Superhydrophobic/superoleophilic membranes based on covalent silanization of silica nanoparticles

Lombardo, Gabriel; Sosa, Mariana D.; Cánneva, Antonela; Saggion, Nicolás García; Rojas, Graciela; Kaplan, Andrea; Negri, R. Martı́n; D’Accorso, Norma B.

doi:10.1016/j.seppur.2021.120129

Cited by 6 publications

(5 citation statements)

References 46 publications

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“…The weight loss percentage of GSCG decreased slowly in the range of 505 to 720 °C, and the 13.3% weight loss was attributed to the further degradation and carbonization of the remaining organic substances . Among them, the decomposition of SiO 2 was included throughout the entire phase from 170 to 720 °C . This result demonstrated that GSCG has good thermal stability and can maintain its structural integrity at extremely harsh ambient temperatures (up to 170 °C).…”

Section: Resultsmentioning

confidence: 84%

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Sodium Alginate Aerogel as a Carrier of Organogelators for Effective Oil Spill Solidification and Recovery

Xue,

Shen,

Chen

et al. 2024

Langmuir

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Marine oil spills pose a serious threat to the marine ecological environment. Phase-selective organogelators (PSOGs) are ideal candidates for oil spill gelation when used in combination with a mechanical recovery method. However, the toxicity of an organic solvent carrier has become a key problem when it is applied in the remediation of marine oil pollution. In this study, through an inexpensive and nontoxic ionic cross-linking and freeze-drying method, we successfully developed composite oil gelling agents that used a biomass sodium alginate aerogel as the carrier of 12-hydroxystearic acid (12-HSA). Simultaneously, carboxylated cellulose nanofibers (CNF-C) with large specific surface area and graphene oxide (GO) with excellent mechanical properties as reinforcing fillers were combined with an alginate matrix. 12-HSA, as a green and inexpensive organic gelator, was uniformly loaded on the aerogels by vacuum impregnation. The sodium alginate aerogel was capable of absorbing and storing oil due to its three-dimensional network skeleton and high porosity. Rheological studies have demonstrated that the organic gelator 12-HSA can be released from the aerogel substrate and self-assemble to form an oleogel with the absorbed oil quickly. The synergistic effect between absorption and congelation endows the composite oil gelling agent with efficient oil spill recovery capability. Based on eco-friendly, biodegradable, and simple synthesis methods, this composite oil gelling agent shows great potential for application in marine oil spill recovery.

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Section: Resultsmentioning

confidence: 84%

“…52 Among them, the decomposition of SiO 2 was included throughout the entire phase from 170 to 720 °C. 53 This result demonstrated that GSCG has good thermal stability and can maintain its structural integrity at extremely harsh ambient temperatures (up to 170 °C).…”

Section: ■ Introductionmentioning

confidence: 75%

Sodium Alginate Aerogel as a Carrier of Organogelators for Effective Oil Spill Solidification and Recovery

Xue,

Shen,

Chen

et al. 2024

Langmuir

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“…The membrane was characterized by spectroscopic, thermal and microscopy methods, also its mechanical resistance was determined. [65] In Figure 8 is schematized the methodology applied to obtain the superhydrophobic/olephilic membranes.…”

Section: Materials For Oil and Gas Industrymentioning

confidence: 99%

“…Then, this membrane was treated with hexadecyltrimethoxysilane (HDTS) to gain the organosylil modified nanoparticles. The membrane was characterized by spectroscopic, thermal and microscopy methods, also its mechanical resistance was determined [65] . In Figure 8 is schematized the methodology applied to obtain the superhydrophobic/olephilic membranes.…”

Section: Materials For Oil and Gas Industrymentioning

confidence: 99%

From the Lab to the Field: Organic Materials for Industrial Applications and Environmental Remediation

Manzano,

D'Accorso

2023

ChemPlusChem

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Many new achievement developments for different industries have their origin in the basic science. Within the last years, this trend is gaining much attention since the interaction between both fields (scientific and industry) is increasing. This article presents some rational materials chemical modifications that were developed by the basic science and were, then, transferred to the productive sector. Conducting hydrophobic coatings for aerospace applications, hydrogels for the oil & gas industry as well as polymers for removal of heavy metal were some of the topics approached in the lab to solve industrial problems. Many times, nature is a great source of inspiration to produce new materials. In this sense, superhydrophobicity and superhydrophilicity (concepts closely related to our everyday life) were the bioinspiration for the development of membranes. These membranes were able to separate hydrocarbons and water, which found application in the treatment of subterranean water for oil & gas industry.

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“…Oh et al 13 used the colloidal silica nanoparticles with upper layer of chain-like gas-phase silica nanoparticles, a self-cleaning coating, to improve the protective performance. Lombardo et al 14 obtained the thin film through covalent silanization of silica nanoparticles on metal mesh. The thin coating presented a strong hydrophobicity and enhanced corrosion resistance on the metallic substrate.…”

Section: ■ Introductionmentioning

confidence: 99%

Eco-Friendly Sustainable and Responsive High-Performance Benzotriazole-Metal Organic Frameworks/Silica Composite Coating with Active/Passive Corrosion Protection on Copper

Gao,

Cao

et al. 2024

Langmuir

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Coatings with only passive protection cannot offer long-term anticorrosion on metals. Eco-friendly sustainable and responsive coating for active/passive corrosion protection is desirable to extend the service life of metals. Here, benzotriazole (BTA)-metal organic frameworks (Cu-MOFs, UiO-66) were embedded in silica (SiO 2 ) coating by one-step electrodeposition on copper. Combined with passive capability of MOFs and active protection of BTA inhibitor, the composite coating (BTA-MOF/ SiO 2 ) exhibited high and stable corrosion resistance, confirmed by microstructure characterizations and electrochemical tests. As a result, the as-prepared composite coating exhibited superhydrophobicity with a water contact angle of 154.2°. With loading of BTA-MOF in SiO 2 coating, the impedance modulus at 0.01 Hz increased by ∼10-fold and the corrosion current density decreased to 3.472 × 10 −9 A•cm −2 . Immersion and salt spray tests confirmed the long-term protection of the composite coating. The responsive release of BTA inhibitor endows the coating with a responsively anticorrosive behavior. The active-passive ability makes the coating a good candidate for protection on metals used in highly salty environments.

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Superhydrophobic/superoleophilic membranes based on covalent silanization of silica nanoparticles

Cited by 6 publications

References 46 publications

Sodium Alginate Aerogel as a Carrier of Organogelators for Effective Oil Spill Solidification and Recovery

Sodium Alginate Aerogel as a Carrier of Organogelators for Effective Oil Spill Solidification and Recovery

From the Lab to the Field: Organic Materials for Industrial Applications and Environmental Remediation

Eco-Friendly Sustainable and Responsive High-Performance Benzotriazole-Metal Organic Frameworks/Silica Composite Coating with Active/Passive Corrosion Protection on Copper

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