Tiyyagura Hanuma Reddy, Majerič Peter, Bračič Matej, Anžel Ivan, Rudolf Rebeka
Faculty of Mechanical Engineering, University of Maribor, Smetanova ulica 17, 2000 Maribor, Slovenia.
Zlatarna Celje d.o.o., Kersnikova ulica 19, 3000 Celje, Slovenia.
Nanomaterials (Basel). 2021 Feb 28;11(3):599. doi: 10.3390/nano11030599.
Nowadays, cost-effective, available, and flexible paper-based electronics play an essential role in the electronics industry. Herein, we present gold nanoparticles (AuNPs) as a potential raw material for gold inks in the future for such purposes. AuNPs in this research were synthesised using the ultrasonic spray pyrolysis (USP) technique from two precursors: gold (III) chloride tetrahydrate and gold (III) acetate. Synthesised AuNPs were collected in a suspension composed of deionised (D.I.) water and the stabiliser polyvinylpyrrolidone (PVP). AuNPs' suspensions were subjected to the rotavapor process to obtain gold inks with higher Au concentration (>300 ppm). ICP-MS measurements, the size and shape of AuNPs, ζ-potential, Ultraviolet-visible (UV-Vis) spectrophotometry measurements, and scanning electron microscop y (SEM) of gold inks were carried out in order to find the optimal printing parameters. In the final stage, the optical contact angle measurements were performed using a set of polar to non-polar liquids, allowing for the determination of the surface free energy of gold inks. Inkjet printing of gold inks as defined stripes on photo paper were tested, based on the characterisation results.
如今，经济高效、可得且灵活的纸质电子产品在电子行业中发挥着至关重要的作用。在此，我们提出金纳米颗粒（AuNPs）作为未来用于此类目的的金墨水的潜在原材料。本研究中的AuNPs是使用超声喷雾热解（USP）技术由两种前驱体制备而成：四水合氯化金（III）和醋酸金（III）。合成的AuNPs收集在由去离子（D.I.）水和稳定剂聚乙烯吡咯烷酮（PVP）组成的悬浮液中。对AuNPs悬浮液进行旋转蒸发过程以获得金浓度更高（>300 ppm）的金墨水。进行电感耦合等离子体质谱（ICP-MS）测量、AuNPs的尺寸和形状、ζ电位、紫外可见（UV-Vis）分光光度法测量以及金墨水的扫描电子显微镜（SEM）分析，以找到最佳印刷参数。在最后阶段，使用一组从极性到非极性的液体进行光学接触角测量，从而确定金墨水的表面自由能。基于表征结果，测试了将金墨水喷墨打印在相纸上形成规定条纹的情况。
