Sol–Gel Synthesis of Au/Cu-TiO2 Nanocomposite and Their Morphological and Optical Properties
A facile single-step method was adopted to synthesize gold-modified copper-doped titania nanocomposites. Physicochemical properties of the synthesized material were characterized by X-ray diffraction (XRD), diffuse reflectance spectroscopy, photoluminescence (PL), and TEM-based techniques. Our chara...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Institute of Electrical and Electronics Engineers (IEEE)
2021
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| Online Access: | https://hdl.handle.net/1721.1/134483 |
| _version_ | 1826203335207682048 |
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| author | Gondal, MA Rashid, SG Dastageer, MA Zubair, SM Ali, MA Lienhard, John H McKinley, GH Varanasi, KK |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Gondal, MA Rashid, SG Dastageer, MA Zubair, SM Ali, MA Lienhard, John H McKinley, GH Varanasi, KK |
| author_sort | Gondal, MA |
| collection | MIT |
| description | A facile single-step method was adopted to synthesize gold-modified copper-doped titania nanocomposites. Physicochemical properties of the synthesized material were characterized by X-ray diffraction (XRD), diffuse reflectance spectroscopy, photoluminescence (PL), and TEM-based techniques. Our characterizations show that the material consisted of anatase-phase qausi-spherical titania nanoparticles (NPs), with 3-4-nm gold particles anchored on titania surface. According to diffuse UV-visible spectroscopic analysis, gold-modified copper-doped titania shows enhanced absorption in the visible-light spectrum compared with copper-doped titania and pure titania. Furthermore, a decrease in PL emission intensity is observed, and this is due to decreased electron-hole recombination, which is an attribute desired for the enhancement of photocatalytic activity. Our present results highlight that these nanocomposites could be used as a photocatalyst for various applications in conjunction with visible solar radiation. The surface modifications make this material for many applications such as gas sensing and photodetection. © 2009-2012 IEEE. |
| first_indexed | 2024-09-23T12:35:21Z |
| format | Article |
| id | mit-1721.1/134483 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:35:21Z |
| publishDate | 2021 |
| publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| record_format | dspace |
| spelling | mit-1721.1/1344832024-03-15T14:43:56Z Sol–Gel Synthesis of Au/Cu-TiO2 Nanocomposite and Their Morphological and Optical Properties Gondal, MA Rashid, SG Dastageer, MA Zubair, SM Ali, MA Lienhard, John H McKinley, GH Varanasi, KK Massachusetts Institute of Technology. Department of Mechanical Engineering A facile single-step method was adopted to synthesize gold-modified copper-doped titania nanocomposites. Physicochemical properties of the synthesized material were characterized by X-ray diffraction (XRD), diffuse reflectance spectroscopy, photoluminescence (PL), and TEM-based techniques. Our characterizations show that the material consisted of anatase-phase qausi-spherical titania nanoparticles (NPs), with 3-4-nm gold particles anchored on titania surface. According to diffuse UV-visible spectroscopic analysis, gold-modified copper-doped titania shows enhanced absorption in the visible-light spectrum compared with copper-doped titania and pure titania. Furthermore, a decrease in PL emission intensity is observed, and this is due to decreased electron-hole recombination, which is an attribute desired for the enhancement of photocatalytic activity. Our present results highlight that these nanocomposites could be used as a photocatalyst for various applications in conjunction with visible solar radiation. The surface modifications make this material for many applications such as gas sensing and photodetection. © 2009-2012 IEEE. 2021-10-27T20:05:13Z 2021-10-27T20:05:13Z 2013 2020-04-27T18:11:45Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134483 Gondal, M. A., et al. "Sol-Gel Synthesis of Au/Cu-Tio2 Nanocomposite and Their Morphological and Optical Properties." IEEE Photonics Journal 5 3 (2013). en 10.1109/JPHOT.2013.2262674 Photonics ,IEEE Journal Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Institute of Electrical and Electronics Engineers (IEEE) IEEE |
| spellingShingle | Gondal, MA Rashid, SG Dastageer, MA Zubair, SM Ali, MA Lienhard, John H McKinley, GH Varanasi, KK Sol–Gel Synthesis of Au/Cu-TiO2 Nanocomposite and Their Morphological and Optical Properties |
| title | Sol–Gel Synthesis of Au/Cu-TiO2 Nanocomposite and Their Morphological and Optical Properties |
| title_full | Sol–Gel Synthesis of Au/Cu-TiO2 Nanocomposite and Their Morphological and Optical Properties |
| title_fullStr | Sol–Gel Synthesis of Au/Cu-TiO2 Nanocomposite and Their Morphological and Optical Properties |
| title_full_unstemmed | Sol–Gel Synthesis of Au/Cu-TiO2 Nanocomposite and Their Morphological and Optical Properties |
| title_short | Sol–Gel Synthesis of Au/Cu-TiO2 Nanocomposite and Their Morphological and Optical Properties |
| title_sort | sol gel synthesis of au cu tio2 nanocomposite and their morphological and optical properties |
| url | https://hdl.handle.net/1721.1/134483 |
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