Ternary Pt@TiO2/rGO Nanocomposite to Boost Photocatalytic Activity for Environmental and Energy Use

Saber, Nesrine Ben; Mezni, Amine; Alrooqi, Arwa; Altalhi, Tariq

doi:10.1007/s10904-021-02001-5

Cited by 12 publications

(11 citation statements)

References 21 publications

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“…Generally, the composites are formed using decoration of TiO 2 with GO powder. In such cases under UV illumination, mainly a reduction of GO is observed if sufficient hole capture agents (e.g., CH 3 OH) are present 24,[33][34][35][36] . Please note that in our case the dominance of the hole oxidation pathway is provided by the absence of another hole scavenger than graphite.…”

Section: Resultsmentioning

confidence: 99%

“…One prominent application of GO is photocatalysis, where it can serve as visible light sensitizer or as part of a semiconductor heterojunction – often in combination with TiO 2. [34–36] TiO 2 by itself is one of the most used photocatalysts as it possesses chemical stability, a strong oxidizing ability in the decomposition of organic pollutants, and a low cost. UV illumination leads to the photogeneration of excited charge carriers (electrons and holes) [37–39] .…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic Synthesis of Oxidized Graphite Enabled by Grey TiO₂and Direct Formation of a Visible‐Light‐Active Titania/Graphene Oxide Nanocomposite

et al. 2022

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Herein we report a one-step, low cost, photocatalytic method for the synthesis of graphene oxide (GO) from commercial graphite using grey TiO 2 as a photocatalyst. GO formation is achieved by UV-illumination of a slurry of well-dispersed grey TiO 2 and commercial graphite. Light-induced valence-band holes from grey TiO 2 then lead to an oxidation and exfoliation of graphite, resulting in the formation of visible-light-active GO. An optimal level of graphite oxidation can be established by controlling the UV illumination time. Moreover, the resulting GO-decorated TiO 2 is directly active as a visible-light-active photocatalyst that can, for example, be used for pollution degradation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photocatalytic Synthesis of Oxidized Graphite Enabled by Grey TiO₂and Direct Formation of a Visible‐Light‐Active Titania/Graphene Oxide Nanocomposite

et al. 2022

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“…The crystallographic planes (101) and (002) were attributed to the interplanar spacing lattice fringes of anatase TiO 2 and were calculated to be ∼0.35 and 0.47 nm, respectively. 39,40 3.2. Absorption Studies.…”

Section: Methodsmentioning

confidence: 99%

Shedding Light on Benzo[d]pyrrolo[2,1-b]thiazole-3-carbonitrile Sensitizer-Based TiO₂ Photocatalysts for Enhanced Hydrogen Generation

Chanda,

Saini,

Basak

et al. 2023

J. Phys. Chem. C

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In this work, we study a series of benzo [d]pyrrolo-[2,1-b]thiazole-3-carbonitrile (BP) derivatives, which act as sensitizers for photocatalytic hydrogen generation applications. The metal-free BP organic sensitizers 1-and BP-3, respectively, act as light-harvesting units when loaded onto n-type semiconductors. In this study, we paired these sensitizers with the n-type semiconductor platinized TiO 2 to create the materials TiO 2 −BP-1, TiO 2 −BP-2, and TiO 2 −BP-3. TiO 2 −BP-1 showed superior hydrogen generation efficiency compared to TiO 2 −BP-2, TiO 2 −BP-3, and pristine platinized TiO 2 . The electron transfer dynamics that take place between the dyes and TiO 2 were studied using photoemission spectroscopy. The light-harvesting capacity, theoretical highest occupied molecular orbital and lowest unoccupied molecular orbital levels, and redox potential behavior of the sensitizers were evaluated by completing systematic photophysical, electrochemical, and computational studies. For TiO 2 −BP-1, a significant hydrogen generation rate of 3.32 mmol g −1 h −1 , with an apparent quantum yield (AQY) of 8.5% and a turnover number (TON) of 3344, was obtained at 420 nm, thus indicating the excellent light-harvesting capability of the BP-1 sensitizer. The increased photocatalytic activity of the devices when under simulated sunlight shows that BP derivatives have the potential to be useful photosensitizers in sustainable hydrogen generation applications.

