International Journal of Photochemistry and Photobiology

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Lignocelluloses Modified TiO2 Nanomaterials as Renewable Photocatalyst for Water Splitting

Received: 19 July 2018    Accepted: 30 July 2018    Published: 28 August 2018
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Abstract

Photocatalytic water splitting process is a hopeful means to solve depletion and environmental pollution problems caused by fossil fuels as well as for sustainable hydrogen production using renewable natural resources like sunlight and biomass (cotton stalk). In this study the aim was to fabricate cotton stalk extracted Lignocellulose (LGO) Titanium oxide (TiO2) nanoparticles via sol-gel in ethanol and to investigate their photocatalytic water splitting activities under Visible light irradiation. Hence, in this study the opportunity for structural development of lignocellulose (LGO) modified TiO2 nanomaterial towards highly efficient and realistic photocatalysis applications are evidently abundant after improved light absorption, charge-carrier dynamics, and improved particle size porosity that benefits photocatalysis functionalities. LGO-TiO2 nanoparticle, (≈19.57 nm) for photocatalysis was prepared via sol-gel method. The fabricated nanomaterial photoelectrochemical characterization was operated using three electrode system with a photoanode as a working electrode, coiled Pt wire as a counter electrode and Hg/Hg2Cl2 as a reference electrode, and 0.5 M Na2SO4 (with pH buffered at 6.75) purged with N2, solution was applied as a supporting electrolyte. The structural and morphological characterizations of the fabricated nanomaterial are carried out using FTIR, XRD, SEM, and EDX techniques, based upon which the mechanistic insights are discussed. SEM analysis suggests that an average size of particle grain size is found to be in the range of 0.5-4 μm. The photocurrent densities of regular TiO2 and LGO-TiO2 towards water splitting reaction under light illumination from xenon lamp were compared and found in reasonable agreement. The work also studied the application of visible light illuminated LGO-TiO2 photoanode photocatalyst to the overall water splitting with a photoconversion efficiency of 18.91% higher than that of bare TiO2 nanoparticles and this suggests that surface functionality, surface topography, porosity and particle size, as well as purity and chemical composition of the prepared sample was successfully functionalized..

DOI 10.11648/j.ijpp.20180201.12
Published in International Journal of Photochemistry and Photobiology (Volume 2, Issue 1, June 2018)
Page(s) 5-11
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Biomass, Water-Splitting, Lignocellulose, Photocatalyst

References
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Author Information
  • Department of Chemistry, Adama Science and Technology University, Adama, Ethiopia

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    Yilkal Dessie Sintayehu. (2018). Lignocelluloses Modified TiO2 Nanomaterials as Renewable Photocatalyst for Water Splitting. International Journal of Photochemistry and Photobiology, 2(1), 5-11. https://doi.org/10.11648/j.ijpp.20180201.12

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    Yilkal Dessie Sintayehu. Lignocelluloses Modified TiO2 Nanomaterials as Renewable Photocatalyst for Water Splitting. Int. J. Photochem. Photobiol. 2018, 2(1), 5-11. doi: 10.11648/j.ijpp.20180201.12

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    Yilkal Dessie Sintayehu. Lignocelluloses Modified TiO2 Nanomaterials as Renewable Photocatalyst for Water Splitting. Int J Photochem Photobiol. 2018;2(1):5-11. doi: 10.11648/j.ijpp.20180201.12

