以硝酸铋、钨酸铵为起始原料,采用水热法合成介孔Bi2WO6光催化剂,借助X射线粉末衍射(XRD)、固体紫外-可见吸收光谱(UV-Vis)、电子扫描电镜(FE-SEM)和透射电镜(TEM)对催化剂的物相组成、形貌和光吸收特性进行表征,并推测三维球状介孔Bi2WO6的形成机理;研究溶液pH值和环境水体中常见无机离子对Bi2WO6光催化降解亚甲基蓝的影响.结果表明:在强酸条件下,Bi2WO6表现出更高的光催化活性;环境水体中的无机离子对亚甲基蓝的光催化降解影响显著,阳离子如Fe3+,NH4+以及阴离子如卤素离子对其光催化降解具有很强的促进作用,Cu2+和NO2-几乎无影响,而Fe2+对其则具有明显抑制作用.
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