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Effect of the phase composition of iron oxide nanorods on SO2 gas sensing performance
Materials Research Bulletin ( IF 5.4 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.materresbull.2020.111087 Thanh Vinh Nguyen , Ngoc Anh Luong , Van Toan Nguyen , Anh Tuan Pham , Anh Tuan Le , Thanh Loan To , Van Quy Nguyen
Materials Research Bulletin ( IF 5.4 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.materresbull.2020.111087 Thanh Vinh Nguyen , Ngoc Anh Luong , Van Toan Nguyen , Anh Tuan Pham , Anh Tuan Le , Thanh Loan To , Van Quy Nguyen
Abstract α-FeOOH nanorods were synthesized by a facile precipitation method. γ-Fe2O3 and α-Fe2O3 nanorods were then obtained by calcining for 6 h at 200 and 600 °C in ambient air, respectively. A mass-type sensor was developed based on the different iron oxide phase compositions of α-FeOOH, γ-Fe2O3 and α-Fe2O3 coating a quartz crystal microbalance (QCM). The gas sensing properties of three as-prepared sensors were systematically examined for detecting sulphur dioxide gas (SO2) at room temperature. The effect of phase composition of iron oxide nanorods on sensing properties was also discussed. Although as-prepared iron oxides have a similar morphologic structure, the sensor based on γ-Fe2O3 exposes the highest response to SO2. The sensing results show that the γ-Fe2O3 coated QCM sensors had an extremely good performance for SO2 gas in the 2.5–20 ppm range at room temperature.
中文翻译:
氧化铁纳米棒的相组成对 SO2 气敏性能的影响
摘要 α-FeOOH 纳米棒是通过简便的沉淀法合成的。γ-Fe2O3 和 α-Fe2O3 纳米棒通过分别在 200 和 600°C 的环境空气中煅烧 6 小时获得。基于 α-FeOOH、γ-Fe2O3 和 α-Fe2O3 的不同氧化铁相组成,在石英晶体微天平 (QCM) 上开发了一种质量型传感器。为了在室温下检测二氧化硫气体 (SO2),系统地检查了三个制备好的传感器的气敏特性。还讨论了氧化铁纳米棒的相组成对传感特性的影响。尽管制备的氧化铁具有相似的形态结构,但基于 γ-Fe2O3 的传感器对 SO2 的响应最高。传感结果表明,γ-Fe2O3 涂层 QCM 传感器对 SO2 气体在 2.
更新日期:2021-02-01
中文翻译:
氧化铁纳米棒的相组成对 SO2 气敏性能的影响
摘要 α-FeOOH 纳米棒是通过简便的沉淀法合成的。γ-Fe2O3 和 α-Fe2O3 纳米棒通过分别在 200 和 600°C 的环境空气中煅烧 6 小时获得。基于 α-FeOOH、γ-Fe2O3 和 α-Fe2O3 的不同氧化铁相组成,在石英晶体微天平 (QCM) 上开发了一种质量型传感器。为了在室温下检测二氧化硫气体 (SO2),系统地检查了三个制备好的传感器的气敏特性。还讨论了氧化铁纳米棒的相组成对传感特性的影响。尽管制备的氧化铁具有相似的形态结构,但基于 γ-Fe2O3 的传感器对 SO2 的响应最高。传感结果表明,γ-Fe2O3 涂层 QCM 传感器对 SO2 气体在 2.