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Application of branched titanium dioxide nanorod array material in enrichment and detection of heavy metal lead

A nanorod array and titanium dioxide technology, which is applied in the field of composite materials, can solve the problems of interference in analysis and detection, low content of heavy metals in samples, and difficulty in detection, and achieve the effects of simple method, improved accuracy and sensitivity, and high specificity.

Pending Publication Date: 2022-06-17
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the diversity of samples with heavy metals, it will cause certain interference to the analysis and detection, and the content of heavy metals in the samples is very low. During the analysis and detection, if the sensitivity of the corresponding method is not reached, it is not easy to detect.
However, there are no relevant reports on the application of titanium dioxide nanorod array materials in the extraction of heavy metals.

Method used

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  • Application of branched titanium dioxide nanorod array material in enrichment and detection of heavy metal lead
  • Application of branched titanium dioxide nanorod array material in enrichment and detection of heavy metal lead
  • Application of branched titanium dioxide nanorod array material in enrichment and detection of heavy metal lead

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Embodiment Construction

[0036] The preparation of branched titanium dioxide nanorod array materials and the performance for enrichment and detection of lead ions in complex samples will be further described below through specific examples.

[0037] 1. Preparation of branched TiO2 nanorod array materials

[0038](1) Put the 2.5cm×5cm FTO conductive glass into ultrapure water, acetone, and ethanol for ultrasonic cleaning, and then dry it for later use;

[0039] (2) At room temperature, in a polytetrafluoroethylene lining, 50 mL of ultrapure water and 50 mL of concentrated hydrochloric acid (36.5%) were mixed and stirred for 5 minutes, and then 1.2 mL of tetrabutyl titanate was added and stirred for 5 minutes. The resulting mixed solution was Precursor liquid for preparing titanium dioxide nanorods;

[0040] (3) Put the above-mentioned ultrasonically cleaned FTO conductive glass sheet into the PTFE lining (the glass sheet is placed diagonally downward and the conductive surface is facing down), and the...

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Abstract

The invention discloses an application of a branched titanium dioxide nanorod array material in enrichment and detection of heavy metal lead, which comprises the following steps: placing the branched titanium dioxide nanorod array material in a solution to be detected, and oscillating and enriching; after the enrichment liquid is separated, an eluent is added into the lead-enriched branched titanium dioxide nanorod array material for oscillation elution, and then the lead enrichment liquid is obtained. Research finds that the characteristic that a large number of hydroxyl groups in the branched titanium dioxide nanorod material can be complexed with lead ions realizes high-efficiency, low-cost and specific enrichment and separation of the lead ions, so that the branched titanium dioxide nanorod material can be used as an adsorbent to be applied to rapid extraction and trace detection of heavy metal lead in food or environmental water samples; a novel material and a technical method are provided for analysis and detection of lead in a complex sample.

Description

technical field [0001] The invention relates to the preparation of a titanium dioxide nanorod array material, in particular to a preparation method of a branched titanium dioxide nanorod array material, which is mainly used as an adsorbent for rapid extraction and trace detection of heavy metal lead in food or environmental water samples. It belongs to the technical field of composite materials and the technical field of analysis and detection. Background technique [0002] With the continuous development of industrial technology, various environmental pollution problems, especially heavy metal pollution, are becoming more and more serious. Heavy metal elements are a kind of toxic pollutants that cannot be degraded. They are highly toxic and harmful to the environment. They can enter the human body through the food chain and accumulate continuously, posing potential threats to the ecological environment and human health. Therefore, in order to protect human health, it is pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/40G01N21/73C03C17/34B82Y15/00B82Y30/00
CPCG01N1/405G01N21/73C03C17/3417C03C17/001C03C17/006B82Y15/00B82Y30/00C03C2217/94C03C2217/40
Inventor 师彦平丁玉竹康晶燕
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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