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Size-dependent sorption of myo-inositol hexakisphosphate and orthophosphate on nano-gamma-Al2O3
Yan, Yupeng1; Koopal, Luuk K.2; Li, Wei4; Zheng, Anmin3; Yang, Jun3; Liu, Fan1; Feng, Xionghan1
2015-08-01
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume451Pages:85-92
SubtypeArticle
AbstractThe effects of particle size (5, 35 and 70 nm) on the sorption of myo-inositol hexakisphosphate (IHP) and inorganic phosphate (KH2PO4, Pi) on gamma-Al2O3 nanoparticles were investigated using batch sorption experiments, zeta potential measurements and solid-state nuclear magnetic resonance spectroscopy (NMR). The results show that the maximum sorption densities (mu mol m(-2)) for IHP and Pi increase with decreasing gamma-Al2O3 particle size. The sorption affinity of gamma-Al2O3 for IHP and Pi generally increases with decreasing particle size, and the sorption affinity for IHP is approximately one order of magnitude greater than that for Pi. In our experimental time scale, surface complexation is the main mechanism for IHP and Pi sorption on large size gamma-Al2O3. While an additional surface precipitation mechanism, indicated by solid-state P-31 and Al-27 NMR data, is partly responsible for the greater sorption density on very small size gamma-Al2O3. Compared with Pi, the effect of particle size on the sorption of IHP is more pronounced. The results suggest a size-dependent surface reactivity of Al2O3 nanoparticles with Pi/IHP. The underlying mechanism will also be relevant for other small nanosize (hydr)oxide particles and is important for our understanding of the role of small nanoparticles in controlling the mobility and fate of organic and inorganic phosphates in the environment. (C) 2015 Elsevier Inc. All rights reserved.
KeywordNano-gamma-al2o3 Particle Size Myo-inositol Hexakisphosphate Orthophosphate Sorption Surface Precipitation
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.jcis.2015.03.045
WOS KeywordNUCLEAR-MAGNETIC-RESONANCE ; AMORPHOUS ALUMINUM HYDROXIDES ; ALPHA-FEOOH NANORODS ; SOLID-STATE NMR ; PHOSPHATE ADSORPTION ; SURFACE COMPLEXATION ; ATR-FTIR ; INOSITOL HEXAPHOSPHATE ; ORGANIC PHOSPHORUS ; NANOPARTICLE SIZE
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000354150900011
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.apm.ac.cn/handle/112942/4743
Collection磁共振应用研究部
Affiliation1.Huazhong Agr Univ, Coll Resources & Environm, Minist Agr, Key Lab Arable Land Conservat Middle & Lower Reac, Wuhan 430070, Peoples R China
2.Wageningen Univ & Res, Phys Chem & Soft Matter, NL-6703 HB Wageningen, Netherlands
3.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan Ctr Magnet Resonance, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China
4.Nanjing Univ, Sch Earth Sci & Engn, Minist Educ, Key Lab Surficial Geochem, Nanjing 210093, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Yan, Yupeng,Koopal, Luuk K.,Li, Wei,et al. Size-dependent sorption of myo-inositol hexakisphosphate and orthophosphate on nano-gamma-Al2O3[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2015,451:85-92.
APA Yan, Yupeng.,Koopal, Luuk K..,Li, Wei.,Zheng, Anmin.,Yang, Jun.,...&Feng, Xionghan.(2015).Size-dependent sorption of myo-inositol hexakisphosphate and orthophosphate on nano-gamma-Al2O3.JOURNAL OF COLLOID AND INTERFACE SCIENCE,451,85-92.
MLA Yan, Yupeng,et al."Size-dependent sorption of myo-inositol hexakisphosphate and orthophosphate on nano-gamma-Al2O3".JOURNAL OF COLLOID AND INTERFACE SCIENCE 451(2015):85-92.
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