Dataset Information

Wide Response Range Photoelectrochemical UV Detector Based on Anodized TiO₂-Nanotubes@Ti@quartz Structure.

ABSTRACT: Conventional sandwich structure photoelectrochemical UV detectors cannot detect UV light below 300 nm due to UV filtering problems. In this work, we propose to place the electron collector inside the active material, thus avoiding the effect of electrodes on light absorption. We obtained a TiO₂-nanotubes@Ti@quartz photoanode structure by precise treatment of a commercial Ti mesh by anodic oxidation. The structure can absorb any light in the near-UV band and has superior stability to other metal electrodes. The final encapsulated photoelectrochemical UV detectors exhibit good switching characteristics with a response time below 100 ms. The mechanism of the oxidation conditions on the photovoltaic performance of the device was investigated by the electrochemical impedance method, and we obtained the optimal synthesis conditions. Response tests under continuous spectroscopy confirm that the response range of the device is extended from 300-400 nm to 240-400 nm. This idea of a built-in collector is an effective way to extend the response range of a photoelectrochemical detector.

SUBMITTER: Wang Y

PROVIDER: S-EPMC10934836 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature

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Wide Response Range Photoelectrochemical UV Detector Based on Anodized TiO<sub>2</sub>-Nanotubes@Ti@quartz Structure.

Wang Youqing Y Zhang Miaomiao M Wu Wenxuan W Wang Ze Z Liu Minghui M Yang Tiantian T Renqianzhuoma

Nanomaterials (Basel, Switzerland) 20240228 5

Conventional sandwich structure photoelectrochemical UV detectors cannot detect UV light below 300 nm due to UV filtering problems. In this work, we propose to place the electron collector inside the active material, thus avoiding the effect of electrodes on light absorption. We obtained a TiO<sub>2</sub>-nanotubes@Ti@quartz photoanode structure by precise treatment of a commercial Ti mesh by anodic oxidation. The structure can absorb any light in the near-UV band and has superior stability to o ...[more]

PMID: 38470770

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Project description:Ti is characteristically bioinert and is supplemented with modifications in surface topography and chemistry to find use in biomedical applications. The aim of this study is to understand the effects of surface charge on TiO2 nanotubes (TNT) on Ti implants towards early stage osseointegration. We hypothesize that charge storage on TNT will improve bioactivity and enhance early-stage osseointegration in vivo. Commercially pure Ti surface was altered by growing TNT via anodic oxidation followed by the introduction of surface charge through electrothermal polarization to form bioelectret. Our results indicate a stored charge of 37.15 ± 14 mC/cm2 for TNT surfaces. The polarized TNT (TNT-Ps) samples did not show any charge leakage up to 18 months, and improved wettability with a measured contact angle less than 1°. No cellular toxicity through osteoblast proliferation and differentiation in vitro were shown by the TNT-Ps. Enhanced new bone formation at 5 weeks post-implantation for the TNT-Ps in contrast to TNTs was observed in vivo. Histomorphometric analyses show ∼40% increase in mineralized bone formation around the TNT-P implants than the TNTs at 5 weeks, which is indicative of accelerated bone remodeling cycle. These results show that stored surface charge on TiO2 nanotubes helped to accelerate bone healing due to early-stage osseointegration in vivo. STATEMENT OF SIGNIFICANCE: To improve surface bioactivity of metallic biomaterials, various approaches have been proposed and implemented. Among them, stored surface charge has been explored to enhance biological responses for hydroxyapatite ceramics where charged surfaces show favorable bone tissue ingrowth. However, surface charge effects have not yet been explored as a way to mitigate bio-inertness of titanium. This study intends to understand novel integration of bioactive titania-nanotubes and charge storage as surface modification for titanium implants. Our results show excellent biological response due to surface charge on titania-nanotubes offering possibilities of faster healing particularly for patients with compromised bone health.

Dataset Information

Wide Response Range Photoelectrochemical UV Detector Based on Anodized TiO₂-Nanotubes@Ti@quartz Structure.

Publications

Wide Response Range Photoelectrochemical UV Detector Based on Anodized TiO<sub>2</sub>-Nanotubes@Ti@quartz Structure.

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Dataset Information

Wide Response Range Photoelectrochemical UV Detector Based on Anodized TiO2-Nanotubes@Ti@quartz Structure.

Publications

Wide Response Range Photoelectrochemical UV Detector Based on Anodized TiO<sub>2</sub>-Nanotubes@Ti@quartz Structure.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets

Wide Response Range Photoelectrochemical UV Detector Based on Anodized TiO₂-Nanotubes@Ti@quartz Structure.