CO2 Reduction to Valuable Chemicals on TiO2-Carbon Photocatalysts Deposited on Silica Cloth

Morawski, Antoni W.; Ćmielewska, Katarzyna; Witkowski, Kordian; Kusiak-Nejman, Ewelina; Pełech, Iwona; Staciwa, Piotr; Ekiert, Ewa; Sibera, D.; Wanag, Agnieszka; Gano, Marcin; Narkiewicz, U.

doi:10.3390/catal12010031

Cited by 10 publications

(3 citation statements)

References 24 publications

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“…A CQD/TNT nanocomposite yields more than two times higher production rates both for CO and CH 4 compared to those of bare TNTs [ 129 ]. Another study presented by Morawski et al [ 130 ] stated that combining commercial P25 with carbon spheres then depositing this composite on glass fiber fabric showed high efficiency and selectivity in CO 2 reduction into CO.…”

Section: Strategy Iii: Formation Of the Junction With Tiomentioning

confidence: 99%

Photocatalytic Carbon Dioxide Conversion by Structurally and Materially Modified Titanium Dioxide Nanostructures

Fawzi

Rani

Roy

et al. 2022

IJMS

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TiO2 has aroused considerable attentions as a promising photocatalytic material for decades due to its superior material properties in several fields such as energy and environment. However, the main dilemmas are its wide bandgap (3–3.2 eV), that restricts the light absorption in limited light wavelength region, and the comparatively high charge carrier recombination rate of TiO2, is a hurdle for efficient photocatalytic CO2 conversion. To tackle these problems, lots of researches have been implemented relating to structural and material modification to improve their material, optical, and electrical properties for more efficient photocatalytic CO2 conversion. Recent studies illustrate that crystal facet engineering could broaden the performance of the photocatalysts. As same as for nanostructures which have advantages such as improved light absorption, high surface area, directional charge transport, and efficient charge separation. Moreover, strategies such as doping, junction formation, and hydrogenation have resulted in a promoted photocatalytic performance. Such strategies can markedly change the electronic structure that lies behind the enhancement of the solar spectrum harnessing. In this review, we summarize the works that have been carried out for the enhancement of photocatalytic CO2 conversion by material and structural modification of TiO2 and TiO2-based photocatalytic system. Moreover, we discuss several strategies for synthesis and design of TiO2 photocatalysts for efficient CO2 conversion by nanostructure, structure design of photocatalysts, and material modification.

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Section: Strategy Iii: Formation Of the Junction With Tiomentioning

confidence: 99%

Photocatalytic Carbon Dioxide Conversion by Structurally and Materially Modified Titanium Dioxide Nanostructures

Fawzi

Rani

Roy

et al. 2022

IJMS

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“…The composites of titania with carbon spheres used for the reduction in CO 2 has been studied within the project PhotoRed [ 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

DFT Calculation of Carbon-Doped TiO2 Nanocomposites

Gustavsen,

Feng,

Huang

et al. 2023

Materials

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Titanium dioxide (TiO2) has been proven to be an excellent material for mitigating the continuous impact of elevated carbon dioxide concentrations. Carbon doping has emerged as a promising strategy to enhance the CO2 reduction performance of TiO2. In this study, we investigated the effects of carbon doping on TiO2 using density functional theory (DFT) calculations. Two carbon doping concentrations were considered (4% and 6%), denoted as TiO2-2C and TiO2-3C, respectively. The results showed that after carbon doping, the band gaps of TiO2-2C and TiO2-3C were reduced to 1.58 eV and 1.47 eV, respectively, which is lower than the band gap of pure TiO2 (2.13 eV). This indicates an effective improvement in the electronic structure of TiO2. Barrier energy calculations revealed that compared to pure TiO2 (0.65 eV), TiO2-2C (0.54 eV) and TiO2-3C (0.59 eV) exhibited lower energy barriers, facilitating the transition to *COOH intermediates. These findings provide valuable insights into the electronic structure changes induced by carbon doping in TiO2, which can contribute to the development of sustainable energy and environmental conservation measures to address global climate challenges.

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“…The capability to produce these unusual nanocarbon allotropes at high purity by a straightforward electrolysis process opens an array of inexpensive unique materials with high strength, electrical and thermal conductivity, flexibility, charge storage, lubricant, and robustness properties. A new photocatalyst for CO 2 reduction is presented by Morawski et al [5]. The photocatalyst is prepared from a combination of a commercial TiO 2 with a mesopore structure and carbon spheres with a microporous structure with high CO 2 adsorption capacity.…”

mentioning

confidence: 99%