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Table 1 Textural data of hybrid mesoporous materials SUASi-SBA-15, Eu-SUASi-SBA-15 and phen-Eu-SUASi-SBA-15 materials

From: Binary and Ternary Heterometallic (La³⁺, Gd³⁺, Y³⁺)–Eu³⁺ Functionalized SBA-15 Mesoporous Hybrids: Chemically Bonded Assembly and Photoluminescence

Sample	D ₁₀₀ (nm)	S _BET (m²/g)	V (cm³/g)	D _BJH (nm)	a ₀	t
SUA-SBA-15	10.39	742	1.22	5.86	11.99	6.13
Eu-SUASi-SBA-15	10.15	701	1.13	5.69	11.72	6.03
phen-Eu-SUASi-SBA-15	10.13	576	0.87	5.47	11.69	6.22

d ₁₀₀ is the d(100) spacing (2d sinθ = nλ, λ = 154.18 pm), a ₀ is the cell parameter (a ₀ = 2d ₁₀₀/√3), S _BET is the BET surface area, V is the pore volume, D is the pore diameter, and t is the wall thickness, calculated by a ₀-D

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