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Preparation method of GO/MoS2 electrode for removing lead ions in water by electrochemical method

An electrochemical, lead ion technology, applied in the field of materials, can solve the problem of less lead ions removed by capacitive deionization

Pending Publication Date: 2020-06-19
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no reports of related materials used in capacitive deionization technology, and there are few reports on the removal of lead ions by capacitive deionization

Method used

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  • Preparation method of GO/MoS2 electrode for removing lead ions in water by electrochemical method
  • Preparation method of GO/MoS2 electrode for removing lead ions in water by electrochemical method
  • Preparation method of GO/MoS2 electrode for removing lead ions in water by electrochemical method

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specific Embodiment approach 1

[0021] Specific embodiment one: a kind of GO / MoS that removes lead ions in water body by electrochemical method in this embodiment 2 Electrode preparation method, it is carried out according to the following steps:

[0022] 1. Preparation of Graphene Oxide

[0023] Take graphite powder and sodium nitrate, add H under ice bath conditions 2 SO 4 Stir well, then add KMnO 4 , stirred in a water bath at 36°C for 1h to form a viscous slurry; then added deionized water to the slurry, stirred at a temperature of 90°C for 15min, added deionized water, and added H 2 o 2 , the solution turns from dark brown to yellow; wash and filter with 1M hydrochloric acid, wash with deionized water repeatedly until the product turns from yellow to black, and the black product is dispersed in deionized water at 4000rpm·min -1 Centrifuge for 5 minutes to remove the particles in the lower layer, repeat the washing 4-5 times until there are no particles, 8000rmp·min -1 Centrifuge at high speed for ...

specific Embodiment approach 2

[0032] Specific embodiment two: the difference between this embodiment and specific embodiment one is: H 2 SO 4 The mass percent composition of is 98wt%. The other specific embodiments are the same.

specific Embodiment approach 3

[0033] Specific embodiment three: the difference between this embodiment and specific embodiment one is: KMnO 4 Add slowly. The other specific embodiments are the same.

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Abstract

The invention discloses a preparation method of a GO / MoS2 electrode for removing lead ions in water by an electrochemical method. The invention relates to the field of materials, and aims to provide amethod for removing lead from a GO / MoS2 composite material by capacitance deionization, which combines graphene with MoS2 by a hydrothermal method and is applied to capacitance removal of Pb (II) forthe first time. By adding graphene, stacking of MoS2 is avoided, the contact surface area of MoS2 and lead ions is increased, MoS2 with high intrinsic ionic conductivity can provide higher specific capacitance, and a good effect on lead ion removal is achieved. The synthesis method has the advantages of simplicity, greenness and high efficiency, and is applied to the field of electrodes.

Description

technical field [0001] The invention relates to the field of materials, in particular to a GO / MoS that removes lead ions in water by electrochemical methods 2 Electrode preparation method. Background technique [0002] With economic development, water pollution caused by industrial production and domestic wastewater discharge is becoming more and more serious, especially heavy metal pollution. Among heavy metals, lead and its compounds cause harm to multiple systems such as nerves and hematopoiesis. In recent years, the removal of lead ions much attention. There are many methods to deal with the heavy metal lead (Pb(II)), including chemical precipitation, biological and electrochemical methods. Among the electrochemical methods, capacitive deionization (CDI) has been widely recognized by researchers for its advantages of energy saving, low cost, no secondary pollution, and reproducible electrode reverse connection or short connection. Molybdenum disulfide (MoS 2 ), is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C01B32/198C01G39/06
CPCC01G39/06C01P2002/72C01P2004/04C01P2004/80C02F1/46109C02F2001/46138C02F2101/20C01B32/198
Inventor 于洪文王一明
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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