Synthesis of ZnO sunscreen composite using lamellar self-assembly 6-PGME as template

Dong, Nianguo; Wang, Dazhi; Yin, Yu; Cai, Wei; Qu, Fengzuo; Lin, Jingjing; Lu, Deli; Han, Sheng

doi:10.1007/s11164-018-3616-5

Cited by 8 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The porous microscopic structure of the PTB cream provided sufficient space to accommodate and entrap sunscreen ingredients, which is thus favorable to prepare a high-performance PTB-modified sunscreen (PTB sunscreen) (Figure e). For this aim, well-established sunscreen ingredients were incorporated into the PTB, including coix seed and baicalin, , as plant extracts with anti-UV radiation properties, zinc oxide (ZnO) , nanoparticles with UV-shielding effects, moisturizers, emulsifiers, binders, and other active additives (Figures S1 and S2 and Table S2). Energy-dispersive X-ray spectroscopy (EDX) mapping clearly reflected the dense distribution of Zn in the cream (Figure f).…”

Section: Resultsmentioning

confidence: 99%

Suppression of Sunscreen Leakage in Water by Amyloid-like Protein Aggregates

Chang

Fan

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

A sunscreen offers indispensable skin protection against UV damage and related skin diseases. However, due to the poor interfacial stability of sunscreen coatings on the skin, the synthetic ingredients in sunscreen creams easily fall off and enter aquatic environments, causing large ecological hazards and skin protection failure. Herein, we tackle this issue by introducing amyloid-like protein aggregates into a sunscreen to noticeably enhance the interfacial robustness of sunscreen coatings on the skin. The synthesis of such an agent to suppress sunscreen leakage can be achieved by manipulating the phase transition of bovine serum albumin (BSA) in a mild aqueous solution at room temperature. The resulting phase-transitioned BSA (PTB) aggregates effectively entrap the sunscreen ingredients to generate a uniform cream coating on the skin with robust amyloid-mediated interfacial adhesion stability. With continuous flushing in aquatic environments, such as salt water and seawater, this PTB-modified sunscreen (PTB sunscreen) coated on the skin maintains a retention ratio as high as >92%, which is 2–10 times higher than those of commercially available sunscreen products. The high retention ratio of the PTB sunscreen in aquatic environments demonstrates the great potential of amyloid-like protein aggregates in the development of leakage-free sunscreens with low ecosystem hazards and long-lasting UV protection in aquatic environments.

show abstract

Section: Resultsmentioning

confidence: 99%

Suppression of Sunscreen Leakage in Water by Amyloid-like Protein Aggregates

Chang

Fan

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“… 24 Hence, ZnO in suspension must be immobilized on a suitable carrier before being used. Many materials, such as glass, 25 montmorillonite, 26 mesoporous silica, 27 polyvinyl alcohol, 28 electrodeposited tubes, 29 and template esters, 30 are commonly used as carriers or stabilizers, particularly by combining ZnO, with graphene being preferred. As a versatile carbon material, graphene has a two-dimensional conjugated chemical structure that enables it to possess appealing properties, like biocompatibility, high electrical conductivity, optical transparency, mechanical stability, and high thermal/chemical stability.…”

Section: Introductionmentioning

confidence: 99%

2D–3D graphene-coated diatomite as a support toward growing ZnO for advanced photocatalytic degradation of methylene blue

et al. 2021

View full text Add to dashboard Cite

show abstract

“…[9][10][11][12][13][14][15][16][17][18] It is generally believed that nanoparticle dispersity is critical to the functionality of nanocomposites, including the UV-blocking capability. 19,20 Therefore, aggregation of nanoparticles may significantly reduce UV-blocking efficiency and functionality. For example, TiO 2 nanoparticles, which trade at multi-billion-dollar market volumes, are most commonly applied in coating formulations as an opacifier due to the high reflective index.…”

Section: Introductionmentioning

confidence: 99%

“…The optical properties of these particles within coating films are highly dependent on nanoparticle size, distribution, and refractive index . In addition, these nanoparticles have received a great amount of attention within the scientific community and industry for their electrical, optical, catalytic, antibacterial, and thermal properties. − It is generally believed that nanoparticle dispersity is critical to the functionality of nanocomposites, including the UV-blocking capability. , Therefore, the aggregation of nanoparticles may significantly reduce UV-blocking efficiency and functionality. For example, TiO 2 nanoparticles, which trade at multi-billion-dollar market volumes, are most commonly applied in coating formulations as an opacifier due to the high reflective index.…”

Section: Introductionmentioning

confidence: 99%

Thin Biobased Transparent UV-Blocking Coating Enabled by Nanoparticle Self-Assembly

Olson

Lin

et al. 2019

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

A waterborne, UV-blocking, and visually transparent nanocomposite coating was formulated with ZnO nanoparticles and 2-hydroxyethyl cellulose (HEC). The coating is highly effective (< 5% UV and ~ 65% visible transmittance) and the film thickness (0.2-2.5 μm) is ~100 times thinner than the conventional coatings of similar UV-blocking performance. The superior properties are due to the fractal structures of ZnO nanoparticles assembled within the HEC matrix, revealed by scanning electron microscopy (SEM) and smallangle x-ray scattering (SAXS). Changing the binder to 2-hydroxyethyl starch (HES) diminishes the UVblocking performance, as ZnO nanoparticles form dense globular aggregates, with an aggregation number measured by SAXS three orders of magnitude larger than the HEC coating. Since HEC and HES share the same same chemical compositionrepeating glucose unit in the polymer backbone, it suggests that the conformational characteristics of the binder polymer have a strong influence on the nanoparticle aggregation, which plays a key role in determining the optical performance. Similar structures were achieved with TiO2 nanoparticles. This study not only offers a cost-effective and readily scalable method to fabricate transparent UV-blocking coating, but also demonstrates that the unique fractal aggregation structures in a nanocomposite material can provide high performance and functionality without fully dispersing the nanoparticles.

show abstract

Synthesis of ZnO sunscreen composite using lamellar self-assembly 6-PGME as template

Cited by 8 publications

References 25 publications

Suppression of Sunscreen Leakage in Water by Amyloid-like Protein Aggregates

Suppression of Sunscreen Leakage in Water by Amyloid-like Protein Aggregates

2D–3D graphene-coated diatomite as a support toward growing ZnO for advanced photocatalytic degradation of methylene blue

Thin Biobased Transparent UV-Blocking Coating Enabled by Nanoparticle Self-Assembly

Contact Info

Product

Resources

About