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Synthetic dyes used in textile and dyeing industries are significantly dangerous to water ecosystems due to their high toxicity and non-biodegradability. Effective removal of dyes from wastewater is now a day a challenging task. Photocatalysis has emerged as a sustainable and eco-friendly technology that uses solar energy to remediate environmental pollution. Enhance photocatalytic activity is a major task towards industrial attractive applications. Tuning photocatalysts activity in the visible region while improving their efficiency involves processes as coupling semiconductors, aligning potential bands, reducing energy gaps, and improving carrier separation. In this study, we synthesized nanotubes based on CeO2 (1D) and nanosheets based on La2Ti2O7 (2D) to form NT-CeO2@La2Ti2O7 heterojunctions via a hydrothermal synthesis route. This approach offers notable advantages as novelty, green chemistry, high yield, efficiency, simple equipment, and intermediate temperature. The NT- CeO2 content in the heterojunctions influenced their catalytic activity, affecting physicochemical characteristics and photocatalytic performance. The 1D-2D NT-CeO2@La2Ti2O7 heterojunctions consisted of CeO2 nanotubes deposited on La2Ti2O7 nanosheets. Characterization techniques including X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Raman spectroscopy, and diffuse reflectance were employed to confirm the junction formation, crystallinity, morphology, and characteristic vibrational modes of the NT- CeO2 @ La2Ti2O7 heterojunction. Photocatalytic tests revealed that the NT-CeO2@La2Ti2O7 heterojunction achieved over ~25% degradation of Rhodamine-B (RhB) within 150 minutes under visible light irradiation from a 150W power LED. The power consumption for RhB degradation using NTCeO2@ La2Ti2O7 heterojunction was superior to previous reports using Xe and Hg lamps in similar systems involving cerium oxide. Furthermore, RhB degradation was dependent on the initial dye concentration, with h+ and O2.- identified as the primary oxidative species responsible for RhB degradation. In summary, this study presents the synthesis of NTCeO2@ La2Ti2O7 heterojunction via the hydrothermal method for visible-light photocatalysis of Rhodamine-B degradation, utilizing the energy in the visible spectrum as a stimulation source. [ABSTRACT FROM AUTHOR]

Introduction: To determine whether the local administration of insulin glargine compared with placebo in nondiabetic patients with venous ulcers (VUs) leads to increased wound healing., Methods: A randomized controlled trial using a split-plot design was performed in 36 adults with leg VUs >25 cm 2 and more than 3 mo of evolution. Each hemi-wound received either 10 UI insulin glargine or saline solution once a day for 7 d. Size of the wounds, thermal asymmetry, the number of blood vessels, and the percentage area of collagen content in wound biopsies were assessed at baseline and after 7 d of treatment. Blood capillary glucose was monitored once a day after the insulin injection., Results: After 7 d of treatment, the hemi-wounds treated with insulin glargine were significantly smaller, had less thermal asymmetry, more blood vessels, and more collagen content than the saline-treated side. Correlation between thermal asymmetry and the number of blood vessels was also found (r 2  = 66.2, P < 0.001). No patient presented capillary glucose levels ≤3.3 mmol/L nor any adverse effects., Conclusions: In nondiabetic patients with chronic VUs, the topical administration of insulin glargine seems to be safe and promotes wound healing and tissue repair after 7 d of treatment., (Copyright © 2022 Elsevier Inc. All rights reserved.)