Enhancing the colloidal stability of detonation synthesized diamond particles in aqueous solutions by adsorbing organic mono-, bi- and tridentate molecules

	Enhancing the colloidal stability of detonation synthesized diamond particles in aqueous solutions by adsorbing organic mono-, bi- and tridentate molecules
	Tao Wang; Stephan Handschuh-Wang; Panpan Qin; Yang Yang; Xuechang Zhou; Yongbing Tang
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2017
文献子类	期刊论文
英文摘要	Colloidal stability of nanoparticles with particle sizes smaller than 100 nm is a critical issue for various research areas, including material science, electronics and biomedicine. We propose a facile, fast and cost-efficient method to increase the colloidal stability by simply adding organic molecules as ligands, which adsorb to the nanoparticle surface subsequently. Citric acid, oxalic acid, glutamic acid and propylamine were found to stabilize the nanodiamond (ND) particles with a mean diameter of approx. 30-100 nm. The charge of the particles could be controlled by the pH of the dispersions and by stabilizing with carboxylic acids or amino acids mentioned above. ND particles stabilized with citric acid and oxalic acid at a pH higher than 2.5 were negatively charged, while ND dispersions stabilized with glutamic acid were charged positively below a pH of 3.2. Furthermore, the stability of the dispersion was found to be dependent on the concentration of the stabilizing agent and the pH of the dispersion. Finally, we proposed the stabilizing mechanism of ND particles with propylamine. Glutamic acid and propylamine stabilized ND dispersions can be utilized for high seeding densities on negatively charged surfaces due to the amino-groups, which can be helpful for adsorption processes in electronics and material science. Due to the high biocompatibility, non-cytotoxicity and chemical inertness of ND particles, carboxylic acids and amino acids stabilized ND particles are envisaged to be useful in the biomedical field, i.e. bio-labels, drug delivery vehicles, and effective enterosorbent. (C) 2017 Elsevier Inc. All rights reserved.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/11738]
专题	深圳先进技术研究院_集成所
作者单位	JOURNAL OF COLLOID AND INTERFACE SCIENCE
推荐引用方式 GB/T 7714	Tao Wang,Stephan Handschuh-Wang,Panpan Qin,et al. Enhancing the colloidal stability of detonation synthesized diamond particles in aqueous solutions by adsorbing organic mono-, bi- and tridentate molecules[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2017.
APA	Tao Wang,Stephan Handschuh-Wang,Panpan Qin,Yang Yang,Xuechang Zhou,&Yongbing Tang.(2017).Enhancing the colloidal stability of detonation synthesized diamond particles in aqueous solutions by adsorbing organic mono-, bi- and tridentate molecules.JOURNAL OF COLLOID AND INTERFACE SCIENCE.
MLA	Tao Wang,et al."Enhancing the colloidal stability of detonation synthesized diamond particles in aqueous solutions by adsorbing organic mono-, bi- and tridentate molecules".JOURNAL OF COLLOID AND INTERFACE SCIENCE (2017).