Қазақ ұлттық қыздар педагогикалық университеті / Казахский национальный женский педагогический университет

Постоянный URI для этого сообществаhttps://cris.qyzpu.kz/handle/123456789/1

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2020 - 20252

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Автор: search.filters.author.Meruyert NazhipkyzyТема: search.filters.subject.specific surface area

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    Тип записи:Публикация,
    Acid Modification of Diatomite-Based Sorbents
    (2020-09-30)
    Araylim Nurgain
    ;
    Meruyert Nazhipkyzy
    ;
    Aizhan A. Zhaparova
    ;
    Almagul Issanbekova
    ;
    Michela Alfè
    In this work, the effect of acid pre-treatment (hydrochloric acid, HCl) and calcination of diatomite, a silicon dioxide-material from natural sources, was studied with the aim to obtain diatomite-based sorbents with specific physicochemical properties. For this, acid pre-treatments with HCl at different calcination conditions, namely HCl concentration (0.5, 1 M) and calcination temperatures (from 600 to 900 °C) were studied. Morphological features different from those of natural diatomite were obtained. It has been found that treatment of diatomite with 0.5 M HCl at 800 °C showed a specific pore volume of 0.008 cm3/g, and a specific surface area of 19.26 m2/g, while the treatment of diatomite with 1.0 M HCl showed a specific pore volume of 0.011cm3/g, and a specific surface area of 25.57 m2/g. The performance of the acid pretreatment of diatomite for adsorption of Pb ions from water was also studied.
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    The Significant Role Of Mxene’s Derivatives And Composites In Supercapcitors: A Review
    (2025-01-01)
    Meruyert Nazhipkyzy
    ;
    Aknur Berkinbayeva
    ;
    Muhammad Hashami
    ;
    Zhanar Kudyarova
    ;
    Togzhan Mashan
    MXene derivatives and composites are becoming fresh and promising two-dimensional (2D) materials because of their unique properties, performance, and multifunctionalities.This review covers the general aspects of MXenes (family of 2D transition metal carbides, nitrides, and carbonitrides), their MAX phase (a diverse class of nanolaminate materials with intriguing properties that have received incredible global research attention because they bridge the divide separating metals and ceramics.)precursors, dissimilarities and similarities between MAX phases and MXenes, and special properties of both materials.The important focuses are made on the methods of MXene synthesis and their stability and conductivity, as well as on synthesizing new MXene composites with desired characteristics.The impacts of MXenes in energy storage systems, especially supercapacitors, are discussed based on the high specific surface area, tunable porosity, and optimized inter-layer spacing.Here, various aspects of MXene materials, including properties, synthesis, and applications, have been discussed to highlight their importance for the development of energy storage systems and material science research.
    Цитирования (OpenAlex) 4Цитирования (OpenCitations) 1