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A Simple and Fast Method for Detecting CTAB

A fast and simple technology, applied in the chemical industry, can solve problems that need to be further improved, and achieve the effects of large-scale synthesis, simple operation, and low cost

Active Publication Date: 2022-03-11
HUNAN UNIV OF SCI & TECH
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Problems solved by technology

At present, there are many methods for synthesizing silver nanoclusters, such as chemical reduction method, photoreduction method, template method, radiation method, ultrasonic method, inverse microemulsion method, etc. These synthesis methods still need to be improved in terms of synthesis efficiency, reproducibility, and stability. Further improve

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  • A Simple and Fast Method for Detecting CTAB
  • A Simple and Fast Method for Detecting CTAB
  • A Simple and Fast Method for Detecting CTAB

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with specific experimental examples.

[0017] (1) Preparation of the solution used:

[0018] Preparation of Nuclear Fast Red Solution: Accurately weigh 0.0357 g of solid Nuclear Fast Red and prepare 1.0×10 -3 mol / L solution, use this as the mother solution, and then dilute the solution to the required concentration when used.

[0019] AgNO 3 Solution preparation: Accurately weigh AgNO 3 Solid 0.0849g, prepared as AgNO with a concentration of 0.01mol / L 3 50mL of the solution is used as the mother liquor, and the solution is diluted to the required concentration when used.

[0020] NaBH 4 Solution preparation: Accurately weigh 0.7566g of NaBH 4 The solid is prepared into a 0.8mol / L solution, which is used as the mother solution, and the solution is diluted to the required concentration when used.

[0021] Preparation of NaOH solution: Accurately weigh 2.0 g of NaOH solid to prepare a 0.2...

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Abstract

The invention provides a simple and fast method for detecting CTAB, using nuclear fast red as a stabilizer, AgNO 3 and NaBH 4 As the reaction reagent, AgNCs were prepared by chemical reduction method. AgNCs exhibit strong fluorescence emission at 500 nm when excited at 370 nm. The study found that when cetyltrimethylammonium bromide (CTAB) was added to the AgNCs solution, the fluorescence intensity of AgNCs was effectively quenched. When the CTAB concentration was in the range of 0.01‑1.0 mmol / L, the silver nanoclusters The reduction degree of fluorescence intensity has a good linear relationship with it, and the detection limit is 6.1´10 ‑9 mol / L.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a stabilizer, AgNO 3 and NaBH 4 As the reaction reagent, AgNCs were prepared by chemical reduction method. And applied to the detection of cetyltrimethylammonium bromide (CTAB). Background technique [0002] Noble metal nanoclusters have become one of the hotspots in the field of nanomaterials research in recent years due to their unique optical, electrical and chemical properties due to the quantum size effect and small size effect. Its small size, non-toxicity and photostability make it a new type of fluorescent probe with broad application prospects in chemical detection, biomarking, catalysis and other fields. At present, there are many methods for synthesizing silver nanoclusters, such as chemical reduction method, photoreduction method, template method, radiation method, ultrasonic method, inverse microemulsion method, etc. These synthesis methods still need ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64B82Y15/00B82Y40/00
CPCG01N21/6428B82Y15/00B82Y40/00G01N2021/6432
Inventor 龙云飞舒鑫宇孟婉婷朱含芳陈述
Owner HUNAN UNIV OF SCI & TECH
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