Lamba Ravinder, Bhanjana Gaurav, Dilbaghi Neeraj, Gupta Vivek, Kumar Sandeep
Department of Physics, Guru Jambheshwar University of Science and Technology, Hisar-Haryana, 125001, India.
Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar-Haryana, 125001, India.
Beilstein J Nanotechnol. 2025 Mar 26;16:422-434. doi: 10.3762/bjnano.16.33. eCollection 2025.
Special features of zinc oxide nanoparticles have drawn a lot of interest due to their wide bandgap, high surface area, photocatalytic activity, antimicrobial activity, and semiconductor properties. By doping ZnO nanoparticles with transition metals, we can alter their electrical, optical, and magnetic properties by introducing new electronic states into the band structure. Herein, Ag is added to ZnO nanostructures to improve their optical properties to detect heavy metal lead ions. The prepared lead sensor with ultrahigh sensitivity, based on silver-doped ZnO nanorods (Ag@ZnO NRs), was fabricated and characterized. The morphological, structural, compositional, and optical characteristics of the Ag@ZnO NRs were investigated using a variety of methods after they were fabricated using a low-temperature co-precipitation method. The resulting Ag@ZnO NRs had good optical properties, nanorod morphologies, and high crystallinity with no impurities. Technological advancements are leading people to use lightweight electronics and affordable sensors. Electrochemical techniques comparatively offer quick, portable, sensitive, and inexpensive basic equipment for heavy metal detection. The interactions between Ag@ZnO NRs and lead were studied using electrochemical methods. The prepared lead sensor using Ag@ZnO NRs show a very low detection limit and a very high sensitivity toward lead. The lead chemical sensor that was developed had a detection limit of 3 ppm with a sensitivity of 16 µA·ppm·cm. The recorded reaction time of lead sensor was less than two seconds.
氧化锌纳米颗粒的特殊性质因其宽带隙、高比表面积、光催化活性、抗菌活性和半导体特性而备受关注。通过用过渡金属掺杂氧化锌纳米颗粒，我们可以通过在能带结构中引入新的电子态来改变其电学、光学和磁学性质。在此，将银添加到氧化锌纳米结构中以改善其光学性质，用于检测重金属铅离子。制备了基于银掺杂氧化锌纳米棒（Ag@ZnO NRs）的具有超高灵敏度的铅传感器，并对其进行了表征。在使用低温共沉淀法制备Ag@ZnO NRs之后，使用多种方法研究了其形态、结构、组成和光学特性。所得的Ag@ZnO NRs具有良好的光学性质、纳米棒形态和高结晶度，且无杂质。技术进步促使人们使用轻型电子产品和价格合理的传感器。电化学技术相对而言为重金属检测提供了快速、便携、灵敏且廉价的基础设备。使用电化学方法研究了Ag@ZnO NRs与铅之间的相互作用。使用Ag@ZnO NRs制备的铅传感器对铅具有非常低的检测限和非常高的灵敏度。所开发的铅化学传感器的检测限为3 ppm，灵敏度为16 µA·ppm·cm。记录的铅传感器的反应时间小于两秒。
