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Methylene blue (MB) and Rhodamine B (RB) are produced as water pollutants in textile, plastic and dye industries. Many studies have investigated to remove RB and MB in wastewater of industries. At present work, Co 3 O 4 /ZnO nanocomposite is applied for removal of MB and RB dyes from water. Eco friendly, Co 3 O 4 /ZnO is synthesized via microwave assisted method. Results showed that uniform morphology and size particle is obtained at 10 min and 900W as optimum time and power. Synthesized Co 3 O 4 /ZnO is characterized with X-ray diffraction (XRD) analysis, Transmission Electron Microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, Scanning Electron Microscopy (SEM) and vibrating sample magnetometers (VSM). Prepared nanocomposite shows excellent photo degradation behavior toward MB and RB under UV light. Photo degradation efficiency is calculated 80 and 90% for MB and RB respectively.

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In this work, new double perovskite Tb2ZnMnO6 nanoparticles were successfully synthesized by a sol–gel auto combustion method.

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Introduction: Many of Medicinal plants have been investigated for possible anticancer properties. The correlation cytotoxic effect of herbs with antioxidant activity is unclear, yet. The aim of the present study was to examine the antioxidant contents and anticancer effects of 12 Iranian medicinal plants on proliferation of breast cancer, MCF-7, and epithelial normal, MCf-10A, cells. Methods: Free radical scavenging and total antioxidant capacities of herbal waters assessed by DPPH and FRAP methods, respectively. Their total phenolic contents and cell viability determined by Folin-Ciocalteu and MTT assays, respectively. Results: Among the herbs, group A which contained relatively highest total phenolics content, antioxidant and free radical scavenging activities inhibited significantly greater growth of breast cancer cells in a dose-and time-dependent manner as compared to other groups. These medicinal plants were not cytotoxic components against normal cells. Conclusion: Therefore our results indicated that anti proliferative effects of 12 selected Iranian herbs