Impact of reducing agents on the ammonia sensing performance of silver decorated reduced graphene oxide: Experiment and first principles calculations

Sivalingam Muthu Mariappan; Mathan Kumar Eswaran; Udo Schwingenschlögl; Tharmar Thangeeswari; Elangovan Vinoth; Mohd Shkir; Zafar Said; Balasubramanian Karthikeyan

doi:10.1016/j.apsusc.2021.149886

Impact of reducing agents on the ammonia sensing performance of silver decorated reduced graphene oxide: Experiment and first principles calculations

Sivalingam Muthu Mariappan, Mathan Kumar Eswaran, Udo Schwingenschlögl, Tharmar Thangeeswari, Elangovan Vinoth, Mohd Shkir, Zafar Said, Balasubramanian Karthikeyan

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11 Scopus citations

Abstract

We investigate economic room temperature sensors for toxic ammonia molecules (NH3) based on reduced graphene oxide decorated with silver nanoparticles (Ag:rGO) to provide a systematic understanding of the role played by the employed reducing agent. To this aim, we perform a comparative study of the sensing performance for a set of reducing agents, using a combination of experimental and theoretical methods. Specifically, Ag:rGO prepared with the reducing agents glucose, vitamin C, and sodium borohydride (NaBH4) is studied experimentally by the chemi-resistive method and is modelled theoretically by first-principles calculations. NaBH4 turns out to be an effective reducing agent due to favourable charge transfer kinetics by band bending.

Original language	English (US)
Pages (from-to)	149886
Journal	Applied Surface Science
Volume	558
DOIs	https://doi.org/10.1016/j.apsusc.2021.149886
State	Published - Apr 25 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-06-15
Acknowledgements: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through general research project under Grant No. G.R.P/21/42.

ASJC Scopus subject areas

Surfaces, Coatings and Films

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10.1016/j.apsusc.2021.149886

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@article{5580b4e22c2a48a39a55a8e022835841,

title = "Impact of reducing agents on the ammonia sensing performance of silver decorated reduced graphene oxide: Experiment and first principles calculations",

abstract = "We investigate economic room temperature sensors for toxic ammonia molecules (NH3) based on reduced graphene oxide decorated with silver nanoparticles (Ag:rGO) to provide a systematic understanding of the role played by the employed reducing agent. To this aim, we perform a comparative study of the sensing performance for a set of reducing agents, using a combination of experimental and theoretical methods. Specifically, Ag:rGO prepared with the reducing agents glucose, vitamin C, and sodium borohydride (NaBH4) is studied experimentally by the chemi-resistive method and is modelled theoretically by first-principles calculations. NaBH4 turns out to be an effective reducing agent due to favourable charge transfer kinetics by band bending.",

author = "Mariappan, {Sivalingam Muthu} and Eswaran, {Mathan Kumar} and Udo Schwingenschl{\"o}gl and Tharmar Thangeeswari and Elangovan Vinoth and Mohd Shkir and Zafar Said and Balasubramanian Karthikeyan",

note = "KAUST Repository Item: Exported on 2021-06-15 Acknowledgements: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through general research project under Grant No. G.R.P/21/42.",

year = "2021",

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doi = "10.1016/j.apsusc.2021.149886",

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AU - Mariappan, Sivalingam Muthu

AU - Eswaran, Mathan Kumar

AU - Schwingenschlögl, Udo

AU - Thangeeswari, Tharmar

AU - Vinoth, Elangovan

AU - Shkir, Mohd

AU - Said, Zafar

AU - Karthikeyan, Balasubramanian

N1 - KAUST Repository Item: Exported on 2021-06-15 Acknowledgements: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through general research project under Grant No. G.R.P/21/42.

PY - 2021/4/25

Y1 - 2021/4/25

N2 - We investigate economic room temperature sensors for toxic ammonia molecules (NH3) based on reduced graphene oxide decorated with silver nanoparticles (Ag:rGO) to provide a systematic understanding of the role played by the employed reducing agent. To this aim, we perform a comparative study of the sensing performance for a set of reducing agents, using a combination of experimental and theoretical methods. Specifically, Ag:rGO prepared with the reducing agents glucose, vitamin C, and sodium borohydride (NaBH4) is studied experimentally by the chemi-resistive method and is modelled theoretically by first-principles calculations. NaBH4 turns out to be an effective reducing agent due to favourable charge transfer kinetics by band bending.

AB - We investigate economic room temperature sensors for toxic ammonia molecules (NH3) based on reduced graphene oxide decorated with silver nanoparticles (Ag:rGO) to provide a systematic understanding of the role played by the employed reducing agent. To this aim, we perform a comparative study of the sensing performance for a set of reducing agents, using a combination of experimental and theoretical methods. Specifically, Ag:rGO prepared with the reducing agents glucose, vitamin C, and sodium borohydride (NaBH4) is studied experimentally by the chemi-resistive method and is modelled theoretically by first-principles calculations. NaBH4 turns out to be an effective reducing agent due to favourable charge transfer kinetics by band bending.

UR - http://hdl.handle.net/10754/669574

UR - https://linkinghub.elsevier.com/retrieve/pii/S0169433221009624

UR - http://www.scopus.com/inward/record.url?scp=85107132458&partnerID=8YFLogxK

U2 - 10.1016/j.apsusc.2021.149886

DO - 10.1016/j.apsusc.2021.149886

M3 - Article

SN - 0169-4332

VL - 558

SP - 149886

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Impact of reducing agents on the ammonia sensing performance of silver decorated reduced graphene oxide: Experiment and first principles calculations

Abstract

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