Decomposition of dye pigment via photocatalysis process using CuO-TiO2 nanocomposite

Mingmongkol, Yumatorn; Trinh, Dang Trung Tri; Channei, Duangdao; Khanitchaidecha, Wilawan; Nakaruk, Auppatham

doi:10.1016/j.matpr.2021.03.330

Cited by 9 publications

(4 citation statements)

References 22 publications

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“…The TiO 2 sol-gel was positioned in front of the blade, which was then moved across the surface of the substrate to create a wet film. The TiO 2 wet film-coated substrates were exposed to UV-C radiation (TUV 36W, Philips) at room temperature for a duration of 3 h. More detailed information regarding the coating method can be found in previous work [15]. To confirm the presence of TiO 2 and assess its properties, the TiO 2 thin film-coated substrates, including PVC, PS, PET, and PVDC, underwent characterisation.…”

Section: Tio 2 Sol-gel Preparation and Substrates Coatingmentioning

confidence: 99%

“…Photocatalysts generate strong reactive oxygen species (h + , OH • , O 2− , H 2 O 2 ) that partially decompose the outer membrane of bacteria. TiO 2 , in particular, is extensively used as a photocatalyst in wastewater treatment, disinfection, and self-cleaning surfaces [14,15]. Its widespread application is attributed to its chemical stability, abundance, cost-effectiveness, biocompatibility, and non-toxic nature to human health [16].…”

Section: Introductionmentioning

confidence: 99%

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Antibacterial properties of TiO₂ nano coating on food packaging surfaces against Escherichia coli and Salmonella typhimurium

Phuinthiang

Channei

Ratananikom

et al. 2023

Surface Engineering

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This work aimed to enhance the surface properties of common food packaging materials (PVC, PS, PET, PVDC) by applying a TiO 2 nano thin film coating. Physical and chemical analyses confirmed a well-defined anatase phase film. PET showed the highest antibacterial activity, followed by PVDC, PS, and PVC. After 60 min of UV-A irradiation, E. coli elimination rates were 99.85% (PET), 97.14% (PVDC), 96.5% (PS), and 85.91% (PVC). Similarly, for S. Typhimurium, the respective rates were 97.8% (PET), 83.71% (PVDC), 74.79% (PS), and 68.94% (PVC). Complete eradication of both strains occurred within 120 min (E. coli) and 180 min (S. Typhimurium). Durability testing revealed PET's mass loss of 97 mg/kg after 15 cycles, while PVC had the lowest value of 7 mg/kg. These findings demonstrate that TiO 2 thin film-coated substrates effectively inhibit bacteria growth, extending food product shelf life.

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Section: Tio 2 Sol-gel Preparation and Substrates Coatingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Antibacterial properties of TiO₂ nano coating on food packaging surfaces against Escherichia coli and Salmonella typhimurium

Phuinthiang

Channei

Ratananikom

et al. 2023

Surface Engineering

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“…Besides, as the number of reuses increases, the mass of Cu/TiO 2 @Glass continues to increase, because copper ions in the solution are continuously reduced and deposited on the surface of photocatalyst lm. The deposited Cu species could be work as cocatalyst to enhance the photocatalytic performance (Mingmongkol et al 2021).…”

Section: Treatment Of Wastewater By Photocatalyst Lmmentioning

confidence: 99%

Photocatalytic Treatment of Different Types of High−Concentration Ammonia Wastewater by Cu/TiO2 Film and its Mechanism Study

Feng¹,

Zhang²,

Zhang³

et al. 2021

Preprint

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Photocatalytic oxidation of ammonia in wastewater has been abundantly investigated in lab − scale, but there are still many issues to be solved towards practical application. Herein, we have immobilized Cu/TiO2 photocatalyst on different solid substrates in order to practically utilize and recycle the photocatalyst during wastewater treatment, on the basis of exploring the effects of different influencing factors such as pH, temperature and salinity on the photocatalytic oxidation of ammonia in this work. The performance of Cu/TiO2 films was evaluated by circulated treatment of different types of wastewater including high salinity ammonia wastewater, copper − ammonia wastewater and liquid − ammonia mercerization wastewater. The characters of wastewater matrices significantly influence the performance for ammonia oxidation. Different from the slurry test of photocatalyst power that operated in a closed reactor, it is importantly found that oxygen in air plays significant role in photocatalytic oxidation of ammonia into dinitrogen in the aerobic oxidation process, when the Cu/TiO2 films were employed. The possible oxidation mechanism has been proposed to elucidate the ammonia oxidation process.

