采用水热法在不同条件下制得3种不同形貌的纳米偏锡酸锌(ZnSnO3).通过XRD、SEM等分别对偏锡酸锌的晶体结构、微观形貌等进行表征,结果表明:160℃、15h水热条件下制得了全立方形纳米偏锡酸锌;180℃、15 h水热条件下制得的纳米偏锡酸锌为立方-松枝混合形貌;而180℃、24 h水热条件下得到偏锡酸锌全为片状,片厚约15nm.采用传统旁热式结构对上述3种纳米偏锡酸锌进行HCHO的敏感性能研究,结果发现3种形貌的偏锡酸锌对甲醛都表现出良好的气敏特性,其中片状偏锡酸锌的甲醛气敏特性最优异,工作温度300℃时对1×10-6甲醛有较好的响应.
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