Preparation method of nano-silver modified two-dimensional black phosphorus composite material and application of nano-silver modified two-dimensional black phosphorus composite material in efficient photocatalytic degradation of antibiotic pollutants

A composite material and nano-silver technology, which is applied in water pollutants, chemical/physical processes, special compound water treatment, etc., to achieve good degradation effect, fast degradation speed, and simple operation process

Inactive Publication Date: 2019-04-19
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

But so far, the photocatalytic degradation of antibiotic pollutants using nano-silver-modified two-dimensional black phosphorus composites as degradation materials has not been reported, so it has high research value

Method used

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  • Preparation method of nano-silver modified two-dimensional black phosphorus composite material and application of nano-silver modified two-dimensional black phosphorus composite material in efficient photocatalytic degradation of antibiotic pollutants
  • Preparation method of nano-silver modified two-dimensional black phosphorus composite material and application of nano-silver modified two-dimensional black phosphorus composite material in efficient photocatalytic degradation of antibiotic pollutants

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Embodiment 1

[0029] 1. Add black phosphorus crystal powder into NMP, and perform ultrasonic crushing and peeling. The conditions for ultrasonic crushing and peeling are 700W, 22KHz ultrasonic for 3h, working for 2s and intermittent for 2s, so that it can be converted into a two-dimensional black phosphorus material; Centrifuge at 6000-8000rpm for 20-24min, collect the supernatant, and obtain the precursor of the two-dimensional black phosphorus nanosheet; the precursor of the two-dimensional black phosphorus nanosheet is subjected to secondary centrifugation at 10000-14000rpm, and the centrifugation time is After 20-24min, a solid precipitate is obtained, which is a two-dimensional black phosphorus nanosheet;

[0030] 2. Add 2mL, 1.5μM sodium borohydride to 5mL, 5mg / L two-dimensional black phosphorus nanosheet dispersion under ice bath conditions and stir, then add 1mL, 2μM dissolved silver nitrate to react, stir at room temperature for 2h, then Centrifuge at 12000 rpm for 22 minutes to ob...

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Abstract

The invention relates to a preparation method of a nano-silver modified two-dimensional black phosphorus composite material and an application of the nano-silver modified two-dimensional black phosphorus composite material in efficient photocatalytic degradation of antibiotic pollutants. The method comprises the following steps of: taking the nano-silver modified two-dimensional black phosphorus composite material as a degradation material, adding the nano-silver modified two-dimensional black phosphorus composite material into wastewater containing antibiotic pollutants, uniformly mixing, andcarrying out magnetic stirring reaction under the condition of ultraviolet light irradiation so as to complete the degradation and removal of antibiotic pollutants in the wastewater. The method provided by the invention has the advantages of simple preparation process, high degradation speed and high degradation efficiency; the prepared nano-silver modified two-dimensional black phosphorus composite material has higher specific surface area and photocatalytic activity, is used for carrying out high-efficiency photocatalytic degradation on fluoroquinolone antibiotics such as norfloxacin in wastewater, and has important application prospect and commercial value in the aspect of treating the wastewater containing antibiotics.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to the preparation of a nano-silver modified two-dimensional black phosphorus composite material and its application for efficient photocatalytic degradation of antibiotic pollutants. Background technique [0002] In recent years, antibiotic compounds have been continuously detected in natural water bodies, soils and sediments. These compounds have attracted extensive attention from scientists and have become a new type of environmental pollutants. Studies have shown that the environmental fate of antibiotics mainly depends on the photocatalytic degradation and adsorption process, and photocatalytic degradation is one of the important ways for antibiotic pollutants to disappear in the environment. [0003] With the successful preparation of graphene-based two-dimensional materials in recent years, and their superior chemical properties have been reported. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/14C02F1/32C02F101/30
CPCB01J27/14B01J35/004C02F1/32C02F2101/30C02F2305/10
Inventor 郭志陈鹏崔康平许为义刘灵芝刘晓薇朱承驻郭万茹
Owner HEFEI UNIV OF TECH
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