Study On Electrocatalytic Degradation Of 2,4-Dichlorophenol By Nickel(Cobalt)Phosphide

Chlorop Henol organics are widespread in nature and are typical substances in refractory organic pollutants.They are often used in various chemical materials and intermediates.Due to the excessive production of chlorine-containing organics,this toxic substance is leading to serious pollution,which harmful to the environment and human health.The degradation of chlorinated organics has become a hotspot in water treatment research and a key topic in the field of environmental management.In the process of electrocatalytic degradation,precious metals,especially Pt-based materials,are considered as ideal catalysts for electrocatalytic degradation.However,the high cost and scarcity limit their wide application.Therefore,it is necessary to select low-cost,high-efficiency non-noble metal catalysts with excellent electrocatalytic performance.In this paper,the single transition metal p Hosp Hide Ni2 P and double-doped transition metal p Hosp Hide Ni Co P are taken as examples to discuss the degradation effect of transition metal p Hosp Hide on 2,4-dichlorop Henol.First,through the analysis of the preparation method of the transition metal p Hosp Hide,the hydrothermal method was chosen to prepare the Ni2 P and Ni Co P catalysts.In order to seek a more efficient catalytic effect,Factors that may affect the removal of 2,4-dichlorop Henol by the two catalytic electrodes were investigated,such as the reaction temperature,working current,electrolyte solution concentration and p H value.The stability of the Ni2P/NP electrode was investigated through repeated tests,and the reaction path is roughly analyzed by the measurement of intermediate products.The ability of the catalytic electrode to treat other chlorop Henols was measured,it seems that both catalysts have relatively good catalytic effects,their degradation process are consistent with Langmuir and kinetics,but their optimal reaction conditions are slightly different.The Ni Co P catalyst has better catalytic effect but the stability is not as good as Ni2 P,both of them have good catalytic effects on 2,4,6-trichlorop Henol and2-chlorop Henol.Secondly,based on the Ni Co P catalyst model,this paper analyzes its structure and electronic properties;in order to study the reaction process of 2,4-dichlorop Henol adsorption and dechlorination on the surface of the Ni Co P catalyst to generate p Henol,the entire catalytic process is analyzed.This article mainly investigates the role of Ni Co P in the HER reaction,and its adsorption of H2,2,4-dichlorop Henol and intermediate products(2-chlorop Henol and 4-chlorop Henol)in the reaction.As a result,it was found that the crystal structure of Ni Co P is rhombohedral in top view and rectangular parallelepiped structure in front view;analysis of its energy band and state density spectrum shows that the catalyst has good metal properties in general,there is a strong interaction between the Ni,Co and Patoms,which can play a good role in electrocatalysis;Ni Co P has a Gibbs free energy closer to 0 than Ni2 P,which is consistent with its better catalytic effect.Ni Co P also has good hydrogen evolution activity and favorable energy bond structure,although a little worse than noble metals;Ni Co P has good adsorption on H2,2,4-dichlorop Henol,2-chlorop Henol and 4-chlorop Henol,the structure after adsorption is also more conducive to the subsequent reaction,which has a good promotion effect for the subsequent hydrodechlorination.