Fabrication and Electrocatalytic Activity of Hierarchically Nanoporous Pd–HSiO1.5/Ni–Co Composite Electrode for Hydrogen Evolution
Fabrication and Electrocatalytic Activity of Hierarchically Nanoporous Pd–HSiO1.5/Ni–Co Composite Electrode for Hydrogen Evolution
复制标题
多级纳米孔Pd-HSiO1.5/Ni-Co复合电极的制备及其析氢电催化活性
DOI：
10.1166/nnl.2017.2408
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发表时间：
2017-06
影响因子：
--
通讯作者：
Jianxiong Xu
中科院分区：
文献类型：
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作者：
Na Li;Yahui Feng;Jingjing Du;Changyun Li;Shaowen Xie;Jianxiong Xu
采用溶解模板法制备了Pd-HSiO 1.5纳米多孔粒子。通过透射电镜（TEM）、氮气吸附溶出曲线、Barrett-Joyner-Halenda（BJH）孔径分布曲线和傅立叶变换红外光谱（FTIR）对颗粒进行了分析。以多级纳米孔Pd-HSiO 1.5为复合纳米粒子，采用复合电沉积法制备了多级纳米孔Pd-HSiO 1.5/Ni-Co复合电极。研究了Ni-Co合金电极和Pd-HSiO 1.5/Ni-Co纳米多孔复合电极的析氢电催化活性。结果表明，纳米级多孔硅氢化合物颗粒的比表面积和孔容分别为896 m2/g和1.30 cm 3/g，空心球尺寸约为70 nm，球壳厚度约为10 nm。此外，贵金属钯被成功地负载在分级纳米多孔硅氢化合物的内部和表面。内部Pd纳米粒子的尺寸约为3 nm，表面Pd纳米粒子的尺寸为10-30 nm。分级纳米孔Pd-HSiO 1.5/Ni-Co复合电极的析氢电催化性能上级Ni-Co合金电极，当分级纳米孔Pd-HSiO 1.5颗粒浓度为1.8 g/L时，Pd-HSiO 1.5/Ni-Co复合电极的析氢电催化活性达到最佳值。
Hierarchically nanoporous Pd–HSiO1.5 particles were prepared by dissolving template method. The particles were analyzed by transmission electron microscope (TEM), nitrogen adsorption stripping curves, Barrett-Joyner-Halenda (BJH) pore size distribution curves and Fourier Transform Infrared (FTIR). Hierarchically nanoporous Pd–HSiO1.5/Ni–Co composite electrodes were fabricated by the method of composite eletrodeposition using hierarchically nanoporous Pd–HSiO1.5 particles as composite nanoparticles. The electrocatalytic activities for hydrogen evolution of the Ni–Co alloy electrodes and hierarchically nanoporous Pd–HSiO1.5/Ni–Co composite electrodes were studied. Results showed that the specific surface area and pore volume of nano-hierarchical porous silicon hydrogen compound particles were 896 m2/g and 1.30 cm3/g respectively, the size of the hollow spheres was about 70 nm, and the thickness of the spherical shell was about 10 nm. In addition, the precious metal Pd was successfully loaded on the inside and surface of the hierarchically nanoporous silicon hydrogen compound. The size of the inside Pd nanoparticles was about 3 nm, and the size of superficial Pd nanoparticles was 10–30 nm. The electrocatalytic hydrogen evolution performance of hierarchically nanoporous Pd–HSiO1.5/Ni–Co composite electrodes was superior than that of Ni–Co alloy electrode, and the electrocatalytic activities of Pd–HSiO1.5/Ni–Co composite electrodes for hydrogen evolution reached the optimal value when the concentration of hierarchically nanoporous Pd–HSiO1.5 particles was 1.8 g/L.