Carbon–Inorganic Hybrid Materials: The Carbon‐Nanotube/TiO<sub>2</sub> Interface

Anatase TiO 2 is typically a central component in high performance dye-sensitised solar cells (DSCs). This study demonstrates the benefits of high temperature synthesised mesoporous titania for the performance of solid-state DSCs. In contrast to earlier methods, the high temperature stability of mesoporous titania is enabled by the self-assembly of the amphiphilic block copolymer polyisoprene-block-polyethylene oxide (PI-b-PEO) which compartmentalises TiO 2 crystallisation, preventing the collapse of porosity at temperatures up to 700 • C. The systematic study of the temperature dependence on DSC performance reveals a parameter trade-off: while high temperature annealed anatase consisted of larger crystallites and had a higher conductivity, this came at the expense of a reduced specific surface area.While the reduction in specific surface areas was found to be detrimental for liquid-electrolyte DSC performance, solid-state DSCs benefitted from the increased anatase conductivity and exhibited a performance increase by a factor of three.

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“…19,42 X-ray diffraction of separately annealed samples was carried out with a Philips PW1830 Generator 3a.…”

Section: Wide-angle X-ray Scatteringmentioning

confidence: 99%

Improved conductivity in dye-sensitised solar cells through block-copolymer confined TiO₂crystallisation

Guldin

Hüttner

Tiwana

et al. 2011

Energy Environ. Sci.

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118

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“…There are no peaks for SWCNTs because crystal plains are non-existent. It is worth noting, from the lack of MWCNT spectral lines, that the CNTs evaluated are confirmed to be of single wall configuration [55][56][57]. MWCNTs are reported to have a peak at 2θ = 26.06˚, corresponding to the interplanner spacing of 0.342 nm between the tubes [58] [61].…”

Section: Characterization Of Pristine Swcntmentioning

confidence: 97%

“…Generally, most of these processes are either time consuming, cumbersome, expensive, lack the control for the deposition TiO 2 , and/or produce inferior results. A list of some of these processes include sol-gel [14][15][16][17][18], sol [19,20], hydrothermal [21,22], solvothermal [23], electrochemical oxidation [24], electrochemical deposition [25,26], electrophoretic co-deposition of TiO 2 -CNT films and deposition of TiO 2 onto CNT [27][28][29], alternative methods of sonochemical [30,31], chemical vapor deposition [32][33][34][35][36], and heterogeneous coagulation [37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Anatase Titanium Dioxide Coated Single Wall Carbon Nanotubes Manufactured by Sonochemical-Hydrothermal Technique

Clemens¹,

Wei²,

Wilson³

et al. 2013

OJCM

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A novel, cost effective, sonochemical-hydrothermal technique was used for the deposition of nanosized anatase titanium dioxide (TiO 2 ) onto single wall carbon nanotubes (SWCNTs). This technique is described and the characterization of the synthesized TiO 2 -SWCNTs is reported. The characterization techniques employed include scanning electron microscopy (SEM), Raman spectroscopy, and X-ray diffraction (XRD). From the characterization the size and morphology of the synthesized TiO 2 nanoparticles (deposited on the SWCNTs) are reported. Furthermore, it is demonstrated that the created TiO 2 nanoparticles are chemically attached to the SWCNTs. Also, an important correlation between calculated TiO 2 crystal size and the red shifts in the lowest Raman TiO 2 (E. g. ) predominate peak is reported. The synthesized TiO 2 -SWCNTs have potential for large scale production and application in a variety of new technologies such as clean energy power generation devices, electrical storage devices, photocatalysts, and sensors.

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“…25 Eder et al utilized benzyl alcohol (BA) as a surfactant to prepare carbon nanotube/TiO 2 and they inferred the coordination of BA hydroxyl groups with titanium atoms. 26 Shkrob et al proved the complexation between chemical OH groups of polyols and uncoordinated titanium sites to form Ti IV -O-R groups by IR spectroscopy and XANES.…”

Section: -27mentioning

confidence: 99%

Preparation of Dihydroxy Naphthalene/TiO₂Complex via Surface Modification and Their Photocatalytic H₂Production Performances Under Visible Light

Hu¹,

Li²,

Fan³

2013

Bulletin of the Korean Chemical Society

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The dihydroxy naphthalene/TiO 2 complexes with different substitution patterns were prepared by surface modification. X-ray diffraction, UV-Vis spectroscopy, photoluminescence, and X-ray photoelectron spectroscopy were used to characterize the prepared composite materials. The results indicated that the surface modification did not influence the crystallization of TiO 2 . The visible-light absorbances of prepared dihydroxy naphthalene/TiO 2 complexes could be assigned to the ligand-to-metal charge transfer. The obtained catalyst exhibited outstanding photocatalytic activity and stability under visible light. A linear relationship existed between the percentages of hydroxynaphthalenes coordinated on TiO 2 surface and H 2 production ability. The substitution pattern of dihydroxy naphthalene and CH 3 OH content could also influence the photocatalytic performance remarkably. The photocatalytic H 2 production ability was further improved after loading with ultra low concentration of Pt, 0.02 wt %. The possible mechanism was proposed.

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Carbon–Inorganic Hybrid Materials: The Carbon‐Nanotube/TiO₂ Interface

Cited by 214 publications

References 44 publications

Improved conductivity in dye-sensitised solar cells through block-copolymer confined TiO₂crystallisation

Improved conductivity in dye-sensitised solar cells through block-copolymer confined TiO₂crystallisation

Anatase Titanium Dioxide Coated Single Wall Carbon Nanotubes Manufactured by Sonochemical-Hydrothermal Technique

Preparation of Dihydroxy Naphthalene/TiO₂Complex via Surface Modification and Their Photocatalytic H₂Production Performances Under Visible Light

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Carbon–Inorganic Hybrid Materials: The Carbon‐Nanotube/TiO2 Interface

Cited by 214 publications

References 44 publications

Improved conductivity in dye-sensitised solar cells through block-copolymer confined TiO2crystallisation

Improved conductivity in dye-sensitised solar cells through block-copolymer confined TiO2crystallisation

Anatase Titanium Dioxide Coated Single Wall Carbon Nanotubes Manufactured by Sonochemical-Hydrothermal Technique

Preparation of Dihydroxy Naphthalene/TiO2Complex via Surface Modification and Their Photocatalytic H2Production Performances Under Visible Light

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Product

Resources

About

Carbon–Inorganic Hybrid Materials: The Carbon‐Nanotube/TiO₂ Interface

Improved conductivity in dye-sensitised solar cells through block-copolymer confined TiO₂crystallisation

Improved conductivity in dye-sensitised solar cells through block-copolymer confined TiO₂crystallisation

Preparation of Dihydroxy Naphthalene/TiO₂Complex via Surface Modification and Their Photocatalytic H₂Production Performances Under Visible Light