The Synchronization of Electron Enricher and Electron Extractor as Ternary Composite Photoanode for Enhancement of DSSC Performance

Sangkhun, Weradesh; Wanwong, Sompit; Wongyao, Nutthapon; Butburee, Teera; Kumnorkaew, Pisist; Wootthikanokkhan, Jatuphorn

doi:10.1155/2020/8712407

Cited by 4 publications

(4 citation statements)

References 46 publications

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“…This impressive result is possibly due to the mesostructure in 3DOM. Photocatalysts with high dye-loading capacity are also desirable for other applications such as dye-sensitized solar cells (DSSC), [ 49 , 50 , 51 , 52 ] highlighting the potential utilization of our developed catalysts in other applications. The photocatalytic efficiency of the 3D-HPT was also compared with the commercial anatase TiO 2 and no catalysts, and the results are presented in Figure 5 a.…”

Section: Resultsmentioning

confidence: 99%

Three-Dimensional Hierarchical Porous TiO2 for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye

Poolwong

Kiatboonyarit²,

Achiwawanich³

et al. 2021

Nanomaterials

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Three-dimensional hierarchical mesoporous structures of titanium dioxide (3D-HPT) were synthesized by self-assembly emulsion polymerization. Polymethyl methacrylate (PMMA) and pluronic 123 (P123) were used as the soft templates and co-templates for assisting the formation of hierarchical 3D porous structures. The TiO2 crystal structure, morphology, and Remazol red dye degradation were investigated. The 3D-HPT and normal three-dimensional titanium dioxide (3D-T) presented the good connection of the nanoparticle-linked honeycomb within the form of anatase. The 3D-HPT structure showed greatly enhanced adsorption of Remazol dye, and facilitated the efficient photocatalytic breakdown of the dye. Surprisingly, 3D-HPT can adsorb approximately 40% of 24 ppm Remazol dye in the dark, which is superior to 3D-T and the commercial anatase at the same condition (approx. 5%). Moreover, 3D-HPT can completely decolorize Remazol dye within just 20 min, which is more than three folds faster than the commercial anatase, making it one of the most active photocatalysts that have been reported for degradation of Remazol dye. The superior photocatalytic performance is attributed to the higher specific surface area, amplified light-harvesting efficiency, and enhanced adsorption capacity into the hierarchical 3D inverse opal structure compared to the commercial anatase TiO2.

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Section: Resultsmentioning

confidence: 99%

Three-Dimensional Hierarchical Porous TiO2 for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye

Poolwong

Kiatboonyarit²,

Achiwawanich³

et al. 2021

Nanomaterials

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“…These peaks represent the photoemission of free electrons that recombined at the shallow trap states due to oxygen vacancies. [32][33] Moreover, it was found that PL intensity increased with an increase in particle size of Au NPs. According to Kodiyath's group, this was attributed to the recombination of hot electrons generated by the LSPR process.…”

Section: Characterizations Of Au Nps Deposited On Tio 2 {001}-{010}mentioning

confidence: 98%

Enhanced Water Splitting Reaction Performance using TiO₂ Deposited with Graphene Quantum Dots Grafted onto Gold Nanoparticles

et al. 2021

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This study explores the feasibility of enhancing the water splitting performance of hybrid photo-electrocatalyst made from graphene quantum dots (GQDs) grafted with gold nanoparticles (Au NPs) deposited on crystal facet engineered TiO 2 (Ti). The effect of the Au NPs size on photoelectrochemical (PEC) water splitting performance was systematically investigated. It was found that the TiO 2 with co-exposed {001}-{010} facet deposited with large particle size of Au NPs showed an enhancement in PEC performance, due to the localized surface plasmon resonance (LSPR). By contrast, the system containing Au NPs with smaller size retarded the transport rate of free electrons because of their high electron affinity. Interestingly, the hybrid catalyst (GQDs-Au d40 /Ti) delivered a considerable high current density (0.535 mA/cm 2 at 1.23 V vs RHE), as compared to the pristine TiO 2 (0.267 mA/cm 2 ). This was due to the capability of GQDs in acting as an electron extractor, withdrawing hot electrons produced by Au NPs and inhibiting the charge recombination. Overall, this work demonstrated that the PEC water splitting performance of TiO 2 based photoelectrocatalyst can be synergistically enhanced by combining the plasmonic effect of Au NPs and electron extractor properties of GQDs.

