首页|碳载PtCu催化剂的制备及对甲醇的电催化氧化性能研究

碳载PtCu催化剂的制备及对甲醇的电催化氧化性能研究

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以L-抗坏血酸(VC)为还原剂通过微波辅助法在乙二醇(EG)体系中制备了不同原子比的碳载PtCu纳米催化剂,运用循环伏安法、计时电流法、X射线粉末衍射仪(XRD)、场发射扫描电子显微镜(FESEM)等方法和手段,对催化剂在酸性甲醇溶液中的电催化活性、稳定性、结构和形貌进行了研究.电化学测试结果表明,在pH=5时进行还原的Pt、Cu原子比为1:1的PtCu/C催化剂活性最高,稳定性最好.表征后发现该催化剂粒径最小,比表面积最大,并且分布均匀,与测试结果一致,即对甲醇的氧化具有优异的电催化性能.在降低铂基催化剂成本和提高催化剂活性方面具有一定的价值.
Preparation of carbon supported PtCu catalyst and its electrocatalytic oxidation of methanol
Carbon supported PtCu nanocatalysts with different atomic ratios were synthesized by microwaveassisted method in ethylene glycol system(EG)using L-ascorbic acid(VC)as a reductant.The prepared catalysts were used to electrocatalysis methanol under a-cidic conditions.The electrocatalytic activity and stability were studied by cyclic voltammetry and chronoamperometry techniques.These catalysts were characterized by X-ray powder diffractometer and field emission scanning electron microscope.The electrochemical test results show that the catalyst reduced at pH=5 has the highest activity and the best stability when the atomic ratio of Pt:Cu=1:l.It was found that the catalyst has the smallest particle size,the largest specific surface area and a uniform distribution,which is consistent with the test results,indicating excellent electrocatalytic oxidation activity for methanol.It has wide value in reducing the cost and im-proving catalyst activity of platinum-based catalysts.

Fuel cellethylene glycolL-ascorbic acidmethanolelectrocatalytic oxidationcarbon supported PtCu catalyst

赵洪波、白晓波、郎德龙

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绥化学院食品与制药工程学院黑龙江省环境催化与储能材料重点实验室,黑龙江绥化 152061

燃料电池 乙二醇 VC 甲醇 电催化氧化 碳载PtCu催化剂

黑龙江省省属高等学校基本科研业务费基础研究项目绥化学院科研启动基金(2021)黑龙江省自然科学基金绥化学院科研创新团队基金(第五批)

YWF10236220228SQ21005LH2020B016SIT05001

2024

10.14078/j.cnki.1001-3741.2024.02.005

炭素技术
中钢集团吉林炭素股份有限公司

炭素技术

CSTPCD北大核心
影响因子：0.296
ISSN：1001-3741
年,卷(期)：2024.43(2)
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