Zinc oxide zno

The synthesis reagents of analytical purity were used without further purification. The materials used for the preparation of copper-based catalysts were as follows: copper acetate (CH₃-COO)₂Cu ·H₂O, 99.5%, S.C UTCHIM SRL, Ramnicu Valcea, Romania); copper nitrate (Cu (NO₃)₂·2.5 H₂O, 98.0%, Alfa Aesar, MA, USA), zinc oxide (ZnO, 99.0%, Alfa Aesar, MA, USA), aluminum oxide (Al₂O₃, 99.97%, Alfa Aesar, MA, USA), and distilled water. The Millipore system (Stuttgart, Germany) was used to purify the water.

Indium acetate (In(OAc)₃, 99.99%, Sigma), zinc acetate (Zn(OAc)₂, 99.99%, Sigma), copper iodide (CuI, 99.999%, Sigma), dodecanethiol (DDT, >98%, Sigma), oleylamine (OA, 70%, Sigma), 1-octadecene (ODE, 90%, Sigma), zinc oxide (ZnO, 99%, Alfa Aesar), disodium terephthalate (DST, 99+%, Alfa), nitrotetrazolium blue chloride (NBT, >98%, Sigma), leuco crystal violet (LCV, 99%, Sigma), enzyme horseradish peroxidase (HRP, type II, Sigma), singlet oxygen sensor green (SOSG, Molecular Probes), Rose Bengal (RB, 95%, Sigma) and chloroform (>99%, Carlo Erba) were used without further purification.

Glasses were prepared by the traditional melt-quenching technique. The following raw materials: barium carbonate BaCO₃ (Fox Chemicals, 99.99%), gallium oxide Ga₂O₃ (Fox Chemicals, 99.999%), germanium oxide GeO₂ (Fox Chemicals, 99.999%) and zinc oxide ZnO (Alfa Aesar, 99.999%) were weighed in the required proportions to prepare a batch of 7 g. Then the powders were mixed in a platinum crucible and heated up to 1550 °C for 1 h. The melted glass was formed by quenching in ambient air. Glass was then annealed at T_g − 40 °C for 4 h and slowly cooled down to room temperature to reduce residual mechanical stress. Finally, it was cut and polished on both parallel faces for fs-laser irradiation.