Synthesis and Electrocatalytic Performance of BDD-Supported Platinum Nanoparticles

Synthesis and Electrocatalytic Performance of BDD-Supported Platinum Nanoparticles
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BDD负载铂纳米粒子的合成及电催化性能

DOI:
10.1007/s11665-014-1317-9
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发表时间:
2015-02
影响因子:
2.3
通讯作者:
张伟强
张伟强
中科院分区:
材料科学4区
文献类型:
--
作者:
吕逍;胡敬平;John S Foord;娄长胜;张伟强

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采用化学镀法在掺硼金刚石基体上沉积了铂纳米颗粒。这种沉积的机制是一个电流过程沿着化学过程。从AFM和SEM图像中观察到铂颗粒为纳米级,直径约为30-50 nm,高度约为3 nm。Pt纳米颗粒的电化学活性通过在0.5 M H2SO 4中的氢解吸过程的循环伏安图来评估。与电化学沉积产生的铂相比,沉积的铂在硫酸中的后续循环中表现出很高的稳定性,并且在1至400 μM范围内对H2 O2检测表现出高选择性。
Platinum nanoparticles were deposited on boron-doped diamond substrate by electroless method without pre-activation. The mechanism of this deposition is a galvanic process along with a chemical process. Platinum particles are in nanoscale with diameter around 30-50 nm and height of around 3 nm observed from AFM and SEM images. The electrochemical activity of Pt nanoparticles was evaluated by cyclic voltammograms of hydrogen desorption process in 0.5 M H2SO4. The deposited platinum shows great stability in subsequent cycling in sulfuric acid and exhibits a high selectivity toward H2O2detection in the range of 1 to 400 μM compared with those produced by electrochemical deposition.
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