In-situ growth of ceria nanoparticles on graphene oxide nanoplatelets to be used as a multifunctional (UV shield/radical scavenger/anticorrosive) hybrid compound for exterior coatings

Amrollahi, S.; Ramezanzadeh, Bahram; Yari, H.; Ramezanzadeh, Mohammad; Mahdavian, M.

doi:10.1016/j.porgcoat.2019.105241

Cited by 24 publications

(17 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…XRD is employed to obtain the detailed structural information of GO and GO-Ti composites. As shown in Figure 5, the characteristic diffraction peak of GO is at 10.98 • , which corresponds to the (002) plane [32]. The diffraction peaks of 35.13 • , 40.25 • , and 42.82 • are the characteristic peaks of Ti, corresponding to the (100), (002), and (101) planes, respectively [33].…”

Section: Structure and Morphology Of Go-ti Compositesmentioning

confidence: 96%

Graphene Oxide Decorated with Titanium Nanoparticles to Reinforce the Anti-Corrosion Performance of Epoxy Coating

Yuan

Nie

et al. 2020

Coatings

View full text Add to dashboard Cite

Graphene oxide–titanium (GO-Ti) composite materials were fabricated using GO as a precursor and then anchoring nano titanium (Nano-Ti) particles on GO sheets with the help of a silane coupling agent. Then, the coating samples were prepared by dispersing GO, Nano-Ti particles, and GO-Ti in an epoxy resin at a low weight fraction of 1 wt %. The GO-Ti composites were investigated by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The dispersibility and anti-corrosion mechanism of the coatings were studied by sedimentation experiments, electrochemical impedance spectroscopy (EIS), SEM, and salt spray tests. The mechanical properties of the coatings were analyzed by friction and wear tests. The results showed that the Nano-Ti particles were successfully loaded on the GO surface by chemical bonds, which made GO-Ti composites exhibit better dispersibility in the epoxy than GO. Compared with Nano-Ti particles and GO, the GO-Ti composite exhibited significant advantages in improving the corrosion resistance of epoxy coatings at the same contents, which was attributed to the excellent dispersibility, inherent corrosion resistance, and sheet structure. Among the different proportions of composite materials, the GO-Ti (2:1) material exhibited the best dispersibility and corrosion resistance. In addition, the composite material also greatly improved the wear resistance of the coating.

show abstract

Section: Structure and Morphology Of Go-ti Compositesmentioning

confidence: 96%

Graphene Oxide Decorated with Titanium Nanoparticles to Reinforce the Anti-Corrosion Performance of Epoxy Coating

Yuan

Nie

et al. 2020

Coatings

View full text Add to dashboard Cite

show abstract

“…The interaction of CeONPs with GNSs resulted in the blue shift of an absorption peak at 229 nm and a broad shoulder ≈306 nm to 205 and 301 nm, respectively, suggesting that the -* plasmon peak (229 nm) belonging to aromatic C-C bonds and the n-* peak (306 nm) assigning to carbonyl groups were affected greatly due to the successful formation of CeONPs on GNSs surface. [33] Another new peak at 235 nm was found, resulting from the transition from O 2-(2p) to Ce 4+ (4f) orbitals in CeONPs. [33]…”

Section: Morphologies and Structures Of Gnss And Ceonps@gnssmentioning

confidence: 95%

“…The preparation of CeONPs@GNSs was according to a previous research with modifications. [33] Briefly, 0.1 g Ce(NO 3 ) 3 •6H 2 O was put into a beaker before 20 mL graphene dispersion was added. 1 mL 30% hydrogen peroxide was added slowly during stirring.…”

Section: Preparation Of Ceonps@gnssmentioning

confidence: 99%

“…[30] On the other hand, CeONPs and cerium ions can provide a synergistic anti-corrosion effect to act as cathodic sites for oxygen reduction reaction. [33,44] Here, for the purpose of providing anti-corrosion property in both physical and chemical manners, CeONPs were grown on GNSs to create multifunction fillers (CeONPs@GNSs) for the prepared self-healing coatings. The morphologies of GNSs and CeONPs@GNSs were investigated by TEM (Figure 5a-c).…”

