Photoelectrochemical performance of multi-layered BiOx–TiO2/Ti electrodes for degradation of phenol and production of molecular hydrogen in water

Park, Hyunwoong; Bak, Ayoung; Ahn, Yong-Yoon; Choi, Jina; Hoffmannn, Michael R.

doi:10.1016/j.jhazmat.2011.05.009

Cited by 76 publications

(40 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…3b. On the other hand, as can be inferred from eqn (18) ] 0 . Therefore, an extended anaerobic treatment resulted in STE4 having a lower pollutants-to-chloride ratio than the other STEs ( Fig.…”

Section: Chlorine Transformation In the Wec With Model Septic Tank Efmentioning

confidence: 96%

See 1 more Smart Citation

Electrochemical treatment of human waste coupled with molecular hydrogen production

2014

View full text Add to dashboard Cite

We have developed a wastewater treatment system that incorporates an electrolysis cell for on-site wastewater treatment coupled with molecular hydrogen production for use in a hydrogen fuel cell.Herein, we report on the efficacy of a laboratory-scale wastewater electrolysis cell (WEC) using real human waste for the first time with semiconductor electrode utilizing a mixed particle coating of bismuth oxide doped titanium dioxide (BiO x /TiO 2 ). A comprehensive environmental analysis has been coupled together with a robust kinetic model under the chemical reaction limited regime to investigate the role of various redox reactions mediated by chloride present in human waste. The oxidative elimination of the chemical oxygen demand (COD) and ammonium ion can be modelled using empirical, pseudo-first-order rate constants and current efficiencies (CE). In combination with an anaerobic pre-treatment step, human waste containing high-levels of COD, protein, and color are eliminated within 6 hours of batch treatment in the WEC. The reactor effluent has a residual inorganic total nitrogen (TN) concentration of $40 mM. The CE and specific energy consumption were 8.5% and 200 kWh per kgCOD for the COD removal, 11% and 260 for kWh per kgTN for the TN conversion. The CE and energy efficiencies (EE) for hydrogen production were calculated to be 90% and 25%, respectively.

show abstract

Section: Chlorine Transformation In the Wec With Model Septic Tank Efmentioning

confidence: 96%

“…27 Based on the promising characteristics of this earth abundant metal oxide, our previous reports 7,15,16,18,19 have demonstrated the feasibility of Bi-doped TiO 2 (BiO x /TiO 2 ) electrodes for use in the WEC.…”

Section: 22mentioning

confidence: 99%

Electrochemical treatment of human waste coupled with molecular hydrogen production

2014

View full text Add to dashboard Cite

show abstract

“…The major difference between these materials reported lies in the light source used for the electrode activation and electrolyte composition. BiO x -TiO 2 /Ti has been irradiated by UV light [231] only, while TiO 2 NT photoactivation has been performed by UV and TiO 2 -modified electrode is activated by visible light contributions [14]. All the reported results have shown that the photoelectrochemical method could be used efficiently in hydrogen generation.…”

Section: Hydrogen Generation By Photoelectrocatalysismentioning

confidence: 96%

“…Taking into account the process reported in the literature regarding hydrogen production [228][229][230], the use of photoelectrochemical methods [231] has been described as a promising alternative for hydrogen production mainly because of the possibility of converting solar light into electricity and minimizing electron/hole recombination usually in the photocatalytic process.…”

Section: Hydrogen Generation By Photoelectrocatalysismentioning

confidence: 99%

“…Moreover, C-TiO 2 is formed by a mixture of rutile and anatase phases that decreases e − /h + recombination and improves charge transfer. However, only TiO 2 nanotubes [14] and BiO x -TiO 2 /Ti [231] photoactive materials have been described for the simultaneous organic compound degradation and hydrogen generation. The energy-time normalized H 2 collection is another interesting aspect that Paulose and coworkers reported [233], expressing the direct influence of light power consumption on gas production.…”

Section: Hydrogen Generation By Photoelectrocatalysismentioning

confidence: 99%

See 1 more Smart Citation

Achievements and Trends in Photoelectrocatalysis: from Environmental to Energy Applications

et al. 2015

View full text Add to dashboard Cite

The great versatility of semiconductor materials and the possibility of generation of electrons, holes, hydroxyl radicals, and/or superoxide radicals have increased the applicability of photoelectrocatalysis dramatically in the contemporary world. Photoelectrocatalysis takes advantage of the heterogeneous photocatalytic process by applying a biased potential on a photoelectrode in which the catalyst is supported. This configuration allows more effectiveness of the separation of photogenerated charges due to light irradiation with energy being higher compared to that of the band gap energy of the semiconductor, which thereby leads to an increase in the lifetime of the electron-hole pairs. This work presents a compiled and critical review of photoelectrocatalysis, trends and future prospects of the technique applied in environmental protection studies, hydrogen generation, and water disinfection. Special attention will be focused on the applications of TiO 2 and the production of nanometric morphologies with a great improvement in the photocatalyst properties useful for the degradation of organic pollutants, the reduction of inorganic contaminants, the conversion of CO 2 , microorganism inactivation, and water splitting for hydrogen generation.

show abstract

Interfacial Charge Transfers of Surface‐Modified TiO₂Nanoparticles in Photocatalytic Water Treatment

Park¹

2016

Engineered Nanoparticles and the Environment: Biophysicochemical Processes and Toxicity

View full text Add to dashboard Cite

Photoelectrochemical performance of multi-layered BiOx–TiO2/Ti electrodes for degradation of phenol and production of molecular hydrogen in water

Cited by 76 publications

References 45 publications

Electrochemical treatment of human waste coupled with molecular hydrogen production

Electrochemical treatment of human waste coupled with molecular hydrogen production

Achievements and Trends in Photoelectrocatalysis: from Environmental to Energy Applications

Interfacial Charge Transfers of Surface‐Modified TiO₂Nanoparticles in Photocatalytic Water Treatment

Contact Info

Product

Resources

About

Photoelectrochemical performance of multi-layered BiOx–TiO2/Ti electrodes for degradation of phenol and production of molecular hydrogen in water

Cited by 76 publications

References 45 publications

Electrochemical treatment of human waste coupled with molecular hydrogen production

Electrochemical treatment of human waste coupled with molecular hydrogen production

Achievements and Trends in Photoelectrocatalysis: from Environmental to Energy Applications

Interfacial Charge Transfers of Surface‐Modified TiO2Nanoparticles in Photocatalytic Water Treatment

Contact Info

Product

Resources

About

Interfacial Charge Transfers of Surface‐Modified TiO₂Nanoparticles in Photocatalytic Water Treatment