Application of TiO2-containing mesoporous spherical activated carbon in a fluidized bed photoreactor—Adsorption and photocatalytic activity

Baek, Mi-Hwa; Yoon, Jiwon; Hong, Ji-Sook; Suh, Jeong-Kwon

doi:10.1016/j.apcata.2012.10.018

Cited by 64 publications

(24 citation statements)

References 47 publications

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“…i o s y s t e m s e n g i n e e r i n g 1 3 2 ( 2 0 1 5 ) 6 1 e7 0 Yoon, Hong, & Suh, 2013). In this case, it is possible to confirm the general behaviour of the composite materials reported by Baek et al Moreover, a few works in the literature have reported that TiO 2 /SiO 2 nanocomposites resulted to be more efficient than TiO 2 alone (Anderson & Bard, 1995;Ding, Lu, & Greenfield, 2000;Xu, Zheng, & Liu, 1999).…”

Section: Resultssupporting

confidence: 85%

Photocatalytic degradation of ethylene on mesoporous TiO2/SiO2 nanocomposites: Effects on the ripening of mature green tomatoes

Chiara

Pal

Licciulli

et al. 2015

Biosystems Engineering

107

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Section: Resultssupporting

confidence: 85%

Photocatalytic degradation of ethylene on mesoporous TiO2/SiO2 nanocomposites: Effects on the ripening of mature green tomatoes

Chiara

Pal

Licciulli

et al. 2015

Biosystems Engineering

107

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“…The reuse of a material used for decontamination is important in practical applications such as wastewater treatment. 52 We thus performed another experiment in which the TBC-2 sample was used for six recycles of ST removal. An initial ST concentration of 500 mg L -1 , pH of 8.0, and 120 min irradiation time was used for this experiment.…”

Section: Reuse Of the Composite For St Removalmentioning

confidence: 99%

Titanium dioxide‐coated biochar composites as adsorptive and photocatalytic degradation materials for the removal of aqueous organic pollutants

Cai

Jiang

Liu

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND This article reports the synthesis and characterisation of titanium dioxide‐coated biochar composites (TBCs) by pyrolysing titanium dioxide‐treated biomass prepared by a modified sol–gel method. Their adsorptive and photocatalytic activities were evaluated based on the removal of safranine T (ST) from an aqueous solution with/without UV‐light irradiation. RESULTS Characterisation studies suggested that TiO2 was successfully loaded on the biochar substrate. The biochar and TiO2 contents of the composite significantly affected its performance. The ST removal capabilities of the TBCs with 1, 1.5, 2, and 2.5 g of the biomass are 1.7, 2.3, 7.2, and 2.3 times better than that of the raw biochar, respectively. Thus, the optimum amount of biomass in TBC‐x was determined to be 2 g, with the corresponding sample exhibiting excellent stability, effectiveness over a wide pH range, and a maximum ST removal capacity of 226.7 mg g‐1. CONCLUSION The loading of TiO2 significantly enhanced the adsorption performance of biochar and the high specific surface area of the biochar synergistically promoted the photocatalytic activity of TiO2. Both adsorption and photocatalytic degradation were confirmed to contribute to the decolourisation of the aqueous solution because of the removal of ST, with the effect of adsorption being slightly higher than that of photocatalysis. The synthesised composite is a promising alternative material for removing chemical contaminants. © 2017 Society of Chemical Industry

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“…The photocatalytic mechanism of TiO 2 has been discussed generally in the literature [24][25][26][27][28]. When a TiO 2 photocatalyst is exposed to UV irradiation, with light energy greater than its band gap energy (3.2 eV), an electron and hole can be generated in the conduction and valence bands, respectively.…”

Section: Characterizationmentioning

confidence: 99%

Photocatalytic decolorization of reactive red 198 dye by a TiO2–activated carbon nano-composite derived from the sol–gel method

2015

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In this research, a TiO 2 -activated carbon nano-composite was prepared by a sol-gel method and characterized by XRD, FE-SEM, EDS, FTIR, BET surface area, photoluminescence spectroscopy and UV-Vis diffuse reflectance spectroscopy. The photocatalytic activity of the nano-composite was evaluated through degradation of reactive red 198 (RR 198) under UV light, and was compared to unsupported TiO 2 . The XRD result indicated that the TiO 2 nano-composite contained only anatase phase. The surface area of the TiO 2 increased from 48 to 100 m 2 /g through the fabrication of the nano-composite. The photocatalytic results indicated that the RR 198 was decolorized around 42 and 38 % during a 210-min irradiation period in the presence of nano-composite and TiO 2 , respectively. It means that nano-composite enhanced the photocatalytic activity of the TiO 2 nanoparticles. After 20 h of irradiation in the presence of the nano-composite, 97 % of RR 198 had degraded.

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Application of TiO2-containing mesoporous spherical activated carbon in a fluidized bed photoreactor—Adsorption and photocatalytic activity

Cited by 64 publications

References 47 publications

Photocatalytic degradation of ethylene on mesoporous TiO2/SiO2 nanocomposites: Effects on the ripening of mature green tomatoes

Photocatalytic degradation of ethylene on mesoporous TiO2/SiO2 nanocomposites: Effects on the ripening of mature green tomatoes

Titanium dioxide‐coated biochar composites as adsorptive and photocatalytic degradation materials for the removal of aqueous organic pollutants

Photocatalytic decolorization of reactive red 198 dye by a TiO2–activated carbon nano-composite derived from the sol–gel method

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