以钨酸钠为原料,硫酸胍为辅助剂,在强酸性反应体系通过水热法合成了氧化钨纳米纤维.利用XRD、SEM、TEM、EDS等对产物进行了表征.结果表明:当体系中钨酸钠与硫酸胍的摩尔比为6∶1时,在反应温度为170℃和反应时间48 h的条件下获得六方晶系的氧化钨纳米纤维,纤维的平均直径为30 nm,长度为1～3 μm.采用循环伏安法对样品的电催化性能进行分析,以硫酸胍为辅助剂获得的六方相氧化钨(hex-WO3)对氢具有很强的电催化还原活性,在燃料电池等领域具有潜在的应用价值.
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