Results 21 to 30 of about 1,665,461 (132)
Zhejiang Daxue xuebao. Lixue ban, 2004 以四氯化钛(TiCl4)为原料,采用3种不同的沉淀剂制备了纳米二氧化钛粉体.用TG-DTA和FT-IR对前驱体进行了分析.结果表明,不同沉淀剂导致粉体表面状态不同.以乙酸和尿素为沉淀剂的粉体表面不仅沉淀剂可以形成化学吸附,水分子也参与反应并在粉体表面形成-OH基团,而以EDTA为沉淀剂的粉体表面只吸附沉淀剂.煅烧后,用TEM对颗粒形貌进行了表征.实验发现,以EDTA为沉淀剂制备的粉体分散性优于其他沉淀剂制备的二氧化钛颗粒.这些差异主要是由于沉淀剂的性质及其在粉体表面的吸附状态不同.
LIUBo(刘波) +5 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Near‐infrared (NIR) phosphors with broadband and efficient emission are pivotal for the performance of NIR phosphor‐converted light emitting diodes (pc‐LEDs). In this study, the double perovskite phosphor La2MgTiO6:Cr3+ phosphor with broadband emission in the range of 650–950 nm was prepared.
Xu Qian +7 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The poor soft tissue integration around titanium implants creates a microgap that serves as a pathway for pathogen invasion, resulting in infection, inflammation, and the progression of peri‐implantitis. As the implant’s transmucosal component, the abutment determines the degree of peri‐implant soft tissue attachment.
Xuan Li +7 more
wiley +1 more source
Gongye shui chuli, 2003 纳米二氧化钛能带和导带之间的带隙能为3．2eV，当被紫外光照射时，其表面形成的电子空穴对(h+e-)，具有较强的氧化还原性，可将废水中的含氯、含磷、含硫有机物降为小分子无机物二氧化碳和水，高氧化态的无机物还原成单质，或氧化成氧化物沉淀出来。经研究表明，用纳米二氧化钛处理后，近300种有机物降解效果良好，应用到污水处理工作中，也表现出良好的效果。利用其超强的氧化性，还可杀灭水中的多种细菌，净化自来水，提高饮用水的质量。纳米二氧化钛的表面双亲性，用于化纤上，可减少洗涤剂的用量，从而降低污水的排出量 ...
曹广秀, 李贯良, 陈淑敏
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Zhejiang Daxue xuebao. Lixue ban, 1999 选择具有抗菌、抗氧化或抗炎镇痛的药物——水杨酸(HLⅠ)、阿斯匹林(HLⅡ)与具有抗癌活性的二氯二茂钛(Cp2TiCl2)在非水介质中反应, 得到两种具有潜在药理活性的茂钛配合物:Cp2Ti(LⅠ)2,Cp2Ti(LⅡ)2 .经过元素分析、摩尔电导、核磁共振氢谱与碳谱、红外及紫外光谱等测试, 表明水杨酸、阿斯匹林均与二氯二茂钛形成含Ti-O 键的单齿配位的羧酸二取代二茂钛配合物.
XIEXiao-mei(谢晓梅) +3 more
doaj +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT By adding CuO, the worm‐like amorphous phase and atomic clusters were simultaneously introduced, enabling the (Ni40Ti40Cu20)99.9O0.1 alloy micron columns to exhibit a uniform flow strain of over 40% and a strength of over 2.5 GPa during compression.
Huwen Ma +13 more
wiley +1 more source
Gongye shui chuli, 2020 纳米TiO2微球作为光催化剂具有降解速度快、效率高、降解完全等特点，受到广泛关注。在纳米复合材料中引入磁性材料，通过外加磁场可实现快速分离，获得更有效、环保的水处理工艺。对国内外磁性二氧化钛微球制备工艺的研究现状进行综述，总结了液相法中不同制备方法对微球形貌、结构特征的影响，比较其优缺点，详细阐述了不同性能的磁性二氧化钛微球在水体净化、染料废水处理方面的应用现状。指出其在制备及应用领域的不足，并展望了磁性二氧化钛微球在水处理领域的发展前景。
曹家炜, 刘海成, 徐乐中, 陈卫
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A Multifunctional Reducing Molecular Dopant for 16% Efficient Tin Perovskite Solar Cells
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Although lead‐based photovoltaics have seen remarkable progress, tin‐based perovskite solar cells (Sn‐PSCs) continue to face challenges due to their limited power conversion efficiency and insufficient operational stability. The primary cause of this performance gap is the susceptibility of Sn2+ to oxidation, which promotes rapid defect ...
Xianyong Zhou +12 more
wiley +1 more source
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Moist‐electric generators (MEGs) harness energy from ubiquitous ambient humidity, which has emerged as a promising way to collect energy irrespective of location and time. This study presents a high‐performance MEG employing a bilayer Janus nanofiber membrane: a hydrophilic layer (lithium chloride/citric acid/polyvinyl alcohol) for enhanced ...
Peng Chen +7 more
wiley +1 more source