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Alam, Mohammad Jahangir; Cameron, D.C.

doi:10.1023/a:1019912312654

Cited by 146 publications

(49 citation statements)

References 24 publications

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“…[ 40 ] An alternative method uses titanium isopropoxide as the metal precursor. [ 41 ] This compounds is, however, very reactive to water and moisture and need to be stabilized with acids in order to avoid uncontrolled hydrolysis and subsequent precipitation. [ 42 ] The structure of that device was ITO/TiO 2 /F8BT/ MoO 3 /Au, where F8BT stands for poly(9,9-dioctylfl uorene-cobenzothiadiazole) ( Figure 2 ).…”

Section: Metal Oxide/polymer Interfacesmentioning

confidence: 99%

Hybrid Organic–Inorganic Light‐Emitting Diodes

2011

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The demonstration of colour tunability and high efficiency has brought organic light-emitting diodes (OLEDs) into the displays and lighting market. However, high production costs due to expensive deposition techniques and the use of reactive materials still limit their market entry, highlighting the need for novel concepts. This has driven the research towards the integration of both organic and inorganic materials into devices that benefit from their respective peculiar properties. The most representative example of this tendency is the application of metal oxides in organic optoelectronics. Metal oxides combine properties such as high transparency, good electrical conductivities, tuneable morphology, and the possibility of deposition on large areas with low-cost techniques. The use of metal oxides as charge injection interfaces in OLEDs has also been investigated. Hybrid organic-inorganic light-emitting diodes (HyLEDs) are inverted OLEDs that employ air-stable metal oxides as the charge injection contacts. They are emerging as a potential competitor to standard OLEDs, thanks to their intrinsic air stable electrodes and solution processability, which could result in low-cost, large area, light-emitting devices. This article reviews the short history of this class of devices from its first solid state example published in 2006 to the present achievements. The data presented shed light on the electronic mechanism behind the functioning of HyLEDs and give guidelines for their further optimization.

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Section: Metal Oxide/polymer Interfacesmentioning

confidence: 99%

Hybrid Organic–Inorganic Light‐Emitting Diodes

2011

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“…En esta técnica el catalizador se genera a partir de un precursor como el isopropóxido de titanio (Alam y Cameron 2002, Tasbihi et al 2007) o el cloruro de titanio (TiCl 3 ) (Djaoued et al 2002), tetraisopropóxido de titanio (Sheng et al 2008) o tetrabutóxido de titanio (TBT) (González-Burciaga 2013).…”

Section: Introductionunclassified

USO DE UN REACTOR DE PLACA PLANA (TiO2/VIDRIO) PARA LA DEGRADACIÓN DE 2,5-DICLOROFENOL POR FOTOCATÁLISIS SOLAR

Esquivel

Espinoza²,

Proal-Nájera

et al. 2017

Rev. Int. Contam. Ambie.

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Palabras clave: fotocatálisis heterogénea, método sol-gel, dinámica del reactor RESUMEN La degradación de compuestos orgánicos no biodegradables presentes en aguas residuales es un punto central de la fotocatálisis solar debido a su alta eficiencia y aceptables costos de operación. Se estudió la degradación de 2,5-diclorofenol (2,5-DCF) en solución acuosa con concentración inicial variable (C0 ≤ 98 mg/L), por fotólisis y fotocatálisis solar con un reactor de placa plana (1 m 2 ) y vidrio impregnado con TiO2 sintetizado por el método sol-gel. Se establecieron dos variables de respuesta, la demanda química de oxígeno y la concentración de 2,5-DCF determinada a 280 nm, por tres factores: ángulo de inclinación (20º y 26º), flujo (355 L/h y 407 L/h) y dos procesos (fotólisis y fotocatálisis). Lo anterior en condiciones de alta (ħʋprom = 847.4 W/m 2 ) y baja intensidad (ħʋprom = 453.6 W/m 2 ) de radiación solar, para lo cual se recirculó la solución acuosa sobre la placa de vidrio durante 60 min, bajo régimen laminar y con muestras cada 5 min. Se determinaron las constantes de velocidad K1 (min -1 ) y K2 (mol/L) -1 de orden primero y cero de reacción, respectivamente. Se consideraron elementos de la dinámica del reactor en la evaluación de la cinética química de reacciones fotocatalíticas. Se alcanzaron porcentajes de degradación de 2,5-DCF superiores al 98 % por fotocatálisis solar.Key words: heterogeneous photocatalysis, sol-gel method, reactor dynamics ABSTRACTThe interest in solar photocatalysis degradation of non-biodegradable organic compounds in wastewater has raised due to its high efficiency and acceptable operation costs. The degradation of an aqueous 2,5-Dichlorophenol (2,5-DCP) solution with variable initial concentration (C0 ≤ 98 mg/L) was performed by photolysis and solar photocatalysis, using a flat glass plate (1 m 2 ) impregnated with TiO2 synthetized by

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“…Recently nano-sized TiO2 materials have been attracting a growing interest in their unique catalytic actions, in particular, in photocatalytic reactions [2]. The nano-sized TiO2 materials are prepared by several methods such as solvothermal [3][4][5], precipitation [6], sol-gel [7][8][9], and thermal decomposition [10] methods.…”

Section: Introductionmentioning

confidence: 99%

Influence of Crystallite Size of TiO2 Supports on the Activity of Dispersed Pt Catalysts in Liquid-Phase Selective Hydrogenation of 3-Nitrostyrene, Nitrobenzene, and Styrene

et al. 2014

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Supported Pt catalysts were prepared using several kinds of TiO2 supports different in the crystallite size in the range of 10 -500 nm and their catalytic activity was tested for the liquid-phase hydrogenation of 3-nitrostyrene, nitrobenzene, and styrene. With Pt on smaller TiO2 crystallites (nanocrystals), the selectivity to vinylaniline was improved in the hydrogenation of 3-nitrostyrene (regioselective hydrogenation) and the selectivity to aniline was promoted in the hydrogenation of a mixture of nitrobenzene and styrene (chemoselective hydrogenation). The effects of TiO2 crystallite size were discussed on the basis of the results of turnover frequency and FTIR of CO adsorbed on dispersed Pt particles.Low coordinated and/or electron-rich Pt sites should be formed on the surface of nanocrystal TiO2 supports. Nanocrystal TiO2 support is an important factor for controlling and improving the catalytic performance of dispersed Pt particles.

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Untitled

Cited by 146 publications

References 24 publications

Hybrid Organic–Inorganic Light‐Emitting Diodes

Hybrid Organic–Inorganic Light‐Emitting Diodes

USO DE UN REACTOR DE PLACA PLANA (TiO2/VIDRIO) PARA LA DEGRADACIÓN DE 2,5-DICLOROFENOL POR FOTOCATÁLISIS SOLAR

Influence of Crystallite Size of TiO2 Supports on the Activity of Dispersed Pt Catalysts in Liquid-Phase Selective Hydrogenation of 3-Nitrostyrene, Nitrobenzene, and Styrene

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