Graphene oxide modified with magnesium hydroxide derived from dolomites for dyes adsorptions and supercapacitor

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Chemistry and Physics Pub Date : 2024-10-16 DOI:10.1016/j.matchemphys.2024.130041

Fariz Irkham Muadhif , Murni Handayani , Muhammad Aulia Anggoro , Yosephin Dewiani Rahmayanti , Desinta Dwi Ristiana , Khusnul Khotimah , Isa Anshori , Agung Esmawan , Achiar Faris , Lytha Rizqika Lailia , Gagus Ketut Sunnardianto , Grace Gita Redhyka , Wahyu Bambang Widayatno , Riesca Ayu Kusuma Wardhani , Lydia Rohmawati

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Abstract

This research highlights the novelty of using dolomite as an Mg(OH)₂ source for synthesizing GO/Mg(OH)₂ nanocomposite, a dye adsorbent and supercapacitor material. So far, dolomite has only been conventionally used as fertilizer and building material. By utilizing dolomite as Mg(OH)₂ raw materials, this nanocomposite shows high efficiency in removing methylene blue (MB) up to 97 % with adsorption kinetics following a pseudo-second-order model. At an optimal pH of 5, this material can be used repeatedly with satisfactory results. For supercapacitor applications, GO/Mg(OH)₂ has a specific capacitance of 117.80 F g⁻¹ at a current density of 0.5 A g⁻¹ and 90 % cyclic capacity retention, making it an excellent candidate in modern energy storage technology.

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白云石氢氧化镁修饰的氧化石墨烯用于染料吸附和超级电容器

这项研究强调了利用白云石作为 Mg(OH)2 源合成 GO/Mg(OH)2 纳米复合材料（一种染料吸附剂和超级电容器材料）的新颖性。迄今为止，白云石仅被用作传统的肥料和建筑材料。通过利用白云石作为 Mg(OH)2 原料，这种纳米复合材料在去除亚甲基蓝（MB）方面的效率高达 97%，吸附动力学遵循伪二阶模型。在最佳 pH 值为 5 的条件下，这种材料可反复使用，效果令人满意。在超级电容器应用方面，当电流密度为 0.5 A g-1 时，GO/Mg(OH)2 的比电容为 117.80 F g-1，循环容量保持率为 90%，是现代储能技术的理想候选材料。

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来源期刊

Materials Chemistry and Physics 工程技术-材料科学：综合

CiteScore

8.70

自引率

4.30%

发文量

1515

审稿时长

69 days

期刊介绍： Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.