Section: Morphologies and Structures Of Gnss And Ceonps@gnssmentioning

confidence: 99%

See 1 more Smart Citation

Facile Repair of Anti‐Corrosion Polymeric Composite Coatings Based on Light Triggered Self‐Healing

Yang

Cao

et al. 2021

Macro Materials & Eng

View full text Add to dashboard Cite

Photothermally induced self-healing coatings are widely reported, while their application scenarios are rarely taken with concern. In addition, there is a need to achieve the balance between good properties and self-healing behaviors for closing the gap between academic research and engineering applications. Here, self-healing composite coatings are designed based on silane-modified epoxy chains with reversible crosslinking points and multifunctional fillers of cerium oxide nanoparticles grown on graphene nanosheets, and their applications are demonstrated for restricted regions. Diglycidyl ether-terminated poly(dimethylsiloxane) is co-polymerized with diglycidylether of bisphenol A with the weight ratio of 1/99-10/90 to achieve surface-tension driven crack closure, while dangling furan groups contribute to reversible crosslinking points via Diels-Alder reaction. Cerium oxide nanoparticles and graphene nanosheets enhance anti-corrosion properties, and graphene nanosheets also act as photothermal fillers. The results show that pencil hardness, polarized resistance, and coating resistance are highly improved via the introduction of multifunctional fillers at 1 and 2 phr. Good thermally and photothermally induced self-healing is demonstrated. This work provides a new application thought for light triggered self-healing coatings that can be used for restricted regions including inner walls of pipelines and reactors.

show abstract

“…In the field of UV‐shielding polymer composites, some significant researches also developed the UV‐shielding nanohybrids consisting of anti‐UV Nps and nanocarriers. For example, Amrollahi et al 55 prepared a CeO 2 /GO nanohybrid based on CeO 2 Nps and graphene oxide (GO) nanosheets via electrostatic self‐assembly. The result showed CeO 2 was uniformly dispersed on the surface of GO nanosheets.…”

Section: Recent Advances In Highly Efficient Uv‐shielding Compositesmentioning

confidence: 99%

Surface engineering of nanoparticles for highly efficient UV‐shielding composites

Liu

Chen

et al. 2020

Polymers for Advanced Techs

View full text Add to dashboard Cite

Overexposure to ultraviolet (UV) with high energy can not only hurt human skin but also accelerate the degradation of organic matter. Hence, the preparation of polymer‐based UV‐shielding nanocomposites has attracted substantial attention due to the low cost, easy processing and wide applications. Notably, the highly efficient UV‐shielding polymer nanocomposites are still hindered by the agglomeration of inorganic anti‐UV nanoparticles (Nps) in polymer matrix and the narrow absorption range of UV‐shielding agents. To overcome the aforementioned bottlenecks, surface engineering of anti‐UV Nps including organic modification and inorganic hybridization has been extensively employed to enhance the UV‐shielding efficiency of composites. Herein, to deliver the readers a comprehensive understanding of the surface engineering of anti‐UV Nps, we systematically summarize the recent advances in surface organic modification and inorganic hybridization related to anti‐UV Nps. The UV‐shielding mechanism and the factors affecting UV‐shielding efficiency of polymer nanocomposites are also discussed. Finally, perspectives on remaining challenges and future development of highly efficient UV‐shielding composites are outlined.

show abstract

In-situ growth of ceria nanoparticles on graphene oxide nanoplatelets to be used as a multifunctional (UV shield/radical scavenger/anticorrosive) hybrid compound for exterior coatings

Cited by 24 publications

References 60 publications

Graphene Oxide Decorated with Titanium Nanoparticles to Reinforce the Anti-Corrosion Performance of Epoxy Coating

Graphene Oxide Decorated with Titanium Nanoparticles to Reinforce the Anti-Corrosion Performance of Epoxy Coating

Facile Repair of Anti‐Corrosion Polymeric Composite Coatings Based on Light Triggered Self‐Healing

Surface engineering of nanoparticles for highly efficient UV‐shielding composites

Contact Info

Product

Resources

About