Mojtabazadeh Hossein, Safaei-Ghomi Javad
Department of Organic Chemistry, Faculty of Chemistry, University of Kashan P.O. Box 87317-51167 Kashan I. R. Iran
RSC Adv. 2025 Apr 22;15(16):12773-12784. doi: 10.1039/d5ra00587f. eCollection 2025 Apr 16.
Radio frequency identification (RFID) technology has made significant strides in recent years, opening up a world of possibilities for various industries. However, to achieve success, reliable and accurate real-time data is crucial. One exciting application of RFID technology is fast and wireless detection of gases. Hydrogen, in particular, is considered a clean fuel. However, it is highly flammable, and detecting it quickly and accurately is challenging in various industries. In this regard, our research focuses on developing a high-conductivity graphite paste for RFID tags integrated with a wireless hydrogen sensor based on nano-CeO-FeO-graphene oxide. In this work, we obtained a graphite paste using Ultra High Power (UHP) graphite electrodes with a high conductivity of 4.75 × 10 S cm for non-metallic substrates and 4 × 10 S cm with aluminum substrate. Furthermore, we incorporated a hydrogen gas detection sensor into the RFID tag utilizing graphene oxide and cerium oxide-iron oxide nanoparticles. The sensor demonstrated high sensitivity to low concentrations of H gas (1 ppm), with stable and repeatable performance. The wireless sensing response was evaluated through reflection coefficient ( ) measurements, confirming effective impedance matching between the RFID chip and antenna. Through this research, we aim to promote the advancement of RFID technology by introducing a low-cost, battery-free sensing platform using graphite and nano-engineered materials, suitable for diverse industrial applications.
近年来，射频识别（RFID）技术取得了重大进展，为各个行业开辟了一个充满可能性的世界。然而，要取得成功，可靠且准确的实时数据至关重要。RFID技术一个令人兴奋的应用是对气体进行快速无线检测。特别是氢气，被视为一种清洁燃料。然而，它高度易燃，在各个行业中快速准确地检测它具有挑战性。在这方面，我们的研究重点是开发一种用于RFID标签的高导电性石墨浆料，该浆料集成了基于纳米CeO-FeO-氧化石墨烯的无线氢气传感器。在这项工作中，我们使用超高功率（UHP）石墨电极获得了一种石墨浆料，对于非金属基板，其电导率为4.75×10 S cm，对于铝基板，电导率为4×10 S cm。此外，我们将氢气检测传感器集成到RFID标签中，利用氧化石墨烯和氧化铈-氧化铁纳米颗粒。该传感器对低浓度的H气体（1 ppm）表现出高灵敏度，具有稳定且可重复的性能。通过反射系数（）测量评估无线传感响应，证实了RFID芯片与天线之间有效的阻抗匹配。通过这项研究，我们旨在通过引入一种使用石墨和纳米工程材料的低成本、无电池传感平台来推动RFID技术的进步，该平台适用于各种工业应用。
