Sensing Enhancement of Gold Nanoparticles Doped-TiO2 Thin Films as H2S Gas Sensor

IF 0.4 Q4 NANOSCIENCE & NANOTECHNOLOGY
Mazin M. Alalousi, Jamal M. Rzaij, I. Ibrahim, A. Ramizy, M. H. Eisa
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引用次数: 1

Abstract

Titanium dioxide and gold nanoparticles were synthesized using an environmentally friendly method to deposit undoped and Au-doped TiO2 thin films on silicon and glass substrates via the spray pyrolysis technique. The effect of the Au nanoparticles concentrations on structural, morphological, and hydrogen sulfide (H2S) gas sensing characteristics of TiO2 thin films were investigated. An X-ray diffraction pattern confirmed the polycrystalline structure of the films deposited on glass and Si substrates with a dominant rutile phase and the formation of additional mixed-phases of Ti-Au bonding. According to a Field Emission-Scanning Electron Microscopy investigation, the cluster size ranged from 20 to 180 nm depending on the concentration of AuNPs. The sensing response of the prepared films was tested against H2S at different operating temperatures. The effect of growing a mixture of titanium-gold phases as a suitable catalyst for hydrogen sulfide sensitivity is also discussed.
纳米金掺杂tio2薄膜作为H2S气体传感器的传感增强研究
采用喷雾热解技术在硅基片和玻璃基片上沉积未掺杂和掺金的TiO2薄膜,采用环境友好的方法合成二氧化钛和金纳米颗粒。研究了金纳米粒子浓度对TiO2薄膜结构、形态和硫化氢气敏特性的影响。x射线衍射图证实了沉积在玻璃和Si衬底上的薄膜的多晶结构,主要是金红石相,并形成了Ti-Au键合的混合相。根据场发射扫描电子显微镜的研究,根据AuNPs的浓度,簇的大小从20到180 nm不等。在不同的工作温度下,测试了所制备薄膜对H2S的传感响应。本文还讨论了培养钛金混合相催化剂对硫化氢敏感性的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Nano Hybrids and Composites
Nano Hybrids and Composites NANOSCIENCE & NANOTECHNOLOGY-
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