Carbon Doping of TiO<sub>2</sub>for Visible Light Photo Catalysis - A review

Palanivelu, K.; Im, Jisun; Lee, Young-Seak

doi:10.5714/cl.2007.8.3.214

Cited by 81 publications

(54 citation statements)

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“…The best results were obtained for TiO 2 -C film with an optimal carbon content. According to Palanivelu et al [41] addition of C-impurity gives the semiconductor TiO 2 an excess of conducting electrons or an excess of conducting holes and the carbon doped titania contained less than 1 wt% of carbon. The influence of the carbon content in the photocatalysts on the photocatalytic activity of cement plates can be clearly observed, by comparing the TiO 2 /N,C-100 and TiO 2 /N,C-300 samples (Table 1).…”

Section: Photocatalyst Characteristicsmentioning

confidence: 99%

Induced self-cleaning properties towards Reactive Red 198 of the cement materials loaded with co-modified TiO2/N,C photocatalysts

Janus

Bubacz

Zatorska

et al. 2014

Reac Kinet Mech Cat

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The possibility of promoting the self-cleaning properties of the cement materials was verified by implementing the obtained nitrogen and carbon comodified titania-based (TiO 2 /N,C) photocatalysts into the cement plates. Additionally, unmodified TiO 2 (Grupa Azoty Zakłady Chemiczne POLICE S.A., Poland) and a commercial photocatalyst P25 (Evonik Industries AG, Germany) were used as reference materials. The impact of treatment temperature on the physicochemical properties of the obtained TiO 2 /N,C additives was discussed. The photocatalytic activity of the prepared cement plates was evaluated trough the degradation of a model organic compound (Reactive Red 198) under UV-vis light. It was found that cement plates containing TiO 2 /N,C photocatalyst calcined at 600°C temperature exhibited the highest photocatalytic activity. The role of several factors such as crystallinity, phase composition and non-metals presence in the TiO 2 /N,C additives on the self-clearing properties of the cement samples was also included in the discussion.

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Section: Photocatalyst Characteristicsmentioning

confidence: 99%

Induced self-cleaning properties towards Reactive Red 198 of the cement materials loaded with co-modified TiO2/N,C photocatalysts

Janus

Bubacz

Zatorska

et al. 2014

Reac Kinet Mech Cat

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“…(19) Moreover, it has been reported that the number of defect sites are increased in glasses and crystal systems. (20,21) We assume that traps are an important factor of radiation-induced luminescence, especially in storage luminescence (TSL and OSL). Therefore, we believe that further investigation of such correlations between radiation-induced luminescence properties and the glass structure should be helpful in designing novel optical materials, scintillators, and dosimeters.…”

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confidence: 99%

Correlations between Glass Structure and Emission Properties of Sn-Doped Zinc Phosphate Glasses Prepared with Different Cooling Rates

Torimoto

Masai

Okada

et al. 2017

Sensors and Materials

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Photoluminescence (PL) and radiation-induced luminescence properties of Sn-doped zinc phosphate (SZP) glasses prepared with different cooling rates are investigated and associated with their glass structures. Although the shape of the PL spectrum is independent of the cooling rate, the emission intensity effectively changes with the cooling rate. The radial distribution functions of Sn in the SZP glasses prepared with different cooling rates coincide with each other. Electron spin resonance (ESR) measurement supports the fact that the trap density of slowly cooled glasses is higher than that of rapidly cooled glasses, and this fact is also suggested by the radiation-induced luminescence properties. Therefore, it is expected that these traps will work as storage sites associated with the radiation-induced luminescence.

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“…29 The presence of carbon defects can also lead to visible light absorption. 13 Carbon doping has been reported in TiO 2 nanotubes that have been anodically formed in ethylene glycol solutions.…”

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“…12 Studies on carbon doped TiO 2 have reported superior photocatalytic responses compared to undoped TiO 2 for UV and visible light due to interband impurities, as well as an increase in charge carrier transport. [12][13][14][15][16] The efficacy of pathogen disinfection devices can also be improved through the application of an anodic bias to the TNA, which inhibits charge carrier recombination. Nie et al 4 reported a 7-log reduction for E. Coli K-12 under a 1 V anodic bias, whereas only a 0.5-log reduction was observed under solar illumination alone.…”

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confidence: 99%

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An Effective, Point-of-Use Water Disinfection Device Using Immobilized Black TiO₂Nanotubes as an Electrocatalyst

Carlson

Elliott

Walker

et al. 2016

J. Electrochem. Soc.

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The following study characterized titanium dioxide nanotube arrays (TNAs) annealed in air (air-TNA), nitrogen (N2-TNA) or hydrogen with a nitrogen balance (H2-TNA) for the rapid disinfection of waterborne bacteria. The H2-TNA became black after annealing due to a large concentration of oxygen vacancies, leading to a higher absorbance in the visible light region compared to the air-TNA and N2-TNA. Photoelectrochemical testing showed that the N2-TNA had the highest photocurrent response in the absence of an applied bias; however, under the application of a 6 V anodic bias, the photocurrent response of all the samples was dampened and the dark current of the H2-TNA was ≥50% higher than N2-TNA and air-TNA. The higher defect density in the H2-TNA compared to the other anodes led to the formation of more oxidizing radical species using only an applied bias. Complete inactivation of total coliform and E. Coli from natural creek water was obtained using a 50 ml/min flow reactor containing the H2-TNA after 25 s and under a +6 V potential in the absence of solar illumination.

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Carbon Doping of TiO₂for Visible Light Photo Catalysis - A review

Cited by 81 publications

References 0 publications

Induced self-cleaning properties towards Reactive Red 198 of the cement materials loaded with co-modified TiO2/N,C photocatalysts

Induced self-cleaning properties towards Reactive Red 198 of the cement materials loaded with co-modified TiO2/N,C photocatalysts

Correlations between Glass Structure and Emission Properties of Sn-Doped Zinc Phosphate Glasses Prepared with Different Cooling Rates

An Effective, Point-of-Use Water Disinfection Device Using Immobilized Black TiO₂Nanotubes as an Electrocatalyst

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Carbon Doping of TiO2for Visible Light Photo Catalysis - A review

Cited by 81 publications

References 0 publications

Induced self-cleaning properties towards Reactive Red 198 of the cement materials loaded with co-modified TiO2/N,C photocatalysts

Induced self-cleaning properties towards Reactive Red 198 of the cement materials loaded with co-modified TiO2/N,C photocatalysts

Correlations between Glass Structure and Emission Properties of Sn-Doped Zinc Phosphate Glasses Prepared with Different Cooling Rates

An Effective, Point-of-Use Water Disinfection Device Using Immobilized Black TiO2Nanotubes as an Electrocatalyst

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Product

Resources

About

Carbon Doping of TiO₂for Visible Light Photo Catalysis - A review

An Effective, Point-of-Use Water Disinfection Device Using Immobilized Black TiO₂Nanotubes as an Electrocatalyst