采用水热/溶剂热法,以Zn(Ac)2·2H2O和CH4N2S为反应物合成ZnS微球.对ZnS微球进行X射线衍射(XRD)、扫描电镜(SEM)及紫外可见漫反射光谱等表征.结果表明,合成的ZnS微球为立方闪锌矿型晶体结构,由ZnS纳米粒子自组装而成.在降解苯酚水溶液的光催化研究中,以乙二醇-水为溶剂合成的ZnS光催化活性明显优于其他溶剂体系合成的ZnS,循环使用3次仍保持较高的活性.ZnS微球光催化性能的提高可归结为以下三方面的协同作用:较小的禁带宽度(3.39 eV)有利于吸收光子,较完整的晶体结构使催化剂活性分子数增多和较大的比表面积(19.4 m2/g)有利于反应液与催化剂的充分接触.ZnS微球降解苯酚的中间产物为乙二酸、顺丁烯二酸和极少量的对苯二酚.
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