TiO2-graphene oxide nanocomposite as advanced photocatalytic materials

Štengl, Václav; Bakardjieva, Snejana; Grygar, Tomáš Matys; Bludská, Jana; Kormunda, Martin

doi:10.1186/1752-153x-7-41

Cited by 232 publications

(102 citation statements)

References 33 publications

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“…In the nanocomposite sample, copper oxide nanoparticles are coated with SiO 2 nanoparticles. Therefore, when the surface area of CuO/SiO 2 nanocomposites is measured, it is possible that its size is dominantly determined by the surface properties of the amorphous SiO 2 rather than CuO [34]. For this reason, a relatively low specific surface of the CuO/SiO 2 nanocomposites is apparent compared to that of CuO nanoparticles.…”

Section: Bet Analysismentioning

confidence: 99%

Investigation of sol-gel processed CuO/SiO2 nanocomposite as a potential photoanode material

Tenkyong¹,

Bachan²,

Raja³

et al. 2015

Materials Science-Poland

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Synthesis and characterization of a highly efficient photoconductive nanocomposite comprising of two common metal oxides: copper oxide (CuO) and silicon dioxide (SiO 2 ) are being reported in this paper. The CuO/SiO 2 nanocomposite has been synthesized using a cost-effective and facile sol gel route. The structural, chemical and optical properties of the prepared samples have been studied using various characterization techniques. The UV-Vis analysis revealed better absorption in the case of the nanocomposite as compared to its parent materials. X-ray diffraction (XRD) analysis has been employed to determine the structural formation of the nanocomposite and the crystallite size with the use of Scherrer's formula. The photo conductivity study of the sample showed enhanced photocurrent in the case of nanocomposite as compared to its single components, thus, presenting it as a potential candidate for solar cell applications, especially as photoanode material in the dye-sensitized solar cells (DSSC).

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Section: Bet Analysismentioning

confidence: 99%

Investigation of sol-gel processed CuO/SiO2 nanocomposite as a potential photoanode material

Tenkyong¹,

Bachan²,

Raja³

et al. 2015

Materials Science-Poland

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“…The relative sensitivity factors of carbon and oxygen were obtained from CASA XPS standard table. 40 The calculated C/O ratio of GO and RGO samples are summarised in Table 2. Tables 3 and 4 show the tted results of carbon (C 1s) and oxygen (O 1s) XPS spectra of RGO samples, respectively.…”

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confidence: 99%

Solar mediated reduction of graphene oxide

et al. 2017

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This paper explores the reduction of water dispersed graphene oxide (GO) by sunlight as an environmentally friendly alternative to conventional methods of reduction of GO. The possible mechanism of the reduction process is delineated. The electrical and thermal conductivity, the degree of reduction and structural defects of sunlight reduced GO (sRGO) are studied thoroughly and compared with RGO samples produced through hydrazine (hRGO) and hydrothermal (hyRGO) reduction routes. The study reveals that the production of sRGO is feasible and its electronic properties are on a par with those of hRGO. Interestingly, sRGO showed the least structural defects, good dispersibility and higher conductivity vis-avis its counterparts. This cost effective and environmentally friendly method of reducing GO to RGO with enhanced electronic properties may find applications in bio-sensing and electrochemical energy storage devices.

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“…For its particular properties and for its higher amount of accessible surface area, porous graphene could be a promising candidate as material for the development of new TiO 2 -porous graphene nanocomposites. A first study has been conducted by Stengl [111], where they synthesized mesoporous TiO 2 -graphene oxide nanocomposites with a specific surface area of almost ∼80-200 m 2 g −1 , larger than those of TiO 2 nanoparticles (P25) [108].The authors reported a better photocatalytic degradation of butane in the gas phase attributed different effects including the increase in specific surface area. By developing suitable nano-manipulation and nano-assembling techniques [112] porous graphene is a very attractive materials for a range of applications.…”

Section: Discussionmentioning

confidence: 99%

Synthesis, Properties and Potential Applications of Porous Graphene: A Review

Russo

Compagnini

2013

Nano-Micro Lett.

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Abstract:Since the discovery of graphene, many efforts have been done to modify the graphene structure for integrating this novel material to nanoelectronics, fuel cells, energy storage devices and in many other applications. This leads to the production of different types of graphene-based materials, which possess properties different from those of pure graphene. Porous graphene is an example of this type of materials. It can be considered as a graphene sheet with some holes/pores within the atomic plane. Due to its spongy structure, porous graphene can have potential applications as membranes for molecular sieving, energy storage components and in nanoelectronics. In this review, we present the recent progress in the synthesis of porous graphene. The properties and the potential applications of this new material are also discussed.

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TiO2-graphene oxide nanocomposite as advanced photocatalytic materials

Cited by 232 publications

References 33 publications

Investigation of sol-gel processed CuO/SiO2 nanocomposite as a potential photoanode material

Investigation of sol-gel processed CuO/SiO2 nanocomposite as a potential photoanode material

Solar mediated reduction of graphene oxide

Synthesis, Properties and Potential Applications of Porous Graphene: A Review

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