Carbon-based TiO2-x heterostructure nanocomposites for enhanced photocatalytic degradation of dye molecules

Jagadeesh Babu Sriramoju; Murthy Muniyappa; Navya Rani Marilingaiah; Chetana Sabbanahalli; Manjunath Shetty; Ravi Mudike; Chitrabanu C.P; Prasanna D. Shivaramu; Nagaraju G; Kanchugarakoppal S. Rangappa; Ananda Kumar Ananda; Dinesh Rangappa

doi:10.1016/j.ceramint.2020.12.014

Carbon-based TiO_2-x heterostructure nanocomposites for enhanced photocatalytic degradation of dye molecules

Jagadeesh Babu Sriramoju
, Murthy Muniyappa
, Navya Rani Marilingaiah
, Chetana Sabbanahalli
, Manjunath Shetty
, Ravi Mudike
, Chitrabanu C.P
, Prasanna D. Shivaramu
, Nagaraju G
, Kanchugarakoppal S. Rangappa
, Ananda Kumar Ananda^*
, Dinesh Rangappa

^*Corresponding author for this work

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

39 Citations (Scopus)

Abstract

Application of brown titanium dioxide (TiO_2-x) and its modified composite forms in the photocatalytic decomposition of organic pollutants in the environment is a promising way to provide solutions for environmental redemption. Herein, we report the synthesis of effective and stable TiO_2-x nanoparticles with g-C₃N₄, RGO, and multiwalled carbon nanotubes (CNTs) using a simple hydrothermal method. Among all the as-synthesized samples, excellent photocatalytic degradation activity was observed for RGO-TiO_2-x nanocomposite with high rate constants of 0.075 min⁻¹, 0.083 min⁻¹ and 0.093 min⁻¹ for methylene blue, rhodamine-B, and rosebengal dyes under UV–Visible light irradiation, respectively. The altered bandgap (1.8 eV) and the large surface area of RGO-TiO_2-x nanocomposite impacts on both absorption of visible light and efficiency of photogenerated charge electron (e⁻)/hole (h⁺) pair separation. This resulted in enhanced photocatalytic property of carbon-based TiO_2-x nanocomposites. A systematic study on the influence of different carbon nanostructures on the photocatalytic activity of brown TiO_2-x is carried out.

Original language	English
Pages (from-to)	10314-10321
Number of pages	8
Journal	Ceramics International
Volume	47
Issue number	7
DOIs	https://doi.org/10.1016/j.ceramint.2020.12.014
Publication status	Published - 01-04-2021

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2020.12.014

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Sriramoju, J. B., Muniyappa, M., Marilingaiah, N. R., Sabbanahalli, C., Shetty, M., Mudike, R., C.P, C., Shivaramu, P. D., G, N., Rangappa, K. S., Ananda, A. K., & Rangappa, D. (2021). Carbon-based TiO_2-x heterostructure nanocomposites for enhanced photocatalytic degradation of dye molecules. Ceramics International, 47(7), 10314-10321. https://doi.org/10.1016/j.ceramint.2020.12.014

@article{8c26127fe62a4eec86b7d8118b7aa0c8,

title = "Carbon-based TiO2-x heterostructure nanocomposites for enhanced photocatalytic degradation of dye molecules",

abstract = "Application of brown titanium dioxide (TiO2-x) and its modified composite forms in the photocatalytic decomposition of organic pollutants in the environment is a promising way to provide solutions for environmental redemption. Herein, we report the synthesis of effective and stable TiO2-x nanoparticles with g-C3N4, RGO, and multiwalled carbon nanotubes (CNTs) using a simple hydrothermal method. Among all the as-synthesized samples, excellent photocatalytic degradation activity was observed for RGO-TiO2-x nanocomposite with high rate constants of 0.075 min−1, 0.083 min−1 and 0.093 min−1 for methylene blue, rhodamine-B, and rosebengal dyes under UV{\textendash}Visible light irradiation, respectively. The altered bandgap (1.8 eV) and the large surface area of RGO-TiO2-x nanocomposite impacts on both absorption of visible light and efficiency of photogenerated charge electron (e−)/hole (h+) pair separation. This resulted in enhanced photocatalytic property of carbon-based TiO2-x nanocomposites. A systematic study on the influence of different carbon nanostructures on the photocatalytic activity of brown TiO2-x is carried out.",

author = "Sriramoju, \{Jagadeesh Babu\} and Murthy Muniyappa and Marilingaiah, \{Navya Rani\} and Chetana Sabbanahalli and Manjunath Shetty and Ravi Mudike and Chitrabanu C.P and Shivaramu, \{Prasanna D.\} and Nagaraju G and Rangappa, \{Kanchugarakoppal S.\} and Ananda, \{Ananda Kumar\} and Dinesh Rangappa",

