Department of Mechanical Engineering, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad, 500078, India.
MEMS, Microfluidics and Nano Electronics Laboratory, Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad, 500078, India.
Chemosphere. 2022 Sep;302:134915. doi: 10.1016/j.chemosphere.2022.134915. Epub 2022 May 11.
3D printing technology based electrochemical device can provide ease of fabrication, cost effectiveness, rapid detection and lower limit of detection. Herein, a novel, customized, portable and inexpensive 3D printed electrochemical device, has been presented. Fibrous carbon Toray paper, deposited with gold nanoparticles through electrodeposition, used as a working electrode which Further device was tested with 1 mM sodium hypochlorite using cyclic voltammetry (CV) and square wave voltammetry (SWV) in 0.1 M PBS. Hypochlorite has a pivotal role in supporting the growing chemical and paper industries and finds diverse uses in several clinical applications. It is primarily used for disinfecting food, water and surfaces. The scan rate study was carried out from 20 mVs to 250 mVs using cyclic voltammetry technique. The diffusion coefficient obtained from scan rate effect was 1.39 × 10 cms. The concentration range was evaluated with SWV technique, in a linear range of 0.6 μM-40 μM, with a detection limit of 0.7 μM. The device was further analyzed to ensure non-interference from co-existing chemicals like sodium chloride, potassium nitrate, sodium carbonate, sodium nitrite. Real sample analysis was done with sea, artificial sea and tap water with impressive recovery values. In summary, the developed working electrode can be customized and modified based on testing analyte; thus, the proposed device can be used for various other biochemical analytes.
基于 3D 打印技术的电化学装置具有易于制造、成本效益高、快速检测和更低检测限的特点。本文提出了一种新型的、定制的、便携式和廉价的 3D 打印电化学装置。将金纳米粒子通过电沉积沉积在碳纤维 Toray 纸上，用作工作电极。进一步使用循环伏安法（CV）和方波伏安法（SWV）在 0.1 M PBS 中对该装置进行了测试，测试用的是 1 mM 的次氯酸钠。次氯酸盐在支持化学和造纸工业的发展方面发挥着关键作用，并在许多临床应用中得到了广泛的应用。它主要用于食品、水和表面的消毒。通过循环伏安技术对扫描速率进行了从 20 mV/s 到 250 mV/s 的研究。从扫描速率效应中得到的扩散系数为 1.39×10-5 cm2/s。通过 SWV 技术评估了浓度范围，线性范围为 0.6 μM-40 μM，检测限为 0.7 μM。该装置进一步进行了分析，以确保不受共存化学物质如氯化钠、硝酸钾、碳酸钠、亚硝酸钠的干扰。对海水、人工海水和自来水进行了实际样品分析，结果令人满意。总之，所开发的工作电极可以根据测试分析物进行定制和修改；因此，该装置可用于各种其他生化分析物。
