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Dual-surface capped hydroxyapatite nano-amendment with tuned alternate long-short chain configuration for efficient adsorption towards multi-heavy metal ions in complex-contaminated systems
Author NameAffiliationE-mail
GAO Mochou State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China
Institute of Nanoscience and Engineering, Henan University, Zhengzhou 450046, China
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry-College of Chemistry, Jilin University, Changchun 130012, China 		 
MENG Shan Institute of Nanoscience and Engineering, Henan University, Zhengzhou 450046, China
College of Chemistry and Molecular Sciences, Henan University, Zhengzhou 450046, China 		 
ZHANG Jinzhong Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 90095, USA  
FENG Wenhua State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China
Institute of Nanoscience and Engineering, Henan University, Zhengzhou 450046, China 		 
DONG Shuo School of Basic Medical Sciences, Henan University, Zhengzhou 450046, China  
CHEN Jianping State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China
Institute of Nanoscience and Engineering, Henan University, Zhengzhou 450046, China 		 
ZHAO Yanbao State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China
Institute of Nanoscience and Engineering, Henan University, Zhengzhou 450046, China 		 
YU Laigui Institute of Nanoscience and Engineering, Henan University, Zhengzhou 450046, China  
YING Rongrong State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China yrr@nies.org 
ZOU Xueyan State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China
Institute of Nanoscience and Engineering, Henan University, Zhengzhou 450046, China 		zouxueyan@henu.edu.cn 
Abstract: Hydroxyapatite nanoparticles (HAP NPs) were synthesized by a one-step hydrothermal method. The surface of HAP NPs was grafted -SH and -COOH chelating groups via in situ surface-modification with iminodiacetic acid (IDA) and 3-mercaptopropyl trimethoxysilane (MPS) to afford dual surface-capped nano-amendment HAPIDA/MPS. The structure of HAP-IDA/MPS was characterized, and its adsorption performance for Hg2+, Cu2+, Zn2+, Ni2+, CO2+, and Cd2+ was evaluated. The total adsorption capacity of 0.10 g HAP-IDA/MPS nano-amendment for Hg2+, Cu2+, Zn2+, Ni2+, CO2+, and Cd2+ with an initial mass concentration of 20 mg·L-1 reached 13.7 mg·g-1, about 4.3 times as much as that of HAP. Notably, HAP-IDA/MPS nano-amendment displayed the highest immobilization rate for Hg2+, possibly because of its chemical reaction with -SH to form sulfide, possessing the lowest solubility product constant among a variety of metal sulfides.
Keywords: heavy metal  hydroxyapatite  nano-amendment  configuration tuning  synergistic adsorption
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GAO Mochou,MENG Shan,ZHANG Jinzhong,FENG Wenhua,DONG Shuo,CHEN Jianping,ZHAO Yanbao,YU Laigui,YING Rongrong,ZOU Xueyan.Dual-surface capped hydroxyapatite nano-amendment with tuned alternate long-short chain configuration for efficient adsorption towards multi-heavy metal ions in complex-contaminated systems[J].Chinese Journal of Inorganic Chemistry,2025,41(7):1427-1438.
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Chinese Journal of Inorganic Chemistry