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Femtosecond Laser One-Step Direct Writing Electrodes with Ag NPs-Graphite Carbon Composites for Electrochemical Sensing
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2022-06-28 , DOI: 10.1002/admt.202200210
Jiahua He 1 , Sumei Wang 1 , Lan Jiang 1, 2 , Xin Li 1 , Quan Hong 1 , Weihua Zhu 1 , Jiaxin Sun 1 , Xueqiang Zhang 1 , Zhao Xu 1
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2022-06-28 , DOI: 10.1002/admt.202200210
Jiahua He 1 , Sumei Wang 1 , Lan Jiang 1, 2 , Xin Li 1 , Quan Hong 1 , Weihua Zhu 1 , Jiaxin Sun 1 , Xueqiang Zhang 1 , Zhao Xu 1
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The next generation of green electronic products will be flexible, eco-friendly, have arbitrary patterning, and be produced using simple methods. Here, a silver nanoparticles (Ag NPs)–graphite carbon composite-based electrochemical sensor is patterned on a flexible substrate by one-step in situ femtosecond (fs) laser fabrication. Alkali lignin is used as a precursor and nontoxic natural reducing agent to reduce aqueous silver nitrate to produce Ag NPs. The fs laser carbonization process converts lignin into graphite carbon electrodes with diverse three-dimensional (3D) micro/nano morphologies, causing less thermal damage to the Ag NPs and thin substrate. The 3D micro/nano morphologies combined with Ag NPs effectively increase the active surface area, conductivity, and catalytic activity of the electrode, which is further applied as an electrochemical sensor. This sensor has a wide linear detection range of nitrite from 1–4000 × 10−6 m, a detection limit of 0.117 × 10−6 m (S/N = 3), and long lifetime of 30 days. The sensor also has the potential to detect dopamine (DA). A detection limit of 0.098 × 10−6 m (S/N = 3) is obtained, with a linear detection range of 1–45 × 10−6 m. The sensor demonstrates a wide range of applications in food safety and human health-related detection.
中文翻译：
用于电化学传感的具有 Ag NPs-石墨碳复合材料的飞秒激光一步直写电极
下一代绿色电子产品将灵活、环保、具有任意图案，并使用简单的方法生产。在这里，通过一步原位飞秒（fs）激光制造在柔性基板上图案化银纳米颗粒（Ag NPs）-石墨碳复合材料电化学传感器。碱木质素用作前体和无毒的天然还原剂，以还原硝酸银水溶液以生产 Ag NPs。fs 激光碳化工艺将木质素转化为具有多种三维 (3D) 微/纳米形态的石墨碳电极，从而减少对 Ag NP 和薄基板的热损伤。3D 微/纳米形态与 Ag NPs 相结合，有效地增加了电极的活性表面积、电导率和催化活性，进一步用作电化学传感器。该传感器具有 1–4000 × 10 的宽亚硝酸盐线性检测范围-6 m，检测限为 0.117 × 10 -6 m (S/N = 3)，使用寿命长达 30 天。该传感器还具有检测多巴胺 (DA) 的潜力。检测限为 0.098 × 10 -6 m (S/N = 3)，线性检测范围为 1-45 × 10 -6 m。该传感器展示了在食品安全和人体健康相关检测中的广泛应用。
更新日期：2022-06-28
中文翻译：
用于电化学传感的具有 Ag NPs-石墨碳复合材料的飞秒激光一步直写电极
下一代绿色电子产品将灵活、环保、具有任意图案，并使用简单的方法生产。在这里，通过一步原位飞秒（fs）激光制造在柔性基板上图案化银纳米颗粒（Ag NPs）-石墨碳复合材料电化学传感器。碱木质素用作前体和无毒的天然还原剂，以还原硝酸银水溶液以生产 Ag NPs。fs 激光碳化工艺将木质素转化为具有多种三维 (3D) 微/纳米形态的石墨碳电极，从而减少对 Ag NP 和薄基板的热损伤。3D 微/纳米形态与 Ag NPs 相结合，有效地增加了电极的活性表面积、电导率和催化活性，进一步用作电化学传感器。该传感器具有 1–4000 × 10 的宽亚硝酸盐线性检测范围-6 m，检测限为 0.117 × 10 -6 m (S/N = 3)，使用寿命长达 30 天。该传感器还具有检测多巴胺 (DA) 的潜力。检测限为 0.098 × 10 -6 m (S/N = 3)，线性检测范围为 1-45 × 10 -6 m。该传感器展示了在食品安全和人体健康相关检测中的广泛应用。
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