Development of New Catalytic Pigments: Dual Functional SiO2/TiO2-x Amorphous Photonic Crystals for Non-Iridescent Structural Color and Enhanced Photocatalytic Activity

Abstract Biomimetic synthesis of amorphous photonic crystals (APCs) is a significant approach to obtain non-iridescent structural colors. However, the structural colors of artificially prepared APCs are dim or even white due to the influence of incoherent scattering. In this paper, we present an innovative method was proposed to combine APCs with black TiO2-x to construct non-iridescent structural color pigments with high visibility and photocatalytic activity. Due to absorption of incoherent scattered light by black TiO2-x, the color saturation of structural colors has been significantly increased. In addition, the utilization rate of photogenic carriers was effectively enhanced by slow light effect generated from pseudo-band gap of SiO2 APCs with TiO2-x absorbed full spectrum. The tone and color saturation of catalytic pigments are controlled by the diameter of SiO2 nanospheres and the ration of TiO2-x nanoparticles, which provides a controllable application study in color related fields such as artwork, environmental coatings and textiles.

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Dual functional SiO2@TiO2 photonic crystals for dazzling structural colors and enhanced photocatalytic activity

Journal of Materials Chemistry C ◽

10.1039/c9tc03426a ◽

2019 ◽

Vol 7 (38) ◽

pp. 11972-11983 ◽

Cited By ~ 3

Author(s):

Fen Wang ◽

Li Feng ◽

Yi Qin ◽

Ting Zhao ◽

Hongjie Luo ◽

...

Keyword(s):

Photocatalytic Activity ◽

Photonic Crystals ◽

Structural Color ◽

Structural Colors ◽

Dual Functional

Structural color pigments with photocatalytic activity prepared by SiO2@TiO2 photonic crystals.

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Graphene Oxide/Reduced Graphene Oxide Enhanced Noniridescent Structural Colors Based on Silica Photonic Spray Paints with Improved Mechanical Robustness

Nanomaterials ◽

10.3390/nano11040949 ◽

2021 ◽

Vol 11 (4) ◽

pp. 949

Author(s):

Jiali Yu ◽

Cheng-Hao Lee ◽

Chi-Wai Kan

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Butyl Acrylate ◽

Light Spectrum ◽

Time Saving ◽

Abrasive Resistance ◽

Practical Applications ◽

Structural Colors ◽

Color Saturation ◽

Reduced Graphene

In contrast to traditional pigment colors, structural colors have developed a great potential in practical applications, thanks to their unique nonfading and color tunable properties; especially amorphous photonic structures with noniridescent structural colors have attracted considerable attention and their applications have expanded to more fields. Herein, graphene oxide (GO) and reduced graphene oxide (RGO) enhanced noniridescent structural colors with excellent mechanical robustness were established by a time-saving approach named spray coating, which allows for rapid fabrication of angular independent structural colors by spraying different photonic spray paints (PSPs) to ensure color multiplicity that was adjusted by the silica nanoparticles (SiO2 NPs) sizes onto the substrates. The incorporation of poly(methyl methacrylate-butyl acrylate) (PMB) improved the adhesion existing among SiO2 inter-nanoparticles and between SiO2 NPs and the substrates, taking advantages of the low glass transition temperature (Tg) of butyl acrylate derivative polymer and made PMB embedded PSPs coated patterns being imparted with good mechanical robustness and abrasive resistance. The peculiar light adsorption of GO and RGO across visible light spectrum facilitate higher color saturation. The improvement in color saturation of GO and RGO doped PSPs is expected to boost the promising applications in structurally colored paintings, inks and other color-related optical fields.

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Dynamic modulation of slow light rainbow trapping and releasing in a tapered waveguide based on low-symmetric photonic crystals

Results in Physics ◽

10.1016/j.rinp.2021.104592 ◽

2021 ◽

pp. 104592

Author(s):

Changsheng He ◽

Hong Wu ◽

Yanhui Feng ◽

Wei Su ◽

Feng Li

Keyword(s):

Photonic Crystals ◽

Slow Light ◽

Dynamic Modulation ◽

Tapered Waveguide

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Full-spectrum responsive photocatalytic activity via non-noble metal Bi decorated mulberry-like BiVO4

Journal of Material Science and Technology ◽

10.1016/j.jmst.2020.11.079 ◽

2021 ◽

Vol 83 ◽

pp. 102-112

Author(s):

Yaxin Bi ◽

Yanling Yang ◽

Xiao-Lei Shi ◽

Lei Feng ◽

Xiaojiang Hou ◽

...

Keyword(s):

Photocatalytic Activity ◽

Noble Metal ◽

Full Spectrum

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Effect of loss on slow-light enhanced absorption in liquid-infiltrated photonic crystals

2008 Conference on Lasers and Electro-Optics ◽

10.1109/cleo.2008.4552081 ◽

2008 ◽

Author(s):

Jesper Pedersen ◽

Sanshui Xiao ◽

Niels Asger Mortensen

Keyword(s):

Photonic Crystals ◽

Slow Light ◽

Enhanced Absorption

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Luminescent photonic crystals with multi-functionality and tunability

Chemical Science ◽

10.1039/c6sc01703g ◽

2016 ◽

Vol 7 (9) ◽

pp. 5692-5698 ◽

Cited By ~ 18

Author(s):

Hong Wang ◽

Xinggui Gu ◽

Rongrong Hu ◽

Jacky W. Y. Lam ◽

Deqing Zhang ◽

...

Keyword(s):

Photonic Crystals ◽

Aggregation Induced Emission ◽

Structural Colors ◽

Response To Water ◽

General Method

We develop a general method to incorporate aggregation-induced emission luminogens into photonic crystals (PCs) and the resulting luminescent PCs display diverse structural colors in response to water stimulation.

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