The role of electron transfer in photocatalysis: Fact and fictions

Mohamed, Hanan H.; Bahnemann, Detlef W.

doi:10.1016/j.apcatb.2012.05.045

Cited by 124 publications

(73 citation statements)

References 130 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The amount of O 2 plays a role in the contact angle of the surface. Studies on nitrides/oxynitrides have reported that O 2 photo-adsorption introduces highly polar and electronegative groups compared to N 2 changing the electro-negativity and electron density of nitrides [12]. Fig.…”

Section: Evaluation Of the Ag And Ta-contents In The Tan/ag And Taon/mentioning

confidence: 99%

“…The quantum size effect is applicable to particles with sizes 10 nm having about 10 4 atoms [3]. The quantum size nature of the semiconductors particles has been reported to introduce a marked perturbation in their band structure [3,12,26].…”

Section: Suggested Mechanism For the Photo-induced Ifct Processmentioning

confidence: 99%

“…The sputtering of oxides/nitrides allows the preparation of adhesive films, which are mechanically stable and superior to films prepared by deposition of colloid/powders, which can be readily wiped off using a cloth or thumb [12]. Our laboratory has recently reported oxy-nitrides films [13] and nitrides [14] films inactivating bacteria under visible light irradiation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Coupling of narrow and wide band-gap semiconductors on uniform films active in bacterial disinfection under low intensity visible light: Implications of the interfacial charge transfer (IFCT)

Rtimi

Sanjinés

Pulgarín

et al. 2013

Journal of Hazardous Materials

View full text Add to dashboard Cite

Section: Evaluation Of the Ag And Ta-contents In The Tan/ag And Taon/mentioning

confidence: 99%

Section: Suggested Mechanism For the Photo-induced Ifct Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Coupling of narrow and wide band-gap semiconductors on uniform films active in bacterial disinfection under low intensity visible light: Implications of the interfacial charge transfer (IFCT)

Rtimi

Sanjinés

Pulgarín

et al. 2013

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…Then, several reactions generated Á OH radicals, which decomposed the organic molecule to carbon dioxide and water. The other mechanism is the photosensitization; RhB absorb visible light irradiation, which leads to an electron transfer process from excited dye to the BiVO 4 conduction band to initiate redox reactions for the formation of the Á OH radicals [43]. Besides, IC dye was chosen inside the indigoid family for the purpose of evaluating its photocatalytic performance, as seen at Fig.…”

Section: Photocatalytic Experimentsmentioning

confidence: 99%

Photocatalytic properties of BiVO4 synthesized by microwave-assisted hydrothermal method under simulated sunlight irradiation

et al. 2015

View full text Add to dashboard Cite

BiVO 4 with monoclinic-type structure were successfully synthesized by microwave-assisted hydrothermal method (BiMH) and hydrothermal reaction (BiH500) in aqueous medium. The materials were characterized by X-ray diffraction, scanning electron microscopy, Barrett-Emmett-Teller technique, diffuse reflectance spectroscopy, and UV-Vis spectroscopy. The photocatalytic activity of samples was evaluated by the degradation of different pollutants such as xanthene (rhodamine B), indigoids (indigo carmine), and antibiotics (tetracycline) under simulated sun-light irradiation. The relation among surface area, morphology, particle size, charge recombination, and photocatalytic performance of the powders was also discussed. The degradation of the antibiotic solution (TC) over BiVO 4 photocatalyst was quickly reached for with half-life time (t 1/2 ) minor than 12 min. On the other hand, in the case of organic dyes (RhB and IC) the best results were t 1/2 = 79 and 150 min under simulated sun-light irradiation, respectively. BiVO 4 , had a good stability, did not present photocorroded under irradiation. The degree of mineralization of the organic compounds was determined by total organic content (TOC) analysis, which revealed that mineralization by the action of BiMH is feasible in 83 % (RhB), 58 % (IC), and 50 % (TC) after 96 h of irradiation.

show abstract

“…This method can narrow the band gap to stimulate the visible light catalytic response [2]. This phenomenon is due to that the light irradiation between metal nanoparticles and TiO 2 cause Fermi energy balance by the charge transfer [2,3].…”

Section: Introductionmentioning

confidence: 99%

Copper modified TiO₂catalysts: application to nitrobenzenes degradation

Chunyu

2016

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract. Copper doped TiO 2 by the method of sol-gel preparation was conducted to stimulate the TiO 2 visible light response and enhance the performance of photocatalytic degradation. By XRD, SEM and EDS analysis, molar ratio of 1.0%, 1.5%, 2.0% and 1.0% Cu doped TiO 2 presented smaller grain sizes (20-50 nm) than German P25 TiO 2 ( 50-100 nm). Especially, 1.5% Cu doped TiO 2 presented the highest and finest degree of crystallinity from XRD peak. Its reunion phenomenon was the weakest among all Cu doped TiO 2 . Combined with Cu doping structure, micro stress changes as well as the performance of the degradation of nitrobenzenes (NBs), the optimum mol ratio of Cu doped TiO 2 was 1.5%. With 1.5% Cu doped TiO 2 for 180 min UV light degradation of NBs, the removal efficiency was 60.02%, two times higher than that of Germany P25 TiO 2 . The reaction of NBs photocatalytic degradation by Cu x Ti (1-x) O 2 followed first order kinetics. Synthetically, SEM, ESD and performances of NBs degradation confirmed that the optimal formula of Cu x Ti (1-x) O 2 for degradation of NBs was Cu 0.0183 Ti 0.9817 O 2 .

show abstract

The role of electron transfer in photocatalysis: Fact and fictions

Cited by 124 publications

References 130 publications

Coupling of narrow and wide band-gap semiconductors on uniform films active in bacterial disinfection under low intensity visible light: Implications of the interfacial charge transfer (IFCT)

Coupling of narrow and wide band-gap semiconductors on uniform films active in bacterial disinfection under low intensity visible light: Implications of the interfacial charge transfer (IFCT)

Photocatalytic properties of BiVO4 synthesized by microwave-assisted hydrothermal method under simulated sunlight irradiation

Copper modified TiO₂catalysts: application to nitrobenzenes degradation

Contact Info

Product

Resources

About

The role of electron transfer in photocatalysis: Fact and fictions

Cited by 124 publications

References 130 publications

Coupling of narrow and wide band-gap semiconductors on uniform films active in bacterial disinfection under low intensity visible light: Implications of the interfacial charge transfer (IFCT)

Coupling of narrow and wide band-gap semiconductors on uniform films active in bacterial disinfection under low intensity visible light: Implications of the interfacial charge transfer (IFCT)

Photocatalytic properties of BiVO4 synthesized by microwave-assisted hydrothermal method under simulated sunlight irradiation

Copper modified TiO2catalysts: application to nitrobenzenes degradation

Contact Info

Product

Resources

About

Copper modified TiO₂catalysts: application to nitrobenzenes degradation