TiO2-based devices for energy-related applications

Prakash, C. G. Jothi; Prasanth, R.

doi:10.1016/b978-0-12-819960-2.00016-x

Cited by 4 publications

(2 citation statements)

References 129 publications

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“…Since the discovery of photocatalytic water splitting using TiO 2 , in 1972, by Honda and Fujishima, , this semiconductor had gained great attention for photocatalytic uses. It is widely used for energy purposes and environmental applications. − Its large band gap (3.19 eV) gives it enough energy to perform catalytic reactions that require large energy inputs, such as water oxidation and radical formation. In particular, hydroxyl radicals and other radicals originating from them are of great interest due to their high antimicrobial nature, which also finds utilization in degrading organic materials.…”

Section: Introductionmentioning

confidence: 99%

Fibrous TiO₂ Alternatives for Semiconductor-Based Catalysts for Photocatalytic Water Remediation Involving Organic Contaminants

et al. 2023

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Water decontamination remains a challenge in several developed and developing countries. Affordable and efficient approaches are needed urgently. In this scenario, heterogeneous photocatalysts appear as one of the most promising alternatives. This justifies the extensive attention that semiconductors, such as TiO 2 , have gained over the last decades. Several studies have evaluated their efficiency for environmental applications; however, most of these tests rely on the use of powder materials that have minimal to no applicability for large-scale applications. In this work, we investigated three fibrous TiO 2 photocatalysts, TiO 2 nanofibers (TNF), TiO 2 on glass wool (TGW), and TiO 2 in glass fiber filters (TGF). All materials have macroscopic structures that can be easily separated from solutions or that can work as fixed beds under flow conditions. We evaluated and compared their ability to bleach a surrogate dye molecule, crocin, under batch and flow conditions. Using black light (UVA/visible), our catalysts were able to bleach a minimum of 80% of the dye in batch experiments. Under continuous flow experiments, all catalysts could decrease dye absorption under shorter irradiation times: TGF, TNF, and TGW could, respectively, bleach 15, 18, and 43% of the dye with irradiation times as short as 35 s. Catalyst comparison was based on the selection of physical and chemical criteria relevant for application on water remediation. Their relative performance was ranked and applied in a radar plot. The features evaluated here had two distinct groups, chemical performance, which related to the dye degradation, and mechanical properties, which described their applicability in different systems. This comparative analysis gives insights into the selection of the right flow-compatible photocatalyst for water remediation.

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Section: Introductionmentioning

confidence: 99%

Fibrous TiO₂ Alternatives for Semiconductor-Based Catalysts for Photocatalytic Water Remediation Involving Organic Contaminants

et al. 2023

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“…The selected maximum filler content allows maintaining the samples’ structural and mechanical stability and integrity. Mainly, TiO 2 particles are chosen due to their photocatalytic properties, , with well-known potential for environmental remediation , and energy applications. , AgNWs are selected based on their catalytic, optical, and antimicrobial properties. , Combining these fillers with a robust PVDF matrix allows us to build up a ternary composite with multifunctional properties.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Ternary Composites with Silver Nanowires and Titanium Dioxide Nanoparticles for Capacitive Sensing and Photocatalytic Self-Cleaning Applications

Tubío

Pereira

Campos-Arias

et al. 2022

ACS Appl. Electron. Mater.

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Multifunctional polymer composites are of increasing interest as they allow tuning of physical–chemical properties for specific applications. A ternary composite material is presented based on the incorporation of titanium dioxide (TiO2) nanoparticles and conductive silver nanowires (AgNWs) into a poly(vinylidene fluoride) (PVDF) polymer matrix. The films were prepared by solvent casting, varying the contents of the filler up to 10 wt %, and showed improved mechanical and dielectric responses and tailorable optical properties. In contrast, the morphology, polymer phase, and thermal stability are nearly independent of the filler type and content within the composite. A dielectric constant of up to 14 at 1 kHz was obtained for the 7.5%AgNWs/2.5%TiO2/PVDF sample. The (multi)functionality of the developed materials is demonstrated for photocatalytic self-cleaning and capacitive sensing applications, indicating the suitability of the approach for next-generation hybrid multifunctional materials.

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Pre & Post-Treatment of Functionalized Nanomaterials in Fabricating Supercapacitor Electrodes

Jha,

Prasanth

2023

Materials Horizons: From Nature to Nanomaterials

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TiO2-based devices for energy-related applications

Cited by 4 publications

References 129 publications

Fibrous TiO₂ Alternatives for Semiconductor-Based Catalysts for Photocatalytic Water Remediation Involving Organic Contaminants

Fibrous TiO₂ Alternatives for Semiconductor-Based Catalysts for Photocatalytic Water Remediation Involving Organic Contaminants

Multifunctional Ternary Composites with Silver Nanowires and Titanium Dioxide Nanoparticles for Capacitive Sensing and Photocatalytic Self-Cleaning Applications

Pre & Post-Treatment of Functionalized Nanomaterials in Fabricating Supercapacitor Electrodes

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TiO2-based devices for energy-related applications

Cited by 4 publications

References 129 publications

Fibrous TiO2 Alternatives for Semiconductor-Based Catalysts for Photocatalytic Water Remediation Involving Organic Contaminants

Fibrous TiO2 Alternatives for Semiconductor-Based Catalysts for Photocatalytic Water Remediation Involving Organic Contaminants

Multifunctional Ternary Composites with Silver Nanowires and Titanium Dioxide Nanoparticles for Capacitive Sensing and Photocatalytic Self-Cleaning Applications

Pre & Post-Treatment of Functionalized Nanomaterials in Fabricating Supercapacitor Electrodes

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Product

Resources

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Fibrous TiO₂ Alternatives for Semiconductor-Based Catalysts for Photocatalytic Water Remediation Involving Organic Contaminants

Fibrous TiO₂ Alternatives for Semiconductor-Based Catalysts for Photocatalytic Water Remediation Involving Organic Contaminants