摘要
以TiN纳米粉体和RuCl3为前驱体,采用浸渍热分解法合成了Ru0.1Ti0.9O2纳米粉体,并以其为载体利用固相反应制备了Pt/Ru0.1Ti0.9O2催化剂.通过X射线衍射和透射电镜观察到RuO2和TiO2之间形成了金红石相的固溶体,Pt被均匀地担载于Ru0.1Ti0.9O2表面.在0.5mol/LH2SO4溶液中的极化曲线测试发现担载Pt与Ru0.1Ti0.9O2具有协同作用,因而具有优异的析氢、析氧电催化性能.质子交换膜燃料电池测试初步表明,Pt/Ru0.1Ti0.9O2具有高的氧阴极还原反应催化活性,进一步的反极实验证明其具有比Pt/C更高的稳定性.
Ru0.1Ti0.9O2 nanopowder was synthesized from TiN nanoparticles and RuCl3 precursors by the impregnation-thermal decomposition method. A supported Pt/Ru0.1Ti0.9O2 electrocatalyst was prepared using this as the support by solid phase synthesis. X-ray diffraction and transmission electron microscopy results indicate that RuO2 and TiO2 formed a binary solid solution with rutile phase. Pt nanoparticles were deposited uniformly on the surface of the solid solution. Pt/Ru0.1Ti0.9O2 showed good electrocatalytic properties as characterized by hydrogen and oxygen evolution in the polarization curves measured in 0.5 mol/L H2SO4. This was due to a synergistic effect between Pt and Ru0.1Ti0.9O2. Pt/Ru0.1Ti0.9O2 also showed high electrocatalytic activity in oxygen reduction as a proton exchange member fuel cell cathodic catalyst. Pt/Ru0.1Ti0.9O2 showed much better stability than Pt/C in an anti-polarization experiment.
出处
《催化学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第3期179-181,共3页
基金
山东省自然科学基金(Y2008B25)
关键词
氮化钛
氧化钌
氧化钛
浸渍热分解
燃料电池
水电解
催化剂载体
导电氧化物
titanium nitride
ruthenium oxide
titania
impregnation-thermal decomposition
fuel cell
water electrolysis
catalyst support
conductive oxide
