Photocatalytic removal of 2,4-dichlorophenoxyacetic acid herbicide on copper oxide/titanium dioxide prepared by co-precipitation method

Lee, Shu Chin; Hasan, N. M.; Lintang, Hendrik Oktendy; Shamsuddin, Mustaffa; Yuliati, Leny

doi:10.1088/1757-899x/107/1/012012

Cited by 12 publications

(5 citation statements)

References 13 publications

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“…Among different potential transition metals, copper and molybdenum have received increasing attention due to some advantages such as low toxicity, low cost, and availability [16,17]. In addition, it has been reported that Cu-and Mo-based photocatalysts have a high photocatalytic activity in the degradation of different types of organic pollutants under UV-visible light [18][19][20][21][22][23][24][25]. However, scarce information can be found about two important limitations of Cu-and Mo-based photocatalysts: their low surface area and lixiviation issues during the photocatalytic reaction.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Performance of Carbon-Containing CuMo-Based Catalysts under Sunlight Illumination

et al. 2022

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Carbon-doped nanostructured CuMo-based photocatalysts were prepared by solvothermal synthesis. Two thermal treatments—oxidative and inert atmosphere—were used for the synthesis of the catalysts, and the influence of spherical carbon structures upon the crystalline phases on the photocatalytic activity and stability was studied. XRD showed the catalysts are nanostructured and composed by a mixture of copper (Cu, Cu2O, and CuO) and molybdenum (MoO2 and MoO3) crystalline phases. The catalysts were used for the degradation of yellow 5 under solar light. A remarkable leaching of Mo both in dark and under solar irradiation was observed and quantified. This phenomenon was responsible for the loss of photocatalytic activity for the degradation of the dye on the Mo-containing series. Conversely, the Cu-based photocatalysts were stable, with no leaching observed after 6 h irradiation and with a higher conversion of yellow 5 compared with the Mo- and CuMo series. The stability of Cu-based catalysts was attributed to a protective effect of spherical carbon structures formed during the solvothermal synthesis. Regarding the catalysts’ composition, sample Cu4-800-N2 prepared by pyrolysis exhibited up to 4.4 times higher photoactivity than that of the pristine material, which is attributed to a combined effect of an enhanced surface area and micropore volume generated during the pyrolytic treatment due to the presence of the carbon component in the catalyst. Scavenger tests have revealed that the mechanism for tartrazine degradation on irradiated Cu-based catalysts involves successive attacks of •OH radicals.

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Section: Introductionmentioning

confidence: 99%

Photocatalytic Performance of Carbon-Containing CuMo-Based Catalysts under Sunlight Illumination

et al. 2022

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“…The results are summarized in Table 1. Photocatalytic oxidation of 2, 4-D in the laboratory is well studied in the literature [36,75]. During degradation of 2,4-D, hydroxylation of the ring occurs followed by transformation of the aliphatic chain, as illustrated below [29]:…”

Section: Killex ®mentioning

confidence: 99%

Passive Solar Photocatalytic Treatment of Emerging Contaminants in Water: A Field Study

2019

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Global economic shifts towards utilization of solar energy provides opportunities for photocatalytic technologies that can harness this abundant source of energy for treatment of organic contaminants. The majority of studies in this area have been performed under artificial light, whereas in this paper, the efficacy of passive photocatalysis was studied under sunlight. Buoyant titanium dioxide (TiO2) coated glass spheres were used to treat 2, 4-dichlorophenoxy acetic acid (2, 4-D), methyl chlorophenoxy propionic acid (MCPP), and 3, 6-Dichloro-2-methoxy benzoic acid (Dicamba) in Killex®, a commercially available herbicide. Furthermore, photocatalytic degradation of sulfolane and a typical naphthenic acid (cyclopentane carboxylic acid—CPA) were also tested under ambient conditions. The results showed 99.8% degradation of 2, 4-D, 100% degradation of both MCPP and Dicamba in Killex® solution, and 97.4% degradation of sulfolane by capturing 3.18 MJ/m2 solar energy. Total organic carbon (TOC) was decreased by 88% and 64% in both solutions, respectively. TOC of the aqueous solution containing 20 ppm CPA was also decreased by 78.4% with 7.8 MJ/m2 energy. Despite the slow kinetics and the temporal variations of sunlight in northern latitudes, the results indicated that passive photocatalysis is a promising approach for treatment of contaminants under ambient conditions.

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“…Therefore, the efficient treatment to remove 2,4-D in water still needs to be investigated. There are various methods that have been reported to degrade 2,4-D. One of the most promising methods is by photocatalytic reaction [2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…As for photocatalytic degradation of 2,4-D, the most widely used photocatalysts were also TiO 2 and its modifications [2][3][4][5][6][7][8][9][10][11]. As a photocatalyst, TiO 2 has a range of useful features, including high photocatalytic activity, stability, low toxicity, ready availability and low cost.…”

Section: Introductionmentioning

confidence: 99%

“…Another approach to improve the activity of TiO 2 photocatalyst for degradation of 2,4-D is by introducing transition metal and rare earth oxides, such as copper [5][6][7][8], lanthanum [9][10], and iron oxides [11]. In particular, it has been shown that cobalt species has the potential of enhancing the photocatalytic activity of TiO 2 for various reactions [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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Cobalt Oxide-Modified Titanium Dioxide Nanoparticle Photocatalyst for Degradation of 2,4-Dichlorophenoxyacetic Acid

et al. 2017

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Photocatalytic removal of 2,4-dichlorophenoxyacetic acid herbicide on copper oxide/titanium dioxide prepared by co-precipitation method

Cited by 12 publications

References 13 publications

Photocatalytic Performance of Carbon-Containing CuMo-Based Catalysts under Sunlight Illumination

Photocatalytic Performance of Carbon-Containing CuMo-Based Catalysts under Sunlight Illumination

Passive Solar Photocatalytic Treatment of Emerging Contaminants in Water: A Field Study

Cobalt Oxide-Modified Titanium Dioxide Nanoparticle Photocatalyst for Degradation of 2,4-Dichlorophenoxyacetic Acid

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