Use of pectin-thorium (IV) tungstomolybdate nanocomposite for photocatalytic degradation of methylene blue

Vinod Kumar Gupta; Shilpi Agarwal; Deepak Pathania; N. C. Kothiyal; Gaurav Sharma

doi:10.1016/j.carbpol.2013.03.073

Use of pectin-thorium (IV) tungstomolybdate nanocomposite for photocatalytic degradation of methylene blue

Vinod Kumar Gupta^*, Shilpi Agarwal, Deepak Pathania, N. C. Kothiyal, Gaurav Sharma

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

82 Scopus citations

Abstract

Pectin-thorium (IV) tungstomolybdate (Pc/TWM) nanocomposite was prepared by mixing biopolymer pectin with its inorganic counterpart thorium (IV) tungstomolybdate (TWM) using the sol-gel method. The nanocomposite was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). Distribution coefficient, thermal stability, pH titrations, elution and concentration behaviour were investigated to explore the ion exchange behaviour of nanocomposite material. Pc/TWM exhibited higher ion exchange capacity (1.10 mequiv/g) than its inorganic counterpart (0.62 mequiv/g). The Pc/TWM nanocomposite ion exchanger was thermally stable as it retained 59% of its ion exchange capacity upto 400 C. The pH titrations study revealed the bifunctional nature of Pc/TWM. Inorder to explore the environmental applicability of the Pc/TWM nanocomposite material, its antibacterial and photocatalytic activities was investigated. 76% of methylene blue dye was photocatalytically degraded after five hours exposure. It also totally inhibited Escherichia coli at 400 μg/ml concentration of Pc/TWM nanocomposite.

Original language	English
Pages (from-to)	277-283
Number of pages	7
Journal	Carbohydrate Polymers
Volume	96
Issue number	1
DOIs	https://doi.org/10.1016/j.carbpol.2013.03.073
State	Published - 1 Jul 2013
Externally published	Yes

Keywords

Antibacterial activity
Characterization
Pectin
Photocatalysis
Thorium (IV) tungstomolybdate

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/j.carbpol.2013.03.073

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title = "Use of pectin-thorium (IV) tungstomolybdate nanocomposite for photocatalytic degradation of methylene blue",

abstract = "Pectin-thorium (IV) tungstomolybdate (Pc/TWM) nanocomposite was prepared by mixing biopolymer pectin with its inorganic counterpart thorium (IV) tungstomolybdate (TWM) using the sol-gel method. The nanocomposite was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). Distribution coefficient, thermal stability, pH titrations, elution and concentration behaviour were investigated to explore the ion exchange behaviour of nanocomposite material. Pc/TWM exhibited higher ion exchange capacity (1.10 mequiv/g) than its inorganic counterpart (0.62 mequiv/g). The Pc/TWM nanocomposite ion exchanger was thermally stable as it retained 59\% of its ion exchange capacity upto 400 C. The pH titrations study revealed the bifunctional nature of Pc/TWM. Inorder to explore the environmental applicability of the Pc/TWM nanocomposite material, its antibacterial and photocatalytic activities was investigated. 76\% of methylene blue dye was photocatalytically degraded after five hours exposure. It also totally inhibited Escherichia coli at 400 μg/ml concentration of Pc/TWM nanocomposite.",

keywords = "Antibacterial activity, Characterization, Pectin, Photocatalysis, Thorium (IV) tungstomolybdate",

author = "Gupta, \{Vinod Kumar\} and Shilpi Agarwal and Deepak Pathania and Kothiyal, \{N. C.\} and Gaurav Sharma",

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AU - Gupta, Vinod Kumar

AU - Agarwal, Shilpi

AU - Pathania, Deepak

AU - Kothiyal, N. C.

AU - Sharma, Gaurav

PY - 2013/7/1

Y1 - 2013/7/1

N2 - Pectin-thorium (IV) tungstomolybdate (Pc/TWM) nanocomposite was prepared by mixing biopolymer pectin with its inorganic counterpart thorium (IV) tungstomolybdate (TWM) using the sol-gel method. The nanocomposite was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). Distribution coefficient, thermal stability, pH titrations, elution and concentration behaviour were investigated to explore the ion exchange behaviour of nanocomposite material. Pc/TWM exhibited higher ion exchange capacity (1.10 mequiv/g) than its inorganic counterpart (0.62 mequiv/g). The Pc/TWM nanocomposite ion exchanger was thermally stable as it retained 59% of its ion exchange capacity upto 400 C. The pH titrations study revealed the bifunctional nature of Pc/TWM. Inorder to explore the environmental applicability of the Pc/TWM nanocomposite material, its antibacterial and photocatalytic activities was investigated. 76% of methylene blue dye was photocatalytically degraded after five hours exposure. It also totally inhibited Escherichia coli at 400 μg/ml concentration of Pc/TWM nanocomposite.

AB - Pectin-thorium (IV) tungstomolybdate (Pc/TWM) nanocomposite was prepared by mixing biopolymer pectin with its inorganic counterpart thorium (IV) tungstomolybdate (TWM) using the sol-gel method. The nanocomposite was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). Distribution coefficient, thermal stability, pH titrations, elution and concentration behaviour were investigated to explore the ion exchange behaviour of nanocomposite material. Pc/TWM exhibited higher ion exchange capacity (1.10 mequiv/g) than its inorganic counterpart (0.62 mequiv/g). The Pc/TWM nanocomposite ion exchanger was thermally stable as it retained 59% of its ion exchange capacity upto 400 C. The pH titrations study revealed the bifunctional nature of Pc/TWM. Inorder to explore the environmental applicability of the Pc/TWM nanocomposite material, its antibacterial and photocatalytic activities was investigated. 76% of methylene blue dye was photocatalytically degraded after five hours exposure. It also totally inhibited Escherichia coli at 400 μg/ml concentration of Pc/TWM nanocomposite.

KW - Antibacterial activity

KW - Characterization

KW - Pectin

KW - Photocatalysis

KW - Thorium (IV) tungstomolybdate

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ER -

Use of pectin-thorium (IV) tungstomolybdate nanocomposite for photocatalytic degradation of methylene blue

Abstract

Keywords

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