Sebeia Nouha, Jabli Mahjoub, Sonsudin Faridah
Textile Materials and Processes Research Unit, Tunisia National Engineering School of Monastir, University of Monastir, Monastir 5000, Tunisia.
Department of Chemistry, College of Science, Majmaah University, Al-Majmaah 11952, Saudi Arabia.
Polymers (Basel). 2024 Jun 12;16(12):1661. doi: 10.3390/polym16121661.
Nanomaterials have attracted specific consideration due to their specific characteristics and uses in several promising fields. In the present study, was employed as a biological extract to facilitate the reduction of copper and silver ions within garlic peel powders. The resulting garlic-CuO and garlic-AgO nanocomposites were characterized using several analytical methods including FTIR, TGA/DTG, SEM, TEM, and XRD analyses. The garlic peel exhibited a rough surface. The nanoparticles were evenly dispersed across its surface. The incorporation of CuO and AgO nanoparticles affected the crystal structure of garlic peel. The establishment of CuO and AgO nanoparticles was evidenced by the highest residual mass values observed for the prepared nanocomposites. The thermogravimetric analysis showed that the prepared nanocomposites had lower thermal stability compared with garlic peel powders. The prepared nanocomposites were used for catalytic degradation of naphthol blue black B and calmagite. The decolorization process depended on the quantity of HO, initial concentration of azo dyes, duration of contact, and temperature of the bath. The calculated activation energy (Ea) values for the garlic-CuO nanocomposites were found to be 18.44 kJ mol and 23.28 kJ mol for calmagite and naphthol solutions, respectively. However, those calculated for garlic-AgO nanocomposites were found to be 50.01 kJ mol and 12.44 kJ mol for calmagite and naphthol, respectively.
纳米材料因其特殊性质以及在多个有前景领域的应用而受到特别关注。在本研究中，大蒜提取物被用作生物提取物以促进蒜皮粉末中铜离子和银离子的还原。使用包括傅里叶变换红外光谱（FTIR）、热重分析/微商热重分析（TGA/DTG）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和X射线衍射（XRD）分析在内的多种分析方法对所得的大蒜 - 氧化铜（garlic-CuO）和大蒜 - 氧化银（garlic-AgO）纳米复合材料进行了表征。蒜皮呈现出粗糙的表面。纳米颗粒均匀地分散在其表面。氧化铜和氧化银纳米颗粒的掺入影响了蒜皮的晶体结构。制备的纳米复合材料观察到的最高残留质量值证明了氧化铜和氧化银纳米颗粒的形成。热重分析表明，与蒜皮粉末相比，制备的纳米复合材料具有较低的热稳定性。制备的纳米复合材料用于催化降解萘酚蓝黑B和平镁试剂。脱色过程取决于羟基自由基（HO）的量、偶氮染料的初始浓度、接触时间和水浴温度。发现大蒜 - 氧化铜纳米复合材料对平镁试剂和萘酚溶液的计算活化能（Ea）值分别为18.44 kJ/mol和23.28 kJ/mol。然而，发现大蒜 - 氧化银纳米复合材料对平镁试剂和萘酚的计算活化能分别为50.01 kJ/mol和12.44 kJ/mol。
