Na-doped ZnO UV filters with reduced photocatalytic activity for sunscreen applications

Mueen, Rafid Abdlateef; Lerch, Michael L. F; Cheng, Zhenxiang; Konstantinov, Konstantin

doi:10.1007/s10853-019-04122-2

Cited by 22 publications

(15 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ZnO nanostructures have UV blocking capabilities with a tunable peak position depending on the thickness and annealing temperature; therefore, they are often used in UV filters or sunscreens. − Films of ZnO particles can be reshaped into nanorods by annealing at 180 °C, which increases their ability to absorb up to 50% of UV light while maintaining more than 80% transmission in the visible spectrum . By incorporating MXenes and Ni-chain into the coating with ZnO nanowires on cotton fabric, enhanced microwaves absorption can be achieved (compared to nonmodified ZnO) .…”

Section: Superhydrophobic Zno Nanowire Applicationsmentioning

confidence: 99%

Superhydrophobic ZnO Nanowires: Wettability Mechanisms and Functional Applications

Mardosaitė

Jurkevičiūtė

Račkauskas

2021

Crystal Growth & Design

View full text Add to dashboard Cite

Superhydrophobic surfaces are important parts of many applications in cleaning and protective coatings. Such surfaces can be realized by controlling the surface chemistry and nanoscale structure. Elongated ZnO nanostructures, called nanowires, are often used in superhydrophobic applications due to their intrinsic characteristic advantages and simple synthesis control. This review presents a critical overview of the latest research activities focused on the ZnO nanowire superhydrophobic surfaces. A wettability mechanism background is introduced with the overlay of the crystal structure fundamentals adapted for ZnO nanowires to gain insights into the multifunction application of superhydrophobic ZnO nanowires. Moreover, the latest achievements in application of ZnO superhydrophobic nanowires or reversible wettability for self-cleaning, separation, antifogging, antibacterial, and other applications are outlined. Finally, a brief outlook on the issues and emerging perspectives of ZnO nanowire wettability research is summarized.

show abstract

Section: Superhydrophobic Zno Nanowire Applicationsmentioning

confidence: 99%

Superhydrophobic ZnO Nanowires: Wettability Mechanisms and Functional Applications

Mardosaitė

Jurkevičiūtė

Račkauskas

2021

Crystal Growth & Design

View full text Add to dashboard Cite

show abstract

“…These materials are promising and represent a possible valuable alternative to the well-known ZnO and TiO 2 . Up to now, they have not been recognized in Annex VI to the EC regulation; however, they are often used and mentioned in the INCI and label as coloring agents or UV boosters [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Criticisms in the Development of High-Protection and Broad-Spectrum “Natural/Organic” Certifiable Sunscreen

et al. 2022

View full text Add to dashboard Cite

Attention to environmental issues has become increasingly important in recent years and also massively affects the cosmetics sector. In this context, sunscreens are questioned due to the proven or believed ecotoxicity of organic ultraviolet (UV) filters. This has pushed developers increasingly towards the use of inorganic filters, which can prove difficult to spread with low compliance. We faced the problem by proposing a rational approach based on the evaluation of the morphology of the inorganic material, as the real dimension does not often correspond to the characteristics declared by the producers because the material itself tends to aggregate. A combination of a specially selected inorganic filter is required to formulate Cosmetic Products with a Natural and Sustainable Connotation (CPCNS) standards.

show abstract

“…ZnO is in the form of hexagonal wurtzite (space group P 63 m c, JCPDS No. 96-230-0114) [15,[41][42][43] and ZrO 2 is in the tetragonal polymorph (JCPDS No. 70-1769) [44,45].…”

Section: Characterization Of Nanoparticles (Nps) and Functionalized Npsmentioning

confidence: 99%

Improving the Protective Properties of Shellac-Based Varnishes by Functionalized Nanoparticles

et al. 2021

View full text Add to dashboard Cite

Shellac is a natural varnish still known as one of the most elegant finishes for furniture and musical instruments, and currently used for restoration and refinishing of wooden antiques. However, it displays some limitations such as (i) sensitivity to alcoholic solvents (ii) softness of the coating, and (iii) considerable weathering due to photo- and bio-degradation. Hence, the main aim of this study was to improve the properties of shellac-based finish by introducing functionalized nanoparticles. Two inorganic nano-sized materials were considered: ZnO that was expected to reduce photo- and bio-degradation problems, and ZrO2 that was expected to improve the hardness of the varnish. Nanoparticles were synthesized and treated with a bifunctional silane coupling agent. Both plain and functionalized nanoparticles were extensively characterized using different experimental techniques. Functionalized nanoparticles were grafted on shellac through a reaction involving the epoxy-rings introduced on their surface. The resulting modified varnishes were applied on maple wood specimens according to traditional procedures. Different instrumental techniques and testing methods were used to characterize both nano-sized materials and the corresponding nanocomposites, as well as to evaluate the performance of the new coatings. The investigated composite materials display the same aesthetic appearance as plain shellac, while some other properties were improved. In particular, both nanocomposites are distinctly less soluble in alcohols than plain shellac and display antifungal properties. Moreover, coating containing functionalized ZnO nanoparticles displays photo-protection behavior, while shellac modified with ZrO2 nanoparticles exhibits a higher hardness when compared to the traditional varnish.

show abstract

Na-doped ZnO UV filters with reduced photocatalytic activity for sunscreen applications

Cited by 22 publications

References 38 publications

Superhydrophobic ZnO Nanowires: Wettability Mechanisms and Functional Applications

Superhydrophobic ZnO Nanowires: Wettability Mechanisms and Functional Applications

Criticisms in the Development of High-Protection and Broad-Spectrum “Natural/Organic” Certifiable Sunscreen

Improving the Protective Properties of Shellac-Based Varnishes by Functionalized Nanoparticles

Contact Info

Product

Resources

About