Preparation, characterization and photocatalytic properties of cerium doped TiO2: On the effect of Ce loading on the photocatalytic reduction of carbon dioxide

Matějová, Lenka; Kočí, Kamila; Reli, Martin; Čapek, Libor; Hospodková, A.; Peikertová, Pavlína; Matěj, Zdeněk; Obalová, Lucie; Wach, Anna; Kuśtrowski, Piotr; Kotarba, Andrzej

doi:10.1016/j.apcatb.2014.01.015

Cited by 111 publications

(45 citation statements)

References 59 publications

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“…Until now, many studies have reported the use of various heterogeneous catalysts for the photocatalytic conversion of CO 2 by H 2 O [9][10][11]. However, the main product, in most cases, is H 2 rather than carbon sources [12,13]. This is because formation of H 2 is a more preferred process compared to the reduction of CO 2 , since it is easier to reduce H 2 O to H 2 (E 0 = −0.41 V at pH = 7 vs. NHE) than to reduce CO 2 to even the simplest CO carbon source (E 0 = −0.52 V at pH = 7 vs. NHE) [14,15].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of well-shaped Sr2KTa5O15 nanorods with a tetragonal tungsten bronze structure by a flux method for artificial photosynthesis

Huang

Teramura

Hosokawa

et al. 2016

Applied Catalysis B: Environmental

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a b s t r a c tSr 2 KTa 5 O 15 nanorods with a tetragonal tungsten bronze structure were synthesized by a facile one-pot method using potassium chloride (KCl) as flux. Only the flux method obtained pure nanorods under the same calcination temperature and time comparing with that of solid-state reaction (SSR) and polymerized complex (PC) methods. The as-fabricated Sr 2 KTa 5 O 15 nanorods with a Ag cocatalyst showed relatively high activity and good selectivity toward CO evolution in the photocatalytic conversion of CO 2 by H 2 O. Stoichiometric amounts of O 2 as an oxidation product together with those of CO and H 2 as reduction products were obtained, indicating that H 2 O worked as an electron donor in the photocatalytic conversion of CO 2 . The Sr 2 KTa 5 O 15 nanorods fabricated at 1173 K for 3 h in the mass ratio of KCl flux to precursors at 1.0 afforded the highest formation rate of CO evolution (65.5 mol h −1 ) and good selectivity toward CO evolution (88.7%).

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Section: Introductionmentioning

confidence: 99%

Fabrication of well-shaped Sr2KTa5O15 nanorods with a tetragonal tungsten bronze structure by a flux method for artificial photosynthesis

Huang

Teramura

Hosokawa

et al. 2016

Applied Catalysis B: Environmental

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“…From that point of view, better position of conduction band with respect to band gap could be a reason of higher catalytic performance of bicrystalline anatase-brookite phase compared with the pure phases. It was reported [42,58] the higher conduction band edge corresponds with higher efficiency CO 2 photocatalytic reaction (conduction band edge of photocatalyst is higher than the reduction potential of H ? ).…”

Section: Aspects Influencing the Photocatalytic Reduction Of Co 2 Andmentioning

confidence: 97%

Preparation, characterization and photocatalytic performance of TiO2 prepared by using pressurized fluids in CO2 reduction and N2O decomposition

Kočí

Matějová

Obalová

et al. 2015

J Sol-Gel Sci Technol

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TiO 2 photocatalyst was prepared unconventionally, using the sol-gel process controlled within the reverse micelles and the processing by pressurized hot fluids as an alternative to standard calcination. Conventional calcined TiO 2 was prepared as well. Textural, microstructural and optical properties of prepared photocatalysts were characterized by using nitrogen physisorption, powder X-ray diffraction and DR UV-Vis spectroscopy. The photocatalytic properties of developed TiO 2 catalysts were investigated in the photocatalytic reduction of CO 2 and photocatalytic decomposition of N 2 O. It was revealed that TiO 2 processed by pressurized hot fluids shows significantly improved textural properties and different crystallinity compared to its calcined analog. Yields of both reaction products (H 2 and CH 4 ) of CO 2 photoreduction were higher for the extracted TiO 2 photocatalyst. The same result was achieved in N 2 O photodecomposition. The maximum N 2 O conversion (83 % after 20 h of illumination) in inert gas was reached also over the TiO 2 extracted photocatalyst, and it can be attributed to simultaneous N 2 O photocatalytic decomposition and N 2 O photolysis. Reaction kinetics of N 2 O-photoinduced decomposition was described well by the pseudo-first-rate law. The surface heterojunction of bicrystalline anatase-brookite phase corresponded to better catalytic activity of TiO 2 processed by pressurized hot fluids in both reactions, in a consequence of reduced electron-hole pair recombination. Graphical Abstract& Kamila Kočí

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“…The most important advantage provided by TiO 2 loaded cementitious materials is that the only requirements are water, oxygen and solar light [5]. In order to activate TiO 2 under solar light different kinds of titania modification with non metals and metal ions are carried out by either inhibiting the electron-hole recombination or narrowing the band gap [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Self-cleaning properties of cement plates loaded with N,C-modified TiO2 photocatalysts

Janus

Zatorska

Czyżewski

et al. 2015

Applied Surface Science

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Preparation, characterization and photocatalytic properties of cerium doped TiO2: On the effect of Ce loading on the photocatalytic reduction of carbon dioxide

Cited by 111 publications

References 59 publications

Fabrication of well-shaped Sr2KTa5O15 nanorods with a tetragonal tungsten bronze structure by a flux method for artificial photosynthesis

Fabrication of well-shaped Sr2KTa5O15 nanorods with a tetragonal tungsten bronze structure by a flux method for artificial photosynthesis

Preparation, characterization and photocatalytic performance of TiO2 prepared by using pressurized fluids in CO2 reduction and N2O decomposition

Self-cleaning properties of cement plates loaded with N,C-modified TiO2 photocatalysts

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