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在柔性基底上的激光诱导石墨烯电极上制造导电 Ag/AgCl/Ag 纳米棒墨水,用于非酶葡萄糖检测
Scientific Reports
(
IF
3.8
)
Pub Date : 2023-11-28
, DOI:
10.1038/s41598-023-48322-y
Rana Bagheri
1,
2
,
Saeid Alikhani
2
,
Ebrahim Miri-Moghaddam
1
Affiliation
- Department of Molecular Medicine, Faculty of Medicine, Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, 9717853577, Iran.
- Nanofanavaran partopooyesh Company, Science and Technology Park of South Khorasan, Birjand, 9718643683, Iran.
设计了一种不寻常的策略来制造柔性表面的导电图案,该图案用于非酶电流分析葡萄糖传感器。 Ag/AgCl/Ag 准参比墨水配方使用两种还原剂:NaBH \(_{4}\)和乙二醇。研究了墨水的参数,例如烧结时间和温度、NaBH \(_{4}\)浓度以及柔性激光诱导石墨烯(LIG)电极上涂层的层数。使用电化学和表面分析技术对导电 Ag/AgCl/Ag 墨水进行了表征。 Ag/AgCl/Ag NRs 的电催化活性可归因于其高表面积,为催化反应提供了大量的活性位点。研究了葡萄糖检测电极的选择性和灵敏度。 XRD 分析表明,Ag NR 上覆盖有 (200) 取向的 AgCl,并且随着 NaBH \(_{4}\)的添加,Ag NR 的峰强度增加。非酶传感器的线性范围较宽,为 0.003 至 0.18 mM 和 0.37 至 5.0 mM,检测下限分别为 10 \(\upmu\) M 和 20 \(\upmu\) M。实际样品中酶传感器的线性范围为 0.040 至 0.097 mM,检测限为 50 \(\upmu\) M。此外,干扰研究的结果表明 Ag/AgCl/Ag NRs/LIG 电极具有出色的选择性。柔性LIG电极上的Ag/AgCl/Ag NRs表现出优异的灵敏度、长期稳定性和重现性。高效的电活性被认为适合各种电化学应用和生物传感器。
"点击查看英文标题和摘要"
Fabrication of conductive Ag/AgCl/Ag nanorods ink on Laser-induced graphene electrodes on flexible substrates for non-enzymatic glucose detection
An unusual strategy was designed to fabricate conductive patterns for flexible surfaces, which were utilized for non-enzymatic amperometric glucose sensors. The Ag/AgCl/Ag quasi-reference ink formulation utilized two reducing agents, NaBH\(_{4}\) and ethylene glycol. The parameters of the ink, such as sintering time and temperature, NaBH\(_{4}\) concentration, and layer number of coatings on flexible laser-induced graphene (LIG) electrodes were investigated. The conductive Ag/AgCl/Ag ink was characterized using electrochemical and surface analysis techniques. The electrocatalytic activity of Ag/AgCl/Ag NRs can be attributed to their high surface area, which offer numerous active sites for catalytic reactions. The selectivity and sensitivity of the electrodes for glucose detection were investigated. The XRD analysis showed (200) oriented AgCl on covered Ag NRs, and with the addition of NaBH\(_{4}\), the intensity of the peaks of the Ag NRs increased. The wide linear range of non-enzymatic sensors was attained from 0.003 to 0.18 mM and 0.37 to 5.0 mM, with a low limit of detection of 10 \(\upmu\)M and 20 \(\upmu\)M, respectively.The linear range of enzymatic sensor in real sample was determined from 0.040 to 0.097 mM with a detection limit of 50 \(\upmu\)M. Furthermore, results of the interference studies demonstrated excellent selectivity of the Ag/AgCl/Ag NRs/LIG electrode. The Ag/AgCl/Ag NRs on the flexible LIG electrode exhibited excellent sensitivity,long-time stablity,and reproducibility. The efficient electroactivity were deemed suitable for various electrochemical applications and biosensors.
更新日期:2023-11-28