Efficient Photochemical Water Splitting by a Chemically Modified n-TiO
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Khan, Shahed U. M.; Al-Shahry, Mofareh; Ingler, William B.

doi:10.1126/science.1075035

Cited by 4,024 publications

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“…It was found that TiO 2 modification by non-metals such as carbon (3) causes light absorption in the visible region. For this purpose different inorganic and organic carbon precursors were used (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21). Wide range of used precursors make it possible to widen TiO 2 activation range of irradiation to visible region.…”

Section: Introductionmentioning

confidence: 99%

Modification of Titanium Dioxide with Graphitic Carbon from Anthracene Thermal Decomposition as a Promising Method for Visible- Active Photocatalysts Preparation

Kusiak-Nejman

Wanag

Kowalczyk

et al. 2016

Journal of Advanced Oxidation Technologies

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Abstract:This work investigated the photocatalytic performance of TiO 2 photocatalysts modified with graphitic carbon under visible light with a very small component of UV. The graphitic carbon modification was conducted at 200-500 °C using thermal anthracene decomposition. The increase of calcination temperature leads to typical increase of crystallites size, decrease of the specific surface area and carbon content in modified samples. The characteristic peak for a skeletal in-plane vibrations of the anthracene ring located at 1522 cm -1 as well as the band at 1410 cm -1 assigned to C=C aromatic stretching vibrations mode were possible to observe. The analysis of the morphology using SEM confirmed the presence on new multi-layer carbonaceous flakes decorated with TiO 2 nanoparticles. TEM analysis and Raman studies proved the presence of graphitic structures covering the surface of the prepared TiO 2 /C photocatalysts. The highest photocatalytic activity, calculated on the basis of phenol photodegradation under visible light, was found for the photocatalyst modified with graphitic carbon at 400 °C (TiO 2 /C-400).

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Section: Introductionmentioning

confidence: 99%

Modification of Titanium Dioxide with Graphitic Carbon from Anthracene Thermal Decomposition as a Promising Method for Visible- Active Photocatalysts Preparation

Kusiak-Nejman

Wanag

Kowalczyk

et al. 2016

Journal of Advanced Oxidation Technologies

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“…50 In this context, gold nanoparticles (Au NPs) supported TiO 2 hybrid photocatalytic systems have attracted much attention because of their strong light absorption in the visible region, which arises from enhanced scattering and Localized Surface Plasmon Resonance (LSPR). [9][10][11] Due to LSPR, Au NPs can 55 effectively harvest the electromagnetic energy of the incident light and concentrate it into "plasmonic hotspots", which in turn can maximize the local field intensity by a factor of 10 6 . 12 Notably, one dimensional (1-D) TiO 2 nanostructures such as nanowires, nanotubes, nanofibers etc., afford ample room to 60 accommodate the nanoparticles compared to their bulk counterparts.…”

Section: Introductionmentioning

confidence: 99%

Modulating the interaction between gold and TiO₂nanowires for enhanced solar driven photoelectrocatalytic hydrogen generation

Sudhagar

Song

Devadoss

et al. 2015

Phys. Chem. Chem. Phys.

