纳米多孔金和纳米TiO2粒子协同作用下原位生长TiO2纳米片/纳米线（英文）  

In-situ Growth of TiO2 Nanosheets/Nanowires Controlled by Nanoporous Gold Membrane and TiO2 Nanoparticles

作　　者：陶锦[1] 卜钰[1] 陈爱英[1] 王现英[1,2] Tao Jin;Bu Yu;Chen Aiying;Wang Xianying(University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Innovation Institution for Materials,Shanghai 200444,China)

机构地区：[1]上海理工大学,上海200093 [2]上海材料创新研究院,上海200444

出　　处：《稀有金属材料与工程》2019年第8期2468-2473,共6页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(51771121,51572173);Ability Construction of Local Colleges and Universities in Shanghai Municipal(16060502300,18511110600)

摘　　要：采用简单的热氧化方法,以纳米多孔金(NPG)薄膜和预置在纳米孔内的TiO2纳米粒子为催化剂,利用"从下至上"的方法在纯钛板表面原位生长TiO2纳米片(NSs)和纳米线(NWs)。探讨了催化剂组成和生长温度对TiO2 NSs/NWs生长的影响。结果表明,所制备的NSs/NWs的复合结构分为3部分:最顶端为Au纳米粒子、TiO2纳米线位于中部、底部为TiO2纳米片。NPG和预置的TiO2纳米粒子是生长纳米片和纳米线复合结构的决定性因素。对甲基橙的光催化降解实验表明,所制备的TiO2 NSs/NWs表现出比单一TiO2NWs增强的光催化性能。这表明TiO2 NSs/NWs复合结构具有更优的光催化性能。The TiO2 nanosheets(NSs) and nanowires(NWs) were prepared by a bottom-up method on a pure Ti sheet via simple thermal oxidation using a nanoporous gold(NPG) membrane and pre-set TiO2 nanoparticles(NPs) as coupling catalysts. The effects of catalysts and heating temperature on the growth of TiO2 NSs/NWs were investigated. The results show that the as-prepared TiO2 NSs/NWs are characterized by three segments, an Au NP on the tip, NW in the middle and NS at the bottom. The NPG and pre-set TiO 2 NPs are decisive for the competitive growth of TiO2 NSs and NWs. The TiO2 NSs/NWs exhibit an enhanced photocatalytic performance toward the degradation of methyl orange compared with the pure TiO2 NWs, which can be attributed to the composite structure of NSs/NWs.

关 键 词：TIO2 纳米片 纳米线 纳米多孔金 催化剂 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学] TB383.1[一般工业技术—材料科学与工程]