Antimonene, a new type of 2D group‐VA material beyond phosphorene, is theoretically predicted to exhibit remarkable electronics and optical properties with enhanced stability. However, its more general and practical applications seriously lag behind due to a shortage of effective synthesis techniques in delivering high‐quality few‐layer antimonene (FLA) and antimonene quantum dots (AQDs), and deep understanding of the mechanism in light‐antimonene interaction. Herein, based on electrochemical exfoliation and sonochemical approaches, FLA is synthesized with an average thickness down to 31.6 nm and AQDs with an average lateral size of 3.4 nm, and the corresponding nonlinear optical response is further investigated at the visible wavelength for the first time. It is shown that antimonene possesses a giant nonlinear refractive index of ≈10−5 cm2 W−1 and a high stability in ambient condition for months. The experimental findings may be considered as an important step toward antimonene‐based nonlinear photonics devices (Optical Switcher, Kerr shutter, beam shaper, etc.), in which their unstable counterpart phosphorene may not compete with.

Here we report a new kind of three-dimensional (3D) hybrid aerogels, based on graphene oxide (GO) and black phosphorus nanoflakes (BPNFs), for the first time. Our results demonstrate that the as-prepared GO/BPNF hybrid aerogels exhibited significantly enhanced photothermal as well as electrical properties of GO aerogels due to the addition of BP. Moreover, they also possessed excellent photothermal stability under ambient conditions without any protection, which can be ascribed to the coverage of BPNFs with GO nanosheets in these aerogels. This exceptional photothermal property along with robust stability renders GO/BPNF aerogels with promising bio-related applications, such as photothermal therapy for cancer treatment.

No abstract

No abstract