Low Temperature Synthesis of TiO2-β-Cyclodextrin–Graphene Nanocomposite for Energy Storage and Photocatalytic Applications

Sharavath, Vittal; Sarkar, Suprabhat; Gandla, Dayakar; Ghosh, Sutapa

doi:10.1016/j.electacta.2016.05.177

Cited by 32 publications

(15 citation statements)

References 61 publications

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“…β-CD has been found to be valuable in enhancing the kinetics of charge transfer from the photoexcited semiconductor to cavity-absorbed electron acceptors [249]. A low temperature study on TiO 2 -β-CD-graphene nanocomposite synthesis for energy storage and photocatalytic applications was reported by Sharavath et al [250]. In a novel route that is a low temperature operation, the TiO 2 -CD@GNS composite was synthesized.…”

Section: Cds In Solar Energymentioning

confidence: 99%

Cyclodextrins: Structural, Chemical, and Physical Properties, and Applications

et al. 2021

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Due to their unique structural, physical and chemical properties, cyclodextrins and their derivatives have been of great interest to scientists and researchers in both academia and industry for over a century. Many of the industrial applications of cyclodextrins have arisen from their ability to encapsulate, either partially or fully, other molecules, especially organic compounds. Cyclodextrins are non-toxic oligopolymers of glucose that help to increase the solubility of organic compounds with poor aqueous solubility, can mask odors from foul-smelling compounds, and have been widely studied in the area of drug delivery. In this review, we explore the structural and chemical properties of cyclodextrins that give rise to this encapsulation (i.e., the formation of inclusion complexes) ability. This review is unique from others written on this subject because it provides powerful insights into factors that affect cyclodextrin encapsulation. It also examines these insights in great detail. Later, we provide an overview of some industrial applications of cyclodextrins, while emphasizing the role of encapsulation in these applications. We strongly believe that cyclodextrins will continue to garner interest from scientists for many years to come, and that novel applications of cyclodextrins have yet to be discovered.

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Section: Cds In Solar Energymentioning

confidence: 99%

Cyclodextrins: Structural, Chemical, and Physical Properties, and Applications

et al. 2021

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“…该超分子体系可稳定分散于水溶液中, 可为金属盐提供原位还原以形成超分子金属纳米复合材料. Sharavath 等 [55] 首次在 90 ℃低温下用一种简单的水相法合成了 TiO 2 -β-CD-石墨烯(TiO 2 -CD@GNS) 纳米复合材料(Scheme 7), 利用 β-CD 作为稳定剂将石墨烯固定于水相中, 防止其发生聚集, 从而促进了…”

Section: 环糊精参与的 Pd II 催化有机反应unclassified

Transition Metal Catalyzed Organic Reaction Involving Cyclodextrin

Chen¹,

Gui²,

Duan³

et al. 2019

Chin. J. Org. Chem.

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Cyclodextrin is a kind of cyclic oligosaccharide which is composed of the D-pyran glucose units connected with the α-1,4-glycosidic bond. Cyclodextrin has the rigidly tapered cavity of hydrophobic inner and hydrophilic outer. Cyclodextrin has been attracted more and more attention from scientists since it was discovered, owning to its special space cavity of hydrophilic inner and hydrophilic outer. As an important industrial catalyst, transition metal catalyst can combine with the cyclodextrin system to simultaneously exert the catalytic properties of the metal and the molecular recognition and phase transfer of cyclodextrin, which greatly improves its catalytic performance. In this paper, the transition metal catalyzed organic reactions involving cyclodextrin are reviewed, and these reactions are described in terms of the metal valence from 0 to 4. Finally, the development and foreground of these co-catalyst systems involving metal and cyclodextrin are prospected. It is expected that the catalytic system will have a wider application in the future, and a more efficient and selective catalytic system will be continuously developed.

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“…Thus, the efficiency of TiO 2 can be improved by tuning the band gap by combining it with carbon nanomaterials. [22] GQDs, the sp 2 -hybridized zero-dimensional honeycomb carbonaceous nanomaterial have strong and tunable photoluminescence properties with an excellent photostability as well as electron transporting properties. [24][25] Hence, integration of GQDs with wide band gap semiconductors (TiO 2 , ZnO etc.)…”

Section: Introductionmentioning

confidence: 99%

“…Methylene Blue (MB), Rhodamine B (RhB) and Methyl Orange (MO) are very popular industrial dyes, and are some of the crucial contaminants, polluting the water bodies. Thus, the efficiency of TiO 2 can be improved by tuning the band gap by combining it with carbon nanomaterials [22] …”

Section: Introductionmentioning

confidence: 99%

Graphene Quantum Dots Decorated TiO₂ Nanostructures: Sustainable Approach for Photocatalytic Remediation of an Industrial Pollutant

et al. 2021

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Industrial pollutants are one of the many contributing factors towards deterioration of nature, urging the scientific community around the globe to look for ways in which they can be eliminated. In this regard, we have developed and optimized an efficient photocatalytic system comprising of liquid exfoliated graphene quantum dots (GQDs) and TiO 2 , by carrying out a thorough study with different morphologies of TiO 2 ; namely, nanotubes, nanorods and nanoparticles. The nanocomposites were duly characterized using various techniques such as FT-IR, TGA, FESEM, UV-vis spectroscopy etc. Among the as-prepared range of nanocomposites, the photocatalyst containing 2 wt% of GQDs and TiO 2 nanotubes was found to exhibit a higher degradation efficiency of 96.7 % towards methylene blue (MB) under visible light irradiation of 120 min. Further, we have also repeated the photocatalytic study of this nanocomposite up to four cycles to understand the reusability of the photocatalyst. Band gap of GQDs, pristine TiO 2 and the nanocomposite determined from Tauc plot was found to be 2.26, 2.92 and 2.86 eV respectively. We also underline that the "metal-free" GQDs, synthesized via our approach, play the role of a photosensitizer by providing an edge of extending the visible light absorption in the case of nanocomposites via enhanced electron-hole (e-h) separation and lowering of band gap.

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Low Temperature Synthesis of TiO2-β-Cyclodextrin–Graphene Nanocomposite for Energy Storage and Photocatalytic Applications

Cited by 32 publications

References 61 publications

Cyclodextrins: Structural, Chemical, and Physical Properties, and Applications

Cyclodextrins: Structural, Chemical, and Physical Properties, and Applications

Transition Metal Catalyzed Organic Reaction Involving Cyclodextrin

Graphene Quantum Dots Decorated TiO₂ Nanostructures: Sustainable Approach for Photocatalytic Remediation of an Industrial Pollutant

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Low Temperature Synthesis of TiO2-β-Cyclodextrin–Graphene Nanocomposite for Energy Storage and Photocatalytic Applications

Cited by 32 publications

References 61 publications

Cyclodextrins: Structural, Chemical, and Physical Properties, and Applications

Cyclodextrins: Structural, Chemical, and Physical Properties, and Applications

Transition Metal Catalyzed Organic Reaction Involving Cyclodextrin

Graphene Quantum Dots Decorated TiO2 Nanostructures: Sustainable Approach for Photocatalytic Remediation of an Industrial Pollutant

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Product

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Graphene Quantum Dots Decorated TiO₂ Nanostructures: Sustainable Approach for Photocatalytic Remediation of an Industrial Pollutant