Efficient dechlorination of chlorinated solvent pollutants under UV irradiation by using the synthesized TiO2 nano-sheets in aqueous phase

Ndong, Landry Biyoghe Bi; Ibondou, Murielle Primaelle; Miao, Zhouwei; Gu, Xi; Qiu, Zhaofu; Sui, Qian; Mbadinga, Serge Maurice

doi:10.1016/s1001-0742(13)60541-0

Cited by 14 publications

(6 citation statements)

References 34 publications

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“…The phenomenon is attributable to the drawbacks inherent in the existing technologies, including the implementation challenge, the high operation and maintenance costs, and the carcinogenic effects [1][2][3]. Moreover, the long-term use of antibiotics could cause the bacteria to become antibiotic-resistant and render the drugs less effective in controlling the spread of diseases [4,5].…”

Section: Introductionmentioning

confidence: 99%

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

Rojviroon

Sirivithayapakorn

2018

International Journal of Photoenergy

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This experimental research comparatively investigates the Escherichia coli (E. coli) bacterial inactivation of the TiO 2 photocatalytic thin films fabricated by the sol-gel dip-coating (SG) and low-temperature spray-coating (SP) techniques, with low-intensity (12 μW·cm . Moreover, the essential physical characteristics of the SG-TiO 2 and SP-TiO 2 photocatalytic thin films were determined prior to the experimental bacterial inactivation. The findings showed that both photocatalytic thin films possessed the ideal physical characteristics, especially the SP-TiO 2 thin film. In addition, the viable cell counts, the cell morphology, and the bioluminescence-based adenosine triphosphate (ATP) indicated that both SG-TiO 2 and SP-TiO 2 thin films under UVA could effectively inhibit the proliferation of the E. coli cells in both NB and 0.85% NaCl.

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Section: Introductionmentioning

confidence: 99%

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

Rojviroon

Sirivithayapakorn

2018

International Journal of Photoenergy

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“…investigated the photocatalytic degradation of TCE by nanometer ZnO. Ndong et al . studied the photocatalytic performance of TiO 2 nanosheet on degradation of TCE.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, heterogeneous photocatalysis was widely concerned not only due to its low toxicity and high efficiency but also to the possibility that the contaminants might convert into innocuous or less harmful compounds by the reactive oxygen species generated on the surface of semiconductor under the irradiation of light . So far the photocatalytic degradation of TCE has been extensively studied . For example, Jung et al .…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of trichloroethylene over BiOCl under UV irradiation

Liu

Yang

Zhen

et al. 2018

Applied Organom Chemis

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In this study, BiOCl samples were synthesized under different pH values and characterized by XRD, SEM, UV-vis DRS, BET, photoelectrochemical measurement and PL. The photocatalytic performances of the as-prepared samples were evaluated through the decomposition of trichloroethylene (TCE) under UV irradiation. The influences of several parameters such as solution pH and common inorganic anions on TCE removal were investigated. Results indicated that BiOCl-0.6 exhibited better photocatalytic performance than BiOCl-6.0 because of its higher migration ability of photo-induced carrier. The photocatalytic degradation of TCE over BiOCl-0.6 followed pseudo first-order kinetics and appeared to be more efficient in acidic solution than in alkaline. TCE was almost completely dechlorinated in 120 minutes. The inhibiting effect of naturally occurring anions was in the order of HCO 3 ->SO 4 2->NO 3 -, while Clexhibited a dual effect. Moreover, BiOCl-0.6 exhibited superior reusability after three cycles of repetition tests.

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“…In recent decades, advanced photocatalyst semiconductors using physico-chemical processes have been applied with promising results for purification methods such as the removal of organic contaminants, deodorization, the disinfection of surfaces, and the removal of polluted air and water 2 3 5 6 7 8 9 . Studies on semiconductor materials that are abundant, stable, and efficient for photocatalytic reactions are still attracting interest worldwide because photocatalytic technology using solar energy has been considered to be a superior approach to solve both energy and environmental problems compared to other methods.…”

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confidence: 99%

“…Studies on semiconductor materials that are abundant, stable, and efficient for photocatalytic reactions are still attracting interest worldwide because photocatalytic technology using solar energy has been considered to be a superior approach to solve both energy and environmental problems compared to other methods. Among many other semiconductor nanomaterials, titanium dioxide (TiO 2 ) is well known for its photocatalytic properties and is considered to be the most suitable candidate, mainly due to its cheapness, worldwide availability, chemical stability, high photocorrosion stability, and environmental friendliness 9 10 . TiO 2 also has good properties in charge transport, photo-electronic generation, light scattering, and energy conversion.…”

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confidence: 99%

Solar-light photocatalytic disinfection using crystalline/amorphous low energy bandgap reduced TiO2

Kim

Hwang

Wang

et al. 2016

Sci Rep

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A generation of reactive oxygen species (ROS) from TiO2 under solar light has been long sought since the ROS can disinfect organic pollutants. We found that newly developed crystalline/amorphous reduced TiO2 (rTiO2) that has low energy bandgap can effectively generate ROS under solar light and successfully remove a bloom of algae. The preparation of rTiO2 is a one-pot and mass productive solution-process reduction using lithium-ethylene diamine (Li-EDA) at room temperature. Interestingly only the rutile phase of TiO2 crystal was reduced, while the anatase phase even in case of both anatase/rutile phased TiO2 was not reduced. Only reduced TiO2 materials can generate ROS under solar light, which was confirmed by electron spin resonance. Among the three different types of Li-EDA treated TiO2 (anatase, rutile and both phased TiO2), the both phased rTiO2 showed the best performance to produce ROS. The generated ROS effectively removed the common green algae Chlamydomonas. This is the first report on algae degradation under solar light, proving the feasibility of commercially available products for disinfection.

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Efficient dechlorination of chlorinated solvent pollutants under UV irradiation by using the synthesized TiO2 nano-sheets in aqueous phase

Cited by 14 publications

References 34 publications

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

Photocatalytic degradation of trichloroethylene over BiOCl under UV irradiation

Solar-light photocatalytic disinfection using crystalline/amorphous low energy bandgap reduced TiO2

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Efficient dechlorination of chlorinated solvent pollutants under UV irradiation by using the synthesized TiO2 nano-sheets in aqueous phase

Cited by 14 publications

References 34 publications

E. coli Bacteriostatic Action Using TiO2 Photocatalytic Reactions

E. coli Bacteriostatic Action Using TiO2 Photocatalytic Reactions

Photocatalytic degradation of trichloroethylene over BiOCl under UV irradiation

Solar-light photocatalytic disinfection using crystalline/amorphous low energy bandgap reduced TiO2

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Product

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E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions