Pt/Ru-Modified ZnO Sensor Grown In Situ for Detection of ppb H2S
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| Publicado en: | Sensors vol. 25, no. 7 (2025), p. 1995 |
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| Autor Principal: | |
| Outros autores: | , , |
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MDPI AG
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| Acceso en liña: | Citation/Abstract Full Text + Graphics Full Text - PDF |
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| 001 | 3188899629 | ||
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| 022 | |a 1424-8220 | ||
| 024 | 7 | |a 10.3390/s25071995 |2 doi | |
| 035 | |a 3188899629 | ||
| 045 | 2 | |b d20250101 |b d20251231 | |
| 084 | |a 231630 |2 nlm | ||
| 100 | 1 | |a Zhang, Jianhua | |
| 245 | 1 | |a Pt/Ru-Modified ZnO Sensor Grown In Situ for Detection of ppb H<sub>2</sub>S | |
| 260 | |b MDPI AG |c 2025 | ||
| 513 | |a Journal Article | ||
| 520 | 3 | |a This paper presents a ZnO-Pt/Ru sensor prepared by a two-step hydrothermal method with in situ-grown ZnO nanorods and doped with Pt and Ru elements by immersion sintering. Characterization results showed that Pt and Ru were successfully modified on the surface of ZnO nanorods. ZnO-Pt/Ru achieved a response of 25–50 ppm H2S at the optimum operating temperature of 198 °C. In addition, the lower limit of H2S detection of ZnO-Pt/Ru reached 50 ppb with a response of about 10%, indicating a wide concentration detection range. Due to the good catalytic properties of Pt, the recovery characteristics of ZnO at high concentrations of H2S were significantly improved. The response time of ZnO-Pt/Ru (30 s) was also significantly shorter than pristine ZnO (56 s), with excellent selectivity. As far as the gas-sensitive enhancement mechanism is concerned, at the macroscopic level, the ZnO surface was modified by Pt and Ru, and this special structure of ZnO-Pt/Ru significantly increased the specific surface area. At the microscopic level, the PN junction formed between Pt/Ru and ZnO provided abundant holes for electron migration. | |
| 610 | 4 | |a JEOL Ltd | |
| 651 | 4 | |a United States--US | |
| 651 | 4 | |a Shanghai China | |
| 651 | 4 | |a China | |
| 651 | 4 | |a Japan | |
| 653 | |a Metals | ||
| 653 | |a Transmission electron microscopy | ||
| 653 | |a Nanowires | ||
| 653 | |a Gases | ||
| 653 | |a Spectrum analysis | ||
| 653 | |a Glass substrates | ||
| 653 | |a Nanoparticles | ||
| 653 | |a Computer terminals | ||
| 653 | |a Alumina | ||
| 653 | |a Sensors | ||
| 653 | |a Methods | ||
| 653 | |a Chromatography | ||
| 653 | |a Morphology | ||
| 653 | |a Radiation | ||
| 653 | |a Scanning electron microscopy | ||
| 653 | |a Composite materials | ||
| 653 | |a Ethanol | ||
| 700 | 1 | |a Shi, Yunbo | |
| 700 | 1 | |a Tang, Bolun | |
| 700 | 1 | |a Zheng, Canda | |
| 773 | 0 | |t Sensors |g vol. 25, no. 7 (2025), p. 1995 | |
| 786 | 0 | |d ProQuest |t Health & Medical Collection | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/3188899629/abstract/embedded/L8HZQI7Z43R0LA5T?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text + Graphics |u https://www.proquest.com/docview/3188899629/fulltextwithgraphics/embedded/L8HZQI7Z43R0LA5T?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text - PDF |u https://www.proquest.com/docview/3188899629/fulltextPDF/embedded/L8HZQI7Z43R0LA5T?source=fedsrch |