Eco-friendly rice husk derived biochar as a highly efficient noble Metal-Free cocatalyst for high production of H2 using solar light irradiation

Palagiri Bhavani; D. Praveen Kumar; Murid Hussain; Tejraj M. Aminabhavi; Young Kwon Park

doi:10.1016/j.cej.2022.134743

Eco-friendly rice husk derived biochar as a highly efficient noble Metal-Free cocatalyst for high production of H₂ using solar light irradiation

Palagiri Bhavani, D. Praveen Kumar, Murid Hussain, Tejraj M. Aminabhavi, Young Kwon Park

School of Environmental Engineering

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

34 Scopus citations

Abstract

Eco-friendly, low-cost, and highly efficient noble metal-free rice husk (RH) biomass-derived biochar (BC) was developed as an efficient cocatalyst to improve the performance of zinc indium sulfide (ZnIn₂S₄) for the photocatalytic H₂ production. The ZnIn₂S₄ and BC were synthesized using simple hydrothermal and pyrolysis methods, respectively. The ZnIn₂S₄ was converted into few-layered ZnIn₂S₄ nanosheets (ZIS) after the incorporation on BC using ultra-sonication process. The optimized nanocomposite exhibited superior H₂ production (4,466 μmol h⁻¹ g⁻¹) compared to pristine ZIS under the simulated light irradiation. The stability of catalyst was confirmed by long-term (30 h) photo-experiment and recycling studies. Enhanced activity was the result of efficient interfacial contacts between the materials in addition to high surface area, high conductivity with carbon content, porous structure of BC, and ultrathin-layered structure of ZIS nanosheets. The effective photo-induced charge carrier separation, improved long-life shuttling, and subsequent acceleration has led to enhanced visible light absorption for enhanced H₂ production.

Original language	English
Article number	134743
Journal	Chemical Engineering Journal
Volume	434
DOIs	https://doi.org/10.1016/j.cej.2022.134743
State	Published - 15 Apr 2022

Keywords

Biochar
H production
Nanosheets
Photocatalysis
ZnInS

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10.1016/j.cej.2022.134743

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@article{464669f61d8e43419f56f8db0077e881,

title = "Eco-friendly rice husk derived biochar as a highly efficient noble Metal-Free cocatalyst for high production of H2 using solar light irradiation",

abstract = "Eco-friendly, low-cost, and highly efficient noble metal-free rice husk (RH) biomass-derived biochar (BC) was developed as an efficient cocatalyst to improve the performance of zinc indium sulfide (ZnIn2S4) for the photocatalytic H2 production. The ZnIn2S4 and BC were synthesized using simple hydrothermal and pyrolysis methods, respectively. The ZnIn2S4 was converted into few-layered ZnIn2S4 nanosheets (ZIS) after the incorporation on BC using ultra-sonication process. The optimized nanocomposite exhibited superior H2 production (4,466 μmol h−1 g−1) compared to pristine ZIS under the simulated light irradiation. The stability of catalyst was confirmed by long-term (30 h) photo-experiment and recycling studies. Enhanced activity was the result of efficient interfacial contacts between the materials in addition to high surface area, high conductivity with carbon content, porous structure of BC, and ultrathin-layered structure of ZIS nanosheets. The effective photo-induced charge carrier separation, improved long-life shuttling, and subsequent acceleration has led to enhanced visible light absorption for enhanced H2 production.",

keywords = "Biochar, H production, Nanosheets, Photocatalysis, ZnInS",

author = "Palagiri Bhavani and {Praveen Kumar}, D. and Murid Hussain and Aminabhavi, {Tejraj M.} and Park, {Young Kwon}",

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year = "2022",

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doi = "10.1016/j.cej.2022.134743",

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T1 - Eco-friendly rice husk derived biochar as a highly efficient noble Metal-Free cocatalyst for high production of H2 using solar light irradiation

AU - Bhavani, Palagiri

AU - Praveen Kumar, D.

AU - Hussain, Murid

AU - Aminabhavi, Tejraj M.

AU - Park, Young Kwon

PY - 2022/4/15

Y1 - 2022/4/15

N2 - Eco-friendly, low-cost, and highly efficient noble metal-free rice husk (RH) biomass-derived biochar (BC) was developed as an efficient cocatalyst to improve the performance of zinc indium sulfide (ZnIn2S4) for the photocatalytic H2 production. The ZnIn2S4 and BC were synthesized using simple hydrothermal and pyrolysis methods, respectively. The ZnIn2S4 was converted into few-layered ZnIn2S4 nanosheets (ZIS) after the incorporation on BC using ultra-sonication process. The optimized nanocomposite exhibited superior H2 production (4,466 μmol h−1 g−1) compared to pristine ZIS under the simulated light irradiation. The stability of catalyst was confirmed by long-term (30 h) photo-experiment and recycling studies. Enhanced activity was the result of efficient interfacial contacts between the materials in addition to high surface area, high conductivity with carbon content, porous structure of BC, and ultrathin-layered structure of ZIS nanosheets. The effective photo-induced charge carrier separation, improved long-life shuttling, and subsequent acceleration has led to enhanced visible light absorption for enhanced H2 production.

AB - Eco-friendly, low-cost, and highly efficient noble metal-free rice husk (RH) biomass-derived biochar (BC) was developed as an efficient cocatalyst to improve the performance of zinc indium sulfide (ZnIn2S4) for the photocatalytic H2 production. The ZnIn2S4 and BC were synthesized using simple hydrothermal and pyrolysis methods, respectively. The ZnIn2S4 was converted into few-layered ZnIn2S4 nanosheets (ZIS) after the incorporation on BC using ultra-sonication process. The optimized nanocomposite exhibited superior H2 production (4,466 μmol h−1 g−1) compared to pristine ZIS under the simulated light irradiation. The stability of catalyst was confirmed by long-term (30 h) photo-experiment and recycling studies. Enhanced activity was the result of efficient interfacial contacts between the materials in addition to high surface area, high conductivity with carbon content, porous structure of BC, and ultrathin-layered structure of ZIS nanosheets. The effective photo-induced charge carrier separation, improved long-life shuttling, and subsequent acceleration has led to enhanced visible light absorption for enhanced H2 production.

KW - Biochar

KW - H production

KW - Nanosheets

KW - Photocatalysis

KW - ZnInS

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Eco-friendly rice husk derived biochar as a highly efficient noble Metal-Free cocatalyst for high production of H₂ using solar light irradiation

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