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“…In this context, TiO 2 is used for photocatalysis as they are candidates for a wide range of applications such as hydrogen production, gas sensors, and supercapacitors [17], a property of great interest in dye-sensitized solar cells, where the dye is used together with a photocatalyst, which can be a semiconductor oxide such as TiO 2 or zinc oxide (ZnO) [17,20].…”

Section: Photocatalysismentioning

confidence: 99%

“…All anthocyanins are derived from specific. The core of the chromophore, phenylbenzopyridine or flavin, consists of two aromatic rings (see Figure 9) [20,58].…”

Section: Anthocyanidinsmentioning

confidence: 99%

Perspectives of Organic Dyes Cosensitization and Its Utilization in TiO₂ Nanoclusters for Photocatalysis Applications

Barraza-Jiménez,

Manuel Lerma Mancinas,

Iván Flores-Hidalgo

et al. 2024

Nanotechnology and Nanomaterials

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Cosensitization has emerged as a method to improve performance of dye sensitized solar cells (DSSCs) and photocatalysis. In this work, it is proposed to use organic dyes as cosensitizers due to their friendliness with the environment and to the benefits of having two or more different dyes with complementary optical absorption characteristics. Several organic dyes are analyzed as cosensitizers to identify which dye combinations may be good choices to approach a panchromatic absorption spectrum emulating the solar emission spectrum. In addition to the analysis on the prospective sensitizers, it is presented results of titanium dioxide (TiO2) nanoclusters cosensitized with two anthocyanidins using density functional theory (DFT) and time-dependent DFT (TD-DFT). The nanocluster size proved to be definitive in the interactions with two molecule dyes. The selected (TiO2)4–5 nanoclusters cosensitized with two anthocyanidins produce data for a prospective analysis to suggest which dyes are good options for DSSCs and photocatalysis based on dye co-sensitization applications. At the end, one can look at this work as a perspective of which organic dyes may work well as cosensitizers and a contrast to original data from our experimentation with a couple of TiO2 nanoclusters cosensitized with two different anthocyanidins.

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The Synchronization of Electron Enricher and Electron Extractor as Ternary Composite Photoanode for Enhancement of DSSC Performance

Cited by 4 publications

References 46 publications

Three-Dimensional Hierarchical Porous TiO2 for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye

Three-Dimensional Hierarchical Porous TiO2 for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye

Enhanced Water Splitting Reaction Performance using TiO₂ Deposited with Graphene Quantum Dots Grafted onto Gold Nanoparticles

Perspectives of Organic Dyes Cosensitization and Its Utilization in TiO₂ Nanoclusters for Photocatalysis Applications

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The Synchronization of Electron Enricher and Electron Extractor as Ternary Composite Photoanode for Enhancement of DSSC Performance

Cited by 4 publications

References 46 publications

Three-Dimensional Hierarchical Porous TiO2 for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye

Three-Dimensional Hierarchical Porous TiO2 for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye

Enhanced Water Splitting Reaction Performance using TiO2 Deposited with Graphene Quantum Dots Grafted onto Gold Nanoparticles

Perspectives of Organic Dyes Cosensitization and Its Utilization in TiO2 Nanoclusters for Photocatalysis Applications

Contact Info

Product

Resources

About

Enhanced Water Splitting Reaction Performance using TiO₂ Deposited with Graphene Quantum Dots Grafted onto Gold Nanoparticles

Perspectives of Organic Dyes Cosensitization and Its Utilization in TiO₂ Nanoclusters for Photocatalysis Applications