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.
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U2 - 10.1016/j.ceramint.2020.12.014
DO - 10.1016/j.ceramint.2020.12.014
M3 - Article
AN - SCOPUS:85097893558
VL - 47
SP - 10314
EP - 10321
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
IS - 7
ER -