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以Na2WO4、K2SO4和H2C2O4为原料,采用两步水热合成法制备了六方相WO3纳米带。首先,在探索pH值、K2SO4加入量、反应温度和时间以及表面活性剂等因素对WO3纳米带的前驱物钨酸盐形貌的影响后,给出了前驱物钨酸盐纳米带的合成条件,并讨论了纳米带的形成机理;然后,在180℃的水热条件下对前驱物再处理48 h获得六方相WO3纳米带。测试结果表明,WO3纳米带的形貌保持较好,宽度在100~300 nm间,长度可达数微米,沿纳米带长轴方向为[001]方向。
Using Na2WO4, K2SO4 and H2C2O4 as raw materials, a six-phase WO3 nanoribbon was prepared by a two-step hydrothermal synthesis method. First of all, the influence of the factors such as pH value, amount of K2SO4, reaction temperature and time, surfactant on the morphology of the precursor tungstate in WO3 nanoribbons was investigated. The conditions for synthesis of precursor tungstate nanoribbons The formation mechanism of the nanoribbons was discussed. Then, the precursors were treated with hydrothermal treatment at 180 ℃ for 48 h to obtain the hexagonal WO3 nanoribbons. The results show that the morphology of the WO3 nanoribbons remains well, with a width of 100-300 nm and a length of up to several micrometers, along the long axis of the nanoribbons in the [001] direction.