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In recent years, two-dimensional layered materials have attracted extensive attention due to their unique physical and chemical properties. In this paper, a solution method is utilized to obtain ultra-thin two-dimensional layered titanium disulfide nanosheets ( NSs) with controlled thickness. The obtained titanium disulfide NSs s how a few atomic layers in the thickness. Moreover, the T iS2 NSs exhibit excellent photothermal performance compared to conventional photothermal silver nanoparticles. Our results s how that the temperature of the TiS2 NSs aqueous solution (500 µg/ mL) can be increased to 54 . 41 'C under the irradiation of infrared 808 nm laser with a power density of 1 W / cm2,and its photothermal stability is excellent. Through theoretical calculation, the photo thermal con version efficiency is 42 . 14 % . This study shows that two-dimensional layered TiS2 NSs is a promise photothermal material, which has potential application value for the treatment of cancer. [ABSTRACT FROM AUTHOR]

In this paper, TiS2 nanosheet porous structure was prepared via a facile two-step process. The precursor, TiH1.924 nanoparticles, were prepared by DC arc-discharge plasma method in the mixed atmosphere of H2 and Ar with titanium bulk as the titanium source, then blended with sublimated sulfur and heated to obtain the TiS2 nanosheet porous structure. The samples were characterized by X-ray diffraction（XRD）, transmission electron microscopy（TEM）, scanning electron microscopy（SEM）, Raman and so on. XRD and Raman results showed that the as-synthesized TiS2 was fully crystallized. TEM and SEM results showed the nanosheet micro-morphology of the as-synthesized TiS2. The nanosheets grew in any direction to form a porous structure. The TiS2 nanosheet porous structure was used as the anode material of lithium-ion batteries to study its electrochemical lithium storage performance. The first charge-discharge specific capacities under the current density of 500 mA/g were 816.0 mAh/g and 1193.0 mAh/g, respectively. After 50 cycles, the capacity remained a capacity of 550 mAh/g. Even under a high current density of 5 A/g, it still maintained a capacity of 100 mAh/g, showing excellent cycle stability and charge-discharge reversibility. [ABSTRACT FROM AUTHOR]