Photocatalytic hydrogen production by ternary heterojunction composites of silver nanoparticles doped FCNT-TiO2

N. Ramesh Reddy; U. Bharagav; M. V. Shankar; P. Mohan Reddy; Kakarla Raghava Reddy; Nagaraj P. Shetti; Fernando Alonso-Marroquin; M. Mamatha Kumari; Tejraj M. Aminabhavi; Sang Woo Joo

doi:10.1016/j.jenvman.2021.112130

Photocatalytic hydrogen production by ternary heterojunction composites of silver nanoparticles doped FCNT-TiO₂

N. Ramesh Reddy
, U. Bharagav
, M. V. Shankar
, P. Mohan Reddy
, Kakarla Raghava Reddy
, Nagaraj P. Shetti
, Fernando Alonso-Marroquin
, M. Mamatha Kumari^*
, Tejraj M. Aminabhavi^*
, Sang Woo Joo^*

^*Corresponding author for this work

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

40 Scopus citations

Abstract

Silver nanoparticles doped with FCNT-TiO₂ heterogeneous catalyst was prepared via one-step chemical reduction process and their efficacy was tested for hydrogen production under solar simulator. Crystallinity, purity, optical properties, and morphologies of the catalysts were examined by X-Ray diffraction, Raman spectroscopy, UV–Visible diffuse reflectance spectra, and Transmission Electron Microscopy. The chemical states and interface interactions were studied by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The optimized catalyst showed 19.2 mmol g⁻¹ h⁻¹ of hydrogen production, which is 28.5 and 7 times higher than the pristine TiO₂ nanoparticles and FCNT-TiO₂ nanocomposite, respectively. The optimized catalyst showed stability up to 50 h under the solar simulator irradiation. The natural solar light irradiated catalyst showed ~2.2 times higher hydrogen production rate than the solar simulator irradiation. A plausible reaction mechanism of Ag NPs/FCNT-TiO₂ photocatalyst was elucidated by investigating the beneficial co-catalytic role of Ag NPs and FCNTs for enhanced hydrogen production.

Original language	English
Article number	112130
Journal	Journal of Environmental Management
Volume	286
DOIs	https://doi.org/10.1016/j.jenvman.2021.112130
State	Published - 15 May 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021 Elsevier Ltd

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

CNTs
Chemical reduction
Hydrogen production
Photocatalysis
Silver nanoparticles
TiO nanoparticles

ASJC Scopus subject areas

Environmental Engineering
Waste Management and Disposal
Management, Monitoring, Policy and Law

Access to Document

10.1016/j.jenvman.2021.112130

Cite this

Reddy, N. R., Bharagav, U., Shankar, M. V., Reddy, P. M., Reddy, K. R., Shetti, N. P., Alonso-Marroquin, F., Kumari, M. M., Aminabhavi, T. M., & Joo, S. W. (2021). Photocatalytic hydrogen production by ternary heterojunction composites of silver nanoparticles doped FCNT-TiO₂. Journal of Environmental Management, 286, Article 112130. https://doi.org/10.1016/j.jenvman.2021.112130

@article{4822100d2f0f4ed49163d79e1f9c8c9b,

title = "Photocatalytic hydrogen production by ternary heterojunction composites of silver nanoparticles doped FCNT-TiO2",

abstract = "Silver nanoparticles doped with FCNT-TiO2 heterogeneous catalyst was prepared via one-step chemical reduction process and their efficacy was tested for hydrogen production under solar simulator. Crystallinity, purity, optical properties, and morphologies of the catalysts were examined by X-Ray diffraction, Raman spectroscopy, UV–Visible diffuse reflectance spectra, and Transmission Electron Microscopy. The chemical states and interface interactions were studied by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The optimized catalyst showed 19.2 mmol g−1 h−1 of hydrogen production, which is 28.5 and 7 times higher than the pristine TiO2 nanoparticles and FCNT-TiO2 nanocomposite, respectively. The optimized catalyst showed stability up to 50 h under the solar simulator irradiation. The natural solar light irradiated catalyst showed \textasciitilde{}2.2 times higher hydrogen production rate than the solar simulator irradiation. A plausible reaction mechanism of Ag NPs/FCNT-TiO2 photocatalyst was elucidated by investigating the beneficial co-catalytic role of Ag NPs and FCNTs for enhanced hydrogen production.",

