Bonando Matheus Guitti, Mór Moreira Gabriel Monte, Moraes Fernandes Nathália Maria, Steinberg David, Cadore Alisson Ronieri, de Carvalho Castro Silva Cecília, Miyazato Saito Lúcia Akemi
Mackenzie School of Engineering, Mackenzie Presbyterian University Rua da Consolação, 896, CEP: 01302-907 São Paulo/SP Brazil
Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Laboratório de Química de Calixarenos, Espectroscopia Molecular e Catálise Brazil.
Nanoscale Adv. 2024 Jul 17;6(18):4604-4610. doi: 10.1039/d4na00385c. eCollection 2024 Sep 10.
In this work, we demonstrate the impact of the photothermal reduction quality of graphene oxide (GO), which is affected by the material composition, roughness, and thermal properties of the membrane substrates. We show high efficiency reduced graphene oxide (rGO) conversion by applying a 405 nm pulsed laser in ambient conditions onto different flexible substrates. Three filter membranes, such as nylon, cellulose acetate, and nitrocellulose, are used as rGO thin film substrates, achieving sheet resistance of 51 ± 2, 58 ± 3, and 620 ± 40 Ω sq, respectively, which has been the lowest resistance reported in ambient conditions. Finally, we demonstrate that such flexible materials can be applied as temperature sensors ranging from 35 °C to 100 °C. The best sensitivity is achieved using nylon membranes, showing a smoother rGO surface and lower defect density.
在这项工作中，我们展示了氧化石墨烯（GO）的光热还原质量受到膜基底材料组成、粗糙度和热性能的影响。我们通过在环境条件下将405nm脉冲激光应用于不同的柔性基底上，展示了高效还原氧化石墨烯（rGO）的转化。使用三种滤膜，如尼龙、醋酸纤维素和硝化纤维素作为rGO薄膜基底，分别实现了51±2、58±3和620±40Ω/sq的方块电阻，这是在环境条件下报道的最低电阻。最后，我们证明了这种柔性材料可作为温度传感器应用于35°C至100°C的范围。使用尼龙膜实现了最佳灵敏度，其rGO表面更光滑，缺陷密度更低。
