typical thicknesses of catalytic active layers on monoliths range from a few microns up to 500 mm.…”

Section: 43-45mentioning

confidence: 99%

Efficient hydrogen release from perhydro-N-ethylcarbazole using catalyst-coated metallic structures produced by selective electron beam melting

Peters

Eypasch

Frank

et al. 2015

Energy Environ. Sci.

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A particularly suitable reactor concept for the continuous dehydrogenation of perhydro-Nethylcarbazole in the context of hydrogen and energy storage applications is described. The concept addresses the fact that dehydrogenation is a highly endothermic gas evolution reaction.Thus, for efficient dehydrogenation a significant amount of reaction heat has to be provided to a reactor that is essentially full of gas. This particular challenge is addressed in our study by the use of a catalyst-coated (Pt on alumina), structured metal reactor obtained by selective electron beam melting. The so-obtained reactor was tested both as a single tube set-up and as a Hydrogen Release Unit (HRU) with ten parallel reactors. In stationary operation, the HRU realized a hydrogen release capacity of 1.75 kW therm (960 W el in a subsequent fuel cell) with up to 1.12 g H 2 min À1 g Pt À1and a power density of 4.32 kW el L À1 of HRU reactor. Broader contextThe conversion of our current energy system to a hydrogen-based one requires effective ways to store hydrogen in large amounts over long periods of time using existing infrastructures. Liquid Organic Hydrogen Carrier systems, such as e.g. perhydro-N-ethyl carbazole (H12-NEC)/N-ethyl carbazole (NEC), have the potential to substitute step-by-step liquid fossil fuels as they have attractive energy densities and diesel-like handling. Hydrogen release from H 2 -rich LOHC systems allows the on-demand utilization of regenerative energy equivalents at any time and at any place. However, the hydrogen release from H 2 -rich LOHC systems is challenging due to the endothermic nature of the dehydrogenation reaction combined with the large volume expansion of the reaction mixture. Our contribution shows that 3-D-structured metallic reactors produced via selective electron beam melting and coated with Pt on alumina represent very suitable and efficient dehydrogenation reactors for this catalytic dehydrogenation reaction. Using such reactors, we could demonstrate a power density of up to 4.32 kW el L À1in the dehydrogenation reaction (assuming a fuel cell efficiency of 55%). The system stability and reproducibility of the dehydrogenation results were found to be excellent over 48 h time-on-stream.

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“…In spite of its advantages, sol-gel technique will never reach its full potential due to some limitations, e.g., poor coating adhesion, low wear-resistance, involvement of liquid media that could impede the multilayer assembling (affect interfaces), high permeability, limit of the maximum coating thickness (~0.5 µm) [72], and difficulties in controlling porosity. On the other hand, a thick organic coating often results in failure during thermal process.…”

Section: This Chapter Introduces An Innovative Solution For the Synthmentioning

confidence: 99%

Biopolymer Thin Films Synthesized by Advanced Pulsed Laser Techniques

Axente¹,

Sima²,

Ristoscu³

et al. 2016

Recent Advances in Biopolymers

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This chapter provides an overview of recent advances in the field of laser-based synthesis of biopolymer thin films for biomedical applications. The introduction addresses the importance of biopolymer thin films with respect to several applications like tissue engineering, cell instructive environments, and drug delivery systems. The next section is devoted to applications of the fabrication of organic and hybrid organic-inorganic coatings. Matrix-assisted pulsed laser evaporation (MAPLE) and Combinatorial-MAPLE are introduced and compared with other conventional methods of thin films assembling on solid substrates. Advantages and limitations of the methods are pointed out by focusing on the delicate transfer of bio-macromolecules, preservation of properties and on the prospect of combinatorial libraries' synthesis in a single-step process. The following section provides a brief description of fundamental processes involved in the molecular transfer of delicate materials by MAPLE. Then, the chapter focuses on the laser synthesis of two polysaccharide thin films, namely Dextran doped with iron oxide nanoparticles and Levan, followed by an overview on the MAPLE synthesis of other biopolymers. The chapter ends with summary and perspectives of this fast-expanding research field, and a rich bibliographic database.

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Ceramic sol–gel composite coatings for electrical insulation

Cited by 134 publications

References 3 publications

Photocatalytic properties of TiO2 sol–gel modified nanocomposite films

Photocatalytic properties of TiO2 sol–gel modified nanocomposite films

Efficient hydrogen release from perhydro-N-ethylcarbazole using catalyst-coated metallic structures produced by selective electron beam melting

Biopolymer Thin Films Synthesized by Advanced Pulsed Laser Techniques

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