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首页> 外文期刊>Environmental Science & Technology >A CL Mode Detector for Rapid Catalyst Selection and Environmental Detection Fabricated by Perovskite Nanoparticles
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A CL Mode Detector for Rapid Catalyst Selection and Environmental Detection Fabricated by Perovskite Nanoparticles

机译：钙钛矿纳米粒子制备的CL模式检测器，用于催化剂的快速选择和环境检测

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摘要

La_(1-x)Sr_xMnO_3 (x = 0, 0.2, 0.5, 0.8) nanoparticles were synthesized and their chemiluminescence (CL) and catalytic properties of CO oxidation were determined. We mainly investigated the influences of filter band length, flow rate of gas, test temperature, catalyst compositions, and particle size on CL intensities and catalytic activities of the catalysts. The catalysts were characterized by means of XRD, TEM, N_2 adsorption isotherm, CO-TPD, and O_2-TPD, etc. It was found that the strong CL response signals occurred overthese perovskites nanoparticles; and that CL properties of the catalysts were well correlated with the reaction activities. These nanoparticles can be used to fabricate a stable gas detector due to a high activity and stability of perovskite structure. CL mode could be a rapid and effective method for the selection of new catalysts from thousands of materials, as well as for the detection of environmental deleterious gases.
机译：合成了La_（1-x）Sr_xMnO_3（x = 0、0.2、0.5、0.8）纳米粒子，并测定了其化学发光（CL）和CO氧化的催化性能。我们主要研究了滤带长度，气体流速，测试温度，催化剂组成和粒径对催化剂的CL强度和催化活性的影响。通过XRD，TEM，N_2吸附等温线，CO-TPD和O_2-TPD等方法对催化剂进行了表征。催化剂的CL性能与反应活性密切相关。由于钙钛矿结构的高活性和稳定性，这些纳米颗粒可用于制造稳定的气体检测器。 CL模式可能是一种快速有效的方法，用于从数千种材料中选择新催化剂，以及检测环境有害气体。

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