Environmentally relevant impacts of nano-TiO2 on abiotic degradation of bisphenol A under sunlight irradiation

Wu, Wei; Shan, Guoqiang; Wang, Shanfeng; Zhu, Lingyan; Yue, Longfei; Qian, Xiang; Zhang, Yinqing; Li, Zhuo

doi:10.1016/j.envpol.2016.05.079

Cited by 32 publications

(6 citation statements)

References 57 publications

(67 reference statements)

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“…The presence of a relatively low concentration (1 mg/L) of HA increased the degradation efficiency of 4-t-BP from 89.8% to 92.4%, while higher concentrations (5mg/L and 10 mg/L) of HA decreased the degradation efficiency of 4-t-BP to 84.6% and 70.8%, respectively. The enhanced degradation of 4-t-BP in the presence of HA was also observed for the degradation of Bisphenol A [62] and dimethoate [63] by TiO 2 photocatalytic degradation. The positive effect of HA at low concentrations might be ascribed to the photosensitization of HA, which would produce extra electrons, leading to an improvement in the photocatalytic degradation of organic pollutants [62,64,65].…”

Section: Effect Of Ha and Coexisting Ions ( ) On The Degradation Of 4-t-bpmentioning

confidence: 55%

“…The enhanced degradation of 4-t-BP in the presence of HA was also observed for the degradation of Bisphenol A [62] and dimethoate [63] by TiO 2 photocatalytic degradation. The positive effect of HA at low concentrations might be ascribed to the photosensitization of HA, which would produce extra electrons, leading to an improvement in the photocatalytic degradation of organic pollutants [62,64,65]. On the other hand, at higher concentrations, HA adsorbed on the surface of the catalyst could compete with 4-t-BP for active sites, resulting in a reduction in degradation efficiency [66,67].…”

Section: Effect Of Ha and Coexisting Ions ( ) On The Degradation Of 4-t-bpmentioning

confidence: 55%

“…pollutants [62,64,65]. On the other hand, at higher concentrations, HA adsorbed on the surface of the catalyst could compete with 4-t-BP for active sites, resulting in a reduction in degradation efficiency [66,67].…”

Section: Effect Of Ha and Coexisting Ions ( ) On The Degradation Of 4-t-bpmentioning

confidence: 99%

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Ti2O3/TiO2-Assisted Solar Photocatalytic Degradation of 4-tert-Butylphenol in Water

2021

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Colored Ti2O3 and Ti2O3/TiO2 (mTiO) catalysts were prepared by the thermal treatment method. The effects of treatment temperature on the structure, surface area, morphology and optical properties of the as-prepared samples were investigated by XRD, BET, SEM, TEM, Raman and UV–VIS spectroscopies. Phase transformation from Ti2O3 to TiO2 rutile and TiO2 anatase to TiO2 rutile increased with increasing treatment temperatures. The photocatalytic activities of thermally treated Ti2O3 and mTiO were evaluated in the photodegradation of 4-tert-butylphenol (4-t-BP) under solar light irradiation. mTiO heated at 650 °C exhibited the highest photocatalytic activity for the degradation and mineralization of 4-t-BP, being approximately 89.8% and 52.4%, respectively, after 150 min of irradiation. The effects of various water constituents, including anions (CO32−, NO3, Cl and HCO3−) and humic acid (HA), on the photocatalytic activity of mTiO-650 were evaluated. The results showed that the presence of carbonate and nitrate ions inhibited 4-t-BP photodegradation, while chloride and bicarbonate ions enhanced the photodegradation of 4-t-BP. As for HA, its effect on the degradation of 4-t-BP was dependent on the concentration. A low concentration of HA (1 mg/L) promoted the degradation of 4-t-BP from 89.8% to 92.4% by mTiO-650, but higher concentrations of HA (5 mg/L and 10 mg/L) had a negative effect.

