Mg/Fe纳米复合材料体系的催化发光性能研究
Study on Cataluminescence Properties of Mg/Fe Nanocomposite System
DOI: 10.12677/AMC.2019.72003, PDF,    科研立项经费支持
作者: 成 栋, 赵田园, 黄飞飞：大连交通大学，环境与化学工程学院，辽宁 大连；张洪铭：大连交通大学，材料科学与工程学院，辽宁 大连；刘名扬：黑龙江海关漠河实验室，黑龙江 漠河
关键词: 催化发光；硫化氢；气体传感器；纳米复合材料；Cataluminescence； Hydrogen Sulfide； Gas-Sensor； Nanocomposite
摘要: 当H2S气体通过纳米MgO-Fe2O3表面时，被O2催化氧化，产生化学发光(CL)。本文合成检测了五种不同配比催化材料，结果表明，当Fe2O3质量占比15%时，催化发光(CTL)强度高于其它不同配比的催化材料。由此，优化开发了一种优异的H2S传感器。此CTL传感器具有高选择性，只有异丙醇引起14.54%的干扰，甲醇、乙醇、丙酮等均不干扰H2S的测定。在温度为230℃，波长为400 nm，载气流速为200 ml/min的最佳实验条件下，催化发光强度与丙酮浓度在5~500 ppm内呈线性关系，检出限为2.8 ppm (S/N = 3)，响应时间：3秒，恢复时间：6秒。
Abstract: When the H2S gas passes through the surface of the nano-MgO-Fe2O3, it is catalytically oxidized by O2 to produce chemiluminescence (CL). In this paper, five different catalytic materials were syn-thesized and tested. The results show that when the mass of Fe2O3 is 15%, the intensity of catalytic luminescence (CTL) is higher than other different proportions of catalytic materials. As a result, an excellent H2S sensor was optimized. The CTL sensor has high selectivity, only 14.54% interference caused by isopropanol, and methanol, ethanol, acetone and the like do not interfere with the de-termination of H2S. Under the optimal experimental conditions of 230˚C, 400 nm, and carrier gas flow rate of 200 ml/min, the catalytic luminescence intensity is linear with acetone concentration within 5 to 500 ppm, and the detection limit is 2.8 ppm (S/N = 3), response time: 3 seconds, recov-ery time: 6 seconds.
文章引用：成栋, 赵田园, 张洪铭, 黄飞飞, 刘名扬. Mg/Fe纳米复合材料体系的催化发光性能研究[J]. 材料化学前沿, 2019, 7(2): 19-27. https://doi.org/10.12677/AMC.2019.72003

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