scholarly journals 3D Hydrogen Titanate Nanotubes on Ti Foil: A Carrier for Enzymatic Glucose Biosensor

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 1024 ◽  
Author(s):  
Lulu Ma ◽  
Zhao Yue ◽  
Guona Huo ◽  
Shasha Zhang ◽  
Baolin Zhu ◽  
...  
Keyword(s):  
Glucose Oxidase ◽  
Linear Response ◽  
High Selectivity ◽  
3D Structure ◽  
Glucose Biosensor ◽  
Titanate Nanotubes ◽  
Cross Linking ◽  
In Situ Fabrication ◽  
Hydrogen Titanate

Glucose oxidase (GOx) based biosensors are commercialized and marketed for the high selectivity of GOx. Incorporation nanomaterials with GOx can increase the sensitivity performance. In this work, an enzyme glucose biosensor based on nanotubes was fabricated. By using Ti foil as a carrier, hydrogen titanate nanotubes (HTNTs), which present fine 3D structure with vast pores, were fabricated in-situ by the hydrothermal treatment. The multilayer nanotubes are open-ended with a diameter of 10 nm. Then glucose oxidase (GOx) was loaded on the nanotubes by cross-linking to form an electrode of the amperometric glucose biosensor (GOx/HTNTs/Ti electrode). The fabricated GOx/HTNTs/Ti electrode had a linear response to 1–10 mM glucose, and the response time was 1.5 s. The sensitivity of the biosensor was 1.541 μA·mM-1·cm-2, and the detection limit (S/N = 3) was 59 μM. Obtained results indicate that the in-situ fabrication and unique 3D structure of GOx/HTNTs/Ti electrode are beneficial for its sensitivity.

scholarly journals Printed 2D Proton Sensor for In-Situ Measurement in Glue Lines

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 990 ◽  
Author(s):  
Matic Krivec ◽  
Thomas Stockinger ◽  
Johanna Zikulnig ◽  
Friedrich Eibenst ◽  
Uwe Müller
Keyword(s):  
Cross Talk ◽  
Linear Response ◽  
Ph Sensor ◽  
In Situ Measurements ◽  
Cross Linking ◽  
Sensitive Material ◽  
Signal Change ◽  
Ph Range ◽  
Pani Layer

A screen printed pH sensor was developed using a PANI layer as a proton sensitive material for the in-situ measurements of matrix cross-linking. The sensor showed a linear response in a broad pH range (3–10) and had an evident cross-talk to Cl− ions. Preliminary in-situ measurements showed a substantial signal change during the cross-linking process.

A recyclable colorimetric probe: in situ fabrication of highly stable HPEI–AuNPs for selective Ag+ detection

2020 ◽  
Vol 44 (14) ◽  
pp. 5438-5447 ◽  
Author(s):  
Jie Bian ◽  
Yunxia Xia ◽  
Luyan Sang ◽  
Chenxue Zhu ◽  
Yuxi Li ◽  
...  
Keyword(s):  
High Selectivity ◽  
Reduction Reaction ◽  
Colorimetric Sensor ◽  
Colorimetric Probe ◽  
In Situ Fabrication

A highly stable and recyclable AuNP-based colorimetric sensor was prepared by an in situ reduction reaction and can detect Ag+ with high selectivity.

Temperature-induced amperometric glucose biosensor based on a poly(N-vinylcaprolactam)/graphene oxide composite film

The Analyst ◽  
2019 ◽  
Vol 144 (6) ◽  
pp. 1960-1967 ◽  
Author(s):  
Chao Chen ◽  
Pengcheng Zhao ◽  
Meijun Ni ◽  
Chunyan Li ◽  
Yixi Xie ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Composite Film ◽  
Glucose Oxidase ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Glucose Biosensor ◽  
Carbon Electrode ◽  
Oxide Composite

A temperature-induced sensing film consisting of poly(N-vinylcaprolactam) (PVCL), graphene oxide (GO) and glucose oxidase (GOD) was fabricated and used to modify a glassy carbon electrode (GCE).

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