danДоклады Национальной академии наук БеларусиDoklady of the National Academy of Sciences of Belarus1561-83232524-2431The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-8323-2023-67-1-27-37dan-1108Research ArticleХИМИЯCHEMISTRYСинтез и физико-химические свойства адсорбентов на основе Li1,33Mn1,67O4Synthesis and physicochemical properties of adsorbents based on Li1.33Mn1.67O4https://orcid.org/0000-0002-3053-317XИванецА. И.IvanetsA. I.

Иванец Андрей Иванович – член-корреспондент, д-р хим. наук, профессор, вед. науч. сотрудник

ул. Сурганова, 9/1, 220072, Минск

Ivanets Andrei I. – Corresponding Member, D. Sc. (Chemistry), Professor, Leading Researcher

9/1, Surganov Str., 220072, Minsk

andreiivanets@yandex.ruПечёнкаД. В.PecheonсkaD. V.

Печёнка Дарья Витальевна – аспирант, мл. науч. сотрудник

ул. Сурганова, 9/1, 220072, Минск

Pecheonсka Darya V. – Postgraduate Student, Jounior Researcher

9/1, Surganov Str., 220072, Minsk

d.pecheoncka2013@yandex.byПрозоровичВ. Г.ProzorovichV. G.

Прозорович Владимир Геннадьевич – науч. сотрудник

ул. Сурганова, 9/1, 220072, Минск

Prozorovich Vladimir G. – Researcher

9/1, Surganov Str., 220072, Minsk

vladimirprozorovich@gmail.comКузнецоваТ. Ф.KouznetsovaT. F.

Кузнецова Татьяна Федоровна – канд. хим. наук, доцент, заведующий лабораторией

ул. Сурганова, 9/1, 220072, Минск

Kouznetsova Tatyana F. – Ph. D. (Chemistry), Associate Professor, Head of the Laboratory

9/1, Surganov Str., 220072, Minsk

tatyana.fk@gmail.comИнститут общей и неорганической химии Национальной академии наук БеларусиInstitute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus2023040320236712737Copyright © Иванец А.И., Печёнка Д.В., Прозорович В.Г., Кузнецова Т.Ф., 20232023Иванец А.И., Печёнка Д.В., Прозорович В.Г., Кузнецова Т.Ф.Ivanets A.I., Pecheonсka D.V., Prozorovich V.G., Kouznetsova T.F.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://doklady.belnauka.by/jour/article/view/1108

С использованием твердофазного, золь-гель и гидротермального методов синтезированы адсорбенты на основе двойных оксидов лития-марганца шпинельной структуры Li1,33Mn1,67O4. Установлено влияние способа синтеза и температуры последующей термообработки на кристаллическую структуру, фазовый состав, текстурные свойства и морфологию полученных адсорбентов. Выявлено, что образцы, полученные твердофазным и золь-гель методами и прокаленные при 600 °С, являются однофазными (Li1,33Mn1,67O4), а примесная фаза Mn2O3 образуется только при гидротермальном синтезе. С ростом температуры прокаливания от 400 до 800 °С наблюдается увеличение среднего размера кристаллитов, снижение удельной поверхности и общего объема пор. Полученные золь-гель и гидротермальным методами образцы после прокаливания при 600 °С показали наиболее высокую эффективность сорбции ионов Li+.

Adsorbents based on binary lithium-manganese oxides with the spinel structure of Li1.33Mn1.67O4 were synthesized by using solid-phase, sol-gel, and hydrothermal methods. The effect of the synthesis methods and calcination temperature on the crystal structure, phase composition, textural characteristics, and morphology of prepared adsorbents was established. It was found that the samples obtained by solid-phase and sol-gel methods and calcined at 600 °C were single-phase (Li1.33Mn1.67O4) while the Mn2O3 trace phase was also obtained only in hydrothermal synthesis. The increase in the average crystallite size and the decrease in the specific surface and the total volume of pores were observed during temperature rise in the range from 400 to 800 °C. The samples prepared by sol-gel and hydrothermal methods after at 600 °C calcination had the highest adsorption efficiency of Li+ ions.

Li133Mn167O4адсорбенты ионов Li+фазовый составтекстурные характеристикиморфологияLi1.33Mn1.67O4adsorbents of Li+ ionsphase compositiontextural characteristicsmorphologyРабота выполнена при финансовой поддержке БРФФИ в рамках совместного белорусскоузбекского проекта (грант № Х21УЗБГ-013). Авторы выражают благодарность научным сотрудникам лаборатории физико-химических исследований и агрохимических испытаний ИОНХ НАН Беларуси Л. В. Кульбицкой и О. А. Сычевой за помощь в проведении РФА, ИКС и ДТА-ТГ исследований.This work was done in the framework of a joint Belarusian-Uzbek project (BRFFR grant no. Х21УЗБГ-013). The authors are grateful to researchers of the Laboratory of Physical and Chemical Research and Agrochemical Testing IGIC NAS of Belarus Lyudmila Kulbitskaya and Olga Sychova for assistance in carrying out of XRD, FTIR and DTA-TG studies.ReferencesGrey, C. P. Prospects for lithium-ion batteries and beyond – a 2030 vision / C. P. Grey, D. S. 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The authors declare that there are no conflicts of interest present.