Synthesis and Characterization of β-Cyclodextrin Modified Biochar Environmental Remediation Materials  

作　　者：Qing Guo Xiao Wang Wanke Chen Xiaoyan Wang Jing Yuan Qianfeng Zhang Qing Guo;Xiao Wang;Wanke Chen;Xiaoyan Wang;Jing Yuan;Qianfeng Zhang(Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’,anshan, China;Department of Civil Engineering, Tongling University, Tongling, China;Department of Civil Engineering, Manitoba University, Winnipeg, Canada)

机构地区：[1]Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’,anshan, China [2]Department of Civil Engineering, Tongling University, Tongling, China [3]Department of Civil Engineering, Manitoba University, Winnipeg, Canada

出　　处：《Journal of Materials Science and Chemical Engineering》2024年第4期42-52,共11页材料科学与化学工程（英文）

摘　　要：In this paper, biochar (BC) was used as raw material, activated by deionizing aqueous solution, NaCl solution, CA solution and HCl solution respectively. Epichlorohydrin (EPI) was used as crosslinking agent, and β-cyclodextrin (β-CD) was used to modify biochar (BC). The prepared modified biochar materials were labeled with β-CDBC, β-CDBC-Na, β-CDBC-CA and β-CDBC-H, respectively. The infrared spectrum, X-ray diffractometer, scanning electron microscope and specific surface area of the four modified materials were tested. The results showed that the C-O stretching vibration peak at 1020 cm⁻¹ of the modified materials was slightly offset compared with that of biochar. The characteristic absorption peaks of XRD pattern decrease obviously at 2θ = 26.7˚ and 29.5˚. It can be obviously observed on the electron microscope image that the surface is loaded or formed clathrates, and BET data and graphs also show that the specific surface area of the modified biochar is larger. Therefore, β-cyclodextrin successfully modified biochar and formed clathrates on the surface of biochar or was loaded in the pore structure of biochar, especially β-CDBC-CA achieved better modification effect. Because biochar and β-cyclodextrin raw materials are cheap, easy to prepare and green, and less prone to secondary pollution, it has a good advantage in environmental governance.In this paper, biochar (BC) was used as raw material, activated by deionizing aqueous solution, NaCl solution, CA solution and HCl solution respectively. Epichlorohydrin (EPI) was used as crosslinking agent, and β-cyclodextrin (β-CD) was used to modify biochar (BC). The prepared modified biochar materials were labeled with β-CDBC, β-CDBC-Na, β-CDBC-CA and β-CDBC-H, respectively. The infrared spectrum, X-ray diffractometer, scanning electron microscope and specific surface area of the four modified materials were tested. The results showed that the C-O stretching vibration peak at 1020 cm⁻¹ of the modified materials was slightly offset compared with that of biochar. The characteristic absorption peaks of XRD pattern decrease obviously at 2θ = 26.7˚ and 29.5˚. It can be obviously observed on the electron microscope image that the surface is loaded or formed clathrates, and BET data and graphs also show that the specific surface area of the modified biochar is larger. Therefore, β-cyclodextrin successfully modified biochar and formed clathrates on the surface of biochar or was loaded in the pore structure of biochar, especially β-CDBC-CA achieved better modification effect. Because biochar and β-cyclodextrin raw materials are cheap, easy to prepare and green, and less prone to secondary pollution, it has a good advantage in environmental governance.

关 键 词：BIOCHAR Β-CYCLODEXTRIN MODIFICATION CLATHRATE Green Environmental Protection 

分 类 号：S15[农业科学—土壤学]