文献类型：期刊文献

英文题名：Biochar with inherited negative surface charges derived from Enteromorpha prolifera as a promising cathode material for capacitive deionization technology

作者：Li, Bei[1,2,3] Liu, Xiaojing[1,2] Wang, Ao[4] Tan, Chang[4] Sun, Kang[4] Deng, Libo[5] Fan, Mengmeng[6] Cui, Jian[2] Xue, Jianhui[1,2,3] Jiang, Jianchun[4] Yao, Dongrui[1,2]

第一作者：Li, Bei

通信作者：Yao, DR[1];Yao, DR[2];Jiang, JC[3]

机构：[1]Chinese Acad Sci, Nanjing 210014, Peoples R China;[2]Inst Bot, Jiangsu Engn Res Ctr Aquat Plant Resources & Water, Nanjing, Jiangsu, Peoples R China;[3]Nanjing Forestry Univ, Coll Biol & Environm, Nanjing 210037, Peoples R China;[4]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China;[5]Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518060, Peoples R China;[6]Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Peoples R China

年份：2022

卷号：539

外文期刊名：DESALINATION

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000830807900006)】；

基金：Acknowledgements The authors would like to acknowledge the Natural Resources Development Funds of Jiangsu Province (JSZRHYKJ202001; JSZRHYKJ202003) , the China Postdoctoral Science Foundation (2021M691337) , the National Natural Science Foundation of China (52100009) , and the Shenzhen Government's Plan of Science and Technology (20200813142301001) .

语种：英文

外文关键词：Biochar; Capacitive deionization; Surface charges; Enteromorpha prolifera; Activated carbon

摘要：The conversion of biowaste into valuable carbon-based materials is beneficial for developing a sustainable energy economy. In this study, activated carbons (ACs) are successfully synthesized via one-step carbonization using Enteromorpha prolifera (EP) as the precursor, which is a kind of ocean biowaste causing green tides. Owing to EP's ordered anatomic texture and naturally embedded alkalis, the produced EP-derived ACs (EPACs) exhibit hierarchical porous structure without any support from active agents. Plentiful heteroatoms are also formed on surface of EPACs, endowing the carbon with good hydrophilicity and unique electronegativity. Consequently, the salt adsorption capacity and the charge efficiency of the capacitive deionization (CDI) system are improved by 12.1 % and 11.95 % respectively by replacing the commercial-AC cathode with the EPAC-800 cathode (pyro-lyzed at 800 degrees C). The potential distribution test and the modified Donnan model simulation suggest that the hierarchical pore volume of EPAC-800 offers great desalination capacity, while its surface electronegativity optimizes the potential distribution of the two electrodes. The new knowledge gained from this work will hopefully not only establish a scalable method to utilize the EP waste, but also guide the design and manufacture of high-performance electrodes for CDI technology.