Engineering the surface structure of brookite-TiO2 nanocrystals with Au nanoparticles by cold-plasma technique and its photocatalytic and self-cleaning property

Tran, Thi Thuong Huyen; Tran, Thi Kim Chi; Le, Thi Quynh Xuan; Nguyen, Nhat Linh; Nguyen, Thi Minh Thuy; Pham, Thi Thu Hien; Nguyen, Truong Son; Do, Hoang Tung; Do, Huy Hoang

doi:10.1007/s11051-023-05854-8

Cited by 1 publication

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“…Numerous studies have explored the modification of TiO 2 with Au using various methods. Tran [8] utilized pulsed laser ablation to reduce Au + to Au and carried out a series of processes to deposit Au nanoparticles onto a TiO 2 substrate. Furthermore, the preparation method, which was both time consuming and complex, significantly reduced the catalytic effects during the degradation reaction.…”

Section: Introductionmentioning

confidence: 99%

Phenomenal Insight into Electrochemically Induced Photocatalytic Degradation of Nitrobenzene on Variant Au-Modified TiO2 Nanotubes

Wang,

Li,

Wang

et al. 2023

Catalysts

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TiO2 nanotubes are a prominent type of TiO2-based nanostructure compared to nanorod arrays. A promising way to improve photocatalytic performance is modifying TiO2 nanotubes with metals, either on the surface or inside the tubes. There is a substantial demand for enhancing the conductivity and charge separation of TiO2 nanotubes, with a major focus on gold (Au) modification. Gold (Au) coatings have significantly improved the photocatalytic activity of TiO2 nanotubes, particularly in pollutant oxidation. However, the mechanism underlying the action of Au-modified TiO2 nanotubes in photocatalytic nitrobenzene oxidation under electrochemical induction remains unclear. Therefore, we conducted related experiments to explore the optimal Au concentration under various conditions. Under electric field induction, the maximum removal rate achieved was 54.9%. Lastly, we analyzed the relevant photocatalytic mechanism to elucidate the responses of electrons and holes to a simulated contaminant under a photo-electrochemical field.

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Section: Introductionmentioning

confidence: 99%