Влияние потенциала на кинетику электрохимической эксфолиации графита и свойства композитов на основе оксида графена, функционализированного анилином

В работе представлен электрохимический подход к одностадийному получению оксида графена, функционализированного анилином. Оценено влияние потенциала эксфолиации в диапазоне 7.5–9.5 В на кинетические параметры интеркаляции ионов электролита в межслоевое пространство графита и его эксфолиации, а также на свойства полученного композитного материала. Показано, что введение гидросульфата анилина в состав электролита при потенциале эксфолиации 7.5 В приводит к возрастанию констант скорости интеркаляции ионов электролита в межслоевое пространство графита и его эксфолиации в 9 и 6 раз соответственно. При максимальном потенциале (9.5 В) эксфолиации наблюдается снижение выхода функционализированного оксида графена (ОГ) по сравнению с нефункционализированными образцами, что коррелирует со снижением содержания карбоксильных групп и увеличением содержания фенольных гидроксилов в структуре наноматериала. Методом циклической вольтамперометрии охарактеризованы свойства поверхности стеклоуглеродных электродов (СУЭ), модифицированных ОГ, функционализированным анилином, и выявлено снижение поверхностной концентрации редокс-активных групп и емкости двойного электрического слоя.

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