keywords = "CNTs, Chemical reduction, Hydrogen production, Photocatalysis, Silver nanoparticles, TiO nanoparticles",

author = "Reddy, \{N. Ramesh\} and U. Bharagav and Shankar, \{M. V.\} and Reddy, \{P. Mohan\} and Reddy, \{Kakarla Raghava\} and Shetti, \{Nagaraj P.\} and Fernando Alonso-Marroquin and Kumari, \{M. Mamatha\} and Aminabhavi, \{Tejraj M.\} and Joo, \{Sang Woo\}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = may,

day = "15",

doi = "10.1016/j.jenvman.2021.112130",

language = "English",

volume = "286",

}

TY - JOUR

T1 - Photocatalytic hydrogen production by ternary heterojunction composites of silver nanoparticles doped FCNT-TiO2

AU - Reddy, N. Ramesh

AU - Bharagav, U.

AU - Shankar, M. V.

AU - Reddy, P. Mohan

AU - Reddy, Kakarla Raghava

AU - Shetti, Nagaraj P.

AU - Alonso-Marroquin, Fernando

AU - Kumari, M. Mamatha

AU - Aminabhavi, Tejraj M.

AU - Joo, Sang Woo

PY - 2021/5/15

Y1 - 2021/5/15

N2 - Silver nanoparticles doped with FCNT-TiO2 heterogeneous catalyst was prepared via one-step chemical reduction process and their efficacy was tested for hydrogen production under solar simulator. Crystallinity, purity, optical properties, and morphologies of the catalysts were examined by X-Ray diffraction, Raman spectroscopy, UV–Visible diffuse reflectance spectra, and Transmission Electron Microscopy. The chemical states and interface interactions were studied by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The optimized catalyst showed 19.2 mmol g−1 h−1 of hydrogen production, which is 28.5 and 7 times higher than the pristine TiO2 nanoparticles and FCNT-TiO2 nanocomposite, respectively. The optimized catalyst showed stability up to 50 h under the solar simulator irradiation. The natural solar light irradiated catalyst showed ~2.2 times higher hydrogen production rate than the solar simulator irradiation. A plausible reaction mechanism of Ag NPs/FCNT-TiO2 photocatalyst was elucidated by investigating the beneficial co-catalytic role of Ag NPs and FCNTs for enhanced hydrogen production.

AB - Silver nanoparticles doped with FCNT-TiO2 heterogeneous catalyst was prepared via one-step chemical reduction process and their efficacy was tested for hydrogen production under solar simulator. Crystallinity, purity, optical properties, and morphologies of the catalysts were examined by X-Ray diffraction, Raman spectroscopy, UV–Visible diffuse reflectance spectra, and Transmission Electron Microscopy. The chemical states and interface interactions were studied by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The optimized catalyst showed 19.2 mmol g−1 h−1 of hydrogen production, which is 28.5 and 7 times higher than the pristine TiO2 nanoparticles and FCNT-TiO2 nanocomposite, respectively. The optimized catalyst showed stability up to 50 h under the solar simulator irradiation. The natural solar light irradiated catalyst showed ~2.2 times higher hydrogen production rate than the solar simulator irradiation. A plausible reaction mechanism of Ag NPs/FCNT-TiO2 photocatalyst was elucidated by investigating the beneficial co-catalytic role of Ag NPs and FCNTs for enhanced hydrogen production.

KW - CNTs

KW - Chemical reduction

KW - Hydrogen production

KW - Photocatalysis

KW - Silver nanoparticles

KW - TiO nanoparticles

UR - https://www.scopus.com/pages/publications/85101955343

U2 - 10.1016/j.jenvman.2021.112130

DO - 10.1016/j.jenvman.2021.112130

M3 - Article

C2 - 33684804

AN - SCOPUS:85101955343

SN - 0301-4797

VL - 286

JO - Journal of Environmental Management

JF - Journal of Environmental Management

M1 - 112130

ER -