Application and challenges of palladium-based catalysts in electrocatalytic hydrodechlorination
Electrocatalytic hydrodechlorination(EHDC)technology is a new type of efficient,safe and environmentally friendly water treatment technology.Palladium(Pd)catalyst is the more effective EHDC catalyst,but is limited in industrial application due to its easy deactivation and high price.In this paper,the research progress on the regulations of morphological structure(dispersion,particle size,crystal plane),scale effect(single atom catalyst,double atom catalyst)and electronic structure of Pd to improve the EHDC performance is analyzed.It is proposed that the effective adsorption of pollutants over Pd can improve the EHDC performance.The effects of other factors(working potential,coexisting ions,pH,etc.)on its activity were discussed.The future application prospect of EHDC technology is outlooked,including the preparation of Pd single atom catalyst in a simple way to achieve 100％atom utilization rate and significantly reduce the cost of Pd.Meanwhile,the coupling of renewable energy technology to reduce energy cost and promote industrial application is a future research direction.
electrochemistryelectrocatalytic hydrodechlorinationPd-based catalystchlorinated organic pollutantswaste water
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维普
