Sunlight driven photocatalytic performance of a Pt nanoparticle decorated sulfonated graphene–TiO<sub>2</sub> nanocomposite

Alamelu, K.; Ali, B. M. Jaffar

doi:10.1039/d0nj00394h

Cited by 18 publications

(2 citation statements)

References 45 publications

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“…To evaluate the optical properties of the both phased TiO 2 monolayers, the absorbance was measured using UV-vis spectroscopy. , by a plot of the (ahv) 2 versus hv curves [30] .…”

Section: Resultsmentioning

confidence: 99%

Arrays of TiO2 nanosphere monolayer on GaN-based LED for the improvement of light extraction

Kim

Jung

et al. 2022

Preprint

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We report on the fabrication of TiO2 nanospheres (NSs) monolayer arrays for enhancement of light extraction quantum efficiency of GaN-based light-emitting diodes (LEDs). The fabricated TiO2 NSs monolayer arrays composed of different phases of anatase (An-) and amorphous (Am-) TiO2, the arrays were transferred onto the topmost layer of LED chips via facile icing transfer method. The LED chips covered with Am-TiO2 NSs monolayer arrays shows 3.0- times enhanced light output power intensity compared with reference LED chips at a fixed injection current of 100 mA. The enhanced light extraction of LED chips by Am-TiO2 NSs monolayer can be attributed to an high transmittance (91.1%) in visible and increased light extraction probability of photons generated in LEDs, resulting from the enhanced light coupling efficiency by reduced total internal reflection (TIR). Finite-difference time-domain (FDTD) simulation results also agreed well with the experimentally observed results. Based on the experimental and theoretical results, our suggested Am- and An-TiO2 NSs arrays can be considered as a very facile and effective method to improve the device performance of various visible LEDs chips.

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“…To evaluate the optical properties of the both phased TiO 2 monolayers, the absorbance was measured using UV-vis spectroscopy. , by a plot of the (ahv) 2 versus hv curves [30] .…”

Section: Resultsmentioning

confidence: 99%

Arrays of TiO2 nanosphere monolayer on GaN-based LED for the improvement of light extraction

Kim

Jung

et al. 2022

Preprint

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“…As a consequence, TiO 2 must play a vital role in catalytic process. It is possible that electrons provided by BH 4 À can transport from E F * level of Pt NPs to TiO 2 CB, [32] greatly similar to that of catalytic mechanism under visible light surrounding. To sum up, the recombination rate of the photo-generated electronhole pair becomes weaker as testified by PL result in Figure 5 (the upper inset of Figure 8a) and electrons experience longer ways (the lower inset of Figure 8a and Figure 8b).…”

Section: Plausible Catalytic Mechanismmentioning

confidence: 95%

Versatile Dendritic Silica & Titania‐supported Platinum Catalyst for Highly Efficient Water Splitting and p‐Nitrophenol Reduction

Tao

Wang

et al. 2022

ChemistrySelect

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p-Nitrophenol acts as a notorious environmentally hazardous material. The reduction of nitro group (-NO 2 ) to amino group (-NH 2 ) with the assistance of catalyst has been regarded as one of the most reasonable methods to dispose p-nitrophenol. Herein, for the first time, we construct a novel dendritic silica & titania-supported platinum (Pt) nanocatalyst which can reduce p-nitrophenol with the bigger apparent first-order rate constant than almost all previously reported. Besides, the catalyst can split water under simulated sunlight with a H 2 yield of 493.6 μmol ⋅ À 1 in 5 hours, nearly 240-folds of dendritic silicasupported Pt. The improvements in catalytic performances can be attributed to special structural advantages of dendritic support, chemical composition of anatase titania (TiO 2 ), and localized surface plasmon resonance (LSPR) effect from Pt nanoparticles (NPs). This catalyst exhibits desirable robustness, stability, and reusability, because of the hybrid architecture and the high affinity of the functionalized interface to Pt NPs.

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Enhanced photocatalytic performance of Cu2O/TiO2/rGA composites to degrade gas-phase unsymmetrical dimethylhydrazine

et al. 2022

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Sunlight driven photocatalytic performance of a Pt nanoparticle decorated sulfonated graphene–TiO₂ nanocomposite

Abstract: An efficient Pt nanoparticle decorated sulfonated graphene–TiO2 (SGTPt) ternary nanocomposite was prepared through a facile hydrothermal route followed by the polyol process.

Cited by 18 publications

References 45 publications

Arrays of TiO2 nanosphere monolayer on GaN-based LED for the improvement of light extraction

Arrays of TiO2 nanosphere monolayer on GaN-based LED for the improvement of light extraction

Versatile Dendritic Silica & Titania‐supported Platinum Catalyst for Highly Efficient Water Splitting and p‐Nitrophenol Reduction

Enhanced photocatalytic performance of Cu2O/TiO2/rGA composites to degrade gas-phase unsymmetrical dimethylhydrazine

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Sunlight driven photocatalytic performance of a Pt nanoparticle decorated sulfonated graphene–TiO2 nanocomposite

Abstract: An efficient Pt nanoparticle decorated sulfonated graphene–TiO2 (SGTPt) ternary nanocomposite was prepared through a facile hydrothermal route followed by the polyol process.

Cited by 18 publications

References 45 publications

Arrays of TiO2 nanosphere monolayer on GaN-based LED for the improvement of light extraction

Arrays of TiO2 nanosphere monolayer on GaN-based LED for the improvement of light extraction

Versatile Dendritic Silica & Titania‐supported Platinum Catalyst for Highly Efficient Water Splitting and p‐Nitrophenol Reduction

Enhanced photocatalytic performance of Cu2O/TiO2/rGA composites to degrade gas-phase unsymmetrical dimethylhydrazine

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Sunlight driven photocatalytic performance of a Pt nanoparticle decorated sulfonated graphene–TiO₂ nanocomposite