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Regulation of TiO_(2) nanoarrays on titanium implants for enhanced osteogenic activity and immunomodulation 被引量:2
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作者 Ruoyu Li Hongyu Zhang +3 位作者 Xiaohong Yao Bin Tang Paul K Chu Xiangyu Zhang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第19期233-244,共12页
The surface topography of implants plays a major role in osteogenesis and immunomodulation.In this study,three types of TiO_(2) nanoarrays including nanorod arrays with a diameter of 45 nm(TiO_(2)-N),nanorod arrays wi... The surface topography of implants plays a major role in osteogenesis and immunomodulation.In this study,three types of TiO_(2) nanoarrays including nanorod arrays with a diameter of 45 nm(TiO_(2)-N),nanorod arrays with a diameter of 60 nm(TiO_(2)-N N),and nanocone arrays(TiO_(2)-NW)are prepared on titanium and the behavior of bone marrow stromal cells(BMSCs)and polarization of macrophages are studied.Compared to the planar titanium control,TiO_(2) nanoarrays facilitate osteogenesis of BMSCs and stimulate the pro-healing M2 phenotype.However,adhesion,spreading,proliferation,and osteogenic differentiation of BMSCs are more pronounced on TiO_(2)-N N than both TiO_(2)-N and TiO_(2)-NW.TiO_(2)-NN also produces the best immune microenvironment,while TiO_(2)-NW is more favorable than TiO_(2)-NN from the viewpoint of cell adhesion and spreading of osteoblasts. 展开更多
关键词 tio_(2)nanoarrays Osteogenic activity IMMUNOMODULAtioN Hydrothermal treatment
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亲水型TiO2纳米阵列的制备及其抗菌性能的研究
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作者 王燕 李艳男 +1 位作者 孙亚宁 刘俊杰 《内蒙古大学学报(自然科学版)》 CAS 北大核心 2022年第2期166-171,共6页
近年来研究发现,自然界材料表面结构的特异性,可通过制备相似仿生材料实现。鉴于抗菌材料的广泛需求和应用,仿生抗菌材料成为研究热点之一。由于其化学性质稳定、廉价易得及生物相容性良好,TiO_(2)材料可被用于仿生抗菌材料的研究,而制... 近年来研究发现,自然界材料表面结构的特异性,可通过制备相似仿生材料实现。鉴于抗菌材料的广泛需求和应用,仿生抗菌材料成为研究热点之一。由于其化学性质稳定、廉价易得及生物相容性良好,TiO_(2)材料可被用于仿生抗菌材料的研究,而制备具有仿生结构的可控TiO_(2)纳米阵列材料具有很大的研究意义。利用简易的水热合成法,通过调控反应时间在掺杂氟的SnO_(2)导电玻璃(FTO)上成功制备TiO_(2)纳米阵列材料,进行了物化性能和抗菌性能测试。材料物化分析表明:随着反应时间的增加,TiO_(2)纳米阵列沿(002)晶相排布更密集,且表面水接触角从85.97°逐渐变化为19.11°。材料的表面抗菌实验结果表明,TiO_(2)纳米阵列材料对革兰氏阴性菌和阳性菌均表现出了良好的抗菌效果,这将为制备表面亲水性的抗菌复合材料提供备选材料。 展开更多
关键词 水热合成法 tio_(2)纳米阵列 抗菌材料
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一维TiO_(2)纳米阵列改性及其应用进展
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作者 王志博 李亚峰 +2 位作者 李倩倩 伍健伯 张驰 《化工新型材料》 CAS 2024年第12期68-73,80,共7页
介绍了近年来一维TiO_(2)纳米阵列结构及其反应器设计进展,综述了一维TiO_(2)纳米阵列的改性方法,包括元素掺杂、构建异质结、表面修饰、与有机碳和金属有机骨架材料复合等,分析了存在的问题并指出了其未来的发展方向。
关键词 一维tio_(2)纳米阵列 光电催化 元素掺杂 复合
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Robust nanoporous Cu/TiO_(2) ceramic filter membrane with promoted bactericidal function 被引量:1
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作者 ZHOU Li SHI ChunYing +1 位作者 XU XiaoHong JIA ChuanCheng 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2022年第11期2687-2694,共8页
Filter membrane technology has been extensively used for water purification.However,due to their high brittleness and biological fouling,filter membranes will gradually deteriorate.Here we develop a robust Cu/TiO_(2) ... Filter membrane technology has been extensively used for water purification.However,due to their high brittleness and biological fouling,filter membranes will gradually deteriorate.Here we develop a robust Cu/TiO_(2) ceramic filter membrane for water treatment,which has excellent inherent antibacterial activities both in the dark and under visible light irradiation.Onedimensional nanobelt TiO_(2) can be sintered into a nanoporous membrane structure by overlapping and interweaving with each other,thereby achieving high flux simultaneously and solving the problem of high brittleness of inorganic ceramics.Meanwhile,such one-dimensional TiO_(2) nanostructures can provide more deposition sites for Cu nanoparticles with inherent antibacterial activity in the dark.To realise the surface plasmon resonance-enhanced antibacterial activity under visible light,Cu/TiO_(2) heterostructures are used. 展开更多
关键词 filter membrane one-dimensional tio_(2) Cu/tio_(2)heterostructure antibacterial activity
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WO_(3)@Fe_(2)O_(3) Core-Shell Heterojunction Photoanodes for Efficient Photoelectrochemical Water Splitting 被引量:1
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作者 Guobing Mao Heng Wu +4 位作者 Tianyang Qiu Dingjie Bao Longjie Lai Wenguang Tu Qi Liu 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2022年第8期25-30,共6页
Photoelectrochemical(PEC) hydrogen production from water splitting is a green technology to convert solar energy into renewable hydrogen fuel. The construction of host/guest architecture in semiconductor photoanodes h... Photoelectrochemical(PEC) hydrogen production from water splitting is a green technology to convert solar energy into renewable hydrogen fuel. The construction of host/guest architecture in semiconductor photoanodes has been proven to be an effective strategy to improve solar-to-fuel conversion efficiency. In this study, WO_(3)@Fe_(2)O_(3) core-shell nanoarray heterojunction photoanodes are synthesized from the in-situ decomposition of WO_(3)@Prussian blue(WO_(3)@PB) and then used as host/guest photoanodes for photoelectrochemical water splitting, during which Fe_(2)O_(3) serves as guest material to absorb visible solar light and WO_(3) can act as host scaffolds to collect electrons at the contact. The prepared WO_(3)@Fe_(2)O_(3) shows the enhanced photocurrent density of 1.26 m A cm^(-2)(under visible light) at 1.23 V. vs RHE and a superior IPEC of 24.4% at 350 nm, which is higher than that of WO_(3)@PB and pure WO_(3)(0.43 m A/cm^(-2) and 16.3%, 0.18 m A/cm^(-2) and 11.5%) respectively, owing to the efficient light-harvesting from Fe_(2)O_(3) and the enhanced electron-hole pairs separation from the formation of type-Ⅱ heterojunctions, and the direct and ordered charge transport channels from the one-dimensional(1D) WO_(3) nanoarray nanostructures. Therefore, this work provides an alternative insight into the construction of sustainable and cost-effective photoanodes to enhance the efficiency of the solar-driven water splitting. 展开更多
关键词 host/guest photoelectrodes WO_(3) a-Fe_(2)O_(3) core-shell nanostructures one-dimensional nanoarray
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