Sol–gel surface functionalization regardless of form and type of substrate

Krzak, Justyna; Szczurek, Anna; Babiarczuk, Bartosz; Gąsiorek, Jolanta; Borak, Beata

doi:10.1016/b978-0-12-821381-0.00005-3

Cited by 18 publications

(13 citation statements)

References 118 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another question is if the physical stability of the materials can be improved without compromising the materials' P removal capacities, e.g., by Sol-Gel coating technology, which has the advantage of providing high mechanical stability [21]. Ideally, the coating should improve the physical stability of the material while still retaining the P removal ability.…”

Section: Discussionmentioning

confidence: 99%

“…The Sol-Gel coating technology seems ideal for providing new properties to porous and hydraulically unstable materials, and has proven to have a wide range of applications and to provide a simple and cost-efficient approach to functionalize different substrates and materials [20]. Sol-Gel coating provides several advantages, e.g., high mechanical stability, good adhesion to many substrates, controllable porosity, and biological inertness [21]. The intramolecular 3D-cross-linking of the Sol-Gel coating network can be fine-tuned for a given substrate and application, hence allowing penetration of, for example, P, into a porous material and at the same time, strengthen the structural integrity of the material.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Effect of Sol-Gel Coatings on the Phosphorus (P) Adsorption Capacity of Calcareous Materials for Use in Water Treatment

Jensen

Søhoel

Blaikie

et al. 2021

Water

View full text Add to dashboard Cite

(1) Phosphorus (P) removal has proven difficult in decentralized wastewater treatment systems, and P binding material, installed as an external filter, has been proposed for improving P removal. Especially, calcium (Ca)-rich materials have shown promising results. (2) Five calcareous materials were tested with isotherm batch experiments. The material with the highest P adsorption capacity was selected to undergo different Sol-Gel coatings, i.e., different coating dilution ratios (1:10, 1:5, and 1:1) and exposure periods (5, 10, and 15 min). The seven coated materials were evaluated by isotherm experiments. (3) The maximum adsorption capacity (Qmax) was determined by fitting the Langmuir equation. Qmax for the non-coated materials, and ranged from 0.7 (sand) to 35.1 (Catsan) mg P g−1 DW, while the coated materials ranged from 7.8 to 24.7 mg P g−1 DW depending on the coating. Based on the rotated Principal Component Analysis, the most important parameters for Qmax were the texture and the Ca content. (4) Catsan was the most promising material, but when performing a Sol-Gel coating, a trade-off between preserving Qmax and the coating thickness were evident, as the materials with the thinner coating preserved more of the sorption capacity. The development of P binding materials constitutes a useful technology in decentralized wastewater treatment systems.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of Sol-Gel Coatings on the Phosphorus (P) Adsorption Capacity of Calcareous Materials for Use in Water Treatment

Jensen

Søhoel

Blaikie

et al. 2021

Water

View full text Add to dashboard Cite

show abstract

“…Sol-gel coatings can be an environmentally friendly alternative to other methods of obtaining protection materials. They can have some advantages, such as high mechanical, chemical and thermal stability, biological inertness, high transparency and photostability, controllable porosity, and controlled release of the embedded agents [4]. The silane films on metals are known to inhibit corrosion, primarily by forming a hydrophobic barrier coating, which reduces the transport of water and aggressive ions to the metal-coating interface.…”