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“…There have been many attempts made to improve the photocatalytic activity of TiO 2 by changing the size of the particles, modifying the band gap energy, postponing the recombination of electrons and holes, combining it with adsorbents (e.g., activated carbon [20]), etc. As a method to improve its activity, the mixing of TiO 2 with other metal oxides, such as CuO, V 2 O 5 , ZrO 2 , Co 3 O 4 , Fe 2 O 3 , ZnO, MnO 2 and WO 3 , has been undertaken [21][22][23][24][25][26][27][28][29][30]. These inorganic materials are reuseable and highly sustainable.…”

Section: Introductionmentioning

confidence: 99%

Mixed Metal Oxide W-TiO2 Nanopowder for Environmental Process: Synergy of Adsorption and Photocatalysis

Cheng,

Heng,

Tieng

et al. 2024

Nanomaterials

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A mixed metal oxide W-TiO2 nanopowder photocatalyst was prepared by using the sol–gel method with a broad range of elemental compositions x = CW/(CW + CTi), including TiO2 and WO3. The material was structurally characterized and evaluated in adsorption and photocatalytic processes by testing its removal capacity of a representative pollutant methylene blue (MB) in aqueous solutions and under UV-A and sunlight illuminations. The nanopowders appeared to be more effective adsorbents than pure TiO2 and WO3 materials, showing a maximum at 15 mol% W, which was set as the tungsten solubility limit in anatase titania. At the same time, the photocatalytic decomposition of MB peaked at 2 mol% W. The examination of different compositions showed that the most effective MB removal took place at 15 mol% W, which was attributed to the combined action of adsorption and heterogeneous photocatalysis. Moreover, MB decomposition under sunlight was stronger than under UV-A, suggesting photocatalyst activation by visible light. The pollutant removal efficiency of the material with 15 mol% W was enhanced by a factor of ~10 compared to pure TiO2 at the beginning of the process, which shows its high potential for use in depollution processes in emergency cases of a great pollutant leak. As a result, a Wx=0.15-TiO2 catalyst could be of high interest for wastewater purification in industrial plants.

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Decomposition of dye pigment via photocatalysis process using CuO-TiO2 nanocomposite

Cited by 9 publications

References 22 publications

Antibacterial properties of TiO₂ nano coating on food packaging surfaces against Escherichia coli and Salmonella typhimurium

Antibacterial properties of TiO₂ nano coating on food packaging surfaces against Escherichia coli and Salmonella typhimurium

Photocatalytic Treatment of Different Types of High−Concentration Ammonia Wastewater by Cu/TiO2 Film and its Mechanism Study

Mixed Metal Oxide W-TiO2 Nanopowder for Environmental Process: Synergy of Adsorption and Photocatalysis

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Decomposition of dye pigment via photocatalysis process using CuO-TiO2 nanocomposite

Cited by 9 publications

References 22 publications

Antibacterial properties of TiO2 nano coating on food packaging surfaces against Escherichia coli and Salmonella typhimurium

Antibacterial properties of TiO2 nano coating on food packaging surfaces against Escherichia coli and Salmonella typhimurium

Photocatalytic Treatment of Different Types of High−Concentration Ammonia Wastewater by Cu/TiO2 Film and its Mechanism Study

Mixed Metal Oxide W-TiO2 Nanopowder for Environmental Process: Synergy of Adsorption and Photocatalysis

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Antibacterial properties of TiO₂ nano coating on food packaging surfaces against Escherichia coli and Salmonella typhimurium

Antibacterial properties of TiO₂ nano coating on food packaging surfaces against Escherichia coli and Salmonella typhimurium