Preparation and characterization of titania- and organo-pillared clay hybrid photocatalysts capable of oxidizing aqueous bisphenol A under visible light

Sasai, Ryo; Watanabe, Reo; Yamada, Takuya

doi:10.1016/j.clay.2014.02.023

Cited by 19 publications

(6 citation statements)

References 44 publications

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“…With uses primarily in the production of plastics including the lining of food and beverage packaging and baby bottles, and the potential for BPA to impose estrogenic and toxicological risks, significant attention has been made in recent years to remove this threat [141][142][143][144][145][146]. Using nitrogen doped TiO 2 hollow spheres, Subagio et al was able to produce a 90% removal of BPA using vis-LED conditions (465 nm) when compared to TiO 2 and hollow spheres individually [147].…”

Section: Photocatalytic Treatment Of Endocrine Disrupting Compounds (mentioning

confidence: 99%

A review of solar and visible light active TiO2 photocatalysis for treating bacteria, cyanotoxins and contaminants of emerging concern

Fagan

McCormack

Dionysiou

et al. 2016

Materials Science in Semiconductor Processing

511

195

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Section: Photocatalytic Treatment Of Endocrine Disrupting Compounds (mentioning

confidence: 99%

A review of solar and visible light active TiO2 photocatalysis for treating bacteria, cyanotoxins and contaminants of emerging concern

Fagan

McCormack

Dionysiou

et al. 2016

Materials Science in Semiconductor Processing

511

195

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“…In this context, we have previously developed functional materials by hybridizing functional molecules, such as dyes, with ion-exchangeable layered inorganic compounds modified with amphipathic molecules. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] More specifically, an R6G/C16TMA/Lap hybrid material comprising rhodamine 6G (R6G) and laponite clay (Lap) modified by the hexadecyltrimethylammonium (C16TMA) cation, retained the luminous properties of R6G under both dry and wet conditions. 6 Through the use of hexyltrimethylammonium (C6TMA) cations with shorter alkyl chains instead of C16TMA, the luminous properties of R6G in the R6G/C6TMA/Lap hybrid material varied under dry and wet conditions.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Sensitive Detection of Pyridine in Water Using Zinc Porphyrin Incorporated in a Transparent Hydrophobic Film

Sasai

Aoyama

Fujimura

2021

Preprint

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In this study, we investigated the axial coordination reaction between pyridine and zinc meso-tetra(4-sulfonatophenyl)porphyrin (ZnTPPS) incorporated in a transparent layered double hydroxide (LDH) film modified with 1-decanesulfonate (C10S) in an aqueous solution. The equilibrium constant (K11) of the axial coordination reaction between pyridine and ZnTPPS incorporated in the transparent ZnTPPS/C10S/LDH film was approximately 260 times that of the corresponding reaction in an aqueous solution. The hydrophobisation of the LDH interlayer space by C10S, which led to the elimination of water molecules surrounding ZnTPPS and enabled the accumulation of pyridine molecules, was responsible for such a significant increase in the K11 value. The developed film can detect pyridine in aqueous solutions with ultra-high sensitivity in the order of 10−5 mol/L through changes in the colour tone, which is comparable to the molecular detection ability of insect antennae. The sensing response was also observed at pyridine concentrations as low as 10−9 mol/L.

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“…It is reported that VTiO 2 -montmorillonite nanocomposites with visible response were prepared by the solgel method. 15) Sasai et al 16) reported that a type of dye-sensitized organo-pillared clays with cationic Cuphthalocyanine derivatives as photosensitizers exhibited remarkable adsorption capacity and effective photocatalytic activity to bisphenol-a under visible-light irradiation. J. H. Zhang et al 17) reported that a novel and efficient attapulgite composite with visible light response was prepared by introducing BiOBrTiO 2 hybrid oxides onto its surface using in-situ deposition.…”

Section: Introductionmentioning

confidence: 99%

Preparation of carbon-modified N–TiO<sub>2</sub>/montmorillonite composite with high photocatalytic activity under visible light radiation

Hsing

Kameshima

Nishimoto

et al. 2018

J. Ceram. Soc. Japan

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In this paper, the photocatalytic activity of nitrogen-doped TiO 2 /montmorillonite composite (NTM) was successfully enhanced by modification with carbon. NTM was made by mixing a swelling clay solution with an N-doped TiO 2 solution prepared by hydrolysis of titanium tetraisopropoxide with urea. Carbon-modified Ndoped TiO 2 /montmorillonite composite (CNTM) was obtained by grinding the dried NTM with EtOH for 1 h, followed by calcination at 250°C in the air for 2 h. Both NTM and CNTM exhibited visible light absorption in the UVvis spectrum in the same way as commercial NTiO 2 powder. Additionally, CNTM greatly extended the absorption edges to the visible light region. The photocatalytic performance of NTM and CNTM was evaluated using a degradation of bisphenol-A under visible light (>420 nm) radiation. Although the commercial TiO 2 powder showed less photocatalytic activity under visible light radiation, NTM, CNTM and commercial NTiO 2 powder showed high photocatalytic activity. The order of degradation performance was as follows: CNTM > commercial NTiO 2 powder > NTM. Since the TiO 2 content of CNTM is ca. 30 mass % by energy dispersive spectrum analysis, it was suggested that CNTM has extremely high visible light activity.

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Preparation and characterization of titania- and organo-pillared clay hybrid photocatalysts capable of oxidizing aqueous bisphenol A under visible light

Cited by 19 publications

References 44 publications

A review of solar and visible light active TiO2 photocatalysis for treating bacteria, cyanotoxins and contaminants of emerging concern

A review of solar and visible light active TiO2 photocatalysis for treating bacteria, cyanotoxins and contaminants of emerging concern

Ultra-Sensitive Detection of Pyridine in Water Using Zinc Porphyrin Incorporated in a Transparent Hydrophobic Film

Preparation of carbon-modified N–TiO<sub>2</sub>/montmorillonite composite with high photocatalytic activity under visible light radiation

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