Hydrophobic rutile phase TiO2 nanostructure and its properties for self-cleaning application

Shamsudin, Shazarel; Ahmad, Mohd Rozi; Aziz, A. N.; Fakhriah, R.; Mohamad, Fatimah Syahidah; Ahmad, N.; Nayan, Nafarizal; Soon, Chin Fhong; Ameruddin, Amira Saryati; Faridah, A. B.; Shimomura, Masaru; Murakami, Katsuhisa

doi:10.1063/1.5002048

Cited by 12 publications

(8 citation statements)

References 1 publication

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“…Titania-based thermoelectric materials are widely regarded as effective materials for thermoelectric device fabrication [44,45]. Different rutile phases of titania with diverse microstructures, such as titania nanorods (NRd-T) or other bilayers that consist of rods and flower structures (NRd/NFs-T), were synthesized by applying supercritical conditions at nanoscale [46].…”

Section: Titania-based Thermoelectric Devices With Different Microstructuresmentioning

confidence: 99%

Thermoelectric Energy Harvesters: A Review of Recent Developments in Materials and Devices for Different Potential Applications

et al. 2020

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The thermoelectric effect encompasses three different effects, i.e. Seebeck effect, Peltier effect, and Thomson effect, which are considered as thermally activated materials that alter directions in smart materials. It is currently considered one of the most challenging green energy harvesting mechanisms among researchers. The ability to utilize waste thermal energy that is generated by different applications promotes the use of thermoelectric harvesters across a wide range of applications. This review illustrates the different attempts to fabricate efficient, robust and sustainable thermoelectric harvesters, considering the material selection, characterization, device fabrication and potential applications. Thermoelectric harvesters with a wide range of output power generated reaching the milliwatt range have been considered in this work, with a special focus on the main advantages and disadvantages in these devices. Additionally, this review presents various studies reported in the literature on the design and fabrication of thermoelectric harvesters and highlights their potential applications. In order to increase the efficiency of equipment and processes, the generation of thermoelectricity via thermoelectric materials is achieved through the harvesting of residual energy. The review discusses the main challenges in the fabrication process associated with thermoelectric harvester implementation, as well as the considerable advantages of the proposed devices. The use of thermoelectric harvesters in a wide range of applications where waste thermal energy is used and the impact of the thermoelectric harvesters is also highlighted in this review.

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Section: Titania-based Thermoelectric Devices With Different Microstructuresmentioning

confidence: 99%

Thermoelectric Energy Harvesters: A Review of Recent Developments in Materials and Devices for Different Potential Applications

et al. 2020

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“…Initial measures to all samples were taken directly to the TiO 2 -sol NPs after released from dark container, at time UV-irradiation equal zero, to get the highest contact angle to the drop which referred to ''hydrophobic'' (16).…”

Section: Self-cleaning Propertiesmentioning

confidence: 99%

Primary Colors Red, Yellow, and Blue Use as Self-Cleaning Paints with Layer of Titanium Dioxide

Hussin¹

2019

Baghdad Sci.J

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Transparent nano- coating was prepared by Sol-Gel method from titanium dioxide TiO2 which has the ability to self-cleaning coating used for hospitals, laboratories, and places requiring permanent sterilization. Three primary colors are selected (red, blue, and yellow) as preliminary study to the effect of these colors on the nano-coating. Three traditional oil paints color were used as base, then coated by a layer of TiO2-Sol and deposited on the paints. The optical properties of TiO2-Sol were measured; the maximum absorption wavelength at (λmax=387 nm), the refractive index (n=1.4423) and the energy band gap (Eg=3.2 eV). The structure properties found by X-ray diffraction of TiO2-Sol illustrated that TiO2-Sol is polycrystalline nanoparticle have anatase phase also the morphological properties measured by Scanning Electron Microscopy (SEM) obetained the average grain size of TiO2-Sol was (50.427 nm). Self-cleaning properties measured by tensiometer dives. The best color gave the highest response to self-cleaning is the yellow color where the contact angle before exposure to UV ( = 101.47º ,at t = 0 min) and after exposure over time ( = 1.75º ,at t = 50 min), thus the water sheet of the surface and remove all contaminants.

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“…This study utilized the unique intrinsic bioactivity and physical properties of Gr and TiO 2 nanoparticles to fabricate an ideal superhydrophobic surface, 24 in addition to their high‐corrosion resistance and low toxicity 25–29 . Graphene has received massive attention due to its unique properties, such as electronic conductivity, optical transmittance and large surface area, that are suitable to wide range of applications 30 .…”

Section: Introductionmentioning

confidence: 99%

Blood compatible and noncytotoxic superhydrophobic graphene/titanium dioxide coating with antibacterial and antibiofilm properties

Liew

Lim

et al. 2023

J of Applied Polymer Sci

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The potential of superhydrophobic surfaces has gained vast attention in medical settings due to their self‐cleaning effect (including bacterial colonization reduction), minimized cell‐to‐surface interaction, and anti‐biofouling effect. These valuable features allow the vanquishment of some limitations accompanying the blood‐contacting medical devices that are widely used in clinical practice. The extracorporeal circulation used to perform hemodialysis, for instance, as well as the blood collection sets, these essential blood‐contacting medical devices are frequently associated with bacterial infection and hemolysis. Within this study, superhydrophobic surface was substantiated to enhance the biocompatibility. Herein, the graphene (Gr) and titanium dioxide (TiO2) nanoparticles were dip‐coated on poly(lactic acid) (PLA) film to produce a superhydrophobic surface. The uniform distribution of the Gr/TiO2 nanoparticles of the coating enhanced the surface roughness and therefore promoted superhydrophobic properties. Co‐occurrence of the Cassie‐Baxter regime and Wenzel regime was suggested to induce the low surface wettability. The superhydrophobic Gr/TiO2 demonstrated significant inhibition of biofilm formation and antibacterial activity against Staphylococcus aureus, Klebsiella pneumoniae and Pseudomonas aeruginosa. Besides, the in vitro blood compatibility assay showed a hemolysis rate lower than 2%, which was categorized as nonhemolytic. The exposure of human heart cells and kidney cells to the Gr/TiO2‐coated PLA film did not significantly affect the cell viability. The findings herein showed promising results for the superhydrophobic Gr/TiO2‐coated PLA film to act as a potential biomaterial for single‐use blood‐contacting medical devices. This study also provided insight for future medical applications that require superhydrophobic coatings.

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Hydrophobic rutile phase TiO2 nanostructure and its properties for self-cleaning application

Cited by 12 publications

References 1 publication

Thermoelectric Energy Harvesters: A Review of Recent Developments in Materials and Devices for Different Potential Applications

Thermoelectric Energy Harvesters: A Review of Recent Developments in Materials and Devices for Different Potential Applications

Primary Colors Red, Yellow, and Blue Use as Self-Cleaning Paints with Layer of Titanium Dioxide

Blood compatible and noncytotoxic superhydrophobic graphene/titanium dioxide coating with antibacterial and antibiofilm properties

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