TY - JOUR
T1 - Impact of reducing agents on the ammonia sensing performance of silver decorated reduced graphene oxide: Experiment and first principles calculations
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 -