One-Step Synthesis of Trirutile Oxides ZnBi2O6-Graphene Oxide with Enhanced Photocatalytic Activity
One-Step Synthesis of Trirutile Oxides ZnBi2O6-Graphene Oxide with Enhanced Photocatalytic Activity
复制标题
一步合成具有增强光催化活性的三金红石氧化物ZnBi2O6-氧化石墨烯
DOI：
10.1166/jnn.2017.12876
复制
发表时间：
2017
影响因子：
--
通讯作者：
Lei Ming
中科院分区：
文献类型：
--
作者：
Wang Hao;Wang Haiyan;Song Xihang;Huang Kai;Liang Ce;Lin Sen;Wang Wenjun;Yuan Qingxin;Xu Kun;Du Yinxiao;Liu Jun;Fan Dongyu;Yang Hujiang;Zhang Ru;Wang Yonggang;Lei Ming
三元结构五价铋酸锌（ZnBi2O6）由于其窄间隙（约1.7 eV）而具有高效的可见光催化活性。为了获得更高的光催化性能，在催化剂中引入氧化石墨烯（GO）。在我的工作中，通过一步水热法成功获得了新型znbi2o6 -石墨烯（ZnBi2O6-GO）纳米复合材料。表征结果表明，氧化石墨烯被成功装入ZnBi2O6中。在光催化实验中，ZnBi2O6-GO复合材料表现出比纯ZnBi2O6更好的光催化活性，当GO含量为2.0 wt%时获得最佳光催化活性。光催化活性增强的主要原因是氧化石墨烯的引入抑制了光生电子-空穴对的复合，提高了对染料的吸收能力。
Trirutile-structured pentavalent zinc bismuthate (ZnBi2O6) has efficient visible light photocatalytic activities owing to its narrow gap (ca. 1.7 eV). To obtain higher photocatalytic performance, graphene oxide (GO) is introduced into this catalyst. In my work, novel ZnBi2O6-graphene (ZnBi2O6-GO) nanocomposites have been successfully obtained via a one-step hydrothermal method. The characterization results showed that GO was successfully loaded in the ZnBi2O6. In the photocatalytic experiment, ZnBi2O6-GO composites exhibited better photocatalytic activities than the pure ZnBi2O6 and the optimal photocatalytic activity was obtained when the GO content was 2.0 wt%. The main reason for enhanced photocatalytic activity is that introduction of GO can restrain the recombination of photo-generated electron–hole pairs and increase the absorption ability for dyes.