Boron-doped TiO2-CNT nanocomposites with improved photocatalytic efficiency toward photodegradation of toluene gas and photo-inactivation of Escherichia coli

Valmiki B. Koli; Shyue Chu Ke; Ananta G. Dodamani; Shamkumar P. Deshmukh; Jung Sik Kim

doi:10.3390/catal10060632

Boron-doped TiO₂-CNT nanocomposites with improved photocatalytic efficiency toward photodegradation of toluene gas and photo-inactivation of Escherichia coli

Valmiki B. Koli, Shyue Chu Ke, Ananta G. Dodamani, Shamkumar P. Deshmukh, Jung Sik Kim

Department of Materials Science and Engineering

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

24 Scopus citations

Abstract

An in-situ sol-gel method was used for the synthesis of boron-doped TiO₂-CNT nanocomposites with varied boron concentrations from 1 to 4 mol%. The synthesized nanocomposites were characterized by various techniques, namely XRD, UV-DRS, TEM, PL, and XPS; all results show that 3 mol% B-TiO₂-CNT nanocomposites have superior properties to pure TiO₂, 3B-TiO₂ nanoparticles, and other nanocomposites. TEM images clearly show the B-TiO₂ nanoparticles decorated on the CNT surface. Photo-luminescence studies confirm that boron doping of up to 3 mol% in TiO₂-CNT nanocomposites reduces the electron-hole pair recombination rate. The photocatalytic performance of the B-TiO₂-CNT nanocomposites was tested against the photodegradation of toluene gas and the photocatalytic inactivation of E. coli in the presence of UV and visible light respectively. B-TiO₂-CNT (3 mol%) nanocomposites show the highest photocatalytic activity.

Original language	English
Article number	632
Journal	Catalysts
Volume	10
Issue number	6
DOIs	https://doi.org/10.3390/catal10060632
State	Published - Jun 2020

Keywords

B-TiO-CNT nanocomposites
Organic pollutants
Photocatalysis
UV and visible light

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10.3390/catal10060632

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@article{0b494d6f2ceb42e8bca7663f67201b77,

title = "Boron-doped TiO2-CNT nanocomposites with improved photocatalytic efficiency toward photodegradation of toluene gas and photo-inactivation of Escherichia coli",

abstract = "An in-situ sol-gel method was used for the synthesis of boron-doped TiO2-CNT nanocomposites with varied boron concentrations from 1 to 4 mol%. The synthesized nanocomposites were characterized by various techniques, namely XRD, UV-DRS, TEM, PL, and XPS; all results show that 3 mol% B-TiO2-CNT nanocomposites have superior properties to pure TiO2, 3B-TiO2 nanoparticles, and other nanocomposites. TEM images clearly show the B-TiO2 nanoparticles decorated on the CNT surface. Photo-luminescence studies confirm that boron doping of up to 3 mol% in TiO2-CNT nanocomposites reduces the electron-hole pair recombination rate. The photocatalytic performance of the B-TiO2-CNT nanocomposites was tested against the photodegradation of toluene gas and the photocatalytic inactivation of E. coli in the presence of UV and visible light respectively. B-TiO2-CNT (3 mol%) nanocomposites show the highest photocatalytic activity.",

keywords = "B-TiO-CNT nanocomposites, Organic pollutants, Photocatalysis, UV and visible light",

author = "Koli, {Valmiki B.} and Ke, {Shyue Chu} and Dodamani, {Ananta G.} and Deshmukh, {Shamkumar P.} and Kim, {Jung Sik}",

note = "Publisher Copyright: {\textcopyright} 2020 by the authors.",

year = "2020",

month = jun,

doi = "10.3390/catal10060632",

language = "English",

volume = "10",

journal = "Catalysts",

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T1 - Boron-doped TiO2-CNT nanocomposites with improved photocatalytic efficiency toward photodegradation of toluene gas and photo-inactivation of Escherichia coli

AU - Koli, Valmiki B.

AU - Ke, Shyue Chu

AU - Dodamani, Ananta G.

AU - Deshmukh, Shamkumar P.

AU - Kim, Jung Sik

PY - 2020/6

Y1 - 2020/6

N2 - An in-situ sol-gel method was used for the synthesis of boron-doped TiO2-CNT nanocomposites with varied boron concentrations from 1 to 4 mol%. The synthesized nanocomposites were characterized by various techniques, namely XRD, UV-DRS, TEM, PL, and XPS; all results show that 3 mol% B-TiO2-CNT nanocomposites have superior properties to pure TiO2, 3B-TiO2 nanoparticles, and other nanocomposites. TEM images clearly show the B-TiO2 nanoparticles decorated on the CNT surface. Photo-luminescence studies confirm that boron doping of up to 3 mol% in TiO2-CNT nanocomposites reduces the electron-hole pair recombination rate. The photocatalytic performance of the B-TiO2-CNT nanocomposites was tested against the photodegradation of toluene gas and the photocatalytic inactivation of E. coli in the presence of UV and visible light respectively. B-TiO2-CNT (3 mol%) nanocomposites show the highest photocatalytic activity.

AB - An in-situ sol-gel method was used for the synthesis of boron-doped TiO2-CNT nanocomposites with varied boron concentrations from 1 to 4 mol%. The synthesized nanocomposites were characterized by various techniques, namely XRD, UV-DRS, TEM, PL, and XPS; all results show that 3 mol% B-TiO2-CNT nanocomposites have superior properties to pure TiO2, 3B-TiO2 nanoparticles, and other nanocomposites. TEM images clearly show the B-TiO2 nanoparticles decorated on the CNT surface. Photo-luminescence studies confirm that boron doping of up to 3 mol% in TiO2-CNT nanocomposites reduces the electron-hole pair recombination rate. The photocatalytic performance of the B-TiO2-CNT nanocomposites was tested against the photodegradation of toluene gas and the photocatalytic inactivation of E. coli in the presence of UV and visible light respectively. B-TiO2-CNT (3 mol%) nanocomposites show the highest photocatalytic activity.

KW - B-TiO-CNT nanocomposites

KW - Organic pollutants

KW - Photocatalysis

KW - UV and visible light

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DO - 10.3390/catal10060632

M3 - Article

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SN - 2073-4344

VL - 10

JO - Catalysts

JF - Catalysts

IS - 6

M1 - 632

ER -

Boron-doped TiO₂-CNT nanocomposites with improved photocatalytic efficiency toward photodegradation of toluene gas and photo-inactivation of Escherichia coli

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