Fig 2 - Density of silanol groups on the surface of silica precipitated from a hydrothermal solution

Types of silanol groups and siloxane bridges at the surface of an amorphous silica and internal OH groups: vicinal (Q), germinal (Q 2 ), and isolated (Q 3 ) silanols; Q 4 denotes surface siloxanes.

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Reference

Density of silanol groups on the surface of silica precipitated from a hydrothermal solution - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Types-of-silanol-groups-and-siloxane-bridges-at-the-surface-of-an-amorphous-silica-and_fig2_239046276 [accessed 14 May 2025]

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Fig. 2. Types of silanol groups and siloxane bridges at the surface of an amorphous silica and internal OH groups: vicinal (Q), germinal (Q 2 ), and isolated (Q 3 ) silanols; Q 4 denotes surface siloxanes.

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<a href="https://www.researchgate.net/figure/Types-of-silanol-groups-and-siloxane-bridges-at-the-surface-of-an-amorphous-silica-and_fig2_239046276"><img src="https://www.researchgate.net/profile/Vadim-Potapov-2/publication/239046276/figure/fig2/AS:794835132899329@1566514871162/Types-of-silanol-groups-and-siloxane-bridges-at-the-surface-of-an-amorphous-silica-and.png" alt="Types of silanol groups and siloxane bridges at the surface of an amorphous silica and internal OH groups: vicinal (Q), germinal (Q 2 ), and isolated (Q 3 ) silanols; Q 4 denotes surface siloxanes."/></a>