Sulfonic acid/sulfur trioxide (SO3H/SO3) functionalized two-dimensional MoS2 nanosheets for high-performance photocatalysis of organic pollutants

Vivek Kumar Singh; Prachi Jain; Subrata Panda; Biplab Kumar Kuila; Sudhagar Pitchaimuthu; Santanu Das

doi:10.1039/d2nj02222b

Sulfonic acid/sulfur trioxide (SO₃H/SO₃) functionalized two-dimensional MoS₂ nanosheets for high-performance photocatalysis of organic pollutants

Vivek Kumar Singh, Prachi Jain, Subrata Panda, Biplab Kumar Kuila, Sudhagar Pitchaimuthu, Santanu Das^*

^*Corresponding author for this work

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

13 Citations (Scopus)

Abstract

We report the enhanced photocatalytic activity of sulfonic acid/sulfur trioxide (SO₃H/SO₃) functionalized two-dimensional (2D)-MoS₂ (SO₃H/SO₃-MoS₂) nanosheets synthesized using a one-pot hydrothermal method. The functionalization causes the expansion of MoS₂ interlayers and widening of the bandgap while keeping the basal plane intact, thereby improving the catalytically active surface sites and low charge recombination rates. The photocatalytic activity of SO₃H/SO₃-MoS₂ was evaluated by calculating the rate constant of ∼0.06728 min⁻¹ while the dye degradation time was obtained as ∼50 min (10 ppm), which was faster compared to those of the bulk MoS₂ and pristine 2D-MoS₂ nanosheets under identical conditions. The enhancement in the photocatalytic rate-kinetics of SO₃H/SO₃-MoS₂ was accomplished owing to the widening of the bandgap, the expanded 2D-MoS₂ interlayers, the improved surface adsorption/desorption, and the enhanced redox properties as a result of the faster charge-transfer.

Original language	English
Pages (from-to)	13636-13642
Number of pages	7
Journal	New Journal of Chemistry
Volume	46
Issue number	28
Early online date	14 Jun 2022
DOIs	https://doi.org/10.1039/d2nj02222b
Publication status	Published - 28 Jul 2022

ASJC Scopus subject areas

Catalysis
General Chemistry
Materials Chemistry

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title = "Sulfonic acid/sulfur trioxide (SO3H/SO3) functionalized two-dimensional MoS2 nanosheets for high-performance photocatalysis of organic pollutants",

abstract = "We report the enhanced photocatalytic activity of sulfonic acid/sulfur trioxide (SO3H/SO3) functionalized two-dimensional (2D)-MoS2 (SO3H/SO3-MoS2) nanosheets synthesized using a one-pot hydrothermal method. The functionalization causes the expansion of MoS2 interlayers and widening of the bandgap while keeping the basal plane intact, thereby improving the catalytically active surface sites and low charge recombination rates. The photocatalytic activity of SO3H/SO3-MoS2 was evaluated by calculating the rate constant of ∼0.06728 min−1 while the dye degradation time was obtained as ∼50 min (10 ppm), which was faster compared to those of the bulk MoS2 and pristine 2D-MoS2 nanosheets under identical conditions. The enhancement in the photocatalytic rate-kinetics of SO3H/SO3-MoS2 was accomplished owing to the widening of the bandgap, the expanded 2D-MoS2 interlayers, the improved surface adsorption/desorption, and the enhanced redox properties as a result of the faster charge-transfer.",

author = "Singh, {Vivek Kumar} and Prachi Jain and Subrata Panda and Kuila, {Biplab Kumar} and Sudhagar Pitchaimuthu and Santanu Das",

note = "Funding Information: S. D. and S. P. acknowledge the EPSRC Impact Accelerator Grant (Grant#IAA-RIF-2020) at Swansea University, UK, for supporting this work. S. D. gratefully acknowledges the MoE-STARs Project from Govt. of India (grant no: STARS/APR2019/NS/428/FS) for providing partial financial support for this work. S. D. and V. K. S. gratefully acknowledge the funding support from the Department of Science and Technology, Government of India (Fellowship no: DST/INSPIRE Fellowship/2017/IF170977) for this work. All the authors are highly thankful to Mr Shyam Sunder Rao and Head, Department of Chemical Engineering, IIT(BHU), Varanasi, for extending some of their materials characterizing facilities for this work. Publisher Copyright: {\textcopyright} 2022 The Royal Society of Chemistry.",

