Figure 7From: Binary and Ternary Heterometallic (La3+, Gd3+, Y3+)–Eu3+ Functionalized SBA-15 Mesoporous Hybrids: Chemically Bonded Assembly and PhotoluminescenceThe excitation and emission spectra for the binary and ternary hybrid mesoporous materials Eu-SUASi-SBA-15 (a) and phen-Eu-SUASi-SBA-15 (b)Back to article page