High Efficiency Photoelectrocatalytic Methanol Oxidation on CdS Quantum Dots Sensitized Pt Electrode.
High Efficiency Photoelectrocatalytic Methanol Oxidation on CdS Quantum Dots Sensitized Pt Electrode.
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DOI：
10.1021/acsami.5b10234
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发表时间：
2016-02
影响因子：
9.5
通讯作者：
Chunyang Zhai;Mingshan Zhu;Fenzhi Pang;Duan Bin;Cheng Lu;M. Goh;Ping Yang;Yukou Du
中科院分区：
文献类型：
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作者：
Chunyang Zhai;Mingshan Zhu;Fenzhi Pang;Duan Bin;Cheng Lu;M. Goh;Ping Yang;Yukou Du
采用溶剂热法合成了硫化镉量子点敏化铂(PtCDS)复合材料，并用透射电子显微镜(TEM)、X射线衍射仪(XRD)、X射线光电子能谱(XPS)和紫外-可见漫反射光谱(UV-Vis)对其进行了表征。通过循环伏安(CV)、计时电流法、电化学阻抗谱(EIS)和光电流响应等方法研究了该电极对甲醇氧化的催化性能。所制备的铂-硫化镉电极在可见光照射下对甲醇氧化表现出明显的电催化活性和稳定性。电催化反应和光催化反应的协同效应有助于提高催化性能。我们的结果为利用可见光照明构建高性能和良好稳定性的直接甲醇燃料电池光电催化剂提供了一种新的范式。
A cadmium sulfide quantum dots sensitized Pt (Pt-CdS) composite was synthesized using a solvothermal method and characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectroscopy. The catalytic properties of the as-prepared electrode for methanol oxidation were evaluated by cyclic voltammetry (CV), chronoamperometry, electrochemical impedance spectrum (EIS) and photocurrent responses. The as-prepared Pt-CdS electrode displayed a significant enhancement in the electrocatalytic activity and stability for methanol oxidation in the presence of visible light irradiation. The synergistic effect of both the electro- and photocatalytic reaction contributes to this enhanced catalytic performance. Our result suggests a new paradigm to construct photoelectrocatalysts with high performance and good stability for direct methanol fuel cells with the assistance of visible-light illumination.