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Self-Reducing Prussian Blue on Ti3C2Tx MXene Nanosheets as a Dual-Functional Nanohybrid for Hydrogen Peroxide and Pesticide Sensing
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-08-09 , DOI: 10.1021/acs.iecr.0c02154
Ying He 1 , Xitong Zhou 1 , Liya Zhou 1 , Xiaoning Zhang 1 , Li Ma 1 , Yanjun Jiang 1, 2 , Jing Gao 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-08-09 , DOI: 10.1021/acs.iecr.0c02154
Ying He 1 , Xitong Zhou 1 , Liya Zhou 1 , Xiaoning Zhang 1 , Li Ma 1 , Yanjun Jiang 1, 2 , Jing Gao 1
Affiliation
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Prussian blue (PB)–Ti3C2Tx hybrid composites (PB@Ti3C2Tx) with peroxidase-like activity were prepared via a mild and green approach, in which Ti3C2Tx acted as a reducing agent, and the multilayer 2D nanostructure could effectively keep the PB nanoparticles away from aggregation. We fabricated a facile colorimetric biosensor for H2O2 detection to demonstrate the peroxidase-like activity of PB@Ti3C2Tx, and the results indicated favorable linearity of H2O2. The KMapp value of PB@Ti3C2Tx for TMB and H2O2 was 0.0134 mM and 0.162 mM, respectively, which was better than that of horseradish peroxidase (HRP). Moreover, we also fabricated a biosensor by immobilizing acetylcholinesterase (AChE) on the PB@Ti3C2Tx-modified electrode. PB@Ti3C2Tx not only has good biocompatibility for AChE but also can obtain a detectable signal at lower applied potential (from 0.73 to 0.2 V). A good linearity of malathion was obtained in the range from 1.0 × 10–15 to 1.0 × 10–9 M with a detection limit of 1.3 × 10–16 M.
中文翻译:
Ti 3 C 2 T x MXene纳米片上的自还原普鲁士蓝,作为过氧化氢和农药感测的双重功能纳米杂化物
采用温和绿色的方法制备了具有过氧化物酶活性的普鲁士蓝(PB)-Ti 3 C 2 T x杂化复合材料(PB @ Ti 3 C 2 T x),其中Ti 3 C 2 T x用作还原性多层二维纳米结构可以有效地使PB纳米颗粒远离聚集。我们制造了一种用于H 2 O 2检测的简便的比色生物传感器,以证明PB @ Ti 3 C 2 T x的过氧化物酶活性,结果表明H 2 O具有良好的线性2。PB @ Ti 3 C 2 T x的TMB和H 2 O 2的K Mapp值分别为0.0134 mM和0.162 mM,优于辣根过氧化物酶(HRP)。此外,我们还通过将乙酰胆碱酯酶(AChE)固定在PB @ Ti 3 C 2 T x修饰的电极上来制造生物传感器。PB @ Ti 3 C 2 T x不仅对AChE具有良好的生物相容性,而且可以在较低的施加电势(0.73至0.2 V)下获得可检测的信号。马拉硫磷具有良好的线性,范围为1.0×10 –15到1.0×10 –9 M,检测极限为1.3×10 –16M。
更新日期:2020-08-09
中文翻译:
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Ti 3 C 2 T x MXene纳米片上的自还原普鲁士蓝,作为过氧化氢和农药感测的双重功能纳米杂化物
采用温和绿色的方法制备了具有过氧化物酶活性的普鲁士蓝(PB)-Ti 3 C 2 T x杂化复合材料(PB @ Ti 3 C 2 T x),其中Ti 3 C 2 T x用作还原性多层二维纳米结构可以有效地使PB纳米颗粒远离聚集。我们制造了一种用于H 2 O 2检测的简便的比色生物传感器,以证明PB @ Ti 3 C 2 T x的过氧化物酶活性,结果表明H 2 O具有良好的线性2。PB @ Ti 3 C 2 T x的TMB和H 2 O 2的K Mapp值分别为0.0134 mM和0.162 mM,优于辣根过氧化物酶(HRP)。此外,我们还通过将乙酰胆碱酯酶(AChE)固定在PB @ Ti 3 C 2 T x修饰的电极上来制造生物传感器。PB @ Ti 3 C 2 T x不仅对AChE具有良好的生物相容性,而且可以在较低的施加电势(0.73至0.2 V)下获得可检测的信号。马拉硫磷具有良好的线性,范围为1.0×10 –15到1.0×10 –9 M,检测极限为1.3×10 –16M。