Gaur Jyoti, Kumar Sanjeev, Zineddine Mhamed, Kaur Harpreet, Pal Mohinder, Bala Kanchan, Kumar Vanish, Lotey Gurmeet Singh, Musa Mustapha, El Outassi Omar
School of Basic and Applied Sciences, RIMT University, Mandi Gobindgarh, 147301, India.
Department of Physics, Chandigarh University, Gharuan Mohali, 140413, India.
Sci Rep. 2024 Sep 4;14(1):20561. doi: 10.1038/s41598-024-65783-x.
This study addresses the critical need for efficient and sustainable methods to tackle organic pollutants and microbial contamination in water. The present work aim was to investigate the potential of multi-structured zinc oxide nanoparticles (ZnO NPs) for the combined photocatalytic degradation of organic pollutants and antimicrobial activity. A unique fusion of precipitation-cum-hydrothermal approaches was precisely employed to synthesize the ZnO NPs, resulting in remarkable outcomes. The synthesized CTAB/ZnO NPs demonstrated exceptional properties: they were multi-structured and crystalline with a size of 40 nm and possessed a narrow band gap energy of 2.82 eV, enhancing light absorption for photocatalysis. These nanoparticles achieved an impressive degradation efficiency of 91.75% for Reactive Blue-81 dye within 105 min under UV irradiation. Furthermore, their photocatalytic performance metrics were outstanding, including a quantum yield of 1.73 × 10 Φ, a kinetic reaction rate of 3.89 × 10 µmol g h, a space-time yield of 8.64 × 10 molecules photon mg, and a figure-of-merit of 1.03 × 10 mol L J g h. Notably, the energy consumption was low at 1.73 × 10 J mol, compared to other systems. Additionally, the ZnO NPs exhibited effective antimicrobial activity against S. aureus and P. aeruginosa. This research underscores the potential of tailored ZnO NPs as a versatile solution for addressing both organic pollution and microbial contamination in water treatment processes. The low energy consumption further enhances its attractiveness as a sustainable solution.
本研究满足了对高效且可持续的方法来处理水中有机污染物和微生物污染的迫切需求。当前工作的目标是研究多结构氧化锌纳米颗粒（ZnO NPs）在有机污染物光催化降解和抗菌活性方面的潜力。精确采用了沉淀与水热方法的独特融合来合成ZnO NPs，取得了显著成果。合成的CTAB/ZnO NPs表现出卓越的性能：它们是多结构且结晶的，尺寸为40纳米，具有2.82电子伏特的窄带隙能量，增强了光催化的光吸收。这些纳米颗粒在紫外线照射下105分钟内对活性蓝-81染料的降解效率达到了令人印象深刻的91.75%。此外，它们的光催化性能指标非常出色，包括量子产率为1.73×10 Φ、动力学反应速率为3.89×10微摩尔每克小时、时空产率为8.64×10分子每光子毫克，以及品质因数为1.03×10摩尔每升焦耳每克小时。值得注意的是，与其他系统相比，其能量消耗较低，为1.73×10焦耳每摩尔。此外，ZnO NPs对金黄色葡萄球菌和铜绿假单胞菌表现出有效的抗菌活性。这项研究强调了定制的ZnO NPs作为一种通用解决方案在水处理过程中解决有机污染和微生物污染问题的潜力。低能量消耗进一步增强了其作为可持续解决方案的吸引力。
