Effect of Lattice Distortion on Photocatalytic Performance of TiO2

Nishikawa, Masami; Yuto, Soichiro; Nakajima, Tomohiko; Tsuchiya, Toshio; Saito, Nobuo

doi:10.1007/s10562-016-1928-x

Cited by 15 publications

(6 citation statements)

References 23 publications

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“…Besides transition metal doping, similar phenomena have been reported as well in main group metal doping such as Ga, Sn into TiO 2 [22][23][24][25]. Different from the original electron configuration of TiO 2 , the new e − states created by metal element doping can enhance the capture of photogenerated electrons and improve the separation of charge carriers [26][27][28].…”

Section: Introductionsupporting

confidence: 61%

Efficient Dye Contaminant Elimination and Simultaneously Electricity Production via a Bi-Doped TiO2 Photocatalytic Fuel Cell

Dong

Zhao

et al. 2022

Nanomaterials

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TiO2 develops a higher efficiency when doping Bi into it by increasing the visible light absorption and inhibiting the recombination of photogenerated charges. Herein, a highly efficient Bi doped TiO2 photoanode was fabricated via a one-step modified sol-gel method and a screen-printing technique for the anode of photocatalytic fuel cell (PFC). A maximum degradation rate of 91.2% of Rhodamine B (RhB) and of 89% after being repeated 5 times with only 2% lost reflected an enhanced PFC performance and demonstrated an excellent stability under visible-light irradiation. The excellent degradation performance was attributed to the enhanced visible-light response and decreased electron-hole recombination rate. Meanwhile, an excellent linear correlation was observed between the efficient photocurrent of PFC and the chemical oxygen demand of solution when RhB is sufficient.

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Section: Introductionsupporting

confidence: 61%

Efficient Dye Contaminant Elimination and Simultaneously Electricity Production via a Bi-Doped TiO2 Photocatalytic Fuel Cell

Dong

Zhao

et al. 2022

Nanomaterials

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“…In principle, if the symmetry of a crystal structure was deliberately broken, a dipole moment can be expected because of the displacement of positive and negative charge centers of the unit cells 13 . In this scenario, a significant electric field will be built up along the dipole direction throughout the whole semiconductor film, as a result of which the bulk band bending (i.e., the driving force of CST) will be possible 14 . An alternative way to create dipoles is to induce Jahn-Teller effect by lattice distortion (such as tension/compression of the unit cell) 15,16 .…”

mentioning

confidence: 99%

Lattice distortion induced internal electric field in TiO2 photoelectrode for efficient charge separation and transfer

et al. 2020

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Providing sufficient driving force for charge separation and transfer (CST) is a critical issue in photoelectrochemical (PEC) energy conversion. Normally, the driving force is derived mainly from band bending at the photoelectrode/electrolyte interface but negligible in the bulk. To boost the bulky driving force, we report a rational strategy to create effective electric field via controllable lattice distortion in the bulk of a semiconductor film. This concept is verified by the lithiation of a classic TiO 2 (Li-TiO 2) photoelectrode, which leads to significant distortion of the TiO 6 unit cells in the bulk with well-aligned dipole moment. A remarkable internal builtin electric field of~2.1 × 10 2 V m −1 throughout the Li-TiO 2 film is created to provide strong driving force for bulky CST. The photoelectrode demonstrates an over 750% improvement of photocurrent density and 100 mV negative shift of onset potential upon the lithiation compared to that of pristine TiO 2 film.

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“…[7-9,2l] A well-known heterojunction exists between cadmium sulfide and titanium dioxide (CdS/TiO 2 ). [2h,i] The efficiency of CdS/TiO 2 to transfer photoelectrons from the visible-lightactivated cadmium sulfide (2.4 eV, 517 nm) to ultraviolet-lightactivated titanium dioxide (3.2 eV, 387 nm 4 ) is accomplished through close contact of the CdS/TiO 2 heterojunction. Scheme 1.…”

Section: Straddling Staggered and Broken Heterojunction Band Gapsmentioning

confidence: 99%

“…The three modes of functionalising heterogeneous semiconductors. [4,5] Literature has reported five photoelectron migration mechanisms that occur between two semiconductors. The first three are described in Figure 4.…”

Section: Straddling Staggered and Broken Heterojunction Band Gapsmentioning

confidence: 99%

“…After supplying the required energy, an electron is promoted from the valence to conduction band, and an exciton pair is generated. The charges (a free electron and positive hole) migrate to the semiconductor's surface where redox processes occur [2,3,4] . The energy of a semiconductor's band gap ( E ) can be related to the respective wavelength (λ) through the following relationship (Equation :

\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr {\bf E}={\bf h \nu },{\rm \ }{\bf w h e r e}{\rm \ }{\bf \nu }={{{\bf c}}\over{{\bf \lambda }}}{\rm \ },{\rm \ }\hfill\cr {\rm \ }{\bf E}={{{\bf h c}}\over{{\bf \lambda }}}\hfill\cr}}

…”

Section: Introductionmentioning

confidence: 99%

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Adducing Knowledge Capabilities of Instrumental Techniques Through the Exploration of Heterostructures’ Modification Methods

Underwood

Robinson

2022

ChemPhysChem

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The ongoing evolution of technology has facilitated the global research community to rapidly escalate the constant development of novel advancements in science. At the forefront of such achievements in the field of photocatalysis is the utilisation, and in oftentimes, the adaptation of modern instrumentation to understand photo‐physical properties of complex heterostructures. For example, coupling in‐situ X‐ray Raman scattering spectroscopy for real‐time degradation of catalytic materials.

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Effect of Lattice Distortion on Photocatalytic Performance of TiO2

Cited by 15 publications

References 23 publications

Efficient Dye Contaminant Elimination and Simultaneously Electricity Production via a Bi-Doped TiO2 Photocatalytic Fuel Cell

Efficient Dye Contaminant Elimination and Simultaneously Electricity Production via a Bi-Doped TiO2 Photocatalytic Fuel Cell

Lattice distortion induced internal electric field in TiO2 photoelectrode for efficient charge separation and transfer

Adducing Knowledge Capabilities of Instrumental Techniques Through the Exploration of Heterostructures’ Modification Methods

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