兰州大学机构库
BO3/BO4 Intermixing in Borosilicate Glass Networks Probed by Double-Quantum 11B NMR: What Factors Govern BO4-BO4 Formation?
Lv, Peng1,2,3; Stevensson, Baltzar3; Yu, Yang3; Wang, Tieshan1,2; Eden, Mattias3
2023-10-03
Online publication date2023-10
Source PublicationJournal of Physical Chemistry C   Impact Factor & Quartile
ISSN1932-7447 ; 1932-7455
EISSN1932-7455
Volume127Issue:40Pages:20026-20040
page numbers15
AbstractWe examine the borate group intermixing in a series of 25 borosilicate (BS) glasses from the [0.5M((2))O-0.5Na(2)O]-B2O3-SiO2 systems with M = {Li, K, Rb, Mg, Ca} along with ternary K2O-B2O3-SiO2 and Na2O-B2O3-SiO2 glasses by double-quantum-single-quantum (2Q-1Q) B-11 correlation nuclear magnetic resonance (NMR) experiments. The alterations of the fractional populations of B-[3]-O-B-[3], B-[3]-O-B-[4], and B-[4]-O-B-[4] linkages in the glass networks were monitored for variable n(Si)/n(B) molar ratios, nonbridging O contents of the glass, and the (average) cation field strength (CFS) of the Mz+/Na+ network modifiers. A significant B-[4]-O-B-[4] bonding is observed in all glasses, thereby conclusively demonstrating that the normally assumed BO4-BO4 avoidance is far from strict in BS glasses, regardless of the Mz+ field strength. We show that the degree of B-[4]-O-B-[4] bonding depends foremost on its underlying BO4 population and to a lesser degree on the NBO content of the glass; we also provide a straightforward prediction of the B-[4]-O-B-[4] population in an arbitrary BS glass from parameters readily obtained by routine B-11 NMR. The propensity for forming B-[4]-O-B-[4] linkages increases concurrently with either the CFS or the amount of glass network modifiers, roughly scaling as the square root of the effective CFS that encompasses both parameters. Although BO3-BO3 and BO3-BO4 pairs remain favored throughout all examined BS glass networks, the borate group intermixing randomizes significantly for increasing effective CFS, out of which the amount and charge of the glass-network modifier cations dominate over their size. Our results are discussed in relation to the two prevailing but formally mutually exclusive random network and superstructural unit models of borate and BS glasses.
PublisherAMER CHEMICAL SOC
DOI10.1021/acs.jpcc.3c03577
Indexed BySCIE
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:001077652100001
Original Document TypeArticle
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/568743
Collection兰州大学
物理科学与技术学院
Corresponding AuthorEden, Mattias
Affiliation
1.Lanzhou Univ, Minist Educ, Frontiers Sci Ctr Rare Isotopes, Lanzhou 730000, Peoples R China;
2.Lanzhou Univ, Key Lab Special Funct Mat & Struct Design, Minist Educ, Lanzhou 730000, Peoples R China;
3.Stockholm Univ, Dept Mat & Environm Chem, Phys Chem Div, Arrhenius Lab, SE-10691 Stockholm, Sweden
First Author AffilicationLanzhou University;  School of Physical Science and Technology
Recommended Citation
GB/T 7714
Lv, Peng,Stevensson, Baltzar,Yu, Yang,et al. BO3/BO4 Intermixing in Borosilicate Glass Networks Probed by Double-Quantum 11B NMR: What Factors Govern BO4-BO4 Formation?[J]. Journal of Physical Chemistry C,2023,127(40):20026-20040.
APA Lv, Peng,Stevensson, Baltzar,Yu, Yang,Wang, Tieshan,&Eden, Mattias.(2023).BO3/BO4 Intermixing in Borosilicate Glass Networks Probed by Double-Quantum 11B NMR: What Factors Govern BO4-BO4 Formation?.Journal of Physical Chemistry C,127(40),20026-20040.
MLA Lv, Peng,et al."BO3/BO4 Intermixing in Borosilicate Glass Networks Probed by Double-Quantum 11B NMR: What Factors Govern BO4-BO4 Formation?".Journal of Physical Chemistry C 127.40(2023):20026-20040.
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