TiO2 activation by using activated carbon as a support

Araña, J.; Doña-Rodrı́guez, J.M.; Rendón, E. Tello; Cabo, C. Garriga i; Díaz, O. González; Melián, J.A. Herrera; Pérez‐Peña, J.; Colón, G.; Navı́o, J.A.

doi:10.1016/s0926-3373(03)00075-4

Cited by 133 publications

(55 citation statements)

References 10 publications

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“…To improve the performance of purification process, an adsorbent with high pollutant adsorption capability, such as the activated carbon (AC), has been added to the reactor with TiO 2 as the suspended mixture [1][2][3][4][5][6][7] mounted with TiO 2 or as a support for TiO 2 [8][9][10][11][12][13][14][15]. The enhancement is attributed to the so-called synergistic effect because the adsorbent may adsorb a large amount of pollutant and then the pollutant will further transfer to TiO 2 surface where the photodegradation of pollutant takes place.…”

Section: Introductionmentioning

confidence: 99%

Promoting effect of adding carbon black to TiO2 for aqueous photocatalytic degradation of methyl orange

Mao

Weng

2009

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Promoting effect of adding carbon black to TiO2 for aqueous photocatalytic degradation of methyl orange

Mao

Weng

2009

Chemical Engineering Journal

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“…20 nm in the absorption sharp edge was detected as the samples are prepared by physical mixture; it is unlikely (but may not be discarded) to have an optimized interface between both phases of this catalyst that would favor the absorption of low energy photons. However, the profiles of the WO3/carbon catalysts showed a marked increase in the absorbance in the region between 500 and 800 nm, regardless the nature of the carbon, a characteristic feature associated with the strong light absorption of black opaque materials (Araña et al, 2003;Carmona et al, 2015). The trend for the absorption above 500 nm followed the order: CNT > HC > CL.…”

Section: Resultsmentioning

confidence: 96%

Carbon Materials as Additives to WO3 for an Enhanced Conversion of Simulated Solar Light

et al. 2016

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We have explored the impact of the incorporation of nanoporous carbons as additives to tungsten oxide on the photocatalytic degradation of two recalcitrant pollutants: rhodamine B (RhB) and phenol, under simulated solar light. For this purpose, WO3/ carbon mixtures were prepared using three carbon materials with different properties (in terms of porosity, structural order and surface chemistry). Despite the low carbon content used (2 wt.%), a significant increase in the photocatalytic performance of the semiconductor was observed for all the catalysts. Moreover, the influence of the carbon additive on the performance of the photocatalysts was found to be very different for the two pollutants. Carbon additives of hydrophobic nature increased the photodegradation yield of phenol compared to bare WO3, likely due to the higher affinity and stronger interactions of phenol molecules toward basic nanoporous carbons. Oppositely, the use of acidic carbon additives led to higher RhB conversions due to increased acidity of the WO3/carbon mixtures and the stronger affinity of the pollutant for acidic catalyst's surfaces. As a result, the photooxidation of RhB is favored by means of a coupled (photosensitized and photocatalytic) degradation mechanism. All these results highlight the importance of favoring the interactions of the pollutant with the catalyst's surface through a detailed design of the features of the photocatalyst.

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“…This all leads to an improved photocatalytic performance. It has been established that the amount of activated carbon that maximises these benefits lies between 7% and 13% [9].…”

Section: Introductionmentioning

confidence: 99%

Degradation and Detoxification of Banana Postharvest Treatment Water Using Advanced Oxidation Techniques

Santiago¹,

Melián²,

Rodríguez³

et al. 2011

GSC

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The elimination and detoxification of water contaminated with the principal commercial fungicides-thiabendazole (Textar 60 T) and imazalil sulphate (Fruitgard IS 7.5)-used in the postharvest treatment of bananas was successfully achieved through the use of advanced oxidation processes (AOPs). The techniques tested were heterogeneous photocatalysis with TiO 2 and TiO 2 -activated carbon (TiO 2 -CA) and Fenton and photo-Fenton processes. The evolution of fungicide concentration during degradation was studied together with mineralization and toxicity levels. When treated with any of the methods under study, the water meets the conditions stipulated by the legislation currently in force for its reuse in irrigation. However, this study proposes that the Fenton process is the best option for treatment of this type of water due to the efficiency of its reactions and its low economic cost.

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TiO2 activation by using activated carbon as a support

Cited by 133 publications

References 10 publications

Promoting effect of adding carbon black to TiO2 for aqueous photocatalytic degradation of methyl orange

Promoting effect of adding carbon black to TiO2 for aqueous photocatalytic degradation of methyl orange

Carbon Materials as Additives to WO3 for an Enhanced Conversion of Simulated Solar Light

Degradation and Detoxification of Banana Postharvest Treatment Water Using Advanced Oxidation Techniques

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