Analyses of surface coloration on TiO2 film irradiated with excimer laser

Qian, Haixia; Zhou, Wei

doi:10.1016/j.apsusc.2007.09.005

Cited by 22 publications

(16 citation statements)

References 8 publications

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“…Hence, in recent years, PLAL has become a successful nanomaterial fabrication tool for the formation of the novel nanostructures. 19,[21][22][23][24][25] However, compared to large investigations on fabrication of TiO 2 by laser ablation in vacuum, 7,[26][27][28][29][30][31] there were few studies on the preparation of TiO 2 nanoparticles by PLAL.…”

Section: 5mentioning

confidence: 99%

Simple Preparation of Anatase TiO₂Nanoparticles via Pulsed Laser Ablation in Liquid

Hong¹,

Lee²,

Jung³

et al. 2013

Bulletin of the Korean Chemical Society

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The physical and chemical properties of TiO 2 have been of great interest due to the potential application in photocatalytic, photovoltaic, lithium-ion battery and dye-sensitized solar cell systems.1-3 Especially, its characteristic properties in optical and electronic properties, nontoxicity, chemical inertness, and high melting temperatures have drawn extensive research on the ability of semiconductor photocatalyst to promote the photodegradation of various pollutants. 4,5Anatase, brookite, and rutile are the major crystalline structures of TiO 2 , of which rutile phase is most stable; whereas anatase and brookite phases are metastable and easily transformed to rutile phase when heated above about 600-8006,7 As demonstrated in other experimental studies, the anatase form of TiO 2 has shown much higher photoactivity than that of rutile. 3,5,8,9 In the meantime, a number of methods have been explored and developed for the synthesis of TiO 2 nanoparticles, such as hydrolysis of Ti(IV) ions, 10 hydrolysis of titanium alkoxides 11 or titanium tetrachloride 12 in gas phase, sol-gel, 13hydrothermal hydrolysis, 14 and precipitation, 15 of which many studies were devoted to the synthesis of rutile phase, while fewer investigations on the anatase phase. This naively supports that synthesis of pure anatase phase is more challenging than that of rutile. Furthermore, the major products from the above techniques are typically amorphous and require post-calcination for better crystallinity and morphology of the product, which inevitably results in the formation of larger sizes of TiO 2 nanoparticles. Therefore, it is demanding to explore a method that overcomes the problems mentioned above.In order to fabricate small-sized TiO 2 nanoparticles with good crystallinity at room temperature, we have applied a pulsed laser to ablate a Ti plate immersed in deionized water and methanol. Pulsed laser ablation in liquid (PLAL) 16 was introduced by Patil and co-workers in 1987 and has been demonstrated to be an effective, simple, and versatile method for synthesizing nanomaterials starting from an appropriate choice of solids and liquids.17-20 Because of relatively simple and clean preparation of nanoparticles using PLAL, coupled with its versatility, many different metal nanostructures providing desired functions have been fabricated. One of the main advantages of PLAL compared to other methods is that it can generate nanomaterials without the need of any catalysts or organic additives. Hence, in recent years, PLAL has become a successful nanomaterial fabrication tool for the formation of the novel nanostructures.19,21-25 However, compared to large investigations on fabrication of TiO 2 by laser ablation in vacuum, 7,26-31 there were few studies on the preparation of TiO 2 nanoparticles by PLAL.32-34 Furthermore in the previous PLAL studies, the synthesis of rutile and mixture of anatase and rutile phase was mostly employed. 34,35In the present note, we report a one-step synthesis of pure anatase TiO 2 nanoparticles by PLA of Ti pla...

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Section: 5mentioning

confidence: 99%

Simple Preparation of Anatase TiO₂Nanoparticles via Pulsed Laser Ablation in Liquid

Hong¹,

Lee²,

Jung³

et al. 2013

Bulletin of the Korean Chemical Society

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“…As a thermal source, laser provides a more flexible, precise and selective tool to obtain these layers with a high dimensional precision on metallic surfaces [9][10][11][12][13][14][15][16][17].…”

mentioning

confidence: 99%

Optical characterization of laser coloured titanium under different processing atmospheres

Khafaji

Demir

Vitali

et al. 2017

Surface and Coatings Technology

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“…Recent studies have showed that the application of Mg alloys can be explored to more fields due to advanced surface engineering technology (Zheng et al 2008;Bull 2005;Ma et al 2008;Gray and Luan 2002;Abbas et al 2005;. In this work, surface coloration was achieved on AZ31B…”

Section: (2) Surface Colorationmentioning

confidence: 86%

“…Moreover, both clusters and particles can trap light at the rough surface due to their morphology and topography based on the previous study Zheng et al 2008), and such effect will reduce the reflectance and cause the darkening effect, as shown in Figure 5.1.…”

mentioning

confidence: 77%

“…Besides these works on semiconductor materials, studies have also been carried out on non-semiconductor materials. Zheng et al (2008 and2009) studied color change of different material surfaces following laser irradiation, and they found that the color generation was the result of controlled surface oxidation during laser beam interaction with the metal surfaces. According to this correlation, demonstrated formation of different oxides layer on the irradiated Ti surface, and proposed that morphological change of irradiated area played an important role in determining the laser-induced coloration.…”

Section: (2) Surface Colorationmentioning

confidence: 99%

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Laser surface processing of ultralight magnesium alloys

Guan

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for making the effort to participate in my qualifying examination. Second, I would like to express my appreciation to Machining Technology Group from Singapore Institute of Manufacturing Technology for providing me privileges to use their facilities and for providing great help through my study. I would like to thank Dr. Zheng Hongyu for his brilliant guidance and caring financial support. He opened up a whole new world of laser science to me. I am also grateful to Dr. Li Zhongli for her countless contribution to this work. Her great knowledge on lasers and ingenious experimental techniques has helped me numerous difficulties and guided me to become a skilled researcher. Third, I would like to thank the other great members of our research group for their nice friendship on my research work and life during the past four years.

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Analyses of surface coloration on TiO2 film irradiated with excimer laser

Cited by 22 publications

References 8 publications

Simple Preparation of Anatase TiO₂Nanoparticles via Pulsed Laser Ablation in Liquid

Simple Preparation of Anatase TiO₂Nanoparticles via Pulsed Laser Ablation in Liquid

Optical characterization of laser coloured titanium under different processing atmospheres

Laser surface processing of ultralight magnesium alloys

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Analyses of surface coloration on TiO2 film irradiated with excimer laser

Cited by 22 publications

References 8 publications

Simple Preparation of Anatase TiO2Nanoparticles via Pulsed Laser Ablation in Liquid

Simple Preparation of Anatase TiO2Nanoparticles via Pulsed Laser Ablation in Liquid

Optical characterization of laser coloured titanium under different processing atmospheres

Laser surface processing of ultralight magnesium alloys

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Product

Resources

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Simple Preparation of Anatase TiO₂Nanoparticles via Pulsed Laser Ablation in Liquid

Simple Preparation of Anatase TiO₂Nanoparticles via Pulsed Laser Ablation in Liquid