Photocatalysis for new energy production

Matsuoka, Makoto; Kitano, Masaaki; Takeuchi, Masato; Tsujimaru, Koichiro; Anpo, Masakazu; Thomas, John Meurig

doi:10.1016/j.cattod.2007.01.042

Cited by 358 publications

(145 citation statements)

References 68 publications

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“…[20] Compared to noble metals (such as Pt, Ag, Rh), transition metal/metal oxides are more attractive co-catalysts for lowcost photocatalytic applications. [32][33][34][35][36][37][38][39][40][41][42][43] In particular,v arious Cu speciess uch as Cu [32,38] and CuO x [39,40] have been used to promote the photoactivity of anatase TiO 2 due to its advantages such as abundance,n on-toxicity,a nd large work function (4.65 eV). [34][35][36][37][38] Herein, Cu nanoclusters decorated brookite TiO 2 quasi nanocubes (BTN) surfaces (Cu-BTN) are synthesized via a one-pot hydrothermal process and applieda sp hotocatalyst for CO 2 photoreduction with H 2 Ot og enerate solar fuels.…”

Section: Introductionmentioning

confidence: 99%

One‐Pot Synthesis of Cu‐Nanocluster‐Decorated Brookite TiO₂Quasi‐Nanocubes for Enhanced Activity and Selectivity of CO₂ Photoreduction to CH₄

et al. 2017

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A new kind of metallic Cu‐loaded brookite TiO2 composite, in which Cu nanoclusters with a small size of 1–3 nm are decorated on brookite TiO2 quasi nanocube (BTN) surfaces (hereafter referred to as Cu‐BTN), is synthesized via a one‐pot hydrothermal process and then used as photocatalyst for CO2 reduction. It was found that the decoration of Cu nanoclusters on BTN surfaces can improve the activity and selectivity of CO2 photoreduction to CH4, and 1.5 % Cu‐BTN gives a maximum overall photocatalytic activity (150.9 μmol g−1 h−1) for CO/CH4 production, which is ≈11.4 and ≈3.3 times higher than those of pristine BTN (13.2 μmol g−1 h−1) and Ag‐BTN (45.2 μmol g−1 h−1). Moreover, the resultant Cu‐BTN products can promote the selective generation of CH4 as compared to CO due to the number of surface oxygen vacancies and the CO2/H2O adsorption behavior, which differs from that of the pristine BTN. The present results demonstrate that brookite TiO2 would be a potential effective photocatalyst for CO2 photoreduction, and that Cu nanoclusters can act as an inexpensive and efficient co‐catalyst alternative to the commonly used noble metals to improve the photoactivity and selectivity for CO2 reduction to CH4.

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Section: Introductionmentioning

confidence: 99%

One‐Pot Synthesis of Cu‐Nanocluster‐Decorated Brookite TiO₂Quasi‐Nanocubes for Enhanced Activity and Selectivity of CO₂ Photoreduction to CH₄

et al. 2017

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“…The importance of titania as one of the key materials for sustainable processes ranging from pollutants abatement 1,2 to energy production [3][4][5] has triggered an intensive quest for its structure-functionality relationships. This target can be addressed by surface-science approaches applied to well-defined systems, 6 which recently clarified the dependence of photocatalytic activity of anatase and rutile TiO 2 single crystals on some important bulk properties 7 and established the reactivity in the dark of regular surfaces and derived steps of TiO 2 single crystals.…”

Section: Introductionmentioning

confidence: 99%

Shape-controlled TiO₂nanoparticles and TiO₂P25 interacting with CO and H₂O₂molecular probes: a synergic approach for surface structure recognition and physico-chemical understanding

Deiana

Minella

Tabacchi

et al. 2013

Phys. Chem. Chem. Phys.

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Integrated studies of CO on truncated bipyramidal TiO 2 anatase nanoparticles mainly exposing smooth (101) surfaces provide the missing link between TiO 2 single crystals and commercial TiO 2 nanopowders with complex morphology. The synergy among high resolution transmission electron microscopy, IR spectroscopy and modeling correlates adsorbed CO stretching frequency to anatase surface type, and reveals how disorder of the adsorbed CO layer affects CO/TiO 2 IR bands.

