Surface-enhanced Raman scattering method for controlling catalytic activity of graphene oxide nanoribbon by using sodium tetraphenylborate ligand to measure K<+>

A graphene nanoribbon and surface-enhanced Raman technology, which is applied in the field of analytical chemistry to achieve the effect of simple method and high sensitivity

Inactive Publication Date: 2017-11-24
GUANGXI NORMAL UNIV
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But using sodium tetraphenylborate to control the catalytic activity of graphene oxide nanorib

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  • Surface-enhanced Raman scattering method for controlling catalytic activity of graphene oxide nanoribbon by using sodium tetraphenylborate ligand to measure K&lt;+&gt;

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[0024] A Kind of Using Sodium Tetraphenylborate Ligand to Regulate the Catalytic Activity of Graphene Oxide Nanobelts and Surface Enhanced Raman Spectroscopy to Determine K + The method includes the following steps:

[0025] (1) Prepare a known concentration of K + Standard solution system: In 7 graduated test tubes, add 10μL, 25μL, 100μL, 150μL, 250μL, 400μL, 600μL 10μmol / L K + Standard solution, then add 150μL 47.5ng / mL graphene oxide nanoribbons, 400μL 10μmol / L sodium tetraphenylborate solution, 50μL 0.3mol / L glucose, 150μL 1mmol / L AgNO into each graduated test tube. 3 React with 25μL 0.5mol / L NaOH solution in a 60℃ water bath for 5 minutes, shake well, then cool to room temperature with ice water, and then add 50μL 10μmoL / L Victoria Blue 4r solution, namely VB4r, and 100μL 1mol / L NaCl to each test tube. , Distilled water to make the volume to 2.0mL;

[0026] (2) Prepare blank control solution system: use step (1) without adding K + Standard solution preparation blank control sol...

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Abstract

The invention discloses a surface-enhanced Raman scattering method for controlling the catalytic activity of a graphene oxide nanoribbon by using a sodium tetraphenylborate ligand to measure K<+>. The method is characterized by comprising the following steps: (1) preparing a K<+> standard solution system with known concentration; (2) preparing a bank control solution system; (3) calculating deltaI=I-I0; (4) making a work curve for a concentration relationship of the K<+> by using deltaI; (5) calculating deltaIsample=Isample-I0; and (6) calculating the content of the K<+> of the sample solution according to the work curve in the step (4). According to the measurement method, the catalytic activity of nano-enzyme is controlled by adopting the ligand and the method is simple, convenient, fast and high in sensitivity.

Description

Technical field [0001] The invention relates to the field of analytical chemistry, in particular to the use of sodium tetraphenylborate ligand to regulate the catalytic activity of graphene oxide nanoribbons and surface-enhanced Raman Scattering (SERS) for determining K + Methods. Background technique [0002] Potassium ion (K + ) Is an important physiological element, and Na + Together, it plays an extremely important role in maintaining cell metabolism, regulating body fluid osmotic pressure, maintaining acid-base balance and maintaining cell stress functions. At the same time, potassium ions play different roles in the process of biological growth, including neurotransmission. , Enzyme activation, cell apoptosis, regulating blood pressure and the concentration of other ions in the cell. K between intracellular and extracellular fluid + Disturbance of ion concentration is always related to a series of diseases, including alcoholism, anorexia, excessive appetite, AIDS and kidney...

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Application Information

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IPC IPC(8): G01N21/65B82Y30/00B82Y40/00
Inventor 李重宁李丹蒋治良梁爱惠彭宇涛
Owner GUANGXI NORMAL UNIV
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