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Section: Effect Of Ha and Coexisting Ions ( ) On The Degradation Of 4-t-bpmentioning

confidence: 55%

Section: Effect Of Ha and Coexisting Ions ( ) On The Degradation Of 4-t-bpmentioning

confidence: 55%

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Ti2O3/TiO2-Assisted Solar Photocatalytic Degradation of 4-tert-Butylphenol in Water

2021

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“…In the meantime, a lot of abiotic methods (chemical and physical methods) have been reported. Wu reported BPA degradation by means of releasing nano-TiO 2 into a water environment with BPA at low concentration (Wu et al, 2016). It was proved that the abiotic degradation rate of BPA was significantly facilitated with the illumination of light.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Flower-Like g-C3N4/BiOBr and Enhancement of the Activity for the Degradation of Bisphenol A Under Visible Light Irradiation

Xie

Ling

et al. 2019

Front. Chem.

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The high recombination rates of photogenerated electron-holes greatly inhibit the catalytic activity of semiconductor photocatalysts. Herein, the heterojunctions of the flower-like g-C3N4/BiOBr composites were synthesized as photocatalysts by a simple hydrothermal process. The X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectrometer were utilized to characterize the sample's structure and light absorption properties. The results demonstrated that BiOBr-g-C3N4-4:1 showed excellent photocatalytic properties and 96.6% of bisphenol (BPA) was removed in 120 min with illumination of visible light due to its narrower band gap than that of pure BiOBr. BiOBr offer little electrons during the photocatalytic reaction. Moreover, the heterostructure between BiOBr and g-C3N4 facilitates the separation of photogenerated carriers. Excellent stability was exhibited after five cyclic degradation of methyl orange (MO) with the illumination of visible light. The active species trapping experiment indicated that superoxide radical anions (O2•-) and hole (h+) have a great effect on the reaction. A possible mechanism was proposed to explain the whole process of photocatalytic reaction.

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“…Bismuth halide oxide (BiOX, X = Cl, Br, I or F) with an anisotropic layered structure, as a photocatalyst, can decompose the coloured pollutants, especially, such as Rhodamine B (RhB), methyl orange (MO) and methylene blue (MB) [1][2][3][4][5][6][7]. However, there is a paucity of reports about the degradation of the colourless pollutants and the degradation efficiency is relatively low [8][9][10].…”

mentioning

confidence: 99%

Facile precipitation synthesis of extraordinary visible‐light‐driven BiOXs photocatalyst

Guo

Zhu

et al. 2020

Micro & Nano Letters

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Bismuth halide oxide with three halogen elements (P-BiOXs) catalyst was prepared by a facile precipitation method at room temperature only for 30 min. Several measurement technologies were employed to characterise the structures and morphologies of the obtained samples. Coloured Rhodamine B (RhB), methyl orange (MO), methylene blue (MB) and colourless bisphenol A (BPA) were selected to evaluate the photocatalytic activity of the samples. The experimental results showed the P-BiOXs thin nanoplates exhibited the most excellent photocatalytic activity among the prepared samples for the degradation of MO under visible light illumination. More importantly, the catalyst P-BiOXs could effectively degradate RhB, MB and BPA. The P-BiOXs catalyst displayed good photocatalytic stability by the recycling tests. The highly efficient visible light catalytic properties of P-BiOXs could be due to the high specific surface area, enhanced light-harvesting ability, the suitable bandgap energy and the lower recombination rate of the photogenerated electrons and holes.

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Environmentally relevant impacts of nano-TiO2 on abiotic degradation of bisphenol A under sunlight irradiation

Cited by 32 publications

References 57 publications

Ti2O3/TiO2-Assisted Solar Photocatalytic Degradation of 4-tert-Butylphenol in Water

Ti2O3/TiO2-Assisted Solar Photocatalytic Degradation of 4-tert-Butylphenol in Water

Synthesis of Flower-Like g-C3N4/BiOBr and Enhancement of the Activity for the Degradation of Bisphenol A Under Visible Light Irradiation

Facile precipitation synthesis of extraordinary visible‐light‐driven BiOXs photocatalyst

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