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AU - Jain, Prachi

AU - Panda, Subrata

AU - Kuila, Biplab Kumar

AU - Pitchaimuthu, Sudhagar

AU - Das, Santanu

N1 - Funding Information: S. D. and S. P. acknowledge the EPSRC Impact Accelerator Grant (Grant#IAA-RIF-2020) at Swansea University, UK, for supporting this work. S. D. gratefully acknowledges the MoE-STARs Project from Govt. of India (grant no: STARS/APR2019/NS/428/FS) for providing partial financial support for this work. S. D. and V. K. S. gratefully acknowledge the funding support from the Department of Science and Technology, Government of India (Fellowship no: DST/INSPIRE Fellowship/2017/IF170977) for this work. All the authors are highly thankful to Mr Shyam Sunder Rao and Head, Department of Chemical Engineering, IIT(BHU), Varanasi, for extending some of their materials characterizing facilities for this work. Publisher Copyright: © 2022 The Royal Society of Chemistry.

PY - 2022/7/28

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N2 - We report the enhanced photocatalytic activity of sulfonic acid/sulfur trioxide (SO3H/SO3) functionalized two-dimensional (2D)-MoS2 (SO3H/SO3-MoS2) nanosheets synthesized using a one-pot hydrothermal method. The functionalization causes the expansion of MoS2 interlayers and widening of the bandgap while keeping the basal plane intact, thereby improving the catalytically active surface sites and low charge recombination rates. The photocatalytic activity of SO3H/SO3-MoS2 was evaluated by calculating the rate constant of ∼0.06728 min−1 while the dye degradation time was obtained as ∼50 min (10 ppm), which was faster compared to those of the bulk MoS2 and pristine 2D-MoS2 nanosheets under identical conditions. The enhancement in the photocatalytic rate-kinetics of SO3H/SO3-MoS2 was accomplished owing to the widening of the bandgap, the expanded 2D-MoS2 interlayers, the improved surface adsorption/desorption, and the enhanced redox properties as a result of the faster charge-transfer.

AB - We report the enhanced photocatalytic activity of sulfonic acid/sulfur trioxide (SO3H/SO3) functionalized two-dimensional (2D)-MoS2 (SO3H/SO3-MoS2) nanosheets synthesized using a one-pot hydrothermal method. The functionalization causes the expansion of MoS2 interlayers and widening of the bandgap while keeping the basal plane intact, thereby improving the catalytically active surface sites and low charge recombination rates. The photocatalytic activity of SO3H/SO3-MoS2 was evaluated by calculating the rate constant of ∼0.06728 min−1 while the dye degradation time was obtained as ∼50 min (10 ppm), which was faster compared to those of the bulk MoS2 and pristine 2D-MoS2 nanosheets under identical conditions. The enhancement in the photocatalytic rate-kinetics of SO3H/SO3-MoS2 was accomplished owing to the widening of the bandgap, the expanded 2D-MoS2 interlayers, the improved surface adsorption/desorption, and the enhanced redox properties as a result of the faster charge-transfer.

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U2 - 10.1039/d2nj02222b

DO - 10.1039/d2nj02222b

M3 - Article

AN - SCOPUS:85132943218

SN - 1144-0546

VL - 46

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JO - New Journal of Chemistry

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IS - 28

ER -

Sulfonic acid/sulfur trioxide (SO₃H/SO₃) functionalized two-dimensional MoS₂ nanosheets for high-performance photocatalysis of organic pollutants

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