Novel nanostructured-TiO2 materials for the photocatalytic reduction of CO2 greenhouse gas to hydrocarbons and syngas

Akhter, Parveen; Hussain, Murid; Saracco, Guido; Russo, Nunzio

doi:10.1016/j.fuel.2014.09.079

Cited by 83 publications

(45 citation statements)

References 45 publications

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“…The patterns are shifted along the intensity scale for clarity. Assignment of Miller indices was based on literature .…”

Section: Resultsmentioning

confidence: 99%

“…Analysis of the individual peaks and the resulting crystalline phases were performed by the Miller assignments according to Refs. .…”

Section: Methodsmentioning

confidence: 99%

“…The structure and phase of the prepared samples were identified by the X-ray powder diffraction (XRD). The measurements were carried out using the Rigaku Ultima IV X-ray diffractometer fitted with 2 kW X-ray tube operated at 40 kV and 30 mA (CuKa, k = 0.1542 nm), slit collimation system, Nickel CuKb (26,27). UV-Vis diffuse reflectance spectra were recorded with the use of UV-Vis-NIR Cary 5 equipped with an adapter for diffuse reflection spectra recording.…”

Section: Synthesis Of Tio 2 /B-sic Nanocompositesmentioning

confidence: 99%

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The Properties and Activity of TiO₂/beta‐SiC Nanocomposites in Organic Dyes Photodegradation

Pstrowska

Szyja

Czapor-Irzabek

et al. 2017

Photochem & Photobiology

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The TiO /beta-SiC nanocomposites containing 0-25 wt. % of beta-SiC were synthesized by the sol-gel method and tested in the photodegradation of methylene blue and methyl orange water solutions. With the increase in SiC content, only a slight decrease in energy band gap was observed (3.19-3.12 eV), together with significant increase in the surface area of the catalysts (42.7-80.4 m g ). In the synthesized material, the anatase phase of TiO was present in the form of small agglomerates resulting from the mechanical mixing process. In the process conditions (catalyst concentration 0.5 g L , initial dye concentration 100 ppm, light source 100 W UV-Vis lamp), we have observed no signs of catalyst deactivation. The significantly higher photodegradation activity of methylene blue than methyl orange can be attributed to the preferable pH of the solution compared to pH and the cationic character of the first dye. In case of methyl orange, pH process conditions substantially limit the contact of the catalyst with the dye, as negatively charged surface of the catalysts repels the dissociated anionic dye molecules.

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“…The patterns are shifted along the intensity scale for clarity. Assignment of Miller indices was based on literature .…”

Section: Resultsmentioning

confidence: 99%

“…Analysis of the individual peaks and the resulting crystalline phases were performed by the Miller assignments according to Refs. .…”

Section: Methodsmentioning

confidence: 99%

Section: Synthesis Of Tio 2 /B-sic Nanocompositesmentioning

confidence: 99%

See 1 more Smart Citation

The Properties and Activity of TiO₂/beta‐SiC Nanocomposites in Organic Dyes Photodegradation

Pstrowska

Szyja

Czapor-Irzabek

et al. 2017

Photochem & Photobiology

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“…For instance in references and , in which CO 2 :H 2 O molar ratios are 7.25 and 4.76 for anatase nanoparticles, respectively, H 2 was the main product followed by CO and CH 4 . In reference , in which CO 2 :H 2 O ratio is 10, using P25 no H 2 could be identified. As is also stated in reference , large amounts of H 2 O have a negative impact on the photocatalytic CO 2 reduction.…”

Section: Part I: Pure Crystalline Tio2mentioning

confidence: 99%

Photocatalytic CO₂ Reduction on TiO₂‐Based Materials under Controlled Reaction Conditions: Systematic Insights from a Literature Study

Moustakas

Strunk

2018

Chemistry A European J

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Photocatalytic CO conversion to hydrocarbons (sometimes referred to as 'artificial photosynthesis'), which mimics natural photosynthesis with purely inorganic photocatalysts, has the potential to simultaneously combat the energy crisis and the greenhouse effect. In more than half of all reported studies to date, TiO -based materials are used as the photocatalyst. Yet, the reaction conditions and reactor designs employed in previous studies cover a vast range, hindering mutual comparisons of observed activities and selectivity. In this work, a systematic literature study is attempted, including a selection of only such research publications which report experimental conditions of high purity and a proof of the carbon source (blank experiments, CO isotope labelling or stoichiometric O identification) for CO photoreduction. General trends were then detected and discussed, aiming to guide future research to more efficient photocatalytic systems.

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“…In this frame, photocatalysis is a promising technology, since it allows the use of CO 2 to synthetize fuels in the presence of an irradiated semiconductor [9][10][11]. This means that the primary source of energy of the entire process is light, opening new possibilities to use solar light in the next future [12].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Carbon Dioxide Photoreduction by a Cooperative Effect of Reactor Design and Titania Metal Promotion

et al. 2018

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An effective process based on the photocatalytic reduction of CO 2 to face on the one hand, the crucial problem of environmental pollution, and, on the other hand, to propose an efficient way to product clean and sustainable energy sources has been developed in this work. Particular attention has been paid to the sustainability of the process by using a green reductant (water) and TiO 2 as a photocatalyst under very mild operative conditions (room temperature and atmospheric pressure). It was shown that the efficiency in carbon dioxide photoreduction is strictly related to the process parameters and to the catalyst features. In order to formulate a versatile and high performing catalyst, TiO 2 was modified by oxide or metal species. Copper (in the oxide CuO form) or gold (as nanoparticles) were employed as promoting metal. Both photocatalytic activity and selectivity displayed by CuO-TiO 2 and Au-TiO 2 were compared, and it was found that the nature of the promoter (either Au or CuO) shifts the selectivity of the process towards two strategic products: CH 4 or H 2 . The catalytic results were discussed in depth and correlated with the physicochemical features of the photocatalysts.

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Novel nanostructured-TiO2 materials for the photocatalytic reduction of CO2 greenhouse gas to hydrocarbons and syngas

Cited by 83 publications

References 45 publications

The Properties and Activity of TiO₂/beta‐SiC Nanocomposites in Organic Dyes Photodegradation

The Properties and Activity of TiO₂/beta‐SiC Nanocomposites in Organic Dyes Photodegradation

Photocatalytic CO₂ Reduction on TiO₂‐Based Materials under Controlled Reaction Conditions: Systematic Insights from a Literature Study

Sustainable Carbon Dioxide Photoreduction by a Cooperative Effect of Reactor Design and Titania Metal Promotion

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Novel nanostructured-TiO2 materials for the photocatalytic reduction of CO2 greenhouse gas to hydrocarbons and syngas

Cited by 83 publications

References 45 publications

The Properties and Activity of TiO2/beta‐SiC Nanocomposites in Organic Dyes Photodegradation

The Properties and Activity of TiO2/beta‐SiC Nanocomposites in Organic Dyes Photodegradation

Photocatalytic CO2 Reduction on TiO2‐Based Materials under Controlled Reaction Conditions: Systematic Insights from a Literature Study

Sustainable Carbon Dioxide Photoreduction by a Cooperative Effect of Reactor Design and Titania Metal Promotion

Contact Info

Product

Resources

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The Properties and Activity of TiO₂/beta‐SiC Nanocomposites in Organic Dyes Photodegradation

The Properties and Activity of TiO₂/beta‐SiC Nanocomposites in Organic Dyes Photodegradation

Photocatalytic CO₂ Reduction on TiO₂‐Based Materials under Controlled Reaction Conditions: Systematic Insights from a Literature Study