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“…due to its speci c properties [9,10]. Furthermore, titania is used as photocatalysts for various environmental remediation [8, [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Synthesis Parameters of Nanoporous Titania Particles to Improve Structural Properties and Photocatalytic Activity

Hassankhani-Majd

Anbia

2021

Preprint

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Nanoporous materials have been widely used in many fields. However, their synthesis with uniform particle shapes, pore sizes, pore volumes, and surface areas remains a considerable challenge. Thus, choosing a suitable controllable method for synthesizing nanoporous materials is crucial to obtain appropriate properties. Herein, nanoporous titania particles (NPTPs) were prepared via the hydrothermal. This study investigated how the synthesis parameters such as the type of chelating agent, the hydrolysis method, and the drying technique affected the properties of NPTPs. The synthesis NPTPs were characterized by XRD, FESEM, and BET. The results demonstrated that when acetylacetone (ACAC) (as the chelating agent), the spray-hydrolysis (SH) method, and the freeze-drying (FD) technique were used, NPTPs achieved a more uniform particle shape, a smaller particle size, a larger pore size, a larger pore volume, and a higher surface area. Ultimately, the photocatalytic degradation (PCD) of methylene blue (MB) was examined using improved NPTPs.

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Ternary Pt@TiO2/rGO Nanocomposite to Boost Photocatalytic Activity for Environmental and Energy Use

Cited by 12 publications

References 21 publications

Photocatalytic Synthesis of Oxidized Graphite Enabled by Grey TiO₂and Direct Formation of a Visible‐Light‐Active Titania/Graphene Oxide Nanocomposite

Photocatalytic Synthesis of Oxidized Graphite Enabled by Grey TiO₂and Direct Formation of a Visible‐Light‐Active Titania/Graphene Oxide Nanocomposite

Shedding Light on Benzo[d]pyrrolo[2,1-b]thiazole-3-carbonitrile Sensitizer-Based TiO₂ Photocatalysts for Enhanced Hydrogen Generation

Comparative Study of Synthesis Parameters of Nanoporous Titania Particles to Improve Structural Properties and Photocatalytic Activity

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Ternary Pt@TiO2/rGO Nanocomposite to Boost Photocatalytic Activity for Environmental and Energy Use

Cited by 12 publications

References 21 publications

Photocatalytic Synthesis of Oxidized Graphite Enabled by Grey TiO2and Direct Formation of a Visible‐Light‐Active Titania/Graphene Oxide Nanocomposite

Photocatalytic Synthesis of Oxidized Graphite Enabled by Grey TiO2and Direct Formation of a Visible‐Light‐Active Titania/Graphene Oxide Nanocomposite

Shedding Light on Benzo[d]pyrrolo[2,1-b]thiazole-3-carbonitrile Sensitizer-Based TiO2 Photocatalysts for Enhanced Hydrogen Generation

Comparative Study of Synthesis Parameters of Nanoporous Titania Particles to Improve Structural Properties and Photocatalytic Activity

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Photocatalytic Synthesis of Oxidized Graphite Enabled by Grey TiO₂and Direct Formation of a Visible‐Light‐Active Titania/Graphene Oxide Nanocomposite

Photocatalytic Synthesis of Oxidized Graphite Enabled by Grey TiO₂and Direct Formation of a Visible‐Light‐Active Titania/Graphene Oxide Nanocomposite

Shedding Light on Benzo[d]pyrrolo[2,1-b]thiazole-3-carbonitrile Sensitizer-Based TiO₂ Photocatalysts for Enhanced Hydrogen Generation