CAJ | 학술논문

介绍了一种利用声化学方法，通过改变前驱体的浓度来制备Bi2S3@TiO2(B)纳米异质体的方法。通过透射电子显微镜、XRD衍射、紫外-可见漫反射光谱等表征手段发现，Bi2S3纳米颗粒成功合成在TiO2(B)纳米线上，合成的产物可看做是Bi2S3@TiO2(B)纳米异质体。通过对Bi2S3(8%)@TiO2纳米异质体的( Ep)2和Ep作图发现，复合材料的带宽大约是1.64 eV。这个结果说明，在可见光下，Bi2S3@TiO2(B)纳米异质体拥有较好的光催化性能，并且兼顾了Bi2S3和TiO2各自的优势，实验证实该材料是一种较好的光催化剂，在催化领域具有潜在的应用价值。
개소료일충이용성화학방법，통과개변전구체적농도래제비Bi2S3@TiO2(B)납미이질체적방법。통과투사전자현미경、XRD연사、자외-가견만반사광보등표정수단발현，Bi2S3납미과립성공합성재TiO2(B)납미선상，합성적산물가간주시Bi2S3@TiO2(B)납미이질체。통과대Bi2S3(8%)@TiO2납미이질체적( Ep)2화Ep작도발현，복합재료적대관대약시1.64 eV。저개결과설명，재가견광하，Bi2S3@TiO2(B)납미이질체옹유교호적광최화성능，병차겸고료Bi2S3화TiO2각자적우세，실험증실해재료시일충교호적광최화제，재최화영역구유잠재적응용개치。
The controlled Bi2S3@TiO2(B) nano-heterostructures with the precursors at different concentrations were synthesized by a so-nochemical route. The morphology, crystal structure and optical property of the as-prepared Bi2S3@TiO2(B) nano-heterostructures were characterized by TEM, XRD and UV–vis diffuse reflectance spectroscopy. The results revealed that Bi2S3 nano-particles were success-fully grown on the primary TiO2 NWs. The hybrids had lengths of up to a few micrometers and had the extended absorption in the visible range. In particular, the band gap of the hybrid was 1.64 eV, which was lower than 3.2 eV of the TiO2 in the anatase form. Due to the ex-tended absorption in the visible range, the prepared Bi2S3@TiO2(B) nano-heterostructures may possess high photocatalytic properties un-der visible light irradiation.