中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 海洋研究所
  3. 中国科学院海洋研究所
  4. 海洋生态与环境科学重点实验室
Organosilicon quaternary ammonium compound-modified kaolin: A novel approach for the preparation of an algal bloom eliminator with excellent stability and high algae removal efficiency

文献类型：期刊论文

作者Wang, Mingjiao1,2,3; Cao, Xihua1,2,3; Zang, Xiaomiao1,2,3; Zheng, Xu1,2,3; Jiang, Wenbin1,2,3; Wu, Zaixing1,2,3; Song, Xiuxian1,2,3; Yu, Zhiming1,2,3
刊名ENVIRONMENTAL TECHNOLOGY & INNOVATION
出版日期2026-03-01
卷号41页码:11
关键词Modified clay Harmful algal blooms Quaternary ammonium compounds Surface grafting Flocculation
ISSN号2352-1864
DOI10.1016/j.eti.2026.104812
通讯作者Cao, Xihua(caoxh@qdio.ac.cn) ; Yu, Zhiming(zyu@qdio.ac.cn)
英文摘要Quaternary ammonium compound-modified clay (QAC-MC) has the advantages of a low dose and high efficiency in terms of algae removal and has high application potential for controlling harmful algal blooms (HABs) in various scenarios. However, the poor stability and secondary pollution risks of conventional QAC-MC limit its widespread adoption. In this study, molecular simulations revealed that physical adsorption of QACs containing a single quaternary ammonium active centre (-N+R3) on clay surfaces led to poor stability. Therefore, a novel approach for enhancing QAC-MC stability by targeted augmentation of Si-OH active sites on clay surfaces and the introduction of a secondary active centre-siloxane groups (-Si(OR)3)-into QAC molecules was proposed. In this approach, kaolin served as the substrate and was sequentially treated with tetraethyl orthosilicate and trimethyl [3-(trimethoxysilyl) propyl] ammonium chloride (SiQAC), ultimately yielding the novel SiQAC-MC. The results indicated that this novel composite not only significantly improved stability but also forced the charged active -N+R3 groups to protrude outwards from the composite surface, which enabled efficient capture of algal cells. Compared with conventional QAC-MC, the novel SiQAC-MC exhibited greater binding strength and surface positive charge, with the binding energy changing from -0.28 eV to -3.71 eV and the surface potential increasing from -3.24 mV to + 8.47 mV. As a result, the algae removal efficiency for Heterosigma akashiwo increased from 38 % to 97 % at 0.1 g/L. Overall, SiQAC-MC prepared by the new method showed high stability and excellent algae removal, providing theoretical and technical support for developing safe and effective HAB control agents.
WOS关键词ADSORPTION ; ENHANCEMENT
资助项目National Natural Science Foundation of China[42476221] ; China National Key R & D Program during the 14th Five-year Plan Period[2022YFC3105204] ; Chinese Academy of Sciences Institute of Oceanology Independent Deployment Project[IOCASZZCG001]
WOS研究方向Biotechnology & Applied Microbiology ; Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:001692910600002
出版者ELSEVIER
源URL[http://ir.qdio.ac.cn/handle/337002/204784]  
专题海洋研究所_海洋生态与环境科学重点实验室
通讯作者Cao, Xihua; Yu, Zhiming
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Shandong Engn Res Ctr Harmful Algae Bloom Mitigat, Qingdao 266404, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Mingjiao,Cao, Xihua,Zang, Xiaomiao,et al. Organosilicon quaternary ammonium compound-modified kaolin: A novel approach for the preparation of an algal bloom eliminator with excellent stability and high algae removal efficiency[J]. ENVIRONMENTAL TECHNOLOGY & INNOVATION,2026,41:11.
APA Wang, Mingjiao.,Cao, Xihua.,Zang, Xiaomiao.,Zheng, Xu.,Jiang, Wenbin.,...&Yu, Zhiming.(2026).Organosilicon quaternary ammonium compound-modified kaolin: A novel approach for the preparation of an algal bloom eliminator with excellent stability and high algae removal efficiency.ENVIRONMENTAL TECHNOLOGY & INNOVATION,41,11.
MLA Wang, Mingjiao,et al."Organosilicon quaternary ammonium compound-modified kaolin: A novel approach for the preparation of an algal bloom eliminator with excellent stability and high algae removal efficiency".ENVIRONMENTAL TECHNOLOGY & INNOVATION 41(2026):11.

入库方式： OAI收割

来源：海洋研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。