Section: Introductionmentioning

confidence: 99%

Novel Hydrophobic Nanostructured Antibacterial Coatings for Metallic Surface Protection

et al. 2022

View full text Add to dashboard Cite

A simple and cost-efficient method to modify different surfaces in order to improve their bioactivity, corrosion and wear resistance proved to be sol-gel coatings. The silane layers have been shown to be effective in the protection of steel, aluminum or magnesium alloys and copper and copper alloys. Moreover, it has been found that the adding of different inorganic nanoparticles into silica films leads to increasing their performance regarding corrosion protection. In this study, we fabricated, a simple sol-gel method, transparent mono- and bi-layered hydrophobic coatings with simultaneous antibacterial, hydrophobic and anti-corrosive properties for the protection of metallic surfaces against the action of air pollutants or from biological attacks of pathogens. The first layer (the base) of the coating contains silver (Ag) or zinc oxide (ZnO) nanoparticles with an antibacterial effect. The second layer includes zinc oxide nanoparticles with flower-like morphology to increase the hydrophobicity of the coating and to improve corrosion-resistant properties. The second layer of the coating contains a fluorinated silica derivative, 1H,1H,2H,2H-perfluorooctyl triethoxysilane (PFOTES), which contributes to the hydrophobic properties of the final coating by means of its hydrophobic groups. The mono- and bi-layered coatings with micro/nano rough structures have been applied by brushing on various substrates, including metallic surfaces (copper, brass and mild steel) and glass (microscope slides). The as-prepared coatings showed improved hydrophobic properties (water CA >90°) when compared with the untreated substrates while maintaining the transparent aspect. The corrosion resistance tests revealed significantly lower values of the corrosion rates recorded for all the protected metallic surfaces, with the lowest values being measured for the bi-layered coatings containing ZnO particles, both in the first and in the second layers of the coating. Considering the antibacterial activity, the most effective were the AOAg-II and AOZnO-II coatings, which exhibited the highest reduction of microbial growth.

show abstract

“…Inorganic sol-gel oxides are the simplest way to achieve corrosion mitigation [ 13 ]. This group of materials is characterized by good adhesion to metal substrates, thus they are often applied as interlayers [ 14 ]. During the research on such types of materials, it was discovered that they have the ability to create many Van der Waals interactions, which can be transformed into stable covalent bonds [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, inorganic coatings show better wear resistance than pure organic ones, e.g., those containing polymer compounds. Typical inorganic sol-gel coatings for corrosion mitigation are obtained as simple oxides, e.g., zirconium, titania, and silica [ 14 , 16 ]. Apart from SiO 2 protective coatings [ 17 , 18 ], ZrO 2 -based coatings with self-healing properties deserve particular consideration [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Zirconia and Organic Additives on Mechanical and Electrochemical Properties of Silica Sol-Gel Coatings

et al. 2021

Self Cite

View full text Add to dashboard Cite

This paper presents the result of the investigation of organically modified silica (ORMOSIL)-zirconia coatings used to enhance their protective properties, namely corrosion and scratch resistance. Two different materials, i.e., SiO2/ZrO2 and SiO2/GPTMS/ZrO2, were synthesized, measured, and analyzed to find the difference in the used organosilane precursor (dimethyldiethoxysilane and (3-glycidoxypropyl)trimethoxysilane, respectively). SiO2/ZrO2 coatings showed higher hardness than SiO2/GPTMS/ZrO2. Moreover, the value of polarization resistance (Rp) for SiO2/GPTMS/ZrO2 coated 316L steel relative to the uncoated one was obtained. It was nearly 84 times higher. The coating delamination was observed with load 16N. Additionally, the corrosion mitigation for 316L coated by SiO2/GPTMS/ZrO2 was observed even after extended exposure to corrosion agents.

show abstract

Sol–gel surface functionalization regardless of form and type of substrate

Cited by 18 publications

References 118 publications

The Effect of Sol-Gel Coatings on the Phosphorus (P) Adsorption Capacity of Calcareous Materials for Use in Water Treatment

The Effect of Sol-Gel Coatings on the Phosphorus (P) Adsorption Capacity of Calcareous Materials for Use in Water Treatment

Novel Hydrophobic Nanostructured Antibacterial Coatings for Metallic Surface Protection

Influence of Zirconia and Organic Additives on Mechanical and Electrochemical Properties of Silica Sol-Gel Coatings

Contact Info

Product

Resources

About