Low temperature hydrogen sensing using reduced graphene oxide and tin oxide nanoflowers based hybrid structure

A. Venkatesan; Servin Rathi; In Yeal Lee; Jinwoo Park; Dongsuk Lim; Gil Ho Kim; E. S. Kannan

doi:10.1088/0268-1242/31/12/125014

Low temperature hydrogen sensing using reduced graphene oxide and tin oxide nanoflowers based hybrid structure

A. Venkatesan
, Servin Rathi
, In Yeal Lee
, Jinwoo Park
, Dongsuk Lim
, Gil Ho Kim
, E. S. Kannan

Birla Institute of Technology and Science Pilani
Sungkyunkwan University

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

29 Scopus citations

Abstract

In this paper, we have demonstrated a low temperature hydrogen (H₂) sensor based on reduced graphene oxide (rGO) and tin oxide nanoflowers (SnO₂ NFs) hybrid composite film. The addition of SnO₂ NFs into rGO solution inhibits irreversible restacking and agglomeration of rGO and increases the active surface area for interaction with H₂. This rGO-SnO₂ NFs hybrid film sensor showed an excellent response to H₂ at 60 °C at 200 ppm with an improvement of 126% compared to pure rGO which was used as a control sample. The sensor also showed good response and recovery time in comparison to pure rGO film. The highly improved H₂ sensing characteristics of rGO-SnO₂ NFs hybrid are due to its (a) unique structural geometry that increased the surface area for H₂ adsorption, and (b) change in the width of depletion layer at the interface due to H₂ interaction.

Original language	English
Article number	125014
Journal	Semiconductor Science and Technology
Volume	31
Issue number	12
DOIs	https://doi.org/10.1088/0268-1242/31/12/125014
State	Published - 11 Nov 2016
Externally published	Yes

Keywords

composite
nanorods
reduced graphene oxide
sensors
tin oxide

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10.1088/0268-1242/31/12/125014

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title = "Low temperature hydrogen sensing using reduced graphene oxide and tin oxide nanoflowers based hybrid structure",

abstract = "In this paper, we have demonstrated a low temperature hydrogen (H2) sensor based on reduced graphene oxide (rGO) and tin oxide nanoflowers (SnO2 NFs) hybrid composite film. The addition of SnO2 NFs into rGO solution inhibits irreversible restacking and agglomeration of rGO and increases the active surface area for interaction with H2. This rGO-SnO2 NFs hybrid film sensor showed an excellent response to H2 at 60 °C at 200 ppm with an improvement of 126\% compared to pure rGO which was used as a control sample. The sensor also showed good response and recovery time in comparison to pure rGO film. The highly improved H2 sensing characteristics of rGO-SnO2 NFs hybrid are due to its (a) unique structural geometry that increased the surface area for H2 adsorption, and (b) change in the width of depletion layer at the interface due to H2 interaction.",

keywords = "composite, nanorods, reduced graphene oxide, sensors, tin oxide",

author = "A. Venkatesan and Servin Rathi and Lee, \{In Yeal\} and Jinwoo Park and Dongsuk Lim and Kim, \{Gil Ho\} and Kannan, \{E. S.\}",

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year = "2016",

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day = "11",

doi = "10.1088/0268-1242/31/12/125014",

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T1 - Low temperature hydrogen sensing using reduced graphene oxide and tin oxide nanoflowers based hybrid structure

AU - Venkatesan, A.

AU - Rathi, Servin

AU - Lee, In Yeal

AU - Park, Jinwoo

AU - Lim, Dongsuk

AU - Kim, Gil Ho

AU - Kannan, E. S.

PY - 2016/11/11

Y1 - 2016/11/11

N2 - In this paper, we have demonstrated a low temperature hydrogen (H2) sensor based on reduced graphene oxide (rGO) and tin oxide nanoflowers (SnO2 NFs) hybrid composite film. The addition of SnO2 NFs into rGO solution inhibits irreversible restacking and agglomeration of rGO and increases the active surface area for interaction with H2. This rGO-SnO2 NFs hybrid film sensor showed an excellent response to H2 at 60 °C at 200 ppm with an improvement of 126% compared to pure rGO which was used as a control sample. The sensor also showed good response and recovery time in comparison to pure rGO film. The highly improved H2 sensing characteristics of rGO-SnO2 NFs hybrid are due to its (a) unique structural geometry that increased the surface area for H2 adsorption, and (b) change in the width of depletion layer at the interface due to H2 interaction.

AB - In this paper, we have demonstrated a low temperature hydrogen (H2) sensor based on reduced graphene oxide (rGO) and tin oxide nanoflowers (SnO2 NFs) hybrid composite film. The addition of SnO2 NFs into rGO solution inhibits irreversible restacking and agglomeration of rGO and increases the active surface area for interaction with H2. This rGO-SnO2 NFs hybrid film sensor showed an excellent response to H2 at 60 °C at 200 ppm with an improvement of 126% compared to pure rGO which was used as a control sample. The sensor also showed good response and recovery time in comparison to pure rGO film. The highly improved H2 sensing characteristics of rGO-SnO2 NFs hybrid are due to its (a) unique structural geometry that increased the surface area for H2 adsorption, and (b) change in the width of depletion layer at the interface due to H2 interaction.

KW - composite

KW - nanorods

KW - reduced graphene oxide

KW - sensors

KW - tin oxide

UR - https://www.scopus.com/pages/publications/84997514390

U2 - 10.1088/0268-1242/31/12/125014

DO - 10.1088/0268-1242/31/12/125014

M3 - Article

AN - SCOPUS:84997514390

SN - 0268-1242

VL - 31

JO - Semiconductor Science and Technology

JF - Semiconductor Science and Technology

IS - 12

M1 - 125014

ER -

Low temperature hydrogen sensing using reduced graphene oxide and tin oxide nanoflowers based hybrid structure

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Keywords

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