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High performance of a carbon monoxide sensor based on a Pd-doped graphene-tin oxide nanostructure composite
Debataraja A.a,b, Septiani N.L.W.b, Yuliarto B.b, Nugrahab, Sunendar B.b, Abdullah H.c
a Department of Electrical Engineering, State Polytechnic of Jakarta, Jakarta, Indonesia
b Advanced Functional Materials Laboratory, Department of Engineering Physics, Institut Teknologi Bandung, Bandung, 40132, Indonesia
c Centre of Advanced Electronic and Communication Engineering (PAKET), Universiti Kebangsaan Malaysia, Bangi, 43600, Malaysia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2019, Springer-Verlag GmbH Germany, part of Springer Nature.The polyol method has been employed to fabricate a palladium-doped graphene-tin oxide composite as a highly sensitive and selective carbon monoxide gas sensor. The ratio of graphene-SnO2 which is used in this research is 1:1, while the concentration of Pd doping is varied at 0.1%, 0.5%, and 1%. X-ray diffractometry (XRD), scanning electron microscope (SEM), and transmission electron microscope (TEM) have been used to analyze crystallinity and morphology of all samples. Thick-film Pd-doped graphene-SnO2 has been fabricated using the spin-coating method on an alumina substrate. Investigation of the effect of Pd doping on a 30-ppm CO sensor shows increasing response from 88.11 to 92.99% after adding 0.1% Pd at a working temperature of 150 °C. At 50 °C, responses of the composite graphene-SnO2 with 0.1%, 0.5%, and 1% Pd are 19.32%, 32.00%, and 24%, respectively. While at 250 °C, sensor responses of graphene-SnO2 composites with 0.1%, 0.5%, and 1% Pd are 99.89%, 92.93%, and 75.06%, respectively. Among the samples, the 0.1% Pd-doped graphene-SnO2 composite shows the highest response; as a result, 0.1% Pd becomes the optimum concentration of Pd doping. Moreover, the 0.1% Pd-doped graphene-SnO2 composite shows good sensor sensitivity at 1.73%/ppm and great selectivity toward CO gas.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Alumina substrates,Carbon monoxide gas sensors,Optimum concentration,Oxide composites,Oxide nanostructures,Sensor sensitivity,Spin-coating method,Working temperatures[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Carbon monoxide,Gas sensor,Graphene,Nanostructure,Palladium noble metal,Tin oxide[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]Funding information This work is financially supported by the ITB research grant, the research grant of Ministry of Research, Technology and Higher Educations, and the World Class Professor (WCP) program.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1007/s11581-019-02967-w[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]