Promoting the humidity sensing capabilities of titania nanorods/rGO nanocomposite via de-bundling and maximizing porosity and surface area through lyophilization
Herein, the preparation of titania nanorods with reduced graphene oxide nanocomposite is introduced using a combination of the simple hydrothermal process and co-precipitation followed by freeze-drying. The preceding nanocomposite is functioned as a humidity sensor to detect the surrounding moisture...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Micro and Nano Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590007222000600 |
| _version_ | 1818082918655852544 |
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| author | Mohamed Morsy Ahmed I. Abdel-Salam Moataz Mostafa Amir Elzwawy |
| author_facet | Mohamed Morsy Ahmed I. Abdel-Salam Moataz Mostafa Amir Elzwawy |
| author_sort | Mohamed Morsy |
| collection | DOAJ |
| description | Herein, the preparation of titania nanorods with reduced graphene oxide nanocomposite is introduced using a combination of the simple hydrothermal process and co-precipitation followed by freeze-drying. The preceding nanocomposite is functioned as a humidity sensor to detect the surrounding moisture levels. The XRD results reveal the confirmed incorporation of titania nanotubes onto the reduced graphene oxide sheets. The STEM and HRTEM consequences support the XRD structural results. Raman and FTIR bands reveal the disappearing significance of D and G bands for reduced graphene oxide. BET assessment study demonstrates the resultant maximized pores size accompanied by raised overall exposed surface area. The humidity sensing measurements within a broad spectrum of surrounding humidity (11%–97%) disclose a decent response and recovery times of 40 s and 166 s consecutively. Successful exposure to freeze-drying promotes the stabilized and enlarged surface area accompanied by the hindering of the realized hydrophobicity of the titania which opposes the humidity sensing application. The simple route of humidity sensing for this nanocomposite delivers a superior message to the humidity sensing applications over a wide range of areas. |
| first_indexed | 2024-12-10T19:29:44Z |
| format | Article |
| id | doaj.art-c3eeb3521cad4cc1a0750ee1c182d7ba |
| institution | Directory Open Access Journal |
| issn | 2590-0072 |
| language | English |
| last_indexed | 2024-12-10T19:29:44Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Micro and Nano Engineering |
| spelling | doaj.art-c3eeb3521cad4cc1a0750ee1c182d7ba2022-12-22T01:36:17ZengElsevierMicro and Nano Engineering2590-00722022-11-0117100163Promoting the humidity sensing capabilities of titania nanorods/rGO nanocomposite via de-bundling and maximizing porosity and surface area through lyophilizationMohamed Morsy0Ahmed I. Abdel-Salam1Moataz Mostafa2Amir Elzwawy3Building Physics and Environment Institute, Housing & Building National Research Center (HBRC), 12311 Dokki, Giza, Egypt; Nanotechnology Research Centre (NTRC), The British University in Egypt (BUE), Suez Desert Road, El-Sherouk City, Cairo 11837, Egypt; Corresponding author at: Building Physics and Environment Institute, Housing & Building National Research Center (HBRC), 12311 Dokki, Giza, Egypt.Nanotechnology Research Centre (NTRC), The British University in Egypt (BUE), Suez Desert Road, El-Sherouk City, Cairo 11837, EgyptNanotechnology Research Centre (NTRC), The British University in Egypt (BUE), Suez Desert Road, El-Sherouk City, Cairo 11837, EgyptCeramics Department, National Research Centre (NRC), 33 El-Bohouth St., Dokki, Cairo 12622, Egypt; Corresponding author.Herein, the preparation of titania nanorods with reduced graphene oxide nanocomposite is introduced using a combination of the simple hydrothermal process and co-precipitation followed by freeze-drying. The preceding nanocomposite is functioned as a humidity sensor to detect the surrounding moisture levels. The XRD results reveal the confirmed incorporation of titania nanotubes onto the reduced graphene oxide sheets. The STEM and HRTEM consequences support the XRD structural results. Raman and FTIR bands reveal the disappearing significance of D and G bands for reduced graphene oxide. BET assessment study demonstrates the resultant maximized pores size accompanied by raised overall exposed surface area. The humidity sensing measurements within a broad spectrum of surrounding humidity (11%–97%) disclose a decent response and recovery times of 40 s and 166 s consecutively. Successful exposure to freeze-drying promotes the stabilized and enlarged surface area accompanied by the hindering of the realized hydrophobicity of the titania which opposes the humidity sensing application. The simple route of humidity sensing for this nanocomposite delivers a superior message to the humidity sensing applications over a wide range of areas.http://www.sciencedirect.com/science/article/pii/S2590007222000600Graphene oxideNanocompositesHumidity sensorsTitania nanorodsFreeze-drying |
| spellingShingle | Mohamed Morsy Ahmed I. Abdel-Salam Moataz Mostafa Amir Elzwawy Promoting the humidity sensing capabilities of titania nanorods/rGO nanocomposite via de-bundling and maximizing porosity and surface area through lyophilization Micro and Nano Engineering Graphene oxide Nanocomposites Humidity sensors Titania nanorods Freeze-drying |
| title | Promoting the humidity sensing capabilities of titania nanorods/rGO nanocomposite via de-bundling and maximizing porosity and surface area through lyophilization |
| title_full | Promoting the humidity sensing capabilities of titania nanorods/rGO nanocomposite via de-bundling and maximizing porosity and surface area through lyophilization |
| title_fullStr | Promoting the humidity sensing capabilities of titania nanorods/rGO nanocomposite via de-bundling and maximizing porosity and surface area through lyophilization |
| title_full_unstemmed | Promoting the humidity sensing capabilities of titania nanorods/rGO nanocomposite via de-bundling and maximizing porosity and surface area through lyophilization |
| title_short | Promoting the humidity sensing capabilities of titania nanorods/rGO nanocomposite via de-bundling and maximizing porosity and surface area through lyophilization |
| title_sort | promoting the humidity sensing capabilities of titania nanorods rgo nanocomposite via de bundling and maximizing porosity and surface area through lyophilization |
| topic | Graphene oxide Nanocomposites Humidity sensors Titania nanorods Freeze-drying |
| url | http://www.sciencedirect.com/science/article/pii/S2590007222000600 |
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