note = "Funding Information: This work is partially supported by the Vision Group on Science and Technology, Department of Information Technology, Biotechnology and Science \& Technology, Government of Karnataka under grant No. VGST/CESEM/2012-13/182 . The authors would like to CeNs Bangalore, CeNSE, IISc Bangalore for INUP program, SAIF Cochin, and SAIF IIT Madras for providing characterization facilities. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd and Techna Group S.r.l.",

year = "2021",

month = apr,

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doi = "10.1016/j.ceramint.2020.12.014",

language = "English",

volume = "47",

pages = "10314--10321",

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Sriramoju, JB, Muniyappa, M, Marilingaiah, NR, Sabbanahalli, C, Shetty, M, Mudike, R, C.P, C, Shivaramu, PD, G, N, Rangappa, KS, Ananda, AK & Rangappa, D 2021, 'Carbon-based TiO_2-x heterostructure nanocomposites for enhanced photocatalytic degradation of dye molecules', Ceramics International, vol. 47, no. 7, pp. 10314-10321. https://doi.org/10.1016/j.ceramint.2020.12.014

TY - JOUR

T1 - Carbon-based TiO2-x heterostructure nanocomposites for enhanced photocatalytic degradation of dye molecules

AU - Sriramoju, Jagadeesh Babu

AU - Muniyappa, Murthy

AU - Marilingaiah, Navya Rani

AU - Sabbanahalli, Chetana

AU - Shetty, Manjunath

AU - Mudike, Ravi

AU - C.P, Chitrabanu

AU - Shivaramu, Prasanna D.

AU - G, Nagaraju

AU - Rangappa, Kanchugarakoppal S.

AU - Ananda, Ananda Kumar

AU - Rangappa, Dinesh

N1 - Funding Information: This work is partially supported by the Vision Group on Science and Technology, Department of Information Technology, Biotechnology and Science & Technology, Government of Karnataka under grant No. VGST/CESEM/2012-13/182 . The authors would like to CeNs Bangalore, CeNSE, IISc Bangalore for INUP program, SAIF Cochin, and SAIF IIT Madras for providing characterization facilities. Publisher Copyright: © 2020 Elsevier Ltd and Techna Group S.r.l.

PY - 2021/4/1

Y1 - 2021/4/1

N2 - Application of brown titanium dioxide (TiO2-x) and its modified composite forms in the photocatalytic decomposition of organic pollutants in the environment is a promising way to provide solutions for environmental redemption. Herein, we report the synthesis of effective and stable TiO2-x nanoparticles with g-C3N4, RGO, and multiwalled carbon nanotubes (CNTs) using a simple hydrothermal method. Among all the as-synthesized samples, excellent photocatalytic degradation activity was observed for RGO-TiO2-x nanocomposite with high rate constants of 0.075 min−1, 0.083 min−1 and 0.093 min−1 for methylene blue, rhodamine-B, and rosebengal dyes under UV–Visible light irradiation, respectively. The altered bandgap (1.8 eV) and the large surface area of RGO-TiO2-x nanocomposite impacts on both absorption of visible light and efficiency of photogenerated charge electron (e−)/hole (h+) pair separation. This resulted in enhanced photocatalytic property of carbon-based TiO2-x nanocomposites. A systematic study on the influence of different carbon nanostructures on the photocatalytic activity of brown TiO2-x is carried out.

AB - Application of brown titanium dioxide (TiO2-x) and its modified composite forms in the photocatalytic decomposition of organic pollutants in the environment is a promising way to provide solutions for environmental redemption. Herein, we report the synthesis of effective and stable TiO2-x nanoparticles with g-C3N4, RGO, and multiwalled carbon nanotubes (CNTs) using a simple hydrothermal method. Among all the as-synthesized samples, excellent photocatalytic degradation activity was observed for RGO-TiO2-x nanocomposite with high rate constants of 0.075 min−1, 0.083 min−1 and 0.093 min−1 for methylene blue, rhodamine-B, and rosebengal dyes under UV–Visible light irradiation, respectively. The altered bandgap (1.8 eV) and the large surface area of RGO-TiO2-x nanocomposite impacts on both absorption of visible light and efficiency of photogenerated charge electron (e−)/hole (h+) pair separation. This resulted in enhanced photocatalytic property of carbon-based TiO2-x nanocomposites. A systematic study on the influence of different carbon nanostructures on the photocatalytic activity of brown TiO2-x is carried out.

UR - https://www.scopus.com/pages/publications/85097893558

UR - https://www.scopus.com/pages/publications/85097893558#tab=citedBy

U2 - 10.1016/j.ceramint.2020.12.014

DO - 10.1016/j.ceramint.2020.12.014

M3 - Article

AN - SCOPUS:85097893558

SN - 0272-8842

VL - 47

SP - 10314

EP - 10321

JO - Ceramics International

JF - Ceramics International

IS - 7

ER -

Carbon-based TiO_2-x heterostructure nanocomposites for enhanced photocatalytic degradation of dye molecules

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