Preparation of an Fe-doped visible-light-response TiO2 film electrode and its photoelectrocatalytic activity

Tang, Wenwei; Chen, Xiaoying; Jin, Xiaoning; Gong, Jiemin; Zeng, Xin

doi:10.1016/j.mseb.2014.04.011

Cited by 30 publications

(6 citation statements)

References 28 publications

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“…It is well known that TiO 2 doped with metal, such as W [92], Cr [93], Zr [94,103], and Fe [104], can form new energy states either within or beyond the VB and CB, decreasing the band gap energy. However, transition metals may also act as recombination sites and may cause thermal instability to the anatase phase of TiO 2 [17,24].…”

Section: Doped and Surface-modified Tio 2 Photoanodesmentioning

confidence: 99%

Achievements and Trends in Photoelectrocatalysis: from Environmental to Energy Applications

et al. 2015

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The great versatility of semiconductor materials and the possibility of generation of electrons, holes, hydroxyl radicals, and/or superoxide radicals have increased the applicability of photoelectrocatalysis dramatically in the contemporary world. Photoelectrocatalysis takes advantage of the heterogeneous photocatalytic process by applying a biased potential on a photoelectrode in which the catalyst is supported. This configuration allows more effectiveness of the separation of photogenerated charges due to light irradiation with energy being higher compared to that of the band gap energy of the semiconductor, which thereby leads to an increase in the lifetime of the electron-hole pairs. This work presents a compiled and critical review of photoelectrocatalysis, trends and future prospects of the technique applied in environmental protection studies, hydrogen generation, and water disinfection. Special attention will be focused on the applications of TiO 2 and the production of nanometric morphologies with a great improvement in the photocatalyst properties useful for the degradation of organic pollutants, the reduction of inorganic contaminants, the conversion of CO 2 , microorganism inactivation, and water splitting for hydrogen generation.

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Section: Doped and Surface-modified Tio 2 Photoanodesmentioning

confidence: 99%

Achievements and Trends in Photoelectrocatalysis: from Environmental to Energy Applications

et al. 2015

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“…To overcome this barrier of higher band gap, several modifications have been proposed. Doping TiO 2 with other materials, such as non-metals [11,12] and metals [13,14], has been investigated for extending the radiation absorption of TiO 2 to the visible range to maximize the use of the visible light region of solar spectrum. In the past few decades, considerable research studies have shown that doping TiO 2 with non-metal elements, such as carbon, boron, fluorine, nitrogen and sulphur, enables the realization of visible light-responsive TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous photocatalytic degradation of toluene in static environment employing thin films of nitrogen-doped nano-titanium dioxide

et al. 2018

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Photocatalytic semiconductor thin films have the ability to degrade volatile organic compounds (VOCs) causing numerous health problems. The group of VOCs called "BTEX" is abundant in houses and indoor of automobiles. Anatase phase of TiO 2 has a band gap of 3.2 eV and UV radiation is required for photogeneration of electrons and holes in TiO 2 particles. This band gap can be decreased significantly when TiO 2 is doped with nitrogen (N-TiO 2). Dopants like Pd, Cd, and Ag are hazardous to human health but N-doped TiO 2 can be used in indoor pollutant remediation. In this research, N-doped TiO 2 nano-powder was prepared and characterized using various analytical techniques. N-TiO 2 was made in sol-gel method and triethylamine (N(CH 2 CH 3) 3) was used as the N-precursor. Modified quartz cell was used to measure the photocatalytic degradation of toluene. N-doped TiO 2 nano-powder was illuminated with visible light (xenon lamp 200 W, λ = 330-800 nm, intensity = 1 Sun) to cause the degradation of VOCs present in static air. Photocatalyst was coated on a thin glass plate, using the doctor-blade method, was inserted into a quartz cell containing 2.00 µL of toluene and 35 min was allowed for evaporation/condensation equilibrium and then illuminated for 2 h. Remarkably, the highest value of efficiency 85% was observed in the 1 μm thick N-TiO 2 thin film. The kinetics of photocatalytic degradation of toluene by N-TiO 2 and P25-TiO 2 has been compared. Surface topology was studied by varying the thickness of the N-TiO 2 thin films. The surface nanostructures were analysed and studied with atomic force microscopy with various thin film thicknesses.

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“…Feng et al reported [31] that the effective anticorrosion behaviors can be attributed to the Fe-element incorporation which decreases electro-generated charge-carrier recombination and extends the electronic response range of Fe-doped semiconductor. Zeng et al also demonstrated [32] that the impedance (resistance) arc radii of the Fe-doped semiconductor film electrodes were smaller compared with the pure semiconductor film electrodes. The results further indicated that the Fe-doped semiconductor film electrode displayed a higher separation efficiency of electron-hole pairs and a faster charge-transfer than the pure semiconductor film electrode on the solid-liquid interface.…”

Section: Introductionmentioning

confidence: 99%

Implementation of stable electrochemical performance using a Fe0.01ZnO anodic material in alkaline Ni–Zn redox battery

Kwak

Kim

Park

et al. 2015

Chemical Engineering Journal

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Preparation of an Fe-doped visible-light-response TiO2 film electrode and its photoelectrocatalytic activity

Cited by 30 publications

References 28 publications

Achievements and Trends in Photoelectrocatalysis: from Environmental to Energy Applications

Achievements and Trends in Photoelectrocatalysis: from Environmental to Energy Applications

Heterogeneous photocatalytic degradation of toluene in static environment employing thin films of nitrogen-doped nano-titanium dioxide

Implementation of stable electrochemical performance using a Fe0.01ZnO anodic material in alkaline Ni–Zn redox battery

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