SBA-15 ASSISTED SnO2 HUMIDITY SENSOR
Аутори
Savic, SlavicaVojisavljević, Katarina
Počuča-Nešić, Milica
Knezevic, Nikola
Mladenović, Minja
Djokic, Veljko
Branković, Zorica
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Over the past decade, the interest for fabrication of mesoporous metal oxides
has been increased, and that draw attention globally on fabrication and designing
efficient humidity sensors based on these materials. Their unique properties like
high surface area, large pore volume and interconnected pore channels provide
easier adsorption and facile transportation of water molecules across their surfaces.
Nanocasting as technique based on various silica hard templates is one of usually
utilized and efficient methods for processing of such materials.
Silica SBA-15 as a template is currently obtaining exclusive attention in
applications like photocatalysis, sensing, drug delivery and nanomaterials
fabrication since it has high surface area, pore volume, excellent thermal stability
and distinctive interconnectivity of its tunable pore channels. In this work, we used
SBA-15 as a hard template for production of SnO2 humidity sensor. SBA-15
assisted mesoporous SnO2 has been synthesi...zed using incipient wet impregnation
process, consisting of two loading/calcination steps to fill up 15 % of the total pore
volume of template with SnO2, followed by template etching with 2M NaOH.
A few micron thick SnO2 film has been fabricated by applying the paste by the
doctor blade applicator onto alumina substrate provided with interdigitated Pt/Ag
electrodes. The sensor response of the film towards humidity was tested measuring
the change of the complex impedance of the sample exposed to a humid climate
chamber environment with the relative humidity, RH ranging from 40 % to 90 % at
25 °C and from 30 % to 90 % at 50 °C. This study demonstrated that nanocast SnO2
possesses sufficient quality to be used as a material for fabrication of high
performance humidity sensors.
Кључне речи:
Silica SBA-15 / nanocasting / humidity sensor / tin oxide / impedance spectroscopyИзвор:
5th Conference of Serbian Society for Ceramic Materials, 2019, 135-135Издавач:
- Institute for Multidisciplinary Research, University of Belgrade
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200053 (Универзитет у Београду, Институт за мултидисциплинарна истраживања) (RS-MESTD-inst-2020-200053)
Институција/група
Institut za multidisciplinarna istraživanjaTY - CONF AU - Savic, Slavica AU - Vojisavljević, Katarina AU - Počuča-Nešić, Milica AU - Knezevic, Nikola AU - Mladenović, Minja AU - Djokic, Veljko AU - Branković, Zorica PY - 2019 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2312 AB - Over the past decade, the interest for fabrication of mesoporous metal oxides has been increased, and that draw attention globally on fabrication and designing efficient humidity sensors based on these materials. Their unique properties like high surface area, large pore volume and interconnected pore channels provide easier adsorption and facile transportation of water molecules across their surfaces. Nanocasting as technique based on various silica hard templates is one of usually utilized and efficient methods for processing of such materials. Silica SBA-15 as a template is currently obtaining exclusive attention in applications like photocatalysis, sensing, drug delivery and nanomaterials fabrication since it has high surface area, pore volume, excellent thermal stability and distinctive interconnectivity of its tunable pore channels. In this work, we used SBA-15 as a hard template for production of SnO2 humidity sensor. SBA-15 assisted mesoporous SnO2 has been synthesized using incipient wet impregnation process, consisting of two loading/calcination steps to fill up 15 % of the total pore volume of template with SnO2, followed by template etching with 2M NaOH. A few micron thick SnO2 film has been fabricated by applying the paste by the doctor blade applicator onto alumina substrate provided with interdigitated Pt/Ag electrodes. The sensor response of the film towards humidity was tested measuring the change of the complex impedance of the sample exposed to a humid climate chamber environment with the relative humidity, RH ranging from 40 % to 90 % at 25 °C and from 30 % to 90 % at 50 °C. This study demonstrated that nanocast SnO2 possesses sufficient quality to be used as a material for fabrication of high performance humidity sensors. PB - Institute for Multidisciplinary Research, University of Belgrade C3 - 5th Conference of Serbian Society for Ceramic Materials T1 - SBA-15 ASSISTED SnO2 HUMIDITY SENSOR EP - 135 SP - 135 UR - https://hdl.handle.net/21.15107/rcub_rimsi_2312 ER -
@conference{ author = "Savic, Slavica and Vojisavljević, Katarina and Počuča-Nešić, Milica and Knezevic, Nikola and Mladenović, Minja and Djokic, Veljko and Branković, Zorica", year = "2019", abstract = "Over the past decade, the interest for fabrication of mesoporous metal oxides has been increased, and that draw attention globally on fabrication and designing efficient humidity sensors based on these materials. Their unique properties like high surface area, large pore volume and interconnected pore channels provide easier adsorption and facile transportation of water molecules across their surfaces. Nanocasting as technique based on various silica hard templates is one of usually utilized and efficient methods for processing of such materials. Silica SBA-15 as a template is currently obtaining exclusive attention in applications like photocatalysis, sensing, drug delivery and nanomaterials fabrication since it has high surface area, pore volume, excellent thermal stability and distinctive interconnectivity of its tunable pore channels. In this work, we used SBA-15 as a hard template for production of SnO2 humidity sensor. SBA-15 assisted mesoporous SnO2 has been synthesized using incipient wet impregnation process, consisting of two loading/calcination steps to fill up 15 % of the total pore volume of template with SnO2, followed by template etching with 2M NaOH. A few micron thick SnO2 film has been fabricated by applying the paste by the doctor blade applicator onto alumina substrate provided with interdigitated Pt/Ag electrodes. The sensor response of the film towards humidity was tested measuring the change of the complex impedance of the sample exposed to a humid climate chamber environment with the relative humidity, RH ranging from 40 % to 90 % at 25 °C and from 30 % to 90 % at 50 °C. This study demonstrated that nanocast SnO2 possesses sufficient quality to be used as a material for fabrication of high performance humidity sensors.", publisher = "Institute for Multidisciplinary Research, University of Belgrade", journal = "5th Conference of Serbian Society for Ceramic Materials", title = "SBA-15 ASSISTED SnO2 HUMIDITY SENSOR", pages = "135-135", url = "https://hdl.handle.net/21.15107/rcub_rimsi_2312" }
Savic, S., Vojisavljević, K., Počuča-Nešić, M., Knezevic, N., Mladenović, M., Djokic, V.,& Branković, Z.. (2019). SBA-15 ASSISTED SnO2 HUMIDITY SENSOR. in 5th Conference of Serbian Society for Ceramic Materials Institute for Multidisciplinary Research, University of Belgrade., 135-135. https://hdl.handle.net/21.15107/rcub_rimsi_2312
Savic S, Vojisavljević K, Počuča-Nešić M, Knezevic N, Mladenović M, Djokic V, Branković Z. SBA-15 ASSISTED SnO2 HUMIDITY SENSOR. in 5th Conference of Serbian Society for Ceramic Materials. 2019;:135-135. https://hdl.handle.net/21.15107/rcub_rimsi_2312 .
Savic, Slavica, Vojisavljević, Katarina, Počuča-Nešić, Milica, Knezevic, Nikola, Mladenović, Minja, Djokic, Veljko, Branković, Zorica, "SBA-15 ASSISTED SnO2 HUMIDITY SENSOR" in 5th Conference of Serbian Society for Ceramic Materials (2019):135-135, https://hdl.handle.net/21.15107/rcub_rimsi_2312 .