黄豆的多孔结构及对亚甲基蓝染料的去除性能研究

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Abstract Soybean is a kind of prophyta originated in our country. It has over 3 000 years of history as a food. Its medical functions have been disco-vered for many years, but the understanding to its inner structure has rarely been investigated thus far. As a major crop in the world, soybeans have many biological effects. The previous investigations on soybeans mostly focused on the biological characteristics, but less on their microstructures. In this paper, through a facile heat treatment of soybeans an elevated temperature, it was found that soybeans have a porous structure. A field emission scanning electron microscope (FESEM) was used to characterize the porous structure and the pore size distribution. The results indicate that the average porous size procured by the treatment at 60—120 ℃ for 5 h is from (0.21±0.05) μm to (0.43±0.08) μm. It was further observed that the obtained porous soybeans have a adsorption capacity for methylene blue dye. The influence of initial pH value and concentration on the adsorption was investigated and the adsorption kinetics was illustrated as a function of time. It was also observed that under weak acidic and weak alkali conditions, the removal rate to remove methylene blue dye is above 80% in the starting 15 min. The adsorption behavior can be well fitted using the quasi-second-order kinetic model. Porous soybean demonstrates the advantages of being friendly to humans, being easy to obtain, low cost, high adsorption capacity, etc., thus it will be a promising environmental cleaning material.

Key words： soybean porous structure methylene blue adsorption characteristics adsorption kinetics

Published: 09 December 2021

CLC number:

X52

Fund:The work was supported by the National Natural Science Foundation of China (51372042, 51872053), the National Natural Science Foundation of China-Guangdong Joint Fund (U1501246), the Natural Science Foundation of Guangdong Province, China (2015A030308004), the Natural Science Foundation of Department of Education of Guangdong Province (2014GKXM039), the Frontier Research Project of Dongguan City, Guangdong, China (2019622101006) and the Advanced Energy Science and Technology Guangdong Provincial Laboratory Foshan Branch-Fo-shan Xianhu Laboratory Open Fund-Key Project (XHT2020-011).

About author:: Jinhua Huang was graduated from the Guangdong University of Technology in June, 2018, and now is studying towards a master of engineering at the same university. From December 2019 to December 2020, she was jointly trained at the Dongguan South China Design and Innovation Institute. Her interests are mainly the investigations on the structure and functional properties of bio-porous materials.
Shengguo Lu, Professor at Guangdong University of Technology, Ph.D. supervisor. Dr. Lu graduated from the Huazhong University of Science and Technology in 1985 and 1988, earned his B.Sc. and M.E. In 1993, he graduated from the Xi'an Jiaotong University, and obtained a Ph.D. degree. From 1998 to 2002, he worked in the Department of Applied Physics and Materials Research Center of the Hong Kong Polytechnic University as an Research Associate. From 2003 to 2007, he worked as a research fellow in the Department of Physics and Materials Science of the City University of Hong Kong. From 2007 to 2012, he worked in the Materials Research Institute and Department of Electrical Engi-
neering of the Pennsylvania State University, and the Strategic Polymer Science Corporation in the United States as a postdoctoral researcher, research associate, senior research associate and senior scientist consultant. Since 2012, he had joined the Guangdong University of Technology as a distinguished professor. Up to now, he has published more than 200 papers in academic journals, and was authorized 1 US patent, and 17 Chinese patents, and published 45 Chinese patents. Dr. Lu's interests include but not limited to, nanopowders and nanocomposites, porous materials, multilayer thick film ceramics, ferroelectric polymers and soft substances, ferroelectric and dielectric ceramic capacitors, actuators, energy storage and conversion materials and devices, electrocaloric refrigeration materials and devices, and flexible sensors.

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	HUANG Jinhua
	JIAO Zhiwei
	CHEN Xianyi
	ZHAO Xiaobo
	YAO Yingbang
	TAO Tao
	LIANG Bo
	LU Shengguo

Cite this article:

HUANG Jinhua,JIAO Zhiwei,CHEN Xianyi, et al. Study on the Porous Structure of Soybean and Its Removal Characteristics on Methylene Blue Dye[J]. Materials Reports, 2021, 35(z2): 520-524.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2021/V35/Iz2/520

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