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“…Understanding how reactivity is related to structure is a crucial issue for nanostructured titania, a key material for sustainable nanotechnologies, from energy production [1][2][3] to pollutants abatement. 4,5 Among TiO 2 polymorphs, anatase is widely employed because of its higher activity 6,7 and, consequently, a number of preparation methods of TiO 2 anatase nanoparticles (NP) have been developed, ranging from commercially exploited sol-gel and pyrolysis (as for the well-known TiO 2 P25 by Evonik) procedures, to hydrothermal synthesis in the presence of shape-controllers.…”

Section: Introductionmentioning

confidence: 99%

Surface features of TiO2 nanoparticles: combination modes of adsorbed CO probe the stepping of (101) facets

Deiana

Tabacchi

Maurino

et al. 2013

Phys. Chem. Chem. Phys.

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Integrated studies of CO adsorption on TiO 2 materials of different morphology and surface complexity identify, for the first time, frustrated translational CO modes by detecting their combination with the CO stretching mode (νCO). All the considered materials exhibit IR spectra with low-intensity bands in the 2235-2205 cm -1 range, a region where components due to strong Lewis acid Ti 4+ sites may be present as well. These observations lead to a powerful method for associating high-wavenumber bands to TiO 2 surface features and interpreting IR spectra of drastically complex/defective TiO 2 materials. The proposed band assignment is based on vibrational analyses of CO/TiO 2 theoretical models, indicating that the frustrated translational mode with frequency in the 30-50 cm -1 range involved in the observed combination bands is perpendicular to the Ti 4+ rows. Our results reveal that this low-energy CO mode is much more sensitive than νCO in probing the TiO 2 surface topography, and that its higher-energy components can be specifically associated to the presence of steps on the (101) faces. In a broader perspective, the frustrated translational CO mode surface sensitivity could become a key tool for detecting specific defective sites on TiO 2 surfaces.

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Photocatalysis for new energy production

Cited by 358 publications

References 68 publications

One‐Pot Synthesis of Cu‐Nanocluster‐Decorated Brookite TiO₂Quasi‐Nanocubes for Enhanced Activity and Selectivity of CO₂ Photoreduction to CH₄

One‐Pot Synthesis of Cu‐Nanocluster‐Decorated Brookite TiO₂Quasi‐Nanocubes for Enhanced Activity and Selectivity of CO₂ Photoreduction to CH₄

Shape-controlled TiO₂nanoparticles and TiO₂P25 interacting with CO and H₂O₂molecular probes: a synergic approach for surface structure recognition and physico-chemical understanding

Surface features of TiO2 nanoparticles: combination modes of adsorbed CO probe the stepping of (101) facets

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Photocatalysis for new energy production

Cited by 358 publications

References 68 publications

One‐Pot Synthesis of Cu‐Nanocluster‐Decorated Brookite TiO2Quasi‐Nanocubes for Enhanced Activity and Selectivity of CO2 Photoreduction to CH4

One‐Pot Synthesis of Cu‐Nanocluster‐Decorated Brookite TiO2Quasi‐Nanocubes for Enhanced Activity and Selectivity of CO2 Photoreduction to CH4

Shape-controlled TiO2nanoparticles and TiO2P25 interacting with CO and H2O2molecular probes: a synergic approach for surface structure recognition and physico-chemical understanding

Surface features of TiO2 nanoparticles: combination modes of adsorbed CO probe the stepping of (101) facets

Contact Info

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One‐Pot Synthesis of Cu‐Nanocluster‐Decorated Brookite TiO₂Quasi‐Nanocubes for Enhanced Activity and Selectivity of CO₂ Photoreduction to CH₄

One‐Pot Synthesis of Cu‐Nanocluster‐Decorated Brookite TiO₂Quasi‐Nanocubes for Enhanced Activity and Selectivity of CO₂ Photoreduction to CH₄

Shape-controlled TiO₂nanoparticles and TiO₂P25 interacting with CO and H₂O₂molecular probes: a synergic approach for surface structure recognition and physico-chemical understanding