A method for treating heavy metals and organic pollutants using zero-dimensional black phosphorus quantum dots/one-dimensional tubular carbon nitride composite photocatalyst

A technology of organic pollutants and zero-dimensional black phosphorus, applied in physical/chemical process catalysts, chemical instruments and methods, and water treatment of special compounds, can solve problems such as insufficient photocatalytic activity, complicated preparation process, and low treatment efficiency. Achieve high use value, simple process and good removal effect

Active Publication Date: 2021-01-08
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing photocatalytic treatment methods for heavy metals and organic pollution still have low treatment efficiency, mainly due to the insufficient photocatalytic activity and poor stability of existing photocatalysts.
In addition, the photocatalysts used in the prior art have disadvantages such as complicated preparation process, long time consumption, and secondary pollution to the environment.

Method used

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  • A method for treating heavy metals and organic pollutants using zero-dimensional black phosphorus quantum dots/one-dimensional tubular carbon nitride composite photocatalyst
  • A method for treating heavy metals and organic pollutants using zero-dimensional black phosphorus quantum dots/one-dimensional tubular carbon nitride composite photocatalyst
  • A method for treating heavy metals and organic pollutants using zero-dimensional black phosphorus quantum dots/one-dimensional tubular carbon nitride composite photocatalyst

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Effect test

Embodiment 1

[0053] A method for treating heavy metals using a zero-dimensional black phosphorus quantum dot / one-dimensional tubular carbon nitride composite photocatalyst, specifically: using a zero-dimensional black phosphorus quantum dot / one-dimensional tubular carbon nitride composite photocatalyst to treat hexavalent metals in water Chromium ions are subjected to photocatalytic reduction treatment, including the following steps:

[0054] Weigh zero-dimensional black phosphorus quantum dots / one-dimensional tubular carbon nitride composite photocatalyst (BPTCN-8, BPTCN-10, BPTCN-12), layered carbon nitride (CN), one-dimensional tubular carbon nitride (TCN) and zero-dimensional black phosphorus quantum dots / layered carbon nitride composite photocatalyst (BPCN), each 30mg, placed in 30mL, concentration is 10mg / L heavy metal hexavalent chromium ion solution (the pH value of this solution is 4.65) respectively , the reaction system is placed in a visible light source (300W xenon lamp) to ca...

Embodiment 2

[0084] A method for treating heavy metals using a zero-dimensional black phosphorus quantum dot / one-dimensional tubular carbon nitride composite photocatalyst, specifically: using a zero-dimensional black phosphorus quantum dot / one-dimensional tubular carbon nitride composite photocatalyst to treat hexavalent metals in water Chromium ions are subjected to photocatalytic reduction treatment, including the following steps:

[0085] Weigh 4 parts of zero-dimensional black phosphorus quantum dots / one-dimensional tubular carbon nitride composite photocatalyst (BPTCN-10) prepared in Example 1, each part 30mg, place pH value respectively at 5.65, 4.65, 3.65, 2.65 In the heavy metal hexavalent chromium ion solution (the volume of these solutions is 30mL, and the concentration is 10mg / L), the reaction system is placed in a visible light source (300W xenon lamp) to carry out the photocatalytic reduction reaction for 60min, and the reaction to the heavy metal hexavalent chromium is comple...

Embodiment 3

[0093] A method for treating organic pollutants using a zero-dimensional black phosphorus quantum dot / one-dimensional tubular carbon nitride composite photocatalyst, specifically: using a zero-dimensional black phosphorus quantum dot / one-dimensional tubular carbon nitride composite photocatalyst to treat organic pollutants in water Oxytetracycline hydrochloride, tetracycline and rhodamine B are respectively subjected to photocatalytic degradation treatment, comprising the following steps:

[0094] Take the zero-dimensional black phosphorus quantum dot / one-dimensional tubular carbon nitride composite photocatalyst (BPTCN-10), layered carbon nitride (CN), and one-dimensional tubular carbon nitride (TCN) obtained in embodiment 1, Each 30mg is placed in oxytetracycline hydrochloride waste water (the volume of this waste water is 30mL, and concentration is 10mg / L), tetracycline waste water (the volume of this waste water is 30mL, and concentration is 20mg / L) and rhodamine B waste wa...

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Abstract

The invention discloses a method for treating heavy metals and organic pollutants by using zero-dimensional black phosphorus quantum dots / one-dimensional tubular carbon nitride composite photocatalyst. According to the method, the zero-dimensional black phosphorus quantum dots / one-dimensional tubular carbon nitride composite photocatalyst are adopted to treat heavy metals and organic pollutants, the zero-dimensional black phosphorus quantum dots / one-dimensional tubular carbon nitride composite photocatalyst comprises one-dimensional tubular carbon nitride, and the one-dimensional tubular carbon nitride is modified with zero-dimensional black phosphorus quantum dots. According to the method, heavy metals and organic pollutants are treated by adopting the zero-dimensional black phosphorus quantum dots / one-dimensional tubular carbon nitride composite photocatalyst, the heavy metals and organic pollutants are removed effectively; the method has the advantages of being simple in process, convenient to operate, low in equipment requirement, low in cost, high in treatment efficiency, good in removal effect, free of secondary pollution and the like, and has very high use value and very good application prospects.

Description

technical field [0001] The invention belongs to the field of visible light catalysis, and relates to a method for treating heavy metals and organic pollutants by using a zero-dimensional black phosphorus quantum dot / one-dimensional tubular carbon nitride composite photocatalyst. Background technique [0002] In recent years, news of "super bacteria" has frequently jumped into people's field of vision, making people realize that it is imminent to solve the problem of antibiotic sewage pollution. Certain microorganisms and plants secrete certain metabolites during their metabolism, which can inhibit the growth of surrounding organisms and even cause them to die. People call such metabolites vividly antibiotics. The discovery and application of antibiotics have successfully saved the lives of countless people and ensured the economic benefits of many livestock and aquatic organisms. However, the long-term abuse of antibiotics will also endanger the environment and human health....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/14B01J27/24B01J35/00B01J35/10C02F1/30C02F1/70C02F101/22C02F101/30C02F101/38C02F101/34
CPCB01J27/14B01J27/24B01J35/004B01J35/10C02F1/30C02F1/70C02F2101/22C02F2101/308C02F2101/34C02F2101/38C02F2305/10
Inventor 汪文军曾光明张辰周成赟杨洋熊炜平李晓沛宋彪陈亚诗罗晗倬贺东辉田苏红李旭波
Owner HUNAN UNIV
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