Surfactant-free synthesis of leaf-like hierarchical CuO nanosheets as a UV light filter

2D metal oxide nanoflakes for sensing applications: Review and perspective

“…The response reached over 400% after UV exposure for about 2 min and still increased significantly, yielding a response improvement of 1-2 orders of magnitude as compared to both metal oxides separately. Uthirakumar et al have increased the UV sensing performance of polymethylmethacrylate films by incorporating 0.2% CuO nanoflakes, resulting in a more than threefold increase of UV absorption capability [264].…”

Carbon quantum dots decorated leaf-like CuO nanosheets and their improved dispersion for an excellent UV-shielding properties in polymer films

“…The major drawback of these films are losing their transparency at high concentration because of aggregation of nanoparticles. We demonstrated the maximum of 66% of UV light absorption by the CuO/PMMA nanocomposites film at lower CuO content [7]. However, to improve further, a similar problem of the particle aggregation is inevitable at high content of CuO.…”

“…Briefly, a polymer film holder and a UV digital meter were placed in a hollow wooden cylinder with the distance of 6 and 9 cm from the top, respectively. In this lab, the maximum UV absorbing capability of 66% with the 0.8 mm thick CuO/PMMA film was reported [7]. Further to improve the UV-shielding capability of the polymer film, the higher loading of leaf-like CuO nanosheets is inevitable.…”

“…In this context, UV-shielding materials have gained a special attention in the recent decades, particularly for developing a simple method to fabricate the polymer films containing UV-shielding materials, which could effectively block the UV-rays without disturbing the transparency in the visible region [4]. Hence, many research groups have focused to develop the UV-shielding materials such as TiO 2 , ZnO, CuO and CeO 2 dispersed transparent polymeric film, as the protective UV coatings [5][6][7]. Although, the majority of transition metal oxides showing a good UV-shielding property, it also exhibits a photocatalytic property upon UV light absorption.…”

Controllable Synthesis and Catalytic Property of Novel Copper Oxides (CuO and Cu<sub>2</sub>O) Nanostructures

“…Therefore, synthesis of shape-and size-controlled copper oxides (CuO and Cu 2 O) nanostructures is necessary to tailor their chemical and physical properties. Various copper oxides have been prepared via different methods [13][14][15][16][17][18]. Though the great progress in the synthesis of copper oxides was achieved, it is still a challenge to develop different strategies to achieve the synthesis of copper oxides nanostructures with controlled phase and morphology.…”