Decomposition of aniline in aqueous solution by UV/TiO2 process with applying bias potential

Ku, Young; Chiu, Ping-Chin; Chou, Yi-Hsuan

doi:10.1016/j.jhazmat.2010.06.035

Cited by 32 publications

(16 citation statements)

References 14 publications

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“…IPA decomposition was increased by roughly 13% with applied bias potentials of 2.5 or 3 V for photoelectrocatalytic process. The enhancement could be attributed that the photogenerated electrons might be efficiently driven by the applied bias potential out of the photoanode to the external circuit to decrease recombination of electrons and holes (Ku et al, 2010a). Fig.…”

Section: Effect Of Applied Bias Potential On Gaseous Photoelectrocatamentioning

confidence: 99%

“…However, the rapid recombination between photogenerated electrons and holes seriously restricts the effectiveness of photocatalytic processes, resulting in low quantum yields for most photocatalytic reactions Ku et al, 2010a). Several modification methods for photocatalytic process were proposed to inhibit electron-hole recombination, including photocatalyst modification via doping with cations (Mn , etc.)…”

Section: Introductionmentioning

confidence: 99%

“…(Wang et al, 2009;Ku et al, 2010b, c;Xin et al, 2011), and process intensification via addition of sacrificial agent (methanol, ethanol, Na 2 S, ethylene diamine tetraacetic acid, etc.) (Galińska and Walendziewski, 2005;Ku et al, 2011a) or application of bias potential (Ku et al, 2006;Ku et al, 2010a;Shang et al, 2011). The bias-assisted photocatalytic process (also called photoelectrocatalytic process) is a promising technique to decrease electron-hole recombination and save energy (Shang et al, 2007;Ku et al, 2010a;.…”

Section: Introductionmentioning

confidence: 99%

“…(Galińska and Walendziewski, 2005;Ku et al, 2011a) or application of bias potential (Ku et al, 2006;Ku et al, 2010a;Shang et al, 2011). The bias-assisted photocatalytic process (also called photoelectrocatalytic process) is a promising technique to decrease electron-hole recombination and save energy (Shang et al, 2007;Ku et al, 2010a;. By applying bias potential to the photocatalyst, an external electrical field is occurred to drive the photogenerated electrons and holes in opposing directions and thus decreases the electron-hole recombination (Ku et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…By applying bias potential to the photocatalyst, an external electrical field is occurred to drive the photogenerated electrons and holes in opposing directions and thus decreases the electron-hole recombination (Ku et al, 2006). To enhance the photocatalytic decomposition, the energy consumption of applying bias potential was reported to be much more efficient comparing with applying higher light intensity (Ku et al, 2010a).…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Photocatalytic Decomposition of Gaseous Isopropyl Alcohol in a Polymer Electrolyte Cell

Hou

2013

Aerosol Air Qual. Res.

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Electrochemical enhancement of the photocatalytic decomposition of isopropyl alcohol in gas phase was carried out in a polymer electrolyte cell. An external electrical field was created in the gas-phase photocatalytic reaction due to the presence of solid electrolyte. The effects of bias potential, relative humidity, initial isopropyl alcohol concentration and UV light intensities were investigated for the photoelectrocatalytic process. Photoelectrocatalytic decomposition of isopropyl alcohol was observed to be less sensitive to humidity for experiments that applied a bias potential higher than 2.5 V. Electrical current densities of photoanode were highly correlated to the variations in bias potential, relative humidity level and UV light intensity, although independent of inlet isopropyl alcohol concentrations. Humidity had an ambiguous effect on the membrane conductivity of polymer electrolyte and photocatalytic decomposition rate of isopropyl alcohol with the application of bias potential. The experimental results also showed that the energy consumed in the photoelectrocatalytic process was much less than that needed by the photocatalytic process to achieve a similar level of isopropyl alcohol decomposition.

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Section: Effect Of Applied Bias Potential On Gaseous Photoelectrocatamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhanced Photocatalytic Decomposition of Gaseous Isopropyl Alcohol in a Polymer Electrolyte Cell

Hou

2013

Aerosol Air Qual. Res.

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A highly photoactive S, Cu‐codoped nano‐TiO₂ photocatalyst: Synthesis and characterization for enhanced photocatalytic degradation of neutral red

Yan

Yuan

et al. 2013

Env Prog and Sustain Energy

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Sulfur and copper codoped TiO2 (S, Cu‐TiO2) were prepared by sol‐gel process. And the samples were characterized by X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), UV‐vis diffuse reflectance spectroscopy (DRS), and N2 adsorption (BET method). The XRD results showed that the S, Cu‐codoped samples calcined below 550°C were pure anatase crystal structure which was in accordance with the FTIR spectra. “Red‐shift” in the UV‐vis spectrum of S, Cu‐codoped catalysts was observed, and SEM micrographs revealed that the codoped samples consisted of agglomerated nanoparticles with average particle size of 40–70 nm which was smaller than that of pure TiO2. The N2 adsorption measurements showed that the S, Cu‐codoped samples were mesoporous structures. The photocatalytic performance of the codoped samples was evaluated by monitoring the degradation of neutral red (NR) under UV and visible light illumination. The results showed that 0.2% S, Cu‐TiO2 calcined at 450°C had the highest photocatalytic activity among all samples. And the photocatalytic degradation rate of NR solution with a concentration of 20 mg L−1 could reach 98.4% under UV illumination in 120 min in the presence of 0.75 g L−1 catalyst and H2O2 with initial concentration of 0.2 mmol L−1. The kinetic study showed that this photocatalytic process coincided with the Langmuir‐Hinshelwood (L‐H) pseudo first order reaction model. The reusability study showed that 0.2% S, Cu‐TiO2 was highly stable up to third run. Therefore, the S, Cu‐codoped TiO2 is a promising candidate for degradation of NR containing wastewater. © 2013 American Institute of Chemical Engineers Environ Prog, 33: 419–429, 2014

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Photoelectrocatalytic decomposition of gaseous isopropanol in a polymer electrolyte photoreactor

Hou

2012

J Solid State Electrochem

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Decomposition of aniline in aqueous solution by UV/TiO2 process with applying bias potential

Cited by 32 publications

References 14 publications

Enhanced Photocatalytic Decomposition of Gaseous Isopropyl Alcohol in a Polymer Electrolyte Cell

Enhanced Photocatalytic Decomposition of Gaseous Isopropyl Alcohol in a Polymer Electrolyte Cell

A highly photoactive S, Cu‐codoped nano‐TiO₂ photocatalyst: Synthesis and characterization for enhanced photocatalytic degradation of neutral red

Photoelectrocatalytic decomposition of gaseous isopropanol in a polymer electrolyte photoreactor

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Decomposition of aniline in aqueous solution by UV/TiO2 process with applying bias potential

Cited by 32 publications

References 14 publications

Enhanced Photocatalytic Decomposition of Gaseous Isopropyl Alcohol in a Polymer Electrolyte Cell

Enhanced Photocatalytic Decomposition of Gaseous Isopropyl Alcohol in a Polymer Electrolyte Cell

A highly photoactive S, Cu‐codoped nano‐TiO2 photocatalyst: Synthesis and characterization for enhanced photocatalytic degradation of neutral red

Photoelectrocatalytic decomposition of gaseous isopropanol in a polymer electrolyte photoreactor

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A highly photoactive S, Cu‐codoped nano‐TiO₂ photocatalyst: Synthesis and characterization for enhanced photocatalytic degradation of neutral red