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  • @article{10.11648/j.ijpp.20180201.12,
      author = {Yilkal Dessie Sintayehu},
      title = {Lignocelluloses Modified TiO2 Nanomaterials as Renewable Photocatalyst for Water Splitting},
      journal = {International Journal of Photochemistry and Photobiology},
      volume = {2},
      number = {1},
      pages = {5-11},
      doi = {10.11648/j.ijpp.20180201.12},
      url = {https://doi.org/10.11648/j.ijpp.20180201.12},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.ijpp.20180201.12},
      abstract = {Photocatalytic water splitting process is a hopeful means to solve depletion and environmental pollution problems caused by fossil fuels as well as for sustainable hydrogen production using renewable natural resources like sunlight and biomass (cotton stalk). In this study the aim was to fabricate cotton stalk extracted Lignocellulose (LGO) Titanium oxide (TiO2) nanoparticles via sol-gel in ethanol and to investigate their photocatalytic water splitting activities under Visible light irradiation. Hence, in this study the opportunity for structural development of lignocellulose (LGO) modified TiO2 nanomaterial towards highly efficient and realistic photocatalysis applications are evidently abundant after improved light absorption, charge-carrier dynamics, and improved particle size porosity that benefits photocatalysis functionalities. LGO-TiO2 nanoparticle, (≈19.57 nm) for photocatalysis was prepared via sol-gel method. The fabricated nanomaterial photoelectrochemical characterization was operated using three electrode system with a photoanode as a working electrode, coiled Pt wire as a counter electrode and Hg/Hg2Cl2 as a reference electrode, and 0.5 M Na2SO4 (with pH buffered at 6.75) purged with N2, solution was applied as a supporting electrolyte. The structural and morphological characterizations of the fabricated nanomaterial are carried out using FTIR, XRD, SEM, and EDX techniques, based upon which the mechanistic insights are discussed. SEM analysis suggests that an average size of particle grain size is found to be in the range of 0.5-4 μm. The photocurrent densities of regular TiO2 and LGO-TiO2 towards water splitting reaction under light illumination from xenon lamp were compared and found in reasonable agreement. The work also studied the application of visible light illuminated LGO-TiO2 photoanode photocatalyst to the overall water splitting with a photoconversion efficiency of 18.91% higher than that of bare TiO2 nanoparticles and this suggests that surface functionality, surface topography, porosity and particle size, as well as purity and chemical composition of the prepared sample was successfully functionalized..},
     year = {2018}
    }
    

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  • TY  - JOUR
    T1  - Lignocelluloses Modified TiO2 Nanomaterials as Renewable Photocatalyst for Water Splitting
    AU  - Yilkal Dessie Sintayehu
    Y1  - 2018/08/28
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    DO  - 10.11648/j.ijpp.20180201.12
    T2  - International Journal of Photochemistry and Photobiology
    JF  - International Journal of Photochemistry and Photobiology
    JO  - International Journal of Photochemistry and Photobiology
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    PB  - Science Publishing Group
    SN  - 2640-429X
    UR  - https://doi.org/10.11648/j.ijpp.20180201.12
    AB  - Photocatalytic water splitting process is a hopeful means to solve depletion and environmental pollution problems caused by fossil fuels as well as for sustainable hydrogen production using renewable natural resources like sunlight and biomass (cotton stalk). In this study the aim was to fabricate cotton stalk extracted Lignocellulose (LGO) Titanium oxide (TiO2) nanoparticles via sol-gel in ethanol and to investigate their photocatalytic water splitting activities under Visible light irradiation. Hence, in this study the opportunity for structural development of lignocellulose (LGO) modified TiO2 nanomaterial towards highly efficient and realistic photocatalysis applications are evidently abundant after improved light absorption, charge-carrier dynamics, and improved particle size porosity that benefits photocatalysis functionalities. LGO-TiO2 nanoparticle, (≈19.57 nm) for photocatalysis was prepared via sol-gel method. The fabricated nanomaterial photoelectrochemical characterization was operated using three electrode system with a photoanode as a working electrode, coiled Pt wire as a counter electrode and Hg/Hg2Cl2 as a reference electrode, and 0.5 M Na2SO4 (with pH buffered at 6.75) purged with N2, solution was applied as a supporting electrolyte. The structural and morphological characterizations of the fabricated nanomaterial are carried out using FTIR, XRD, SEM, and EDX techniques, based upon which the mechanistic insights are discussed. SEM analysis suggests that an average size of particle grain size is found to be in the range of 0.5-4 μm. The photocurrent densities of regular TiO2 and LGO-TiO2 towards water splitting reaction under light illumination from xenon lamp were compared and found in reasonable agreement. The work also studied the application of visible light illuminated LGO-TiO2 photoanode photocatalyst to the overall water splitting with a photoconversion efficiency of 18.91% higher than that of bare TiO2 nanoparticles and this suggests that surface functionality, surface topography, porosity and particle size, as well as purity and chemical composition of the prepared sample was successfully functionalized..
    VL  - 2
    IS  - 1
    ER  - 

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