微流控合成高活性甲醇氧化碳载铂钌电催化剂

doi:10.11944/j.issn.1000-0518.2018.05.170150

摘要/Abstract

摘要：

报道了一种以微流控技术制备对甲醇具有高效电氧化催化活性的碳载PtRu催化剂(PtRu/C)的方法。通过改变反应液在微流控反应器中的流速,得到了一系列纳米粒径分布在1.4~2.0 nm范围内的PtRu/C催化剂。对这些催化剂进行电化学测试发现,当反应液以90 μL/min的流速流经微流控反应器时制得的催化剂具有最高催化活性。进一步研究发现,这是由于在该流速制得的催化剂具有较大的电化学活性面积和较高含量的Pt(0)。该种制备催化剂的方法在能源转化和环境领域有望被广泛使用。

关键词: 微流控, 甲醇, 催化剂

Abstract:

In this work, a microfluidic approach was reported for the synthesis of carbon-supported PtRu nanoparticles(PtRu/C) for high efficient methanol electro-oxidation. By varying the flow rate of reactants in the simple custom-made microfluidic reactor, a series of PtRu/C catalysts was obtained with size ranging from 1.4 to 2.0 nm. Electrochemical measurements show that the superior activity of catalyst obtained with flow rate of 90 μL/min for methanol electro-oxidation could be attributed to its large electrochemically active surface area(ECSA) and the high content of metallic Pt(0). This method for the preparation of catalyst holds great promise for potential applications in important energy conversion and environmental fields.

Key words: microfluidic, methanol, catalyst

孙墨杰, 吕涛, 徐维林. 微流控合成高活性甲醇氧化碳载铂钌电催化剂[J]. 应用化学, 2018, 35(5): 564-573.

SUN Mojie, LÜ Tao, XU Weilin. Microfluidic Synthesis of High-activity PtRu/C Catalyst for Methanol Electro-oxidation[J]. Chinese Journal of Applied Chemistry, 2018, 35(5): 564-573.

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