将非晶结构Fe-W合金浸泡在0.5 mol/L H2SO4溶液中,在电极表面形成WO3层,厚度约720 nm.通过化学法在半导体WO3上沉积金属Pd,扫描电镜和扫描隧道显微镜测试结果表明,沉积5 min后Pd的平均颗粒尺寸约为10 nm.在0.5 mol/L H2SO4溶液中的极化曲线测试结果表明,纳米Pd修饰WO3电极具有优异的电催化及光催化析氢活性,在500 W碘钨灯照射下,电流密度为6 A/dm2时电极的析氢过电位减小30 mV以上.
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