Babich Ekaterina, Lubyankina Ekaterina, Kaasik Vladimir, Mozharov Alexey, Mukhin Ivan, Zhurikhina Valentina, Lipovskii Andrey
Laboratory of Multifunctional Glassy Materials, World-Class Research Center "Advanced Digital Technologies", Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia.
Laboratory of Nanophotonics, Alferov University, Khlopina 8/3, 194021 St. Petersburg, Russia.
Nanomaterials (Basel). 2021 Nov 5;11(11):2973. doi: 10.3390/nano11112973.
It is shown for the first time that the vacuum poling of soda-lime silicate glass and the subsequent processing of the glass in a melt containing silver ions results in the formation of silver nanoparticles buried in the subanodic region of the glass at a depth of 800-1700 nm. We associate the formation of nanoparticles with the transfer of electrons from negatively charged non-bridging oxygen atoms to silver ions, their reduction as well as their clustering. The nanoparticles do not form in the ion-depleted area just beneath the glass surface, which indicates the absence of a spatial charge (negatively charged oxygen atoms) in this region of the vacuum-poled glass. In consequence, the neutralization of the glass via switching of non-bridging oxygen bonds to bridging ones, which leads to the release of oxygen, should occur in parallel with the shift of calcium, magnesium, and sodium ions into the depth of the glass.
首次表明，钠钙硅酸盐玻璃的真空极化以及随后在含银离子的熔体中对玻璃进行处理，会导致在玻璃亚阳极区域800 - 1700纳米深处形成埋入的银纳米颗粒。我们将纳米颗粒的形成与电子从带负电荷的非桥氧原子转移到银离子、银离子的还原及其聚集联系起来。纳米颗粒不在玻璃表面正下方的离子耗尽区域形成，这表明在该真空极化玻璃区域不存在空间电荷（带负电荷的氧原子）。因此，通过将非桥氧键转换为桥氧键来中和玻璃从而导致氧释放的过程，应该与钙、镁和钠离子向玻璃深处的迁移同时发生。
