High proportion ZnO/CuO nanocomposites: Synthesis, structural and optical properties, and their photocatalytic behavior

Improvement of The CO2 Sensitivity of HPTS Along With ZnO/CuO Nanoparticles: A Comparative Study Between Core-Shell And Hybrid Structures

“…All of the HPTS based sensing slides exhibited good carbon dioxide sensitivity (I0/I100), regression coefficients, and KSV values for the concentration range of 0-100% p[CO2]. (21). In our study, unlike the ZCO-CS, the Zn amount is higher for the ZCO-H heterostructure (confirmed by XPS).…”

“…The mechanism underlying the strong emission and absorption capabilities of the ZnO/CuO heterostructure involves bandgap excitation by energetic photons that produce holes in the crystalline valence band and exciton pairs with electrons in the conduction band. Also, the p-n hetero formation plays an important role in improving the detection performance (21,24). However, it can also be attributed to the larger depletion layer on the CuO/ZnO surface, which results from the formation of p-n heterojunctions between the p-CuO and n-type ZnO particles (24).…”

“…Recently, many heterojunctions containing ZnO and other metal oxides have become a new and popular application to improve electronic tape structure and improve gas detection performance. For example, studies have been conducted on ZnO/TiO2, NiO/ZnO, CuO/NiO/ZnO, ZnFe2O4/ZnO, CuO/ZnO structures (21).…”

Study the influence of silver and cobalt on the photocatalytic activity of copper oxide nanoparticles for the degradation of methyl orange and real wastewater dyes

“…Figure 5 represents the Raman spectrum of the nanoprepared samples. Using group theory, CuO possesses 12 zone centers at the point Γ of the Brillouin zone (BZ), (Au+2Bu) are acoustic modes, (3Au+3Bg) are infrared modes and (Ag+2Bg) are the modes of Raman active [37]. Due to the symmetry of the site in copper oxide, the displacement of oxygen atoms contributes to the three active modes, while the atoms of Cu remain constant and ineffective for the Raman modes.…”

Au decorated BiVO4 inverse opal for efficient visible light driven water oxidation

“…Constructing heterostructures by combining noble metal crystal with semiconductor can be a potential answer for this problem, due to their higher work function than most of the semiconductors for accepting photogenerated electrons from semiconductors and thus enhancing the photogenerated charge carrier separation efficiency. [25][26][27][28][29] In addition, plasmonic noble metals, such as Ag and Au, possess unique surface plasmon resonance (SPR) properties, allowing them to simultaneously facilitate the photogenerated charge carrier separation efficiency and provide SPR-induced "hot electron" for the photocatalytic reaction. 28,[30][31][32] The surface plasmon may improve the photocatalytic activities via local electromagnetic eld enhancement and resonant energy transfer (RET) mechanisms.…”