An oil shale ash-based X-type zeolite with rapid and high-capacity Cd2+ adsorption

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-04-25 DOI:10.1016/j.matlet.2025.138601

Xiaosheng Zhao , Hongru Wang , Yulu Wang , Lin Xue , Boen Xiao , Xin Zhang , Zicheng Zhou , Qian Wang

引用次数: 0

Abstract

X-type zeolite was directly synthesized from Fushun oil shale ash without pretreatment via the alkali fusion-hydrothermal method, and its adsorption properties for Cd²⁺ were studied. The results indicate that the X-type zeolite prepared exhibits a spherical agglomerate morphology, with a crystallinity of 89.98 % and a specific surface area of 374.27 m²/g. The zeolite achieves a Cd²⁺ saturation adsorption capacity of 158.73 mg/g, with 81.61 % of the capacity achieved within 2 min. During the adsorption process, Na⁺ is exchanged with Cd²⁺ and chemically adsorbed onto the zeolite surface. The adsorption follows a pseudo-second-order kinetic model and conforms to the Langmuir isotherm.

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油页岩灰基高容量快速吸附Cd2+的x型沸石

以抚顺油页岩灰分为原料，采用碱熔水热法直接合成了x型沸石，研究了其对Cd2+的吸附性能。结果表明，所制得的x型沸石呈球形团聚体形态，结晶度为89.98%，比表面积为374.27 m2/g。沸石对Cd2+的饱和吸附容量为158.73 mg/g，其中81.61%的饱和吸附容量在2 min内完成。在吸附过程中，Na+与Cd2+发生交换，化学吸附在沸石表面。吸附过程遵循拟二级动力学模型，符合Langmuir等温线。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive