The photocatalysed reduction of aqueous sodium carbonate to carbon using platinised titania

Rophael, M.W.; Malati, Mounir A.

doi:10.1039/c39870001418

Cited by 25 publications

(8 citation statements)

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“…Low yields of the process result from the reverse oxidation reactions. The presence of some metal(0) deposited at the titania surface (vide supra) may enhance yields and the selectivity of the reduction products. − …”

Section: 26 Carbon Dioxide Photofixationmentioning

confidence: 99%

Bioinorganic Photochemistry: Frontiers and Mechanisms

et al. 2005

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Section: 26 Carbon Dioxide Photofixationmentioning

confidence: 99%

Bioinorganic Photochemistry: Frontiers and Mechanisms

et al. 2005

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“…Apart from photosplitting of water, other photochemical activities of TiO 2 include adsorption and desorption of O 2 , CO 2 , CO, halides, or various organic compounds on nanostructured TiO 2 surface [359][360][361][362][363][364][365][366][367][368][369][370][371][372][373] and photo-oxidation/reduction of molecular nitrogen, NO 2 , NH 3 , CO 2 , or halides. [374][375][376][377][378][379][380][381][382][383][384][385][386][387][388][389] Photocatalysis being a surface phenomenon, surface area is very important in determining the amount of reaction sites, and charge carriers have to be utilized properly to improve their ability to initiate surface reactions. On the other hand, TiO 2 crystallinity should be high to prevent the recombination of e − and h + .…”

Section: Surface Modification Of the Tio 2 Nanostructurementioning

confidence: 99%

The design, fabrication, and photocatalytic utility of nanostructured semiconductors: focus on TiO2-based nanostructures

Banerjee¹

2011

NSA

211

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Recent advances in basic fabrication techniques of TiO2-based nanomaterials such as nanoparticles, nanowires, nanoplatelets, and both physical- and solution-based techniques have been adopted by various research groups around the world. Our research focus has been mainly on various deposition parameters used for fabricating nanostructured materials, including TiO2-organic/inorganic nanocomposite materials. Technically, TiO2 shows relatively high reactivity under ultraviolet light, the energy of which exceeds the band gap of TiO2. The development of photocatalysts exhibiting high reactivity under visible light allows the main part of the solar spectrum to be used. Visible light-activated TiO2 could be prepared by doping or sensitizing. As far as doping of TiO2 is concerned, in obtaining tailored material with improved properties, metal and nonmetal doping has been performed in the context of improved photoactivity. Nonmetal doping seems to be more promising than metal doping. TiO2 represents an effective photocatalyst for water and air purification and for self-cleaning surfaces. Additionally, it can be used as an antibacterial agent because of its strong oxidation activity and superhydrophilicity. Therefore, applications of TiO2 in terms of photocatalytic activities are discussed here. The basic mechanisms of the photoactivities of TiO2 and nanostructures are considered alongside band structure engineering and surface modification in nanostructured TiO2 in the context of doping. The article reviews the basic structural, optical, and electrical properties of TiO2, followed by detailed fabrication techniques of 0-, 1-, and quasi-2-dimensional TiO2 nanomaterials. Applications and future directions of nanostructured TiO2 are considered in the context of various photoinduced phenomena such as hydrogen production, electricity generation via dye-sensitized solar cells, photokilling and self-cleaning effect, photo-oxidation of organic pollutant, wastewater management, and organic synthesis.

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“…Photocatalytic reduction of CO 2 using photosensitive semiconductor powders has been widely studied in aqueous solutions [6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22] or supercritical fluid [23]. In particular, the photoreduction of CO 2 with water into organic compounds using various TiO 2 photocatalysts has attracted the major interest.…”

Section: Introductionmentioning

confidence: 99%

Photoreduction of Carbon Dioxide to Formic Acid in Aqueous Suspension: A Comparison between Phthalocyanine/TiO2 and Porphyrin/TiO2 Catalysed Processes

et al. 2014

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Abstract:Composite materials prepared by loading polycrystalline TiO2 powders with lipophilic highly branched Cu(II)-and metal-free phthalocyanines or porphyrins, which have been used in the past as photocatalysts for photodegradative processes, have been successfully tested for the efficient photoreduction of carbon dioxide in aqueous suspension affording significant amounts of formic acid. The results indicated that the presence of the sensitizers is beneficial for the photoactivity, confirming the important role of Cu(II) co-ordinated in the middle of the macrocycles. A comparison between Cu(II) phthalocyanines and Cu(II) porphyrins indicated that the Cu(II)-phthalocyanine sensitizer OPEN ACCESSMolecules 2015, 20 397 was more efficient in the photoreduction of CO2 to formic acid, probably due to its favorable reduction potential.

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The photocatalysed reduction of aqueous sodium carbonate to carbon using platinised titania

Cited by 25 publications

References 0 publications

Bioinorganic Photochemistry: Frontiers and Mechanisms

Bioinorganic Photochemistry: Frontiers and Mechanisms

The design, fabrication, and photocatalytic utility of nanostructured semiconductors: focus on TiO2-based nanostructures

Photoreduction of Carbon Dioxide to Formic Acid in Aqueous Suspension: A Comparison between Phthalocyanine/TiO2 and Porphyrin/TiO2 Catalysed Processes

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