Nano-architectural design of TiO2 for high performance photocatalytic degradation of organic pollutant: A review

Rostami, Mohammad; Badiei, Alireza; Ganjali, Mohammad Reza; Rahimi‐Nasrabadi, Mehdi; Naddafi, Mastoureh; Karimi‐Maleh, Hassan

doi:10.1016/j.envres.2022.113347

Cited by 57 publications

(10 citation statements)

References 220 publications

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“…AuNS-loaded TiO 2 is widely studied for photochemical reactions, photovoltaic solar cells, photocatalytic degradation, etc., based on electron transfer from photoexcited Au nanostructures to TiO 2 . − To investigate the effect of the Ti layer on electron transfer, we then performed transient absorption (TA) measurements on the ATTA structures. The signals were plotted as normalΔ A = prefix− log 10 ( R R 0 ) in units of optical density (OD), where R and R 0 are the reflections from the sample with and without pump pulses, respectively.…”

Section: Resultsmentioning

confidence: 99%

Improving Charge Transfer under Strong Coupling Conditions via Interfacial Modulation

Cao,

Shi,

Oshikiri

et al. 2024

ACS Photonics

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Plasmon-induced carrier transfer at metal/semiconductor Schottky junctions is a novel approach for photo energy conversion. Here, we propose a strategy for improving electron transfer at the Au/TiO2 heterojunction by modifying the Au/TiO2 structures under modal strong coupling conditions to demonstrate the efficacy of our proposal. Via transient absorption measurements, we found that the apparent quantum efficiency (AQE) of electron injection into TiO2 increased by ∼1.8-fold as the thickness of the Ti layer increased from 0.5 to 5.0 nm under the modal strong coupling conditions. This AQE enhancement was attributed to the energy transfer from AuNDs to the Ti layer through the near-field, resulting in a production of high-energy electrons in the Ti layer to inject into the conduction band of TiO2, thereby improving the electron transfer efficiency. Our observations offer valuable insight into the future design of plasmonic devices aimed at efficiently utilizing plasmon-induced hot carriers.

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Section: Resultsmentioning

confidence: 99%

Improving Charge Transfer under Strong Coupling Conditions via Interfacial Modulation

Cao,

Shi,

Oshikiri

et al. 2024

ACS Photonics

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“…Titanium dioxide (TiO 2 ) and iron (Ⅲ) oxide (Fe 2 O 3 ) are utilized as coating agents, but they are well-known photocatalysts. They are excited by UV irradiation and transfer their excited energy to other compounds [ 30 , 31 , 32 ]. When SPL tablets are crushed or suspended, light emission efficiency to TiO 2 or Fe 2 O 3 might be improved, resulting in the enhancement of their photocatalytic activities.…”

Section: Resultsmentioning

confidence: 99%

Structure Determination of Felodipine Photoproducts in UV-Irradiated Medicines Using ESI-LC/MS/MS

Kawabata

Kohashi

Akimoto³

et al. 2023

Pharmaceutics

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Dihydropyridine drugs are well known as photodegradable pharmaceuticals. Herein, we evaluate the photostability of felodipine (FL) medicine (Splendil® (SPL) tablets) and its altered forms (powders and suspensions). FL is a type of dihydropyridine drug, but its photochemical behavior is unknown. FL contents after ultraviolet light (UV) irradiation for 24 h were monitored using high-performance liquid chromatography (HPLC). Values of the residual amounts of FL in UV-irradiated SPL powders and suspensions were 32.76 ± 4.88% and 0.79 ± 0.74%, respectively, with the generation of two photoproducts (FL photoproduct 1 and 2). To identify the chemical structures of these photoproducts, electrospray ionization liquid chromatography mass spectrometry (ESI-LC/MS/MS) analysis was performed. Based on their mass-to-charge ratio values and fragment patterns, it was proposed that FL photoproduct 1 was a pyridine derivative and FL photoproduct 2 was an FL dimer. Interestingly, generation rates of FL photoproduct 1 and 2 were dependent on the presence of the aqueous media. The photodimerization of FL was induced in UV-irradiated SPL suspensions. This is the first report evaluating the photostability of SPL tablets and its altered forms and estimating FL photoproducts induced by UV irradiation in the formulation of SPL.

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“…(2) The recombination rate of photogenerated electrons and holes (e À /h + ) is high, resulting in a significant reduction in the number of carriers involved in the redox reaction on the active site on the catalyst surface, thus, lowering the photocatalytic efficiency of the material. 5 Therefore, scientists are continuing to explore ways to modify TiO 2 , primarily by material sensitization and impurity doping, to allow the use of cheap, clean, and endless sunlight as an energy source, and to increase photocatalytic efficiency.…”

Section: Introductionmentioning

confidence: 99%

Recent advances of semiconductor photocatalysis for water pollutant treatment: mechanisms, materials and applications

Wu,

Li,

Wang

et al. 2023

Phys. Chem. Chem. Phys.

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Nano-architectural design of TiO2 for high performance photocatalytic degradation of organic pollutant: A review

Cited by 57 publications

References 220 publications

Improving Charge Transfer under Strong Coupling Conditions via Interfacial Modulation

Improving Charge Transfer under Strong Coupling Conditions via Interfacial Modulation

Structure Determination of Felodipine Photoproducts in UV-Irradiated Medicines Using ESI-LC/MS/MS

Recent advances of semiconductor photocatalysis for water pollutant treatment: mechanisms, materials and applications

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