CAJ | 학술논문

采用化学气相沉积法在Ti基上制备了金红石相TiO2纳米棒（A-TiO2 NRs），将其在低浓度的 TiO2溶胶中浸泡后退火得到锐钛矿/金红石混合晶相TiO2核壳结构（A/R-TiO2 NRs）。采用化学水浴沉积法在该结构表面修饰 CdS 纳米晶颗粒，得到 CdS纳米晶粒修饰的锐钛矿/金红石混合晶相 TiO2三元双异质结（CdS-A/R-TiO2 NRs）薄膜。将该纳米复合薄膜用做光催化剂在模拟太阳光照射下降解目标污染物甲基橙。实验结果表明， A/R-T iO2 N Rs薄膜样品的光催化活性优于纯R-TiO2 NRs样品；而CdS-A/R-TiO2 NRs混合晶相双异质结薄膜的光催化活性有更显著的增强。
채용화학기상침적법재Ti기상제비료금홍석상TiO2납미봉（A-TiO2 NRs），장기재저농도적 TiO2용효중침포후퇴화득도예태광/금홍석혼합정상TiO2핵각결구（A/R-TiO2 NRs）。채용화학수욕침적법재해결구표면수식 CdS 납미정과립，득도 CdS납미정립수식적예태광/금홍석혼합정상 TiO2삼원쌍이질결（CdS-A/R-TiO2 NRs）박막。장해납미복합박막용주광최화제재모의태양광조사하강해목표오염물갑기등。실험결과표명， A/R-T iO2 N Rs박막양품적광최화활성우우순R-TiO2 NRs양품；이CdS-A/R-TiO2 NRs혼합정상쌍이질결박막적광최화활성유경현저적증강。
An approach has been developed for the synthesis of a CdS nanocrystalline modified anatase-/rutile-TiO2 core-shell nanorods(NRs) ternary double-heterostructure by chemical vapor deposition ,sol-gel and chemical bath deposition . The photocatalytic performance of the samples was evaluated by photocatalytic degradation methyl orange under simulated sunlight irradiation . The results demonstrate that mixture phase single-heterostructure has better photocatalytic performance than pure rutile TiO2 ,and CdS nanocrystalline modified mixture phase TiO2 ternary double-heterostructure film possesses significantly enhanced photocatalytic performance .