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一锅法合成用于有效去除亚甲基蓝染料的γ辐照壳聚糖改性SBA-15介孔二氧化硅的氧化铁

One-pot synthesis of iron oxide - Gamma irradiated chitosan modified SBA-15 mesoporous silica for effective methylene blue dye removal.

作者信息

Meechai Titiya, Poonsawat Thinnaphat, Limchoowong Nunticha, Laksee Sakchai, Chumkaeo Peerapong, Tuanudom Ranida, Yatsomboon Artitaya, Honghernsthit Lalita, Somsook Ekasith, Sricharoen Phitchan

机构信息

Department of Premedical Science, Faculty of Medicine, Bangkokthonburi University, Thawi Watthana, Bangkok 10170, Thailand.

NANOCAST Laboratory, Center for Catalysis Science and Technology (CAST), Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, 272 Rama VI Rd., Ratchathewi, Bangkok 10400, Thailand.

出版信息

Heliyon. 2023 May 10;9(5):e16178. doi: 10.1016/j.heliyon.2023.e16178. eCollection 2023 May.

DOI:10.1016/j.heliyon.2023.e16178
PMID:37223700
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10200858/
Abstract

The development of adsorption technology and the processing of radiation have both been influenced by chitosan adsorbent (γ-chitosan), a raw material with unique features. The goal of the current work was to improve the synthesis of Fe-SBA-15 utilizing chitosan that has undergone gamma radiation (Fe-γ-CS-SBA-15) in order to investigate the removal of methylene blue dye in a single hydrothermal procedure. High-resolution transmission electron microscopy (HRTEM), High angle annular dark field scanning transmission electron microscopy (HAADF-STEM), small- and wide-angle X-ray powder diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR) and Energydispersive X-ray spectroscopy (EDS) were used to characterize γ-CS-SBA-15 that had been exposed to Fe. By using N-physisorption (BET, BJH), the structure of Fe-γ-CS-SBA-15 was investigated. The study parameters also included the effect of solution pH, adsorbent dose and contact time on the methylene blue adsorption. The elimination efficiency of the methylene blue dye was compiled using a UV-VIS spectrophotometer. The results of the characterization show that the Fe-γ-CS-SBA-15 has a substantial pore volume of 504 m g and a surface area of 0.88 cm g. Furthermore, the maximum adsorption capacity (Q) of the methylene blue is 176.70 mg/g. The γ-CS can make SBA-15 operate better. It proves that the distribution of Fe and chitosan (the C and N components) in SBA-15 channels is uniform.

摘要

吸附技术的发展和辐射处理都受到了壳聚糖吸附剂（γ-壳聚糖）的影响，这是一种具有独特特性的原材料。当前工作的目标是改进利用经过γ辐射的壳聚糖（Fe-γ-CS-SBA-15）合成Fe-SBA-15，以便在单一水热过程中研究亚甲基蓝染料的去除情况。使用高分辨率透射电子显微镜（HRTEM）、高角度环形暗场扫描透射电子显微镜（HAADF-STEM）、小角度和广角X射线粉末衍射（XRD）、傅里叶变换红外光谱（FT-IR）和能量色散X射线光谱（EDS）对暴露于铁的γ-CS-SBA-15进行表征。通过N-物理吸附（BET、BJH）研究了Fe-γ-CS-SBA-15的结构。研究参数还包括溶液pH值、吸附剂剂量和接触时间对亚甲基蓝吸附的影响。使用紫外可见分光光度计编制亚甲基蓝染料的去除效率。表征结果表明，Fe-γ-CS-SBA-15具有504 m g的大量孔体积和0.88 cm g的表面积。此外，亚甲基蓝的最大吸附容量（Q）为176.70 mg/g。γ-CS可使SBA-15运行得更好。这证明了铁和壳聚糖（C和N成分）在SBA-15通道中的分布是均匀的。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/435c/10200858/6b6e5c50bc66/gr14.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/435c/10200858/96ee0b9edc2b/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/435c/10200858/fa06d3ff26de/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/435c/10200858/c2b202b7fdfe/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/435c/10200858/962772500934/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/435c/10200858/7bb0eea925ba/gr11.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/435c/10200858/6b6e5c50bc66/gr14.jpg

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