摘要
利用溶剂热法,把Bi2WO6纳米颗粒植入g-C3N4层间和表面成功地制备了Bi2WO6/g-C3N4复合型光催化剂。通过XRD、SEM、TEM、BET和UV-Vis分别对样品的结构、组成、形貌、比表面积、光学性能进行了表征。结果表明,g-C3N4层状结构被部分剥离成碎片且与Bi2WO6纳米颗粒形成了复合物。Bi2WO6/g-C3N4复合型光催化剂与单一Bi2WO6相比不仅扩展了可见光的响应范围、增大了比表面还加速了光生电子与空穴的分离。结果表明,Bi2WO6的最佳负载量为60wt%时,复合型光催化剂具有最高的可见光催化活性且性能稳定、易回收。
The Bi2WO6/g-C3N4 composite photocatalysts were successfully synthesized by implanting Bi2WO6 nanoparticles into the interlayer and surface of g-C3N4 using a solvothermal method. The prepared samples were characterized by XRD, SEM, TEM, UV-Vis, BET and photogradation of RhB for comprehensive structural, morphological, specific surface area and visible-light properties. This results show the interlayer structure of g- C3N4 was partially peeled and formed Bi2WO6/g-C3N4 photocatalyst. The 60 wt% Bi2WO6/g-C3N4 photocatalysts possess enhanced photocatalytic activity than the single phase BizWO6 and g-C3N4 under visible light, which can be ascribe to its wide visible light reponse, large surface area and high quantum efficiency. In addition, the BiEWO6/g-CaN4 composite is not only highly stable but also easy to be collected.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2013年第10期2057-2064,共8页
Chinese Journal of Inorganic Chemistry
基金
四川理工学院人才引进(No.2012RC05)资助项目