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The interaction strength of Au nanoparticles with pristine and nitrogen doped TiO 2 nanowire surface was analysed using density functional theory and their significance in enhancing the solar driven photoelectrocatalytic properties was elucidated. In this article, we prepared 4-dimethylaminopyridine capped Au nanoparticles decorated TiO 2 nanowires system. The density functional theory calculations show {101}facets of TiO 2 as the preferred phase for dimethylaminopyridine-Au nanoparticles anchoring 10 with a binding energy of -8.282 kcal/mol. Besides, the interaction strength of Au nanoparticles was enhanced nearly four-fold (-35.559 kcal/mol) at {101} facets via nitrogen doping, which indeed amplified the Au nanoparticle density on nitrided TiO 2 . The Au coated nitrogen doped TiO 2 (N-TiO 2 -Au) hybrid electrodes show higher absorbance owing to the light scattering effect of Au nanoparticles. In addition, N-TiO 2 -Au hybrid electrodes block the charge leakage from electrode to electrolyte and thus reduce the 15 charge recombination at electrode/electrolyte interface. Despite the beneficial band narrowing effect of nitrogen in TiO 2 on the electrochemical and visible light activity in N-TiO 2 -Au hybrid electrodes, it results low photocurrent generation at higher Au NPs loading (3.4×10 -7 M) due to light blocking to NTiO 2 surface. Strikingly, even with a ten-fold lower Au NPs loading (0.34×10 -7 M), the synergistic effects of nitrogen doping and Au NPs on N-TiO 2 -Au hybrid system yield high photocurrent compare to TiO 2 20 and TiO 2 -Au electrodes. As a result, N-TiO 2 -Au electrode produces nearly 270 µmol/hr cm -2 hydrogen, which is nearly two-fold higher than the pristine TiO 2 counterpart. The implications of these findings for the design of efficient hybrid photoelectrocatalytic electrodes are discussed.

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“…TiO2 has been widely used as a photocatalyst for photogeneration of hydrogen from water [12,13] , solar-energy conversion [14], and degradation of organic compounds [15], due to its high oxidative power, chemical stability, low cost, and non-toxicity. Much attention was also focused on its potential application in the electrode material of the lithium-ion battery [16][17][18][19].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Synthesis and characterization of TiO2-carbon nanocomposites with both micro- and mesopore size distributions

et al. 2010

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Synthesis and characterization of TiO 2 -carbon nanocomposites with both micro-and mesopore size distributions, Materials Letters (2010Letters ( ), doi: 10.1016Letters ( /j.matlet.2010 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Abstract: TiO2-carbon nanocomposites were synthesized by simply mixing a TiO2 sol with a semi-cured resorcinol and formaldehyde gel, followed by drying and pyrolysis at 1000 o C in an inert atmosphere. ACCEPTED MANUSCRIPTFor comparison, the pure resorcinol and formaldehyde gel and the pure TiO2 gol were also prepared, dried and pyrolysed in same conditions, respectively. The composites with a low TiO2 content had the similar pore size distribution (PSD) and crystallographic structure to that of the blank sample (i.e., micropore size distribution), However the presence of high content TiO2 in the composites effectively resulted in an increase in mesoporosity and a crystallographic structure of dominant rutile TiO2 in the TiO2-carbon nanocomposite.

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Efficient Photochemical Water Splitting by a Chemically Modified n-TiO ₂

Cited by 4,024 publications

References 19 publications

Modification of Titanium Dioxide with Graphitic Carbon from Anthracene Thermal Decomposition as a Promising Method for Visible- Active Photocatalysts Preparation

Modification of Titanium Dioxide with Graphitic Carbon from Anthracene Thermal Decomposition as a Promising Method for Visible- Active Photocatalysts Preparation

Modulating the interaction between gold and TiO₂nanowires for enhanced solar driven photoelectrocatalytic hydrogen generation

Synthesis and characterization of TiO2-carbon nanocomposites with both micro- and mesopore size distributions

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Efficient Photochemical Water Splitting by a Chemically Modified n-TiO 2

Cited by 4,024 publications

References 19 publications

Modification of Titanium Dioxide with Graphitic Carbon from Anthracene Thermal Decomposition as a Promising Method for Visible- Active Photocatalysts Preparation

Modification of Titanium Dioxide with Graphitic Carbon from Anthracene Thermal Decomposition as a Promising Method for Visible- Active Photocatalysts Preparation

Modulating the interaction between gold and TiO2nanowires for enhanced solar driven photoelectrocatalytic hydrogen generation

Synthesis and characterization of TiO2-carbon nanocomposites with both micro- and mesopore size distributions

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Product

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Efficient Photochemical Water Splitting by a Chemically Modified n-TiO ₂

Modulating the interaction between gold and TiO₂nanowires for enhanced solar driven photoelectrocatalytic hydrogen generation