NCQDs修饰FeOOH基复合材料的制备及其电容脱盐性能

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Abstract：Capacitive deionization （CDl） is emerging as a novel technology forseawaterpurification，withtheelectrodematerial playingacrucial rolein desalination performance. In this study， we designed a nitrogen-doped carbon quantum dots decorated iron oxide hydroxide （NCQDs/FeOOH） composite by afacile hydrothermal strategy and investigated as the CDl cathode for desalination application.Microstructural analyses reveal that the composite featuresarelativelyuniform nanoparticle-assemblednetwork，hierarchical porealignment，，and abundant porosity.Electrochemical tests confirmits outstanding capacitance property and conductivity. In an initial NaCl aqueous solution 2000mg⋅L-1 atan applied potential 1.4V， the GACNaCl NCQDs/FeOOH hybrid electrode reaches 56.52mg⋅g-1 ，alongwith remarkablecyclingdurabity.Furthermore，theCV （cyclic voltammetry）andex situXPS（X-ray photoelectron spectroscopy） characterizations indicate the predominantly pseudocapacitive desalination mechanism.

Key Words： Carbon quantum dots；FeOOH；Composite material;CDl desalination；Durability

摘要：电容去离子（Capacitive deionization，CDI）是一种新型的海水淡化技术，而电极材料是影响脱盐性能的关键因素。（剩余20181字）