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An “On-Site Transformation” Strategy for Electrochemical Formation of TiO2 Nanoparticles/Ti3C2Tx MXene/Reduced Graphene Oxide Heterojunction Electrode Controllably toward Ultrasensitive Detection of Uric Acid
Small Structures ( IF 13.9 ) Pub Date : 2024-03-15 , DOI: 10.1002/sstr.202400034 Yangguang Zhu 1, 2 , Te‐Huan Liu 3 , Wenjiang Zhou 3, 4 , Mingjiao Shi 1 , Mengfan Wu 1 , Peizheng Shi 1 , Ningbin Zhao 1 , Xiufen Li 2 , Zhe Zhang 5 , Diming Zhang 6 , Yaokang Lv 7 , Wenqi Wu 8 , Hsu‐Sheng Tsai 9 , Guosong Lai 10 , Li Fu 11 , Hassan Karimi‐Maleh 12, 13 , He Li 1, 14 , Nan Jiang 1, 14 , Chen Ye 1, 14 , Cheng‐Te Lin 1, 14
Small Structures ( IF 13.9 ) Pub Date : 2024-03-15 , DOI: 10.1002/sstr.202400034 Yangguang Zhu 1, 2 , Te‐Huan Liu 3 , Wenjiang Zhou 3, 4 , Mingjiao Shi 1 , Mengfan Wu 1 , Peizheng Shi 1 , Ningbin Zhao 1 , Xiufen Li 2 , Zhe Zhang 5 , Diming Zhang 6 , Yaokang Lv 7 , Wenqi Wu 8 , Hsu‐Sheng Tsai 9 , Guosong Lai 10 , Li Fu 11 , Hassan Karimi‐Maleh 12, 13 , He Li 1, 14 , Nan Jiang 1, 14 , Chen Ye 1, 14 , Cheng‐Te Lin 1, 14
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Ascribing to the abundance of Ti element, exceptional electrical conductivity, and electrocatalytic performance, titanium carbide MXene (Ti3C2Tx, MX) is considered as an ideal conductive matrix and employed for in situ preparation of promising TiO2 NPs@MX/reduced graphene oxide (rGO) heterojunction electrodes for uric acid (UA) detection. However, the incapability of achieving the controllable growth and synthesis of TiO2 nanoparticles (NPs) on MX nanosheets is a bottleneck in fabricating optimal and controllable TiO2 NPs@MX hybrid. Herein, an “on-site transformation strategy” is developed to synthetize TiO2 NPs@MX/rGO heterojunction platform controllably by in situ electrochemical oxidizing MX nanosheets at various treatment times. The proposed approach allows for the greater operability to controllably grow and synthetize TiO2 NPs on the surface of MX nanosheets. The heterojunction electrodes present a linear voltammetric response toward UA in the concentration range of 0.003–0.3 and 0.3–300 μm and a low detection limit of 0.78 nm (S/N = 3). Additionally, a handheld electrochemical system with a smartphone readout is developed for point-of-care health monitoring, enabling fast, precise, and specific recognition of UA in real urine samples. The study provides a facile and controllable approach to fabricate TiO2 NPs@MX/rGO heterojunction platform for future use in other biomolecules' detection.
中文翻译：
可控电化学形成 TiO2 纳米颗粒/Ti3C2TX MXene/还原氧化石墨烯异质结电极以实现尿酸超灵敏检测的“现场转化”策略
由于丰富的Ti元素、优异的导电性和电催化性能，碳化钛MXene (Ti 3 C 2 T x , MX)被认为是理想的导电基质，可用于原位制备有前景的TiO 2 NPs@MX/用于尿酸（UA）检测的还原氧化石墨烯（rGO）异质结电极。然而，无法在MX纳米片上实现TiO 2纳米粒子（NPs）的可控生长和合成是制造最佳且可控的TiO 2 NPs@MX杂化物的瓶颈。在此，开发了一种“现场转化策略”，通过在不同处理时间原位电化学氧化MX纳米片来可控地合成TiO 2 NPs@MX/rGO异质结平台。所提出的方法允许更大的可操作性在MX纳米片表面上可控地生长和合成TiO 2 NP。异质结电极在 0.003-0.3 和 0.3-300 μm的浓度范围内对 UA 呈现线性伏安响应，检测限低至 0.78 nm ( S / N = 3)。此外，还开发了一种带有智能手机读数功能的手持式电化学系统，用于即时健康监测，从而能够快速、精确和特异性地识别真实尿液样本中的尿酸。该研究提供了一种简便且可控的方法来制造TiO 2 NPs@MX/rGO异质结平台，以供将来用于其他生物分子的检测。
更新日期：2024-03-15
中文翻译：
可控电化学形成 TiO2 纳米颗粒/Ti3C2TX MXene/还原氧化石墨烯异质结电极以实现尿酸超灵敏检测的“现场转化”策略
由于丰富的Ti元素、优异的导电性和电催化性能，碳化钛MXene (Ti 3 C 2 T x , MX)被认为是理想的导电基质，可用于原位制备有前景的TiO 2 NPs@MX/用于尿酸（UA）检测的还原氧化石墨烯（rGO）异质结电极。然而，无法在MX纳米片上实现TiO 2纳米粒子（NPs）的可控生长和合成是制造最佳且可控的TiO 2 NPs@MX杂化物的瓶颈。在此，开发了一种“现场转化策略”，通过在不同处理时间原位电化学氧化MX纳米片来可控地合成TiO 2 NPs@MX/rGO异质结平台。所提出的方法允许更大的可操作性在MX纳米片表面上可控地生长和合成TiO 2 NP。异质结电极在 0.003-0.3 和 0.3-300 μm的浓度范围内对 UA 呈现线性伏安响应，检测限低至 0.78 nm ( S / N = 3)。此外，还开发了一种带有智能手机读数功能的手持式电化学系统，用于即时健康监测，从而能够快速、精确和特异性地识别真实尿液样本中的尿酸。该研究提供了一种简便且可控的方法来制造TiO 2 NPs@MX/rGO异质结平台，以供将来用于其他生物分子的检测。
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