Materials Research and Development is an international, peer-reviewed open access journal dedicated to advancing research the field of materials science and engineering. The journal provides a rapid publication process to ensure wide dissemination of high-quality articles to scientists, professionals, and interested individuals worldwide. Our goal is to serve as an efficient, reliable, and trusted platform for scholars and readers, publishing cutting-edge research in the field.
Abstract: In this paper, the precursor of γ-Al2O3 was prepared by hydrothermal method, AlOOH (pseudo-thin aluminium water), further mixed with melamine, calcined into oxygen-deficient γ-Al2O3 (OV-γ-Al2O3) by one-step pyrolysis method in an air atmosphere, and the morphology and structure of the samples were characterized by a series of characterization methods such as SEM and XRD. Ultraviolet-Vis spectrophotometry was used to determine the degradation efficiency of the catalyst to methylene blue. By controlling the annealing rate of melamine (CM) and g-C3N4(CN) after calcination of γ-Al2O3 precursors, the products of melamine thermal decomposition were investigated to form g-C3N4 or oxygen vacancies formed by γ-Al2O3. The results show that when the annealing rate is 5°C/min, g-C3N4 is formed, and when the annealing rate is 1°C/min, g-C3N4 decomposes to construct the oxygen vacancy of the carrier. When the doping ratio is 1.2:1, the total degradation effect of OV-γ-Al2O3 can reach 89%, which is 2.8 times that of ordinary Al2O3 and 1 times higher than that of γ-Al2O3. The stability of OV-γ-Al2O3 was proved by five cycle experiments and the degradation of different concentrations of MB solution, and the data were analyzed and discussed, in order to provide a theoretical basis and research ideas for the treatment of actual sewage. Finally, combined with various characterization and test results, the main active species of OV-γ-Al2O3 in the degradation process were predicted •OH.Abstract: In this paper, the precursor of γ-Al2O3 was prepared by hydrothermal method, AlOOH (pseudo-thin aluminium water), further mixed with melamine, calcined into oxygen-deficient γ-Al2O3 (OV-γ-Al2O3) by one-step pyrolysis method in an air atmosphere, and the morphology and structure of the samples were characterized by a series of characterization metho...Learn More
Abstract: Hydrogen peroxide (H2O2) is one of the most important reactive oxygen species (ROS), involved in various pathological and physiological processes. Additionally, since cancer cells produce an excess of H2O2 compared to normal cells, H2O2 can serve as a biomarker for assessing differences in oxidative stress capabilities among different cells and for detecting cancer cells. Therefore, effective and accurate detection of H2O2 is crucial for biological research. Electrochemiluminescence detection offers the advantages of high sensitivity and simple operation. Melem, as an eco-friendly biological material, also possesses certain luminescent properties, making it valuable for application in the field of electrochemiluminescence detection. In this paper, oxidized melamine (melem-AT) with good luminescent property was prepared by thermal polymerization combined with nitric acid oxidation. Based on the synergistic effect of H2O2 on electrochemiluminescence (ECL) of melem-AT, a H2O2 sensor was constructed using melem-AT as luminescent substance and potassium persulfate as co-reaction agent. Under the best experimental conditions, there is a good linear relationship between the luminous intensity of melem-AT and H2O2 concentration. The detection range is 0.125 ~ 35 mol/L with detection limit of 100 nmol/L. The detection results of H2O2 in human serum show that ECL sensor has potential application value in clinical detection. Compared to other methods, this sensor offers advantages such as simple operation, low cost, and fast detection speed, providing a promising approach for the detection of H2O2.Abstract: Hydrogen peroxide (H2O2) is one of the most important reactive oxygen species (ROS), involved in various pathological and physiological processes. Additionally, since cancer cells produce an excess of H2O2 compared to normal cells, H2O2 can serve as a biomarker for assessing differences in oxidative stress capabilities among different cells and for...Learn More
