Nanocomposite of titanium dioxide (TiO2) incorporated with cadmium/copper (Cd/Cu) ions was fabricated by the co-decomposition of a mixture of Ti, Cd, and Cu metal complexes. The crystalline structures were studied by the X-ray diffraction (XRD), which confirmed the formation of anatase and brookite mixture. The optical properties of the synthesized samples were measured by diffuse reflection spectroscopy (DRS). The bandgap red shift of host TiO2 due to Cd ions incorporation and blue shift due to Cu ions incorporation was detected and measured. The hydrogenation of the powder samples increased the carrier concentration and, thus blueshifted the bandgap. With the hydrogenation, all the synthesized samples, including undoped TiO2-acquired room temperature ferromagnetic (RT-FM) properties, which was attributed to the generation of oxygen (O) vacancies. The O-vacancies were reduced by extra annealing in air at 600 °C that eliminated the RT-FM. The magnetic measurements on Anatase/Brookite TiO2 nanocomposite doped with 3wt% Cd show a creation of a magnetic property with magnetic saturation of 7.6 memu/g, which increased to 13.1memu/g with 1% Cu co-doping.

中文翻译：

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氢化对产生磁性 Cd-Cu 共掺 TiO2 纳米微晶的关键作用

掺有镉/铜 (Cd/Cu) 离子的二氧化钛 (TiO2) 纳米复合材料是通过 Ti、Cd 和 Cu 金属配合物的混合物的共分解制备的。通过 X 射线衍射 (XRD) 研究了晶体结构，证实了锐钛矿和板钛矿混合物的形成。通过漫反射光谱（DRS）测量合成样品的光学性质。检测并测量了由于掺入 Cd 离子引起的主体 TiO2 的带隙红移和由于掺入 Cu 离子引起的蓝移。粉末样品的氢化增加了载流子浓度，从而使带隙蓝移。通过氢化，所有合成的样品，包括未掺杂的 TiO2 获得的室温铁磁 (RT-FM) 特性，这归因于氧 (O) 空位的产生。通过在 600 °C 下在空气中进行额外退火，消除了 RT-FM，从而减少了 O 空位。对掺有 3wt% Cd 的锐钛矿 / Brookite TiO2 纳米复合材料的磁性测量显示，磁饱和度为 7.6 memu/g，在 1% Cu 共掺杂时增加到 13.1memu/g。