RGO/WO3 hierarchical architectures for improved H2S sensing and highly efficient solar-driving photo-degradation of RhB dye
Abstract Surface area and surface active sites are two important key parameters in enhancing the gas sensing as well as photocatalytic properties of the parent material. With this motivation, herein, we report a facile synthesis of Reduced Graphene Oxide/Tungsten Oxide RGO/WO3 hierarchical nanostruc...
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doaj-aa99b7baf65f4c4d923213cebb0560952021-03-11T12:21:57ZengNature Publishing GroupScientific Reports2045-23222021-03-0111111710.1038/s41598-021-84416-1RGO/WO3 hierarchical architectures for improved H2S sensing and highly efficient solar-driving photo-degradation of RhB dyeSwati S. Mehta0Digambar Y. Nadargi1Mohaseen S. Tamboli2Thamraa Alshahrani3Vasudeva Reddy Minnam Reddy4Eui Seon Kim5Imtiaz S. Mulla6Chinho Park7Sharad S. Suryavanshi8School of Physical Sciences, PAH Solapur UniversitySchool of Physical Sciences, PAH Solapur UniversitySchool of Chemical Engineering, Yeungnam UniversityDepartment of Physics, College of Science, Princess Nourah Bint Abdulrahman UniversitySchool of Chemical Engineering, Yeungnam UniversitySchool of Chemical Engineering, Yeungnam UniversityFormer Emeritus Scientist (CSIR), Centre for Materials for Electronics TechnologySchool of Chemical Engineering, Yeungnam UniversitySchool of Physical Sciences, PAH Solapur UniversityAbstract Surface area and surface active sites are two important key parameters in enhancing the gas sensing as well as photocatalytic properties of the parent material. With this motivation, herein, we report a facile synthesis of Reduced Graphene Oxide/Tungsten Oxide RGO/WO3 hierarchical nanostructures via simple hydrothermal route, and their validation in accomplishment of improved H2S sensing and highly efficient solar driven photo-degradation of RhB Dye. The self-made RGO using modified Hummer’s method, is utilized to develop the RGO/WO3 nanocomposites with 0.15, 0.3 and 0.5 wt% of RGO in WO3 matrix. As-developed nanocomposites were analyzed using various physicochemical techniques such as XRD, FE-SEM, TEM/HRTEM, and EDAX. The creation of hierarchic marigold frameworks culminated in a well affiliated mesoporous system, offering efficient gas delivery networks, leading to a significant increase in sensing response to H2S. The optimized sensor (RGO/WO3 with 0.3 wt% loading) exhibited selective response towards H2S, which is ~ 13 times higher (Ra/Rg = 22.9) than pristine WO3 (Ra/Rg = 1.78) sensor. Looking at bi-directional application, graphene platform boosted the photocatalytic activity (94% degradation of Rhodamine B dye in 210 min) under natural sunlight. The RGO’s role in increasing the active surface and surface area is clarified by the H2S gas response analysis and solar-driven photo-degradation of RhB dye solution. The outcome of this study provides the new insights to RGO/WO3 based nanocomposites’ research spreadsheet, in view of multidisciplinary applications.https://doi.org/10.1038/s41598-021-84416-1 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Swati S. Mehta Digambar Y. Nadargi Mohaseen S. Tamboli Thamraa Alshahrani Vasudeva Reddy Minnam Reddy Eui Seon Kim Imtiaz S. Mulla Chinho Park Sharad S. Suryavanshi |
spellingShingle |
Swati S. Mehta Digambar Y. Nadargi Mohaseen S. Tamboli Thamraa Alshahrani Vasudeva Reddy Minnam Reddy Eui Seon Kim Imtiaz S. Mulla Chinho Park Sharad S. Suryavanshi RGO/WO3 hierarchical architectures for improved H2S sensing and highly efficient solar-driving photo-degradation of RhB dye Scientific Reports |
author_facet |
Swati S. Mehta Digambar Y. Nadargi Mohaseen S. Tamboli Thamraa Alshahrani Vasudeva Reddy Minnam Reddy Eui Seon Kim Imtiaz S. Mulla Chinho Park Sharad S. Suryavanshi |
author_sort |
Swati S. Mehta |
title |
RGO/WO3 hierarchical architectures for improved H2S sensing and highly efficient solar-driving photo-degradation of RhB dye |
title_short |
RGO/WO3 hierarchical architectures for improved H2S sensing and highly efficient solar-driving photo-degradation of RhB dye |
title_full |
RGO/WO3 hierarchical architectures for improved H2S sensing and highly efficient solar-driving photo-degradation of RhB dye |
title_fullStr |
RGO/WO3 hierarchical architectures for improved H2S sensing and highly efficient solar-driving photo-degradation of RhB dye |
title_full_unstemmed |
RGO/WO3 hierarchical architectures for improved H2S sensing and highly efficient solar-driving photo-degradation of RhB dye |
title_sort |
rgo/wo3 hierarchical architectures for improved h2s sensing and highly efficient solar-driving photo-degradation of rhb dye |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2021-03-01 |
description |
Abstract Surface area and surface active sites are two important key parameters in enhancing the gas sensing as well as photocatalytic properties of the parent material. With this motivation, herein, we report a facile synthesis of Reduced Graphene Oxide/Tungsten Oxide RGO/WO3 hierarchical nanostructures via simple hydrothermal route, and their validation in accomplishment of improved H2S sensing and highly efficient solar driven photo-degradation of RhB Dye. The self-made RGO using modified Hummer’s method, is utilized to develop the RGO/WO3 nanocomposites with 0.15, 0.3 and 0.5 wt% of RGO in WO3 matrix. As-developed nanocomposites were analyzed using various physicochemical techniques such as XRD, FE-SEM, TEM/HRTEM, and EDAX. The creation of hierarchic marigold frameworks culminated in a well affiliated mesoporous system, offering efficient gas delivery networks, leading to a significant increase in sensing response to H2S. The optimized sensor (RGO/WO3 with 0.3 wt% loading) exhibited selective response towards H2S, which is ~ 13 times higher (Ra/Rg = 22.9) than pristine WO3 (Ra/Rg = 1.78) sensor. Looking at bi-directional application, graphene platform boosted the photocatalytic activity (94% degradation of Rhodamine B dye in 210 min) under natural sunlight. The RGO’s role in increasing the active surface and surface area is clarified by the H2S gas response analysis and solar-driven photo-degradation of RhB dye solution. The outcome of this study provides the new insights to RGO/WO3 based nanocomposites’ research spreadsheet, in view of multidisciplinary applications. |
url |
https://doi.org/10.1038/s41598-021-84416-1 |
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