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通过硅组分发泡和特殊热处理制备多孔复合材料

Preparation of Porous Composite Materials through Silicon Component Foaming and Special Heat Treatment.

作者信息

Dai Min, Lin Chihpeng, Wu Xiange, Huang Wenji, Chen Zejian, Huang Mei

机构信息

School of Environment and Chemical Engineering, Zhaoqing University, Zhaoqing, Guangdong 526061, PR China.

Guangdong Provincial Key Laboratory of Environmental Health and Land Resource, Zhaoqing University, Zhaoqing 510000, PR China.

出版信息

ACS Omega. 2024 Sep 30;9(40):41855-41862. doi: 10.1021/acsomega.4c06394. eCollection 2024 Oct 8.

DOI:10.1021/acsomega.4c06394
PMID:39398123
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11465246/
Abstract

This study proposes a foaming method along with calcination to produce silica-based porous materials. The high-silicon-content waste residue reacts with sodium hydroxide for hydrogen evolution foaming reactions. Then, the foaming green bodies are embedded and calcined in the calcination powder consisting of silicon, silicon carbide, graphite, and activated carbon at 1200 °C. The calcination powder creates a reducing atmosphere and prevents adhesion of the foaming green bodies to the crucible during calcination. Furthermore, the addition of activated carbon and calcination improve the macroporosity issue of the prepared sample through a gas-liquid-solid transformation. The BET surface area measurement is 64.197 m/g, and the mercury intrusion porosimetry measurement indicates a porosity of 56.48%, with an average pore diameter of 396.48 nm. The porous composite materials exhibit the capability to adsorb methylene blue in solution. The porous materials possessing functional groups suggest promising potential for future development and application prospects.

摘要

本研究提出了一种结合煅烧的发泡方法来制备硅基多孔材料。高硅含量的废渣与氢氧化钠发生反应以进行析氢发泡反应。然后，将发泡生坯埋入由硅、碳化硅、石墨和活性炭组成的煅烧粉末中，并在1200℃下进行煅烧。煅烧粉末营造出还原气氛，并防止发泡生坯在煅烧过程中粘附到坩埚上。此外，活性炭的添加和煅烧通过气-液-固转变改善了所制备样品的大孔率问题。BET表面积测量值为64.197 m²/g，压汞法孔隙率测量表明孔隙率为56.48%，平均孔径为396.48 nm。多孔复合材料表现出吸附溶液中亚甲基蓝的能力。具有官能团的多孔材料显示出良好的未来发展潜力和应用前景。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f42/11465246/28cb1f3c0119/ao4c06394_0011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f42/11465246/a06a3f44670b/ao4c06394_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f42/11465246/6a3ed009cd2c/ao4c06394_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f42/11465246/8e062e080162/ao4c06394_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f42/11465246/41d64fc8b23a/ao4c06394_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f42/11465246/d7443ad587fa/ao4c06394_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f42/11465246/612bf3aa05ca/ao4c06394_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f42/11465246/faa3a868791d/ao4c06394_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f42/11465246/816472ce7dfb/ao4c06394_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f42/11465246/65243aa458d8/ao4c06394_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f42/11465246/8048f59dc23b/ao4c06394_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f42/11465246/28cb1f3c0119/ao4c06